What patterns do you notice in the table in terms of protons, electrons, and valence electrons? how might these relate to an element being a metal or nonmetal?

Answer:

if hyper its probaly because the have ADHD which is a type of drug that helps people with behavior disorders . the might have ticks wich is something that people can not control.

Explanation:

Mass of kmno4 does she need to make the solution is 128.375 g.

Volume = 2.5 L

Concentration = 0.325 M

Potassium permanganate (Molar mass )= 39 + 55 + (16 x 4) = 158 g

Calculate the moles of KMnO₄

Formula

moles = molarity x volume

moles = 0.325 x 2.5

moles = .8125

Calculate the grams of KMnO₄

                   158 g KMnO₄ ------------------ 1 mol

                      x     ------------------ .8125

                           x = (1.95 x 158)/1  

                         x = 128.375 g

The amount of a solute in moles to all the liters of a solution is known as its molarity. The solvent and solute are both present in the solution. The ratio of the moles of a solute to the kilograms of a solvent is known as molality, on the other hand.

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The statement below which is not supported by the kinetic-molecular theory is that the total pressure of a mixture of gases is equal to the sum of the pressures of all of the gases in the mixture which is therefor denoted as option A.

This states that gases are composed of a large number of particles that behave like hard, spherical objects in a state of constant, random motion.

The total pressure by a mixture of gases is equal to the sum of the partial pressures of each of the constituent gases and at  a given temperature, all gases have the same average kinetic energy thereby making option A the correct choice.

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Hi there,

My answer would be False.

Please mark

Thanks

The statement is false that if one person reacts to something in a certain way, that means ALL people will react to the same situation in the same way (Johnny gets stung by a bee, now he kills every bee he sees).

According to this question, if one person reacts to something in a certain way, that means ALL people will react to the same situation in the same way.

An example then states that Johnny gets stung by a bee and begins to kill every bee he sees.

This statement is false because when Johnny gets stung by a bee, everyone should react to the situation the same way Johny Johnny did.

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Answer:

Soda all start with watered down corn syrup. To get the carbonation companies have different ways of doing this all of which are very different. The last step is to add artificial and natural flavors like lemon and lime, this is also the step in which sugar and preservatives are added.

Explanation:

I hope this answer your question, srry I couldn't go into detail.

Answer:

Kerosene

Explanation:

You use process of elimination in this question

None of them except for Kerosene can power a bulb

Explanation:

sodium chloride

thank me later

Answer:?

?Explanation:

The EPA stream quality indicator for dissolved oxygen in stream water is:c. 5 mg per liter

Dissolved oxygen (DO) is an important indicator of the health of a water body. The EPA (Environmental Protection Agency) has set guidelines for the minimum dissolved oxygen levels to support a healthy aquatic ecosystem. For streams, the recommended minimum level of dissolved oxygen is 5 mg per liter. This level ensures that the water can support a diverse range of aquatic life, including fish, invertebrates, and other organisms.
To maintain good water quality, it's essential to regularly monitor dissolved oxygen levels using various sampling methods and equipment. If dissolved oxygen levels drop below the recommended threshold, it can indicate problems such as pollution or excessive nutrient loading, which can lead to eutrophication and negatively impact the ecosystem.

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Answer:

A solid

the internolecular forces are packed and leave no space behind

An exothermic process is one that gives off heat.

Explanation:

This heat is transferred to the surroundings. An endothermic process is one in which heat has to be supplied to the system from the surroundings.

Given data:H2O vapor content: 13 gramsH2O vapor capacity: 52 grams at 25 degrees Celsius 13 grams at 10∘C52 grams at 30∘CFormula used to find the dew point:$$\dfrac{13}{52}=\dfrac{(A*3\pi)/(ln100)}{(17.27-A)}$$$$\frac{1}{4}=\dfrac{(A*3\pi)/(ln100)}{(17.27-A)}$$

Where A is the constantDew Point:It is the temperature at which air becomes saturated with water vapor when the temperature drops to a point where dew, frost or ice forms. To solve this question, substitute the given data into the formula.$$13/52=\dfrac{(A*3\pi)/(ln100)}{(17.27-A)}$$$$13(17.27-A)=3\pi A(ln100)$$By simplifying the above expression, we get$$A^2-17.27A+64.78=0$$Using the quadratic formula, we get$$A=9.9,7.4$$

The dew point is 7.4 since it is less than 10°C.More than 100:The term "More than 100" has not been used in the question provided.

