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Answer:

one quarter of the original amount, so 0.25 g

Explanation:

Answer:

C

Explanation:

Answer:

the number of protons determines the atomic number

Explanation:

Ex. Aluminum has 13 protons, so it's atomic number is 13

hope this helps :)

Answer: The molarity of final solution is 0.244 M.

Explanation:

Given: [tex]M_{1}[/tex] = 1.00 M,       [tex]V_{1}[/tex] = 0.305 L

[tex]M_{2}[/tex] = ?,                [tex]V_{2}[/tex] = 1.25 L

Formula used to calculate the molarity f resulting solution is as follows.

[tex]M_{1}V_{1} = M_{2}V_{2}[/tex]

Substitute the values into above formula as follows.

[tex]M_{1}V_{1} = M_{2}V_{2}\\1.00 M \times 0.305 L = M_{2} \times 1.25 L\\M_{2} = \frac{1.00 M \times 0.305 L}{1.25 L}\\= 0.244 M[/tex]

Thus, we can conclude that the molarity of final solution is 0.244 M.

Answer:

bR2 since it is nonpolar

Answer:

The molecular mass of carbon dioxide is 44.01amu

Answer:

B) -1.00 M/min

Explanation:

Based on the reaction:

2 SO2(g) + O2(g) → 2SO3(g)

2 moles of SO2 are consumed per mole of O2 producing 2 moles SO3

In the problem, the sulfur dioxide has a rate of change of -2.00M/min. As the moles of oxygen that reacted are half the moles of SO2, its rate of change is halved, that is:

Answer:

9.00 g H2O

Explanation:

Convert molecules to grams using stoichiometry

(3.01 * 10^23 molecules) * (1 mole H2O / 6.022 * 10^23 molecules) * (18.01 g / 1 mole H2O) = 9.00 g H2O

Answer:

answer  in picture

Explanation:

Answer:

567 calories.

Explanation:

There 567 calories in 100 grams of peanut. In 100 grams of peanut, 49 gram is the fat, 26 grams of protein, 16 grams of carbohydrates, Sodium is 18 mg, Potassium is 705 mg. Calcium is present in peanut about 9%, Iron is 25% , Vitamin B-6 is 15%  and Magnesium is 42% of their total weight. Oil content is high in the Peanut so this is the reason for high calories in peanut. It is a good source of proteins and potassium.

Answer:

The role of consumers in an ecosystem is to obtain energy by feeding on other organisms and sometimes transfer energy to other consumers. Changes that affect consumers can impact other organisms within the ecosystem.

Explanation:

Hope this helped Mark BRAINLIEST!!!!

Consumers are organisms that obtain energy by eating other organisms. Consumers may consume either producers or other consumers. Consumers include animals.

A food chain is a network of links in a food web that begins with producer organisms and ends with an apex predator, detritivore, or decomposer species.

A food chain also demonstrates how organisms are related to one another through the food they consume. Each trophic level is represented by a different level of a food chain.

Producers can produce their own food and energy, but consumers are not the same. Consumers are living things that must hunt, gather, and eat their food.

Thus, Consumers must eat in order to gain energy, or they will perish. Omnivores, carnivores, herbivores, and decomposers are the four types of consumers.

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Answer:

K = [HI]² / [H₂] [I₂]

Explanation:

To write the expression of equilibrium constant, K, it is important that we know how to obtain the equilibrium constant.

The equilibrium constant, K for a given reaction is simply defined as the ratio of the concentration of the products raised to their coefficient to the concentration of the reactants raised to their coefficient. Thus, the equilibrium constant is written as follow:

K = [Product] / [Reactant]

Now, we shall determine the equilibrium constant for the reaction given in the question above. This can be obtained as illustrated below:

H₂(g) + I₂(g) —> 2HI (g)

K = [HI]² / [H₂] [I₂]

2. Coal

It is non renewable energy source.

Answer: the answer would be coal

Explanation: hoped this helped!

Explanation:

when Magnesium is reacted with Aluminum oxide, Aluminum being a less reactive metal than magnesium, is replaced by magnesium

Al2O3 + 3Mg - 3MgO + 2Al

hence reaction takes place

Answer:

a

Explanation:

the ones are stronger and herder to break so it will take more energy to break them then when they are made

The statement, that describes the reaction and correctly compares the energy in bonds from the given ΔH values is "It's endothermic because the energy required to break bonds in the reactants is less than the energy released when the products are formed."

The quantity of energy evolved during a chemical reaction is represented by ΔH, also known as enthalpy change.

An exothermic reaction is a chemical reaction in which heat energy is emitted. The value of ΔH is always negative in exothermic processes. An endothermic reaction is a chemical reaction that absorbs heat energy. The value ΔH of is always positive for endothermic reactions.

