Answers
Answer:
1) Identify a limiting reagent from a set of reactants.
2 ) Calculate how much product will be produced from the limiting reagent.
3) Calculate how much reactant(s) remains when the reaction is complete.
Explanation:
hope this helps
Related Questions
Based on this passage, the term "mechanical disintegration" means
breaking into small pieces
separation of solid and liquid
evaporation of gases in talus
cultivation of grains
Answers
Mechanical disintegration means breaking into small pieces (option A).
What is mechanical digestion?Digestion is the process occuring in the gastrointestinal tract, by which food is converted into substances that can be utilized by the body.
Digestion can, however, be mechanical/physical or chemical/enzymatical. The mechanical digestion involves the breaking down of food into smaller pieces by teeth.
Therefore, according to this question, there is no passage, however, the meaning of mechanical disintegration can be easily detected in biology.
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What is the final temperature after 840 Joules is absorbed by 10.0g of water at 25.0
C?
Answers
The final temperature of the water is: T_final = 45.0°C
We can use the formula for the specific heat capacity of the water to solve this problem:
q = mcΔT
First, we can calculate the initial energy of the water:
q = mcΔT
q = (10.0 g) (4.184 J/g°C) (25.0°C)
q = 1,046 J
Next, we can calculate the final temperature after absorbing 840 J:
q = mcΔT
840 J = (10.0 g) (4.184 J/g°C) (ΔT)
ΔT = 20.0°C
Therefore, the final temperature of the water is:
T_final = T_initial + ΔT
T_final = 25.0°C + 20.0°C
T_final = 45.0°C
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How many grams are in 2.3 x 1024 formula units of KNO3?
Answers
390 g KNO₃
General Formulas and Concepts:ChemistryAtomic Structure
Reading a Periodic TableUsing Dimensional AnalysisAvogadro's Number - 6.022 × 10²³ atoms, molecules, formula units, etc.MathPre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to Right Explanation:Step 1: Define
2.3 × 10²⁴ formula units KNO₃
Step 2: Identify Conversions
Avogadro's Number
Molar Mass of K - 39.10 g/mol
Molar Mass of N - 14.01 g/mol
Molar Mass of O - 16.00 g.mol
Molar Mass of KNO₃ - 39.10 + 14.01 + 3(16.00) = 101.11 g/mol
Step 3: Convert
\(2.3 \cdot 10^{24} \ formula \ units \ KNO_3(\frac{1 \ mol \ KNO_3}{6.022 \cdot 10^{23} \ formula \ units \ KNO_3} )(\frac{101.11 \ g \ KNO_3}{1 \ mol \ KNO_3} )\) = 386.172 g KNO₃
Step 4: Check
We are given 2 sig figs. Follow sig fig rules and round.
386.172 g KNO₃ ≈ 390 g KNO₃
On one summer day, the sun heated the water in a swimming pool from 20C in the morning to 24C in the afternoon. If the pool held 40,000 liters of water(40,000,000 grams), how much energy in joules? The specific heat of water is 4.184 J/(g C).
Answers
Answer:
MI
Explanation:
Homes for Sale in the United States and Canada and the United
On one summer day, the sun heated the water in a swimming pool from 20C in the morning to 24C in the afternoon. If the pool held 40,000 liters of water (40,000,000 grams), 669440000 J energy is required.
What is specific heat?The amount of heat needed to raise a substance's temperature by one degree Celsius per gram is called specific heat.
The specific heat capacity of a substance, also known as the massic heat capacity, is the heat capacity of a sample of the substance divided by the mass of the sample.
Given:
ΔT = 24-20 = 4°C
c = 4.184 J/(g C)
m = 40,000,000 grams
Q =?
Q = mcΔT
Where,
Q = heat energy
m = mass
c = specific heat capacity
Δ T = change in temperature
Substitute given values in the equation:
Q = 40,000,000 × 4.184 × 4
Q = 669440000 J
Thus, 669440000 J energy is required.
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To find the order of a reaction with respect to one reactant, you will monitor the as the of . is changed.
Answers
The order of reaction is defined as the power to which the concentration of the reactants are raised in the rate equation of the reaction.