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Water does  not stick to the leaves of the plant  owing to the fact that the leaves has a waterproof cuticle.

We know that the leaves are the parts of the plant that are involved in photosynthesis. Photosynthesis is the process by which green plants produce their own food in the presence of sunlight and chlorophyll. We know that the leave has an outer protective covering.

The tissue that plays this outer covering of a plant for is the  epidermis and its waxy cuticle. It prevents damage to the plant.

Water does  not stick to the leaves of the plant  owing to the fact that the leaves has a waterproof cuticle.

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Answer:

to satisfy the law of conservation of mass

Explanation:

have great day

Answer:

It is necessary for chemical equations to be balanced because of the law of conservation of mass (the mass of the products = the mass of the reactants).

Chemical equations follow/represent this law

The given balanced equation is:Mg3N2(s) + 6H2O(l) → 3Mg(OH)2(s) + 2NH3(g)The stoichiometric ratio of the number of moles of H2O and NH3 is 6:2 or 3:1. Therefore, 7.5 g of H2O produces (2/3) × 7.5 g of NH3=5 g of NH3.

Now, we need to calculate the volume (L) of NH3 gas at STP is produced by the complete reaction of 7.5 g of H2O.According to ideal gas lawPV = nRTwhere, P = pressureV = volumeT = temperaturen = number of moles of gasR = gas constantIn case of STP, P = 1 atm, T = 273 K, and R = 0.082 L atm K−1 mol−1Now, n = mass/molar mass=5 g / 17 g mol¯¹ (molar mass of NH3)= 0.2941 molSo, PV = nRTV = (nRT)/PV = (0.2941 mol × 0.082 L atm K−1 mol−1 × 273 K) / 1 atm= 6.35 LAns: The volume (L) of NH3 gas at STP produced by the complete reaction of 7.5 g of H2O is 6.35 L.

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Answer:

#4: 0.89 mol/L #5: 0.36 mol

Explanation:

#4: Morality is Moles/ Liters

So take 3.2 mols ÷ 3.6 L = 0.8888... since there are 2 sig figs in the question the answer would round to 0.89 mol/L

#5: to find the number of moles needed, you take the mol/L and multiply that by the volume.

0.89 mol/L ×0.400L = 0.356 mols. the liters cancel out. Since 0.89 has the least number of sig figs your final answer should have 2. which it 0.36 mols.

I hope this helps, good luck!

The amount of heat energy (q) released in the reaction can be calculated using the following formula:q = CΔTWhere C is the heat capacity of the calorimeter and ΔT is the change in temperature. Substituting the values into the formula, we get:q = 1265 J/°C × 2.78°Cq = 3520.7 Therefore, 3520.7 joules of heat were released in the reaction.

A calorimeter is an instrument used to measure the amount of heat energy transferred to or from a substance in a chemical reaction. It is designed to prevent heat exchange between the system and the surroundings.The heat capacity of the calorimeter is the amount of heat energy required to raise its temperature by one degree Celsius. In this case, the heat capacity of the calorimeter is 1265 J/°C.The temperature of the calorimeter was initially 22.34°C and it changed to 25.12°C due to a chemical reaction. The change in temperature (ΔT) can be calculated by subtracting the initial temperature from the final temperature.ΔT = T₂ - T₁ = 25.12°C - 22.34°C = 2.78°CSince the calorimeter is designed to prevent heat exchange with the surroundings, the heat energy released in the reaction is absorbed by the calorimeter. The amount of heat energy (q) released in the reaction can be calculated using the following formula:q = CΔTWhere C is the heat capacity of the calorimeter and ΔT is the change in temperature.Substituting the values into the formula, we get:q = 1265 J/°C × 2.78°Cq = 3520.7 JTherefore, 3520.7 joules of heat were released in the reaction.

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Answer:

YoungBoy Never Broke Again. Explanation: He is the goat

Answer:

a) 2

b) 2

c) 5

d) 5

e) 5

Explanation:

a) There is 1 Ag atom and 1 Cl atom. When there's no subscript number next to an element, it means there is only one.

b) There is 1 Ca atom and 1 O atom.

c) There are 3 Mg atoms (there's a subscript 3 next to Mg) and 2 N atoms.

d) There are 2 Al atoms and 3 O atoms.

e) There are 2 Sc atoms and 3 S atoms.

