Answer:
The answer is Hydropower provides...
Hydropower provides renewable energy for human use is the advantage of the production of electricity through hydropower. Therefore, option (C) is correct.
What are the advantages of hydropower?Hydropower is a renewable source of energy that is used to generate energy via hydropower relies on the water cycle. Hydroelectric power can be defined as a domestic source of energy, allowing it to produce its own energy without depending on international fuel sources.
The hydropower sector creates reservoirs that provide recreational opportunities such as swimming, fishing, and boating. Hydroelectric power is flexible and has facilities that can quickly go from zero power to maximum output.
They provide necessary backup power during major electricity outages or disruptions because hydropower plants can produce power to the grid immediately.
Hydropower is affordable and provides low-cost electricity and durability over time compared to other sources of energy. Hydropower benefits beyond electricity production by providing irrigation support, flood control, and clean drinking water.
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How does fear affect your body?
Answer:
Fear weakens our immune system and can cause cardiovascular damage. Fear can cause damage to some parts of our brains. Fear can interrupt processes in our brains that allow us to regulate emotions.
Explanation:
Hope this helps:)........if not then sorry for wasting your time and may God bless you:)
What is the mass (in grams) of 4.5 x 10^23 units of NaCl?
could you also explain?
Answer:
43.7 g
Explanation:
unit mass of NaCl = (23 + 35.5) u = 58.5 u
58.5 is the mass of one unit formula of NaCl (since NaCl is not a molecular compound)
1 u = 1.661×10^-24 g
if 1 unit formula of NaCl has 58.5 u, then 4.5×10²³ units of NaCl will have:
58.5 u × (1.661×10^-24 g/1 u) × 4.5×10²³ = 43.7 g
How many grams of carbon are contained in one mole of C3H8? (Report your
answer to two places past the decimal point. Moodle is looking for a number
only, no units.)
There are 44 grams of carbon contained in one mole of C3H8. Details about mass can be found below.
How to calculate mass?The mass of a substance can be calculated by multiplying the number of moles of a substance by its molar mass.
According to this question, one mole of propane (C3H8) was given.
Molar mass of C3H8 = 12(3) + 1(8) = 44g/mol
Mass of C3H8 = 44g/mol × 1 = 44g
Therefore, there are 44 grams of carbon contained in one mole of C3H8.
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Calcium (Ca) has an atomic number of 20. It can form an ion by losing 2
electrons. What would its charge be?
A. 18
B. 22
C. 2+
D. 2-
Answer:
2+
Explanation:
Apex lolz
The novice nurse administers RBCs to a client. Which actions by the novice nurse are deemed safe by the nurse preceptor? (Select all that apply.)
Priming the intravenous tubing with 0.9% sodium chloride.
Obtaining and documenting a full set of baseline vital signs.
NOT setting the infusion rate to deliver blood within 6 hours - it should be 4 hours.
Also require large gauge catheters 20-24 gauge.
Should stay with client for first 15 minutes
According to the nurse preceptor, the new nurse adheres to a number of safe practices while administering red blood cells (RBCs) to a patient.
Based on the given options, the actions that are deemed safe by the nurse preceptor are:
Priming the intravenous tubing with 0.9% sodium chloride.Obtaining and documenting a full set of baseline vital signs.Setting the infusion rate to deliver blood within 4 hours instead of 6 hours.Using large gauge catheters (20-24 gauge). When giving red blood cells (RBCs) to a patient, the novice nurse follows a number of safe procedures, according to the nurse preceptor. To ensure appropriate flushing and lower the chance of an air embolism, the inexperienced nurse correctly primes the intravenous tube with 0.9% sodium chloride in the first step. The second step is for the inexperienced nurse to collect and record a complete set of baseline vital signs. This creates a baseline for monitoring the client's status both before and after the transfusion. Third, in accordance with the advised duration for safe administration, the nurse modifies the infusion rate to administer the RBCs in 4 hours as opposed to 6 hours. Fourth, the inexperienced nurse employs big gauge catheters (20-24 gauge) to promote quick and smooth blood product flow and reduce problems.
