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frozen [14]
3 years ago
5

Water is placed into a sealed jar and has a mass of 22.0 grams. The jar is placed in the freezer and the water turns to ice. The

jar of ice is measured. The mass should be:
a. Slightly less than 22.0 grams
b. Exactly 22.0 grams
c. Slightly more than 22.0 grams
Chemistry
1 answer:
Serhud [2]3 years ago
6 0

exactly 22.0 grams

because freezing is a physical change not a chemicl change..so nothing is taken away or added

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Are Sharks Color Blind?
melisa1 [442]

Answer:

Sharks are color blind, which means they cannot see a lot of colors clearly, but this does not stop them from hunting their prey as they have many tricks up their sleeves. Coming up in this article, we look at what colors sharks are least attracted to, if whale sharks are blind, and if sharks are blind when they attack.

Explanation:

5 0
3 years ago
Complete combustion of 2.90g of a hydrocarbon produced 9.32g of CO2 and 3.18g of H2O. What is the empirical formula for the hydr
Olenka [21]

Answer;

= C3H5

Explanation and solution;

1 mole of CO2 contains 44 g, of which 12 g are carbon

Thus, mass of carbon in 9.32 g will be;

(12/44) × 9.32 g = 2.542 g

Mass of Hydrogen in 3.18 g of water;

= (2/18) × 3.18 g = 0.353 g

we then find the number of moles;

Moles of carbon ; 2.542 /12 = 0.2118 moles

Moles of Hydrogen = 0.353 moles

The ratios of C ; H ;

= 1 :  0.353 /0.2118

= 1 : 5/3

= 3: 5

Therefore; the empirical formula of the hydrogen carbon is; C3H5

5 0
3 years ago
Read 2 more answers
Ammonia is a weak base because it produces ___ ions in solution
ryzh [129]
Only a few ions (in comparison to others that totally break apart)
4 0
3 years ago
The molecular formula of a compound is C7H14O7. what is the empirical formula​
nata0808 [166]
Empirical formula is the simplest way the molecular formula can be wrote so here 7 goes into all of these so it would be CH2O
6 0
3 years ago
12. A large recipe calls for 250 quarts of milk. What is<br>this in cm3?​
stepan [7]

Answer:

236588 cm3

Explanation:

If a large recipe calls for 250 quarts of milk, there are 236588 cm3.

Multiply the volume value by 946.353

3 0
3 years ago
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