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skad [1K]
3 years ago
7

Adjustment to environmental conditions is known as

Chemistry
2 answers:
alukav5142 [94]3 years ago
8 0

Answer:

A.

Explanation:

Adjust = Adapt if that makes sense.

makkiz [27]3 years ago
5 0
It’s A Let me know if you want an explanation!
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Calculate the mass in grams of 1.72×10^24 molecules of formaldehyde. The chemical formula for formaldehyde is CH2O.
pishuonlain [190]

Answer: m= 85.8 g CH2O

Explanation: First step is convert the molecules of CH2O to moles using the Avogadro's Number.

1.72x10²⁴ molecules CH2O x 1 mole CH2O / 6.022x10²³ molecules CH2O

= 2.86 moles CH2O

Next is convert the moles of CH2O to mass using the molar mass of CH2O

2.86 moles CH2O x 30 g CH2O / 1 mole CH2O

= 85.8 g CH2O

5 0
3 years ago
The solubility of two slightly soluble salts of M^2+ , MA and MZ_2, are the same, 4 x 10^â4 mol/L.
LekaFEV [45]

Answer:

a) MZ₂

b) They have the same concentration

c) 4x10⁻⁴ mol/L

Explanation:

a) The solubility (S) is the concentration of the salt that will be dissociated and form the ions in the solution, the solubility product constant (Kps) is the multiplication of the concentration of the ions elevated at their coefficients. The concentration of the ions depends on the stoichiometry and will be equivalent to S.

The salts solubilization reactions and their Kps values are:

MA(s) ⇄ M⁺²(aq) + A⁻²(aq) Kps = S*S = S²

MZ₂(aq) ⇄ M⁺²(aq) + 2Z⁻(aq) Kps = S*S² = S³

Thus, the Kps of MZ₂ has a larger value.

b) A saturated solution is a solution that has the maximum amount of salt dissolved, so, the concentration dissolved is solubility. As we can notice from the reactions, the concentration of M⁺² is the same for both salts.

c) The equilibrium will be not modified because the salts have the same solubility. So, let's suppose that the volume of each one is 1 L, so the number of moles of the cation in each one is 4x10⁻⁴ mol. The total number of moles is 8x10⁻⁴ mol, and the concentration is:

8x10⁻⁴ mol/2 L = 4x10⁻⁴ mol/L.

7 0
3 years ago
In which pair is each substance a mixture?
qaws [65]

Answer:

Air & Water

Explanation:

Air and water is the common mixtures in the book of the book called "Science & Land"

6 0
2 years ago
3. The formula for table salt is NaCl. Is table salt ionic or covalent? Explain
d1i1m1o1n [39]

Answer:

it's an ionic compound

7 0
3 years ago
What is a chemical substance that cannot be broken down into another chemical substance?
Dimas [21]

Molecule is a chemical substance that cannot be broken down into another chemical substance.

4 0
3 years ago
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