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Which of the following reactions represents a redox reaction? O K CrO4 + BaCl2 → BaCrO4 + 2 KCI O Pb2+ + 2 Br- → → Pb Br2 None of them represents a redox reaction Cu + S Cus
A redox reaction is a reaction where both oxidation and reduction take place. In such reactions, electrons are exchanged between the reactants. The reaction which represents a redox reaction out of the given options is
Pb²⁺ + 2Br⁻ → PbBr₂
Redox reactions involve the transfer of electrons from one molecule to another molecule. Some ways to identify if a given reaction is a redox reaction or not are as follows: If a molecule gains electrons, it gets reduced, and if a molecule loses electrons, it gets oxidized. If both of these processes occur in a reaction, it is a redox reaction. Another method is to check whether there is a change in oxidation state in the reactants or not. If there is a change, it indicates a redox reaction. Reaction that represents a redox reaction out of the given options is: Pb²⁺ + 2Br⁻ → PbBr₂.
The oxidation state of lead changes from +2 in Pb²⁺ to 0 in Pb, indicating a reduction. Simultaneously, the oxidation state of bromine changes from -1 in Br⁻ to 0 in PbBr₂, indicating an oxidation. As a result, this reaction is a redox reaction.
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hybrid orbitals are formed by combining the valence orbitals on an atom. there are hybrid orbitals represented by this picture. they are composed of s p d (number) atomic orbitals, corresponding to hybridization. they have an electron pair geometry of . with bond angles of (if more than one bond angle is possible, separate each with a space).
When the hybridization occur molecules have a linear arrangement of the atoms with a bond angle of 180 degree.
Hybrid orbitals are formed by combining the valence orbital on an atom. These hybrid orbitals either form sigma (σ) bonds directed toward other atoms of the molecule or contain lone pairs of electrons. We can determine the type of hybridization around a central atom from the geometry of the regions of electron density about it. Two such regions imply sp hybridization, three, sp2 hybridization, four, sp3 hybridization five, sp3d hybridization and six, sp3d2 hybridization. Pi (π) bonds are formed from unhybridized atomic orbitals that is p or d orbitals. The geometry and bond angle for the molecules can be identified by the VSEPR model from the molecule central atom which is enclosed by the electron pairs.
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If 6.00 g of carbon is burned completely, what volume of carbon dioxide gas is released at STP?
12 g of carbon gives 44 g of carbon dioxide. Then 6 g of carbon will give 22 g of carbon dioxide. One mole or 44g of carbon dioxide contains 22.41 L at STP. Hence, 22 g contains 11.2 L.
What is STP condition ?The standard temperature and pressure is called STP condition. A temperature of 298 K and pressure of 1 atm is called standard temperature and pressure.
At STP condition, the volume of one mole of any substance is 22.4 liters. One mole corresponds to 6.02 × 10²³ molecules.
One mole of carbon gives one mole of carbon dioxide.
mass of carbon = 12 g /mol
molar mass of carbon dioxide = 44 g/mol
then, 6 g of carbon will give,
6/12× 44 = 22 g of CO₂.
22 g of CO₂ is 0.5 moles. One mole of CO₂ contains 22.4 L at STP. then 0.5 moles of CO₂ contains 11.2 L at STP.
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a ballon with helium gas is initally at pressure 1 atm(101325 Pa) with volume =1 m∧3 and temperature of T=300 K. part a. how many atoms of helium are in the gas? part b. how many moles? part c. what is the total kinetic energy of the gas? part d. if the temperature is increased to T=400k, what is the new volume? part e. if the volume is decreased to V=.2m ∧3 what is the new pressure?
(a) The number of helium atoms in the gas can be calculated using Avogadro's number and the ideal gas law.
(b) The number of moles of helium can be determined by dividing the number of atoms by Avogadro's number.
(c) The total kinetic energy of the gas can be calculated using the equation for the average kinetic energy of gas particles.
(d) The new volume can be determined using the ideal gas law and the given temperature change.
(e) The new pressure can be calculated using the ideal gas law and the given volume change.
To determine the number of helium atoms in the gas, we can use Avogadro's number (6.022 × 10^23 atoms/mol) and the ideal gas law. Since the gas is initially at 1 atm and 300 K, we can calculate the number of atoms using the formula: (number of atoms) = (pressure) × (volume) / (RT), where R is the ideal gas constant. Substitute the given values and calculate the result.