The order of reaction can be used to determine how a particular reactant affects the reaction. In order to find the order of a reaction with respect to a particular reactant, the concentration of the reactant is changed while keeping the concentration of other reactants constant. The rate of reaction is then measured and compared with the rate of reaction when the concentration of the reactant is not changed.The order of reaction with respect to a reactant can be determined using the following method:First, select a reactant whose order needs to be determined and change its concentration while keeping the concentration of other reactants constant. For example, if we want to find the order of reaction with respect to reactant A, we will change the concentration of A and keep the concentration of reactant B constant.Second, measure the rate of reaction at different concentrations of the reactant A. The rate of reaction can be measured by any suitable method such as change in color, pH, or by measuring the amount of product formed with time. A graph is plotted with rate of reaction on the y-axis and concentration of reactant A on the x-axis. The graph should be a straight line.Third, if the graph is a straight line passing through the origin, the order of reaction with respect to reactant A is one. If the graph is a straight line but does not pass through the origin, the order of reaction with respect to reactant A is two. If the graph is not a straight line, the order of reaction with respect to reactant A is either zero or fractional.For such more question on concentration
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Please i meed help quick and thank you
Answers
It is the 4th scenario is the dependent event. There are 7 gold tokens and 4 silver tokens in a cup. The first student randomly draws a gold token and keeps it. A second student randomly draws a gold token from the cup.
How did we identify the dependent event?The fouth scenario is a dependent event because the probability of the second student drawing a gold token is affected by the outcome of the first student's draw.
If the first student draws a gold token, then there are only 6 gold tokens left in the cup, the probability changes. but if the first student does not draw a gold token, then there are 7 gold tokens left in the cup, the probability will remain the same
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Predict and explain the structure of the major and minor products when hydrogen bromide is added to 2-methylbut-2- ene, (Ch3)2CCHCH3
Pls help with homework!!!!
Answers
When hydrogen bromide (HBr) is added to 2-methylbut-2-ene ((CH3)2CCHCH3), an electrophilic addition reaction takes place, where the π bond of the alkene is broken, and the hydrogen and bromine atoms are added to the resulting carbocation.
The reaction proceeds through a Markovnikov addition, where the hydrogen atom attaches to the carbon atom with the greater number of hydrogen atoms.
In this case, the initial addition of HBr to 2-methylbut-2-ene leads to the formation of a primary carbocation, as the positively charged carbon atom only has one alkyl group attached to it. The primary carbocation is relatively unstable, and it can undergo a rearrangement to form a more stable secondary carbocation.
The major product that is typically obtained is the 2-bromo-2-methylbutane. The hydrogen atom from HBr adds to the carbon with three hydrogen atoms (the more substituted carbon), resulting in the formation of a secondary carbocation.
On the other hand, a minor product is also formed, which is 3-bromo-2-methylbutane. This product arises from the addition of HBr to the primary carbocation, which is less stable. Although the primary carbocation is less favored, it can still be formed and lead to the formation of the minor product.
In summary, the addition of HBr to 2-methylbut-2-ene yields two products: the major product is 2-bromo-2-methylbutane, resulting from the addition of HBr to the more stable secondary carbocation, and the minor product is 3-bromo-2-methylbutane, originating from the less stable primary carbocation.
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Which element is more electronegative, Ge or Bi
Answers
Answer:
Ge is more electronegative
Explanation:
i hope this helps luv! ❤️✨❤️
Which of the following is used to keep track of the heat flow inside a calorimeter?
Answers
Any time a liquid loses or receives energy, the temperature of the liquid changes.To calculate the amount pf energy change, the calorimeter monitors the weight of the fluid as well as the temperature change.
In a calorimeter, what thermometer is used?The 6000 series calorimeters' control systems serve as the foundation for the 6772 Calorimetric Thermometer, a high precision temperatures measuring device.It is a crucial component of both the 6755 Solution Calorimeter and the 6725 Semi-micro Calorimeter.
