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mixer [17]
3 years ago
10

What is the atomic number of neon?

Chemistry
1 answer:
anzhelika [568]3 years ago
4 0

Answer:

the atomic number of a neon is 10

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4.13 moles of chromium (III) nitride weighs how much?
Leya [2.2K]

Answer: 272.5915639999...

Explanation:

3 0
3 years ago
How much heat must be removed from 456 g of water at 25. 0 c to hcange it into ice at 10 c
ValentinkaMS [17]

The heat required to convert water is given as the product of the mas and the latent heat. 28.34 kJ heat must be removed from the water to change it into ice.

<h3>What is heat energy?</h3>

Heat energy is the product of mass, specific heat capacity, and temperature change. It is given as,

\rm Q = mc \Delta T

Given,

Mass of water = 456 gm

Specific heat capacity = 4.186 J / g K

Temperatutre change = 14.85 K

Substituting values above:

\begin{aligned} \rm Q &= 456 \times 4.186 \times 14.85\\\\&= 28345.91\;\rm J\\\\&= 28.34\;\rm kJ\end{aligned}

Therefore, 28.34 kJ of heat energy should be removed from the water.

Learn more about the heat here:

brainly.com/question/14052023

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6 0
2 years ago
A science teacher asked students to calculate the density of a toy block. The mass of the block was 110 grams and the volume of
Kipish [7]

Answer:

13.75

Explanation:

Density is equal to mass divided by volume. 110/8 = 13.75

5 0
3 years ago
I need help with #4... Chemistry is my worst subject.
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Use slader.com it helps with all textbook work!
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Weight in grams of NaCl
Allisa [31]

Answer: 58.44g

Explanation: The molar mass of NaCl is 58.44g.

7 0
3 years ago
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