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Irina18 [472]
3 years ago
13

A balloon holds a certain volume of air. In what three ways can the volume of the balloon be increased?

Chemistry
1 answer:
Anastaziya [24]3 years ago
3 0

Answer:

Relating Pressure, Amount, and Temperature

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Measurements include
Keith_Richards [23]
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8 0
3 years ago
A 3.140 molal solution of NaCl is prepared. How many grams of NaCl are present in a sample containing 2.314 kg of water?
Mariulka [41]

Answer:

g NaCl = 424.623 g

Explanation:

<em>C</em> NaCl = 3.140 m = 3.140 mol NaCl / Kg solvent

∴ solvent: H2O

∴ mass H2O = 2.314 Kg

mol NaCl:

⇒ mol NaCl = (3.140 mol NaCl/Kg H2O)×(2.314 Kg H2O) = 7.266 mol NaCl

∴ mm NaCl = 58.44 g/mol

⇒ g NaCl = (7.266 mol NaCl)×(58.44 g/mol) = 424.623 g NaCl

5 0
3 years ago
The rock was white and black speckled with a density of 2.6 g/mL. Physical or chemical property?
stepladder [879]

Answer:

Chemical

Explanation:

7 0
3 years ago
Question 4 Solve and report to correct number of significant figure 2.375 + 4.5​
DiKsa [7]

Answer:

6.9 (two sig figs)

Explanation:

2.375 + 4.5 = 6.875 = 6.9

When adding or subtracting, sig figs are determined by the least number of digits past the decimal point.

8 0
3 years ago
When a person looks at a bright light, tiny muscles in the eye contract so less light can enter the eye.
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Answer:

involuntary, attached to the eyeball, nonstriated.

Explanation:

6 0
2 years ago
Read 2 more answers
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