What equipment is utilized in calorimetry?The calorimeter is a piece of equipment used in calorimetry, a procedure for calculating heat capacity and measuring the temperature of chemical processes or other physical changes.Among the most popular kinds are differential scanning operating, thermal micro cathode rays, titration calorimeters, and accelerated rate calorimeters.
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The heat of vaporization of water is 540 calories per gram. Based on your calculations in
question 13, how many calories would be required to raise the same mass of water and
convert it from water liquid (95 0C) to water gas (1000C)?
Show your work for partial credit.
Step 1: Water raises from 95°C to 1000C
Answers
To convert 100.0 g of water at 20.0 °C to steam at 100.0 °C requires 259.5 kJ of energy.
For this problem, there are only two heats to consider:
q
1
= heat required to warm the water from 20.0 °C to 100.0 °C.
q
2
= heat required to vapourize the water to steam at 100 °C.
q
1
=
m
c
Δ
T
=
100.0 g × 4.184 J
∘
C
−
1
g
−
1
×
80.0
∘
C
=
33 472 J
q
2
=
m
Δ
H
vap
=
100.0 g × 2260 J⋅g
−
1
=
226 000 J
q
1
+
q
2
=
( 33 472 + 226 000) J = 259 472 J = 259.5 kJ
(4 significant figures)
The irreversible isomerization A
B was carried out in a batch reactor and the following concentration time data were obtained:
Time vs Concentration data in a Batch reactor
t 0 3 5 8 10 12 15 7.5
mol/h 4 2.89 2.25 1.45 1.0 0.65 0.25 0.07
Determine the reaction order,
, and the specific reaction a rate constant, k, using any method of your choice.
Answers
The reaction order and specific reaction rate constant can be determined by performing the kinetics experiment on irreversible polymerization A. Kinetic experiments can be used to investigate the rate and mechanism of chemical reactions. Chemical kinetics is the study of chemical reactions' speed and pathway.
The term "kinetics" refers to the study of reaction rates, which are determined by measuring the concentration of reactants and products as a function of time.Kinetics experiments can be used to determine the reaction rate and order of reaction. A chemical reaction's rate is defined as the change in the concentration of a reactant or product per unit time. The order of a reaction refers to the number of molecules that must react to produce a product. The order of reaction can be determined by measuring the initial rate of the reaction as a function of concentration.Methods for determining the reaction rate order include the initial rate method, the half-life method, and the integrated rate method. The initial rate method determines the reaction order by measuring the initial rate of the reaction at different reactant concentrations. The half-life method determines the reaction order by measuring the time it takes for the reactant concentration to decrease by half.The integrated rate method determines the reaction order by measuring the concentration of the reactant or product at different times.The specific rate constant can be determined by using the Arrhenius equation, which relates the rate constant to the activation energy, temperature, and frequency factor. The frequency factor can be determined by measuring the rate constant at different temperatures.For such more question on polymerization
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Select the correct answer.
Which of the following does the Sun orbit?
A.
The center of the Milky Way
B.
The Earth
C.
The Moon
D.
The stars
Answers
Explanation: It's located about two-thirds of the way out from the center of the Milky Way which is about 28,000 light–years away.
Place the following in order of increasing entropy at 298 K.
Ne Xe He Ar Kr
A) He < Kr < Ne < Ar < Xe.
B) Xe < Kr < Ar < Ne < He.
C) Ar < He < Ar < Ne < Kr.
D) Ar < Ne < Xe < Kr < He.
E) He < Ne < Ar < Kr < Xe.
Answers
Answer:
E
Explanation:
The simple rule of thumb is that as the atomic or molar mass of an atom increases, the entropy increases. This means that more the mass more will be entropy.
The atomic mass of various elements is as follows
Ne = 20 g/mol
Xe = 131 g/mol
He = 4 g/mol
Ar = 40 g/mol
Kr = 84 g/mol
Therefore, the order of increasing entropy must be
He<Ne<Ar<Kr<Xe.
Hence, option E is the correct answer.
2. What happens to the pH when you add more H+ ions to a solution that has no buffers?
Answers
Which of the following is/are correct about molar mass?
