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kap26 [50]
3 years ago
13

Why do you fill a basketball, a football, a soccer ball, or a volleyball with a gas (air) instead of a liquid? Choose the two st

atements that apply.
A. A liquid would be too messy.
B. A liquid would make the ball too heavy.
C. Gases can be forced into a smaller volume than a liquid can.
D. A liquid would make the ball bounce too much.
E. Gases occupy less space than liquids, which makes the ball bounce.
Chemistry
2 answers:
serg [7]3 years ago
7 0

E is the answer HOPE THIS HELPS

elena-s [515]3 years ago
7 0

A. A liquid would be too messy.

B. A liquid would make the ball too heavy.

C. Gases can be forced into a smaller volume than a liquid can.

D. A liquid would make the ball bounce too much.

<u>E. Gases occupy less space than liquids, which makes the ball bounce.</u>

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2 years ago
Wine goes bad soon after opening because the ethanol ch3ch2oh in it reacts with oxygen gas o2 from the air to form water h2o and
maks197457 [2]
1) Chemical reaction

CH3 CH2 OH + O2 ---> CH3COOH + H2O

It is balanced

2) Molar ratios

1 mol CH3 CH2OH : 1 mol O2 : 1 mol CH3COOH : 1 mol H2O

3) Conversion of 7.6 grams of ethanol to moles

Molar mass of CH3CH2OH = 2 * 12g/mol + 6 * 1 g/mol + 16 g/mol = 46 g/mol

moles = mass / molar mass = 7.6 g / 46g/mol = 0.165 mol

4) Use of proportions with the molar ratios:

1mol CH3CH2OH / 1mol O2 = 0.165 mol CH3CH2OH / x => x = 0.165 mol CH3CH2OH.

5)  Conversion of 0.165 mol O2 to grams

mass in grams = number of moles * molar mass = 0.165 mol * (2 * 16g/mol)

mass = 5.28 g ≈ 5.3 g

Answer: 5.3 g
3 0
3 years ago
Read 2 more answers
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