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madam [21]
2 years ago
10

ANSWER QUICK

Chemistry
2 answers:
Novosadov [1.4K]2 years ago
8 0

Answer:

1.8

Explanation:

geniusboy [140]2 years ago
7 0
The answer is 1.8 grams
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Enter the appropriate symbol for an isotope of calcium-42 corresponding to the isotope notation AZX.
Vikki [24]
Answer is ₂₀⁴²Ca.<span>

In AZX notation
   A<span> - Represents the </span>mass number of atom.
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<span>         It is shown at the </span>above of the left side<span> of the atom.</span>
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<span>  </span>Z - Represents the atomic number.<span>
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5 0
3 years ago
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How much energy is required to heat a frozen can of juice (360 grams- mostly water) from 0 degrees Celsius ( the temperature of
Usimov [2.4K]

Answer:

1,100,160J or 262.94 kcal

Explanation:

The juice is frozen at 0 degrees Celsius and I assume that it will become gas at 100 degrees Celsius. So we change the form of the water from solid to liquid, then to gas. That means we have to find out how much heat needed to change water form too, not only the heat needed to increase its temperature.

The latent heat of water is 4.2J/g °C while the heat of fusion is 334 J/g and the heat of vaporization is 2260 J/g. The energy needed will be:

360g * 4.2J/g °C * (110-0°C ) + 360g * 334 J/g + 360g * 2260 /g = 1,100,160J or 262.94 kcal.

8 0
3 years ago
How many grams are 1.20 x 1025 molecules of calcium iodide?
jeka57 [31]

Answer:

1230

Explanation:

1.20×1025=1230 is your answer

5 0
2 years ago
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