All categories

3 years ago

Which of the following is the best evidence for a chemical reaction?

Chemistry

1 answer:

alisha [4.7K]3 years ago

5 0

C. Formation of a new substance

You might be interested in

Why is it important for us to study outer space?

AleksAgata [21]

Answer:

So you know the things about outer space like facts that you might not know

8 0

2 years ago

14. Would you expect each of the following atoms to gain or lose electrons when forming ions ? what ion is the most likely in ea

yanalaym [24]

Answer:

The answer to your question is below

Explanation:

Metals lose electrons and Nonmetals gain them.

a. Ra is in group IIA it will lose electrons, the ion will be Ra⁺²

b. Br is in group VIIA it will gain electrons, the ion will be Br⁻¹

c. In is in group IIIA it will lose electrons, the ion will be In⁺³

d. Te is in group VIA it will gain electrons, the ion will be Te⁻²

e. Ca is in group IIA it will lose electrons, the ion will be Ca⁺²

f. As is in group VA it will gain electrons, the ion will be As⁻³

g. Al is in group IIlA it will lose electrons, the ion will be Al⁺³

h. Rb is in group IA it will lose electrons, the ion will be Rb⁺¹

7 0

2 years ago

The survival of aquatic organisms depends on the small amount of O2 that dissolves in H2O . The diagrams above represent possibl

koban [17]

Answer:

Diagram 1

Explanation:

The solubility of the oxygen gas in water has to do with the interaction of the oxygen with the dipoles in water.

Water is a polar molecule having oxygen as the negative dipole and hydrogen as the positive dipole.

Water can interact with the oxygen atoms in the molecule via intermolecular hydrogen bonds with molecular oxygen as shown in diagram 1.

4 0

2 years ago

Consider the balanced chemical equation for the combustion of methane (CH4).

Mrac [35]

<h3>Answer:</h3>

89.6 L of O₂

<h3>Solution:</h3>

The balanced chemical equation is as,

CH₄ + 2 O₂ → CO₂ + 2 H₂O

As at STP, one mole of any gas (Ideal gas) occupies exactly 22.4 L of Volume. Therefore, According to equation,

44 g ( 1 mol) CO₂ is produced by = 44.8 L (2 mol) of O₂

So,

88 g CO₂ will be produced by = X L of O₂

Solving for X,

X = (88 g × 44.8 L) ÷ 44 g

X = 89.6 L of O₂

5 0

3 years ago

Read 2 more answers

How strong are bonds between subatomic particles?

Aleks [24]

Answer:

they are indeed very strong

8 0

3 years ago