A. Can be calculated using the elements’ atomic mass in the periodic table
B. It is the mass in grams of one mole of any pure substance
C. Has the unit of mol/g
D. A and B
Answers
The elements atomic mass is the same thing as molar mass. The mass is always in grams per mole.
A graduated cylinder contains 50.0 ml of water. A 23.5 g piece of unknown metal is carefully dropped into the cylinder. When
the metal is completely covered with water, the water rises to the 53.4 ml mark. What is the density of the unknown piece of
metal in g/ml?
Answers
To find the density of the unknown piece of metal, we can use the formula:
Density = mass / volume.
How to find the density ?The volume of the metal can be calculated by deducting the starting water volume (50.0 ml) from the final water volume (53.4 ml) after the metal is introduced. We know the mass of the unknown metal is 23.5 g.Volume of metal = 53.4 ml - 50.0 ml = 3.4 ml.Now we can substitute the values into the density formula: Density = 23.5 g / 3.4 ml = 6.9 g/ml.Therefore, the density of the unknown piece of metal is 6.9 g/ml.To know more about density , check out :
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___ The energy of moving particles.
a. Chemical Energy
b. Radiant Energy
c. Mechanical Energy
Answers
C(s) + O2(g) → CO2(g) ΔHº = -94.6 kJ
H2(g) + \scriptsize \frac{1}{2}O2(g) → H2O(l) ΔHº = -286.0 kJ
2C2H2(g) + 5O2(g) → 4CO2(g) + 2H2O (l) ΔHº = -2598.8 kJ
calculate the value of ΔHº for the final reaction:
2C(s) + H2(g) → C2H2(g) ΔHº = kJ
Answers
The value of enthalpy(ΔHº) for the final reaction (2C(s) + H₂(g) → C₂H₂(g) ) is -1932.8KJ.
Enthalpy change: what is it?A system's enthalpy is its heat capacity. A reaction's enthalpy change is roughly equivalent to how much energy is lost or gained throughout the reaction. If the enthalpy of the system decreases over the reaction, the reaction is preferred.
C(s) + O₂(g) → CO₂(g) ΔHº = -94.6 kJ --- (1)
H₂(g) + O₂(g) → H₂O(l) ΔHº = -286.0 kJ ---(2)
2C₂H₂(g) + 5O₂(g) → 4CO₂(g) + 2H₂O (l) ΔHº = -2598.8 kJ ---(3)
The value of ΔHº for the final reaction,
2C(s) + H₂(g) → C₂H₂(g)
ΔH₄° = 2× ΔH₂º + ΔH₃º - ΔH₁º
ΔH₄° = 2× -286.0 + ( -2598.8) - (- 94.6)
ΔH₄° = 2× -286.0 -2598.8 + 94.6
ΔH₄° = 666 - 2598.8
ΔH₄° = -1932.8KJ.
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What is bonding all about in chemistry?
Answers
Answer:
It is like about a attraction between atoms, molecules, and more.
7. What is the volume of the
composite
solid?
4 in.
3 in.
3 in.
Answers
Answer:
The volume of Component 1 is 36 cubic inches.
Explanation:
To calculate the volume of a composite solid, we need to determine the individual volumes of the different components and then add them together.
In this case, the composite solid consists of multiple components with the following dimensions:
Component 1:
Length: 4 inches
Width: 3 inches
Height: 3 inches
To find the volume of Component 1, we multiply the length, width, and height together:
Volume of Component 1 = Length x Width x Height = 4 in x 3 in x 3 in = 36 cubic inches
Therefore, the volume of Component 1 is 36 cubic inches.
Please provide the dimensions of the remaining components of the composite solid, and I will calculate the total volume by summing up the individual volumes.
oxidation number of Ag in Ag2O
Answers
The oxidation number of Ag in Ag2O is +1.
In Ag2O, there are two silver atoms (Ag) and one oxygen atom (O). Oxygen is known to have an oxidation number of -2 in most compounds. Since the compound is neutral, the sum of the oxidation numbers of all the atoms must equal zero.
