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Tanzania [10]
3 years ago
5

The living things in an area interacting with their physical environment make up an ?

Chemistry
1 answer:
Ksivusya [100]3 years ago
7 0
Biological environment
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One of the human body's adaptation is to sweat when it gets too hot. Sweat glands in the glands in the skin produce a solution o
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The answer is D. Evaporated
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What occurs during a chemical reaction?
Fed [463]

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Chemical reactions involve breaking chemical bonds between reactant molecules

Explanation:

In a chemical reaction, the atoms and molecules that interact with each other are called reactants. ... No new atoms are created, and no atoms are destroyed. In a chemical reaction, reactants contact each other, bonds between atoms in the reactants are broken, and atoms rearrange and form new bonds to make the products

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A sample has a hydrogen ion concentration of 1 ⋅ 10^−2. What happens if the hydrogen ion concentration increases?
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If the concentration of the hydrogen ions, increase then the solution would become more and more acidic and thus have a lower pH value than compared to the pH value before at the 1.0 X 10^-2 M.
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3 years ago
What is the molarity of a solution made by diluting 0.025L of 6.0 M HCl until
Nadusha1986 [10]

Answer:

Explanation:

Use the dilution equation: M1V1 = M2V2

M1 = 6.0 M

V1 = 0.025 L

M2 = ?

V2 = 1.75 L

(6.0 M)(0.025 L) = M2(1.75 L)

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3 0
3 years ago
Using the data below, calculate the enthalpy for the combustion of C to CO
Leona [35]

Answer:

ΔH3 = -110.5 kJ.

Explanation:

Hello!

In this case, by using the Hess Law, we can manipulate the given equation to obtain the combustion of C to CO as shown below:

C(s) + 1/2O2(g) --> CO(g)

Thus, by letting the first reaction to be unchanged:

C(s) + O2(g)--> CO2 (g) ; ΔH1 = -393.5 kJ

And the second one inverted:

CO2(g) --> CO(g) + 1/2O2(g) ; ΔH2= 283.0kJ

If we add them, we obtain:

C(s) + O2(g) + CO2(g) --> CO(g) + CO2 (g) + 1/2O2(g)

Whereas CO2 can be cancelled out and O2 subtracted:

C(s) + 1/2O2(g)  --> CO(g)

Therefore, the required enthalpy of reaction is:

ΔH3 = -393.5 kJ + 283.0kJ

ΔH3 = -110.5 kJ

Best regards!

6 0
3 years ago
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