Once we have the number of atoms, we can find the number of moles by dividing the number of atoms by Avogadro's number. This will give us the quantity of helium in moles.
The total kinetic energy of the gas can be calculated using the equation: (total kinetic energy) = (3/2) × (number of moles) × (R) × (temperature), where R is the ideal gas constant. Substitute the given values and calculate the total kinetic energy.
To determine the new volume when the temperature is increased to 400 K, we can use the ideal gas law. Rearrange the formula PV = nRT to solve for the new volume V. Substitute the given values and calculate the new volume.
When the volume is decreased to 0.2 m³, we can use the ideal gas law again to find the new pressure. Rearrange the formula PV = nRT to solve for the new pressure P. Substitute the given values and calculate the new pressure.
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in a combination reaction, isooctane is theOxidizerFuelOxidizing AgentAcid
Answer: We can say that isooctane is best classified as a fuel (letter B) in a combining reaction.
Explanation:
The question requires us to choose among the options given which one best corresponds to the role of isooctane in a combining reaction.
Considering the options given, we can make the following comments:
- an oxidizer can be defined as "a source of oxygen". In a simple combustion reaction, for example, oxygen gas (O2) is usually used as the oxidizer.
- a fuel, in a combustion reaction (which is classified as a combining reaction), is the substance that has stored energy, or, in other words, the substance that will be burned.
- an oxidizing agent, in a redox reaction, is the substance that suffers reduction and provokes the oxidation of another substance in the reaction.
- many definitions can be used for an acid, but we can simply say that it is a substance able to realease H+ ions.
Considreing the definitions above, the structure of isooctane and the type of reaction given, we can say that isooctane best fits as a fuel (letter B).
Which of the following is an acid-base neutralization reaction? (1 point) Sn + 2HBr yields SnBr2 + H2 HCl + KOH yields KCl + H2O 2AlCl3 + 3Ca(OH)2 yields 2Al(OH)3 + 3CaCl2 2C2H6 +7O2 yields 4CO2 + 6H2O
Answer:
HCl + KOH ⇒ KCl + H₂O
Explanation:
Which of the following is an acid-base neutralization reaction?
Sn + 2HBr ⇒ SnBr₂ + H₂. NO. This is a single displacement reaction.
HCl + KOH ⇒ KCl + H₂O. YES. An acid reacts with a base to form salt and water.
2AlCl₃ + 3Ca(OH)₂ ⇒ 2Al(OH)₃ + 3CaCl₂. NO. This is a double dispacement reaction.
2C₂H₆ +7O₂ ⇒ 4CO₂ + 6H₂O. NO. This is a combustion reaction.
What is true and false
For each statement below, write true or false.
16. The mass of an object can vary with the object's location.
17. A mass measurement includes the effect of Earth's gravitational pull on the object
being measured.
18. Scientists measure the amount of matter in terms of mass.
19. Subtle differences in weight exist at different locations on Earth.
20. Your mass on the Moon would be smaller than your mass on Earth.
Answer:
16. false (mass always stays the same)
17. false (that's weight)
18. true
19. true (I think)
20. false (same as 16 and 17)
hope I could help
True and false for each statement is:
16. false
17. false
18. true
19. true
20. false
What is mass?Mass is the quantity of matter. It calculates the inertia of the body. It essentially refers to a body of matter's resistance to changing its speed or location in response to the application of a force. The change caused by an applied force is smaller the more mass a body has.
The mass of a body is the same everywhere, but the weight changes in different places due to gravity. The force of gravity is different in different places, so the weight changes.
That's, why the mass measurement does not include the effect of Earth's gravitational pull on the object. It's the weight.
Thus, the correct options are 16. false, 17. false, 18. true, 19. true, and 20. false.
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Which statement is a testable hypothesis?