When the bonds in the reactants are broken, more energy is absorbed than is released when new bonds are created in the products, therefore the value of ΔH is always positive in endothermic reactions.

Hence the correct option is endothermic because the energy required to break bonds in the reactants is less than the energy released when the products are formed.

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Answer:Base A is the weakest conductor electricity

Explanation:

Dissociation is a factor that affects electrical conductivity. The greater the percentage of dissociation for bases the stronger the conductivity of electricity.

Given that

Base A dissociates 25% in water

Base B dissociates 50%.

Base C dissociates 75%

We can conclude that  Base A is the weakest conductor oelectricity since it has the lowest percentage of dissociation.

Answer:

CaC2 + 2H20 ⇋Ca(OH)2 + C2H2

Explanation:

CaC2 + A H20 ---> Ca(OH)2 + A C2H2

This is calcium carbide reacting with water to produce calcium hydroxide and ethyne commonly called acetylene.

Let's now balance the equation.

CaC2 + 2H20 ⇋Ca(OH)2 + C2H2

Answer:

c)

Explanation:

add water to the acid to decrease its molarity

Answer:

protists

animals

fungi

plants

Explanation:

i took the test let me know if im wrong tho

The biotic factors from the following options are protist, animals, fungi, and plants. Options A, B, c, and D are correct.

Biotic factors are those factors which can grow, and reproduce themselves.

Plants, animals, protists, and fungi are biotic factors that live, eat ad reproduce.

Salinity is the quality of any solution. It is not a biotic factor.

Thus, the correct options are A, B, c, and D.

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Answer:

0.076 atm

Explanation:

Using the combined gas law formula;

P1V1/T1 = P2V2/T2

Where;

P1 = initial pressure (atm)

P2 = final pressure (atm)

T1 = initial temperature (K)

T2 = final temperature (K)

V1 = initial volume (L)

V2 = final volume (L)

According to the information provided in this question;

P2 = ?

P1 = 0.250 atm

V2 = 496 L

V1 = 300 L

T2 = 200K

T1 = 400K

Using P1V1/T1 = P2V2/T2

0.250 × 300/400 = P2 × 496/200

75/400 = 496 P2/200

0.1875 = 2.48P2

P2 = 0.1875 ÷ 2.48

P2 = 0.076 atm

Answer:

Yes but will take a very very long time for them to adapt most will die but as gemeration passes they will get used to it

Answer:

well to me it is called natural energy

Answer:

Which of the following best explains the relationship between peak-to-peak amplitude and semi-amplitude? Semi-amplitude is half the distance of the peak-to-peak amplitude. Semi-amplitude is the same distance as the peak-to-peak amplitude.

C. 0.5

This is the answer.

(assuming that the D option is 1, if it is 0.1 then the answer is 0.1)

[tex]0.5[/tex]

Explanation:

As you know that decreasing in the concentration of OH- (i.e., 14, 13, 12, 11,..) makes to increase in the concentration of H+ ions (5,4,3,2,1).

Answer:

you would expect 0 radioactive nuclei to be present

Explanation:

got it right on the assignment

Answer:

A. weak acid and its conjugate base

Explanation:

A buffer solution can be made with a weak acid and conjugate base or a weak base and conjugate acid.

This may help you:

https://chem.libretexts.org/Bookshelves/Physical_and_Theoretical_Chemistry_Textbook_Maps/Supplemental_Modules_(Physical_and_Theoretical_Chemistry)/Acids_and_Bases/Buffers/Introduction_to_Buffers

Answer:

Have a nucleus

Explanation:

Pls check..

Answer:

72.58 g/mol

Explanation:

mark me brainless if I am ✅

The relationship between the rate of diffusion and the molar mass is given by Graham's law.  A gas diffusing 1/6 times faster than hydrogen will have a molar mass of 72.58 g/mol. Thus, option d is correct.

Graham's law states the inverse relationship between the rate of diffusion and the square root of the molar mass of the gas. It is given as,

Rate = 1 ÷ √M

The molar mass of the gas that diffuses 1/6 times faster than hydrogen is calculated as,

R₁ ÷ R₂ = √ (M₂ ÷ M₁)

Here,

The molar mass of hydrogen = M₁

The molar mass of unknown gas = M₂

Rate of diffusion of hydrogen gas = R₁

Rate of diffusion of unknown gas = R₂ = 1 / 6 R₁

Substituting values:

R₁ ÷ 1/6 R₁ = √M₂ ÷ 2

6 × 1.414

= 8.485

= 84.85 g/mol ≈ 72.58 g/mol

Therefore, option d. 72.58 g/mol is the molar mass of unkown gas.

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Answer:

in my opinion I think is D you don't have to choose it

Answer:

Taking the animal kingdom as an example, we can see that it is split into two clear groups: Invertebrates - animals without a backbone. Vertebrates - animals with a backbone.

Explanation: