Was the solubility of kno3 affected by the higher water temperature in the same way the solubility of nh4cl was? explain.

The amount of energy, in Joules, that the food contains will be 414.8 Joules

According to metrics, 1 kilocalorie = 4184 Joules.

100 Calories = 100/1000 = 0.1 kiloCalories.

0.1 kilocalories = 0.1 x 4184 = 414.8 Joules

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Answer:

Explanation:

Applying Boyle's Law :

Q1

Q2

As long as the temperature and other conditions are kept constant, the rate constant will remain constant for that reaction.

Part A: Why should experimentally determined values of the rate constant, k, for each trial be fairly similar, even though the concentrations of the reactants are changed in each trial,

The experimentally determined values of the rate constant k for each trial should be fairly similar even though the concentrations of the reactants are changed in each trial because the rate constant is a measure of the intrinsic reactivity of the reaction itself, and is independent of the initial concentrations of the reactants.

As long as the temperature and other conditions are kept constant, the rate constant will remain constant for that reaction.

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a. Entropy, S = S(U, L, N) for the one-dimensional gas is given by the Sackur-Tetrode equation which is given by:

b. The equation of state, P= P(T, L, N) for the one-dimensional gas is given by the equation of state for an ideal gas which is given by:

Gas is one of the four basic states of matter. Pure gases can be made up of atoms, elemental molecules made up of one type of atom, or compound molecules made up of many kinds of atoms. A mixture of gases will contain as many pure gases as air. Each gas has the same volume at the same temperature and pressure according to Avogadro's law. The volume of 1 mole of gas is 22.4 liters at standard conditions. Here are examples of gaseous objects around you. Air. Smoke. Nitrogen.

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The correct answer is Glycolysis, Citric Acid Cycle, and Fatty Acid B-Oxidation.

The pathways that generate reduced cofactors (NADH or FADH2) for the Electron Transport Chain (ETC) to use are glycolysis, the citric acid cycle, and fatty acid β-oxidation. During glycolysis, glucose is broken down into pyruvate, generating two molecules of NADH. In the citric acid cycle, acetyl-CoA is oxidized to CO2, generating three molecules of NADH and one molecule of FADH2 per cycle.

Finally, during fatty acid β-oxidation, fatty acids are broken down into acetyl-CoA, generating multiple molecules of NADH and FADH2. These reduced cofactors are then used by the ETC to generate ATP through oxidative phosphorylation. Therefore, options 1, 4, and 5 are correct answers.

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Answer: FALSE

Explanation:

84.2 ml of 0.120 m HCL are needed to completely neutralize 50.0 ml of 0.101 m Ba(OH)2 solution.

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Answer:

11

Explanation:

mass no.= No. of protons+ no.of neutrons

= 5+6

=11

The label signal word that indicates a pesticide is least hazardous to humans is "Caution."

Pesticides are labeled with signal words to indicate the level of potential harm they pose to humans and the environment. The four signal words in decreasing order of hazard are Danger, Warning, Caution, and No signal word. The signal word "Caution" indicates that the pesticide is relatively low in toxicity and poses a minimal risk of harmful effects to humans.

However, it is important to note that even pesticides labeled with "Caution" should be used with care and according to the label instructions to prevent any unintended exposure or harm.

It is also essential to follow all safety precautions when using any pesticide and to store and dispose of it properly to avoid any negative effects on humans, animals, and the environment.

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The amount of CO that would be required to generate 635 g of CO₂ will be 404.14 g.

To balance the amount of each element on the reactant and product sides of the equation, the stoichiometric coefficient is the number placed in front of the atoms, ions, and molecules in a chemical process.

Usually, it is positive for products and negative for reactants. Stoichiometric coefficients define the stoichiometry of a chemical reaction.

First, let us get the equation of the reaction:

The reaction becomes: Fe₂O₃ + 3CO → 2Fe + 3CO₂

From the equation, we can see that the mole ratio of CO to that of CO₂

= 3:3

= 1:1

Given that,

635 g of CO₂ is to be generated.

Mole of 635 g CO₂ = mass/molar mass = 635/44.01 = 14.43 moles

Thus, the equivalent mole of CO required will also be 14.43 moles.

Mass of 14.43 moles of CO = moles x molar mass

                                             = 14.43 x 28.01

                                             = 404.14 gm.

Hence, 404.14 gm of CO will be required to produce 635 g of CO₂.

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Answer:

Explanation:

density = mass / volume

mass = 17.95 grams

volume = 17.97 - 15.50 mL = 2.45 mL = 2.45 cc

density = 17.95 /(2.45) = 7.327 grams / cc

The sign of ΔH and ΔS for the reaction, C8H18 (l) à C8H18 (g) is: 2)ΔH + ΔS +.

The reaction, C8H18 (l) to C8H18 (g), is an example of a phase change reaction where a liquid substance is converting to a gaseous state.

In general, phase change reactions are accompanied by a large change in entropy, so it is likely that ΔS will be positive for this reaction.

As for ΔH, since energy is required to convert a liquid to a gas, the reaction is endothermic and ΔH will be positive.