A. Beans are the best plants to use in a science fair experiment.
B. Watering bean plants with salt water will make them grow faster.
C. Bean plants will become extinct before corn plants do.
D. Everyone can grow beans given the right instructions.
please help. i’ll give brainliest if ur answer is correct
Answer:
b
Explanation:
I think B because its saying that perhaps watering with salt water would make them grow faster, you don't know yet unless tested.
let me rephrase that: assuming the strength of an acid is determined by how well a substance is willing to let go of its proton and taking into consideration the fact that electrons are bound to orbitals (BUT may move between them) is true, then would acids still be possible if the positions of electrons and protons were swapped?
The strong acid and strong base has high rate constant of dissociation. The rate constant for weak acid and base for the dissociation is low, they do not easily dissociate in water. Therefore, no, acid would not remain acid if the positions of electrons and protons were swapped.
What are acid and base?Acid is a solution which releases H⁺ hydrogen ion when dissolved in water. Base releases hydroxide ion OH⁻ ion when dissolved in water.
pH is a measurement of amount of hydronium ion H₃O⁺ in a given sample. Strength of acidic nature is directly proportional to the concentration of hydronium ion.
On subtracting pH from 14, we get pOH which measures the concentration of hydroxide ion in a given solution. Temperature affect the pH. At room temperature pH scale is between 0 to 14. 7 is the pH of neutral solution. No, acid would not remain acid if the positions of electrons and protons were swapped.
Therefore, no, acid would not remain acid if the positions of electrons and protons were swapped.
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One type of atomic particle that is found in the nucleus does not contribute to an elements atomic number what are two characteristics of this type of atomic particle
This particle is called neutron. It's characteristics are:
1. Neutron is electrically.
2. They show magnetic properties
consider a sample of compound contain 1.719c 0.284gh so find emprisical formula
how many moles of nitrous acid can be produced if 1.83 x 1023 molecules of nitrogen monoxide reacts?
The maximum amount of nitrous acid that can be produced is 0.304 moles.
The balanced chemical equation for the reaction of nitrogen monoxide (NO) with oxygen (O2) to produce nitrogen dioxide (NO2) is as follows:
\(2 NO + O2 → 2 NO2\)
Nitrous acid (HNO2) can be made by combining nitrogen dioxide and water:
\(HNO2 + H+ NO2 + H2O\)
We can see that it takes two moles of NO to produce two moles of NO2, now we can then react with one mole of water to produce one mole of HNO2. As, we must first determine the number of moles of NO in 1.83 x 1023 molecules, and then use stoichiometry to determine the number of moles of HNO2 that can be produced.
The following is the balanced chemical equation for the reaction of nitrogen monoxide (NO) with oxygen (O2) to produce nitrogen dioxide (NO2):
\(2 NO + O2 → 2 NO2\)
By combining nitrogen dioxide and water, nitrous acid (HNO2) can be produced:
\(+ HNO2 + HNO2 + H2O\)
We can see that two moles of NO are required to produce two moles of NO2, which can then be combined with one mole of water to produce one mole of HNO2. Therefore, we have to calculate the number of moles of NO in 1.83 x 1023 molecules before using stoichiometry to calculate the number of moles of HNO2 that can be produced.
The balanced equation's coefficients represent mole ratios, we can see that 1 mole of NO2 is produced from 2 moles of NO. So the total number of moles of NO2 produced is 0.304 moles. Then, 0.304 moles of NO2 can combine with 0.304 moles of water to form 0.304 moles of HNO2.
As a result, the maximum amount of nitrous acid that can be produced is 0.304 moles.
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Summarize the meaning of the term activation energy.
Answer:
Activation energy, in chemistry, the minimum amount of energy that is required to activate atoms or molecules to a condition in which they can undergo chemical transformation or physical transport.
Explanation:
which formulas represent ionic compounds and which represent covalent compounds?
a. NaCl, H2O
b. CH4, MgO
c. CO2, KBr
d. NH3, CaF2
The formula that represents ionic compounds is NaCl, MgO, KBr, and CaF2; while those that represent covalent compounds are H2O, CH4, CO2, and NH3. Option D is correct .
Ionic compounds are formed by the transfer of electrons, while covalent compounds are formed by sharing of electrons. An ion is an atom that has either gained or lost electrons to get a stable electron configuration. A positive ion is formed when an atom loses one or more electrons. A negative ion is formed when an atom gains one or more electrons. The structure of an ionic compound is typically crystalline.
