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3 years ago

Changing the pressure of a system has the highest effect on a substance in which phase?

Chemistry

1 answer:

katrin2010 [14]3 years ago

7 0

The answer is A- Gas.

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Which of the following is a solution?

Annette [7]

Aye bruh the anwser is c

6 0

4 years ago

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Can someone explain me why the molar mass become 90.12 g/mol and when I calculated it's 90 g/mol?

e-lub [12.9K]

Answer:

It could be because of rounding error somewhere in your calculations. Another thing to note is 90 +/- 4 g/mol.

Your calculations don't have to be spot on.

8 0

3 years ago

The density of pure diamond is 3.5 g/cm°. What is the volume of a diamond with a mass of 0.25 g?

ValentinkaMS [17]

Answer:

0.071 is the correct answer using the formula d=m/v

3 0

3 years ago

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Which ions remain in solution after pbi2 precipitation is complete? express your answers as ions separated by a comma?

olga nikolaevna [1]

Answer;

K+ and NO3- ions

Explanation;

The main ions remaining are K+ and NO3- ions after pbi2 precipitation is complete.

However; There will always be tiny amounts of Pb2+ and I- ions, but most of them are in the solid precipitate.

7 0

4 years ago

What is meant by the term chemical reaction

pantera1 [17]

Answer:

<h3> $\huge{ \underline{ \underline { \bold{ \sf{ \orange{See \: below}}}}}}$ </h3>

Explanation:

▪️ $\underline{ \bold{ \sf{ \blue{Chemical \: reaction}}}}$

⇒The composition , decomposition or displacement of molecules of matter during chemical change is called chemical reaction.

▪️ $\underline{ \bold{ \sf{ \purple{ \: Further \: more \: explanation}}}}$

Various conditions bring about these changes. The chemical reactions are represented by chemicalequation. The compounds or elements that take part in chemical reaction are called reactant. They are written at the left side of an arrow that represent a change while the compound or elements that formed after the chemical change are called product. They are written at the right side of the arrow.

▪️ $\underline{ \bold{ \sf{ \purple{For \: example}}}}$

When nitrogen reacts with hydrogen to form ammonia :

Nitrogen + Hydrogen ⇒ Ammonia

N₂ + 3H₂ ⇒ 2NH₃

Presentation of a chemical reaction in the form of equation is called chemical equation . Chemical equation may be word equations or formula equations.

Hope I helped!

Best regards!!

3 0

3 years ago