Answer:

Here's what I get from one source.

Explanation:

\(\begin{array}{lc}\textbf{Source} &\textbf{Contribution \%} \\\text{Space heating }& 45\\\text{Water heating} &18\\\text{Space cooling} & 9 \\\text{Computers/Electronics} & 6 \\\text{Lighting} & 6 \\\text{Cooking} & 4 \\\text{Refrigeration} & 4 \\\text{Wet cleaning} & 3 \\\text{Other} & 5 \\\end{array}\)

The pie chart is in the Figure below.

Answer:

the molecule is formed by covalent bond , and each hydrogen atom forms a single bond with sulphur atom.

Answer:

Evaporation

Explanation:

Water at the surface of the ocean rivers and lakes can become water vapor and move into the atmosphere with a little added energy from the Sun through a process called evaporation. Snow and ice can also become water vapor through a process called sublimation. See also why do variations in generation time exist

Different metals create particular colored flames during in the flame test since each metal has a different arrangement of electrons, which produces specific colors of light when heated. Since the visible flame color is only of the metal alone, the metal may be recognized.

The precise sizes of the potential energy jumps differ from metal to metal.As a result, the flame color of each metal will differ due to its unique spectral line pattern.The movement of a electrons inside the metal ions contained in the compounds results in the hues of the flame.

Because the energy levels of the electrons travelling around the nucleus fluctuate depending on the element, different compounds react to fire to produce distinct colored flames.

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The correct answer to the first part of your question is option (c): Energy is released by water vapor as it condenses.

When water vapor condenses into liquid water, it undergoes a phase change from a gaseous state to a liquid state. During this phase change, energy is released in the form of latent heat. This release of energy occurs because the water molecules in the vapor phase are more energetic and have higher kinetic energy compared to the water molecules in the liquid phase.

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Answer:

The answer will be "B"

Explanation:

It is B, because as we can see in the problem, it shows that there are three hydrogen gas, which is H₂. So, it shows that the ratio of Hydrogen gas to Ammonia is 3:2. In the answer, it says for every 3 mol of H₂ 2 moles of ammonia is produce. Therefore, B is correct.

Have a good day, any questions let me know. If you want, you can mark as brainliest if you like the answer!

At standard temperature and pressure (STP), a 2.50 L flask will contain 2.50 L x (1 mole/22.4 L) x (6.022 x 10^23 molecules/mole) = 6.50 x 10^25 molecules.

At standard temperature and pressure (STP), the ideal gas law states that the pressure of a gas is directly proportional to its absolute temperature and inversely proportional to its volume. This means that, for a given temperature, the number of gas molecules in a flask is inversely proportional to the volume of the flask.

For example, if we have a flask with a volume of 2.50 L, then the number of gas molecules it contains can be calculated by dividing the total number of moles by the volume of the flask. The total number of moles can be calculated by multiplying the number of moles per liter (1 mole/22.4 liters at STP) by the volume of the flask (2.50 L). Multiplying the number of moles by Avogadro's constant (6.022 x 10^23 molecules/mole) yields the total number of molecules in the flask. Thus, a 2.50 L flask at STP will contain 2.50 L x (1 mole/22.4 L) x (6.022 x 10^23 molecules/mole) = 6.50 x 10^25 molecules.

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The repulsion of the electron pair surrounding the core atom has a significant impact on the geometry or shape of the electron.

The tendency of the electron pairs in an atom to repel one another when they are present is known as electron pair repulsion.

The more repulsion there is between the electron pairs, the more the electrons want to organize themselves to lessen it.

Here, the issue of how electron pair repulsion affects molecule geometry is raised.

The fundamental explanation is that the molecule will change its structure to keep the repelling electron pair apart.

The electron pair repulsion also plays a significant role in determining molecular geometry, since molecules prefer to modify their form and geometry in response to the electron pair.

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Answer:

1,270 cm

Explanation:

100 g (cm^3/7.874 g)(m/cm^3)(100cm/m)

= 1270 cm

Answer:

See below.

Explanation:

When hydrogen burns, it would release energy. Not absorb energy!