A crystal lattice structure is made up of repeating patterns of ions. They have high melting and boiling points, do not dissolve in nonpolar solvents, and can be electrically conductive when dissolved in water. They are usually solids at room temperature.Covalent compounds are made up of non-metals. The atoms share electrons to create covalent bonds in a covalent compound. Each molecule in a covalent compound has a definite shape.
They have lower melting and boiling points than ionic compounds, dissolve easily in nonpolar solvents, and do not conduct electricity. They can exist as a gas, liquid, or solid at room temperature.
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The two products that are formed when a solution of HNO3 and a solution of NaOH react are water and:
NaNO2.
NaNO3.
NaHNO.
NaHNO3.
Answer: NaNO3 (Sodium Trioxonitrate (V) )
Explanation:
The equation of the reaction is; HNO3 + NaOH -----> H2O + NaNO3
Answer: its B
Explanation:
Integrated Problem 10.51The alkyl halide 1-bromopropane is one of a number of compounds being considered as a replacement for chlorofluorocarbons as an industrial cleaning solvent. In a computational study of its atmospheric oxidation products, bromoacetone (structure below) was determined to be the major product (J. Phys. Chem. A 2008, 112, 7930–7938). The proposed mechanism involves four steps: (1) hydrogen abstraction by an OH radical, (2) formation of a peroxy radical by coupling with O2, (3) abstraction of an oxygen atom by NO, thus forming NO2 and an alkoxy radical, and (4) abstraction of a hydrogen atom by O2. Draw the mechanism that is consistent with this description.Step 1: Add any remaining curved arrows to show the first step, hydrogen abstraction by an OH radical, and modify the given structure to draw the resulting intermediate.
In the proposed mechanism for the atmospheric oxidation of 1-bromopropane, the first step involves hydrogen abstraction by an OH radical. This step is crucial in initiating the reaction. To depict this step, we need to add the remaining curved arrows and modify the given structure to show the resulting intermediate.
Step 1: Hydrogen abstraction by an OH radical
In this step, the OH radical abstracts a hydrogen atom from the 1-bromopropane molecule. The OH radical donates its unpaired electron to form a new bond with the hydrogen atom, resulting in the formation of a water molecule. Simultaneously, the bromine atom forms a new bond with the adjacent carbon atom, generating a carbon-centered radical.
The resulting intermediate after hydrogen abstraction by the OH radical is a carbon-centered radical with a bromine atom attached. The structure can be represented as follows:
[CH3CH(Br)•]
In this structure, the dot (•) represents the unpaired electron on the carbon atom, indicating its radical nature. The bromine atom remains attached to the carbon atom.
The first step of the proposed mechanism for the atmospheric oxidation of 1-bromopropane involves hydrogen abstraction by an OH radical. This results in the formation of a carbon-centered radical with a bromine atom attached. Understanding the individual steps of the mechanism provides insights into the overall process of atmospheric oxidation and the formation of bromoacetone as a major product.
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find all states for the lowest energy electronic configuration for the titanium atom allowed by the pauli principle. you do not have to specify the j quantum number. arrange the states in order of increasing energy.
A titanium(Ti2+) ion's electronic configuration is [Ar]3d2.
The greatest L = 1 + 2 = 3 3F for two in d in parallel spins and two unpaired electrons.
L = 3, S = 1, J = 4, 3, 2, and 3F2 are less than halfway full.
High J indicates little energy if the shell is filled to a level higher than halfway. The ground state is accurately predicted by these criteria. Total angular momentum, quantified by the number J, is the sum of an atom's total orbital angular momentum (measured in terms of L) and total spin angular momentum (measured in terms of S). L and and do not always have to be pointing in the same direction, therefore J can range from |L-S| to |L+S|.
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1)Predict whether the following solutions are acidic, basic or nearly neutral:
(a)
N
a
B
r
(b)
K
2
S
O
3
(c)
N
H
4
N
O
2
(d)
K
2
H
P
O
4
NaBr: Nearly neutral, K2SO3: Basic, NH4NO2: Acidic, K2HPO4: Basic
NaBr: Sodium bromide is a salt formed from a strong base (NaOH) and a strong acid (HBr). Salts of strong acids and strong bases are neutral, so NaBr is nearly neutral.
