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Darya [45]
3 years ago
15

A compound is 2.00% H by mass, 32.7% S by mass what is the empirical formula.

Chemistry
1 answer:
Vikki [24]3 years ago
3 0
What are the answer provided 

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Which of the following techniques is used to separate proteins by function?
Anon25 [30]

Ammonium sulfate precipitation is used to separate proteins by function

However, it is one of the most commonly used methods for laboratory scale protein purification and fractionation. This method is also used to separate proteins by altering their solubility.

<h3>What is separation techniques?</h3>

Separation technique is a process or method used to the components of mixtures.

There are different types of separation technique which includes sublimation, precipitation, sieving, evaporation and many more.

Learn more about separation techniques:

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8 0
2 years ago
Use the molar bond enthalpy data in the table to estimate the value of Δ∘rxn
MakcuM [25]

Answer:

ΔH°rxn = - 433.1 KJ/mol

Explanation:

  • CH4(g) + 4Cl2(g) → CCl4(g) + 4HCl(g)

⇒ ΔH°rxn = 4ΔH°HCl(g) + ΔH°CCl4(g) - 4ΔH°Cl2(g) - ΔH°CH4(g)

∴ ΔH°Cl2(g) = 0 KJ/mol.....pure element in its reference state

∴ ΔH°CCl4(g) = - 138.7 KJ/mol

∴ ΔH°HCl(g) = - 92.3 KJ/mol

∴ ΔH°CH4(g) = - 74.8 KJ/mol

⇒ ΔH°rxn = 4(- 92.3 KJ/mol) + (- 138.7 KJ/mol) - 4(0 KJ/mol) - (- 74.8 KJ/mol)

⇒  ΔH°rxn = - 369.2 KJ/mol - 138.7 KJ/mol - 0 KJ/mol + 74.8 KJ/mol

⇒ ΔH°rxn = - 433.1 KJ/mol

4 0
3 years ago
Read 2 more answers
True or false: polyvalent cations are usually transition metals​
Rasek [7]

Answer:True

Explanation:

Most of the transition metals—those metals in the center d-block of the periodic table—are polyvalent. Since they can form cations with different charges, those charges must be specified when naming the ions and when naming compounds containing those ions.

If you found my answer useful then mark me brainliest.

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Electrons travel around the nucleus
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nao sei mas

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