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Andre45 [30]
3 years ago
10

Explain why the freezing of water into ice causes the cracks to widen

Chemistry
1 answer:
horrorfan [7]3 years ago
4 0

Answer:

The freezing of water into ice causes the cracks to widen because it occupy more space.

Explanation:

When the water change its state of liquid to solid state due to decrease in temperature, it contracts means occupy less space but when the temperature reaches to 4 degree Celsius, it starts to expand. When the temperature goes below 0 degree Celsius, it will cause more expansion and occupy more space that causes the cracks to widen.

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Explain why gasoline is a mixture
Makovka662 [10]

Explanation:

Gasoline has many different types of hydrocarbons. This makes it a mixture.

3 0
3 years ago
A stock bottle of an acid reads: 56% by mass and 1.25 specific gravity. If the molar mass of the acid is 70g, find the mole per
TiliK225 [7]

Answer:

  • <u>10 mol / dm³</u>

Explanation:

Cubic decimeter is the same unit as liter; so, mole per cubic decimeter is mole per liter, and that is the unit of concentration of molarity. Thus, what is asked is the molarity of the solution. This is how you find it.

1. <u>Take a basis</u>: 1 dm³ = 1 liter = 1,000 ml

2. <u>Calculate the mass of 1 lite</u>r (1,000 ml) of solution:

  • density = mass / volume ⇒ mass = density × volume

Here, the density is given through the specific gravity

Scpecific gravity = density of acid / density of water

Take density of water as 1.00 g/ml.

  • density of solution = 1.25 g/ml

  • mass solution = 1.25 g/ml × 1,000 ml = 1,250 g

3. <u>Calculate the mass of solute</u> (pure acid)

  • % m/m = (mass of solute / mass of solution) × 100

  • 56 = mass of solute / 1,250 g × 100

  • mass of solute = 56 × 1,250g / 100 = 700 g

4. <u>Calculate the number of moles of solute</u>:

  • moles = mass in grams / molar mass = 700 g / 70 g/mol = 10 mol

5. <u>Calculate molarity (mol / dm³)</u>

  • M = number of moles of solute / liter of solution = 10 mol / 1 liter = 10 mol/liter.
5 0
3 years ago
CHEMISTRY!! 50 POINTS!
Anuta_ua [19.1K]

Answer:

The answer to this question is 33.8

6 0
2 years ago
Assume the average apple has a mass of 167 grams. How many apples are in a bag of apples that weighs 2000 grams? Enter your numb
forsale [732]

Answer:

12

Explanation:

167x=2000

x=11.976

rounds to 12

4 0
2 years ago
5. an atom that has lost or gained an electron and has become charged
densk [106]

Answer:

It would be compound.

Explanation:

It is this way because if it adds another proton it becomes more positive that nuetral, and if you add an electron it just makes the atom more dense. That is why the answer is compound. Hope this helped :)

5 0
3 years ago
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