Based on these considerations, the correct answer would be:

2) ΔH + ΔS +

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Answer:

Explanation:

The percentage error of a certain measurement can be found by using the formula

\(P(\%) = \frac{error}{actual \: \: number} \times 100\% \\\)

actual mass = 24.3

error = 24.3 - 14.7 = 9.6

We have

\(p(\%) = \frac{9.6}{24.3} \times 100 \\ = 39.506172839...\)

We have the final answer as

Hope this helps you

Answer:

MgCl2 - 6H2O

203.3 mol

MgCl2 + 2Na = 2NaCl + Mg

22.6g

Explanation:

1. Write the formula of hydrate and find molar mass.

2. Write a balanced single replacement (don't include H2O)

3. Do the given/wanted calculation (include H2O in molar mass of given)

Direct contact between objects causes conduction or heat transfer. The heat is transferred inside the fluid during convection. Heat transfer in radiation happens by electromagnetic waves without the use of particles.

First, ascertain whether the two things are in contact. If they are, conduction is how heat is transferred between them. Determine whether there is a fluid medium, such as a liquid or gas, connecting the items if they are not in contact.

Evidence of heat transport is apparent. Convection is the phenomenon that causes the air to shimmer over radiators. Conduction is the phenomenon that causes you to feel warm when you place your hand on a spoon that has been sitting in a hot bowl of soup (radiation).

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Answer:

Chemical formula

Explanation:

because chemical formulas use chemical elements , symbols , and numbers to present information about the chemical proportions.

Answer:

Chemical potential energy is a form of potential energy related to the structural arrangement of atoms or molecules. This arrangement may be the result of chemical bonds within a molecule or otherwise. Chemical energy of a chemical substance can be transformed to other forms of energy by a chemical reaction.

The chemical energy and nuclear energy can be considered potential energy because both of them has energy stored in it.

Potential energy is any form of energy that has stored potential that can be put to future use such as nuclear energy, chemical energy in which the energy is stored in it so we can conclude that chemical energy and nuclear energy can be considered potential energy due to its storage of energy.

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Answer:

It is considered life, but that doesn’t have to do much with abortion.

We kill things all the time. Unless you are vegetarian, lots of animals are killed to give you meat. Even if you are, you’ll probably swat a mosquito that’s trying to bite you. And what about the bacteria inside your body that are constantly killed to keep you healthy?

The question is how much this life is worth. This becomes more a question of ethics, but I think we can all agree a human life is worth a lot. So killing humans is wrong. What about somewhat intelligent animals? Well, killing them just for the fun of it or because you can is wrong as well I think.Most people think that’s okay, although some people will disagree and become vegetarians.

Insect life is worth less, and killing an insect is seen by most people as okay as long as you have even a small reason for it (like being irritated by a buzzing fly).

And all the way on the bottom are bacteria. They are not conscious, even though alive.

Sorry about the first answer. I didn't look at the question carefully since I wasn't wearing my glasses.

If this doesn't help than I'm sorry.

A-) A hypothesis is a tentative explanation, while a theory is a well-supported and comprehensive explanation.

(b) A scientific law describes a concise pattern, while a theory provides a comprehensive explanation for a wide range of phenomena.

A- ) A hypothesis and a theory differ in their level of supporting evidence and scope. A hypothesis is a proposed explanation for a phenomenon that is based on limited evidence and serves as a starting point for further investigation. A theory, on the other hand, is a well-substantiated and comprehensive explanation that has been repeatedly tested and supported by a substantial body of evidence.

(b) A theory and a scientific law differ in their nature and scope. A scientific law describes a concise mathematical or descriptive relationship that consistently holds true under specific conditions. It summarizes observable patterns in nature. In contrast, a theory provides a comprehensive explanation for a broad range of phenomena and incorporates multiple hypotheses, observations, and experimental data. Theories are based on well-established principles and have undergone rigorous testing and peer review, whereas scientific laws are more limited in scope and typically focus on specific mathematical relationships or patterns.

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The four complementary characteristics of colligative properties that a solution can display are an increase in boiling point, a decrease in freezing point, a relative decrease in vapor pressure, and an increase in osmotic pressure.

What are colligative properties?

Some characteristics of diluted solutions containing non-volatile solutes depend only on the quantity of solute particles present and not on the solute type. Collaborative qualities are what these traits are known as. Most frequently, diluted solutions exhibit these characteristics.

Collaborative properties can also be defined as those that result from the dissolution of a non-volatile solute in a volatile solvent. Typically, the solute alters the characteristics of the solvent by removing some of the solvent molecules from the liquid phase. Additionally, the concentration of the solvent is reduced as a result of this.

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Option B is correct

Given that,

The initial temperature of water,

T1 = 70 C

The final temperature of the water, T2 = 111.4 C

The value of magnetic field intensity H = 45.81 C Oe

The entropy change can be calculated using the formula:

ΔS = ∫ (dQ / T)

For phase change of liquid to gas, the formula for entropy change is,

ΔS = mL / Twhere,m = mass of water

L = latent heat of vaporization of water = 40.67 kJ/kg (at 111.4 C)T = the boiling point of water = 100

Thus, Entropy change, ΔS = mL / T= 1 kg × 40.67 kJ/kg= 40.67 kJ/K

Hence, the amount of entropy change is 40.67 kJ/K which is close to option C, 16.2 kJ/K.

However, since the unit of the answer should be J/K instead of kJ/K, the answer in Joules will be:40.67 kJ/K × 1000 J/1 kJ = 40670 J/K

Now, the option that represents the amount of entropy change is 74 J/K. As we know that the value of ΔS is 40670 J/K.

Therefore, the option B represents the entropy change.

Hence, option B is correct.

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Explanation:

E maybe i am not sure or C

Among the following, the characteristic of halogen is D) Powerful oxidizing agents

A characteristic of halogens is that they are powerful oxidizing agents. This means that they have a strong ability to gain electrons from other substances, making them highly reactive.

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