K2SO3: Potassium sulfite is a salt formed from a strong base (KOH) and a weak acid (H2SO3). Salts of strong bases and weak acids are basic, so K2SO3 is basic.
NH4NO2: Ammonium nitrite is a salt formed from a weak base (NH3) and a weak acid (HNO2). Salts of weak acids and weak bases can exhibit acidic or basic properties depending on their relative strengths. In this case, ammonium ions (NH4+) act as a weak acid, making NH4NO2 acidic.
K2HPO4: Dipotassium hydrogen phosphate is a salt formed from a strong base (KOH) and a weak acid (H3PO4). Similar to (b), salts of strong bases and weak acids are basic. Therefore, K2HPO4 is basic.
The predicted acidity or basicity of the given solutions is as follows: (a) nearly neutral, (b) basic, (c) acidic, and (d) basic. The nature of the solutions depends on the specific salts formed and the relative strengths of the acids and bases involved.
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What is the percent Nitrogen in Mg(NO2)2?
what is loamy soil ?
Answer:
Loam is soil composed mostly of sand, silt, and a smaller amount of clay. By weight, its mineral composition is about 40–40–20% concentration of sand–silt–clay, respectively.
Explanation:
Oxidation often removes ...?
Answer:
Electrons.
Explanation:
Answer:
oh yes chemical oxidation removes
Explanation:
but i m not sure hope it is right i haven't looked book this time
Methane gas is compressed isothermally from 1. 00 atm to 1. 75 atm. The
initial volume is 20 L. Find the final volume of the gas?
After solving the problem the final volume of the gas is 35L.
What is final volume?The final volume is the amount of space occupied by an object, gas, or liquid in its finished state. It is the total volume of a substance, regardless of any changes that may have occurred to it during a process.
The final volume of the gas can be calculated using the ideal gas law. The ideal gas law states that:
PV = nRT
where P is pressure, V is volume, n is the amount of substance, R is the ideal gas constant and T is temperature.
Since this is an isothermal process, the temperature is constant and can be cancelled out. We can rearrange the equation to:
V2 = V1 (P2/P1)
where V2 is the final volume and V1 is the initial volume.
Substituting in the values, we get:V2 = 20L (1.75/1.00)
V2 = 35L
Therefore, the final volume of the gas is 35L.
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What kitchen items contain NaHCO3?
Answer:
Things like detergents, powders, drip caps, and deodorizers have NaHCO3 in them.
If 43.6J of heat is added to a 0.985g block of metal, the temperature of the metal increases by 12.4C. Calculate the specific heat capacity of the metal.
The specific heat capacity of the metal when the temperature rises by 12.4°C is 3.569 J/g°C.
What is specific heat capacity?Specific heat capacity is defined as the heat capacity of the substance divided by the mass of the substance.It is the amount of heat added to one unit mass of substance to increase it's temperature by one unit.The SI unit is joule per kelvin per kilogram.
It varies with temperature and for each different state of matter it is different.Specific heat capacity of a substance is higher when it is allowed to expand as a result of heating.It is measured by a technique called differential scanning calorimetry.
It is calculated by the given formula,
W=mcΔt
where W=energy supplied
m= mass of substance
c=specific heat capacity
Δt= temperature change
Substituting the values given in the problem in the above equation,
c=43.6/0.985×12.4=3.569 J/g°C
Thus, the specific heat capacity of metal is 3.569 J/g°C.
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N each reaction box, place the best reagent or reactant from the list supplied. Stoichiometry is omitted
Stoichiometry is omitted reactant. Reactants are the substances that participate in a chemical reaction. The process by which atoms, the fundamental building blocks of matter.
Rearrange themselves to form new combinations is described by a chemical reaction. Reactants - Reactants are the substances that participate in a chemical reaction. Products - Substances formed as a result of the formation of new bonds in a chemical reaction are referred to as products. As an example: H2 and O2 are reactants in this case because they participate in the chemical reaction. Reactants are the starting materials and appear on the left side of the equation. The products of the reaction are written on the right-hand side of the equation.
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