Therefore, the oxidation numbers of the two silver atoms must add up to +2 to balance out the -2 oxidation number of the oxygen atom. Since there are two silver atoms, each silver atom must have an oxidation number of +1 to yield a total oxidation number of +2 for the compound.
In Ag2O, the silver atoms lose one electron each to form Ag+ ions. This results in an oxidation number of +1 for each silver atom. The oxygen atom gains two electrons from the silver atoms to achieve a stable octet configuration, resulting in an oxidation number of -2 for the oxygen atom. The compound Ag2O is formed through the transfer of electrons, with each silver atom exhibiting an oxidation number of +1.
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Which compound has the lowest melting point?
CuO
C6H12O6
K2Cr2O7
BaCl2
Answers
hope this helps!
All living things are made of organic compounds which contain the element
A)
carbon.
B)
hydrogen.
C)
oxygen.
D)
phosphorus.
Answers
explanation; ( i’m smart )
Calculate what would be the minimum amount of energy (in joules) necessary to remove a ground-state electron (n = 1) completely from a single hydrogen atom. This process is also known as ionization. To answer this question, think about what value n must be in order to completely separate the electron from the hydrogen atom.
Answers
Answer:
E = 2.1 * 10^-18 Joules
Note: To completely remove an electron from the Hydrogen atom, n approaches infinity.
Explanation:
Check the attachment below
Here are the other two options
Answers
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Pls help me I’m having a hard day pls answer these?
Answers
Answer:the first one is D second one is A and the third one is A :D
Explanation:
if __ layers are not __, they must have been __ somewhow.
Answers
Two layers must have been separated in some way if they are not attached.
How many secret layers are there in total?The two networks are single layer perceptron networks, in other words. A line is produced by each perceptron. We may infer from the fact that only two lines are needed to represent the decision border that there will be two hidden neurons in the first hidden layer. We have one hidden layer and two hidden neurons up until this moment.
How are layers concealed?These are "hidden" since the training dataset's nodes' actual values aren't known. Indeed, all we know is the input and output. There is at least one hidden layer in every neural network. It is not a neural network if it is not.
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Which atom would be expected to have a half-filled 6s subshell
Answers
Answer: I think the answer is Cesium (Cs)
Explanation:
A half-filled 6s subshell would be 6s^1
An error during which cellular process would create a gene mutation?
Answers
An error during DNA replication would create a gene mutation.
During DNA replication, the genetic information in a cell is copied to make new DNA molecules. However, mistakes can occur during this process, leading to changes in the DNA sequence, which can result in a mutation. Mutations can also be caused by exposure to environmental factors, such as radiation or chemicals, which can damage the DNA molecule directly or affect the cellular processes involved in DNA replication.
Mutations can have a variety of effects on the organism, ranging from no effect to causing serious health problems or even death. Gene mutations can also be inherited from a parent, which can result in genetic disorders or predisposition to certain diseases. Therefore, it is important to understand the mechanisms of gene mutations and their potential impacts on organisms.
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which 2 criteria are the most important of engineers to consider when developing a procsses to produce
Answers
Two key criteria that engineers must prioritize are efficiency and safety. By emphasizing efficiency and safety during process development, engineers can create robust and reliable processes that not only maximize productivity but also prioritize the well-being of personnel and the environment.
When developing a process, engineers need to consider several important criteria. Two key criteria that engineers must prioritize are efficiency and safety.
Efficiency is crucial in process development to ensure optimal use of resources, time, and energy. Engineers strive to design processes that maximize productivity, minimize waste, and reduce costs. This involves optimizing reaction conditions, streamlining workflow, and implementing automation where possible. Efficiency considerations also extend to energy consumption, raw material utilization, and overall process sustainability.
Safety is another critical aspect that engineers must prioritize. They need to identify and mitigate potential hazards associated with the process, ensuring the safety of both personnel and the environment. This involves conducting thorough risk assessments, implementing safety protocols, and designing equipment and systems with safety features. Engineers must also consider the safe handling and storage of materials, as well as potential risks during transportation and disposal.
By emphasizing efficiency and safety during process development, engineers can create robust and reliable processes that not only maximize productivity but also prioritize the well-being of personnel and the environment.
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