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lions [1.4K]
2 years ago
7

What substance will turn form a liquid to solid when cold at 4 degrees Celsius​

Chemistry
2 answers:
Whitepunk [10]2 years ago
3 0

Answer:

Water solidifys at 4 degrees Celsius

Explanation:

Hope this helps! :3

Alisiya [41]2 years ago
3 0

Answer:

The freezing point is the temperature at which a liquid turns to a solid. The freezing point at which water — a liquid — turns to ice — a solid — is 32°F (0°C).

Explanation:

When liquids are turned into a solid by cooling this is called freezing or solidifying. Examples: Water turning into ice when the temperature drops below 0˚C is an example of freezing. Liquid lava turning into solid rock when it cools is called solidifying

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The mass of a deuterium nucleus 21H is less than its components masses. Calculate the mass defect.________ amu
Inessa [10]

Answer:

The mass defect of a deuterium nucleus is 0.001848 amu.

Explanation:

The deuterium is:

^{A}_{Z}X \rightarrow ^{2}_{1}H  

The mass defect can be calculated by using the following equation:

\Delta m = [Zm_{p} + (A - Z)m_{n}] - m_{a}

Where:

Z: is the number of protons = 1

A: is the mass number = 2      

m_{p}: is the proton's mass = 1.00728 amu  

m_{n}: is the neutron's mass = 1.00867 amu

m_{a}: is the mass of deuterium = 2.01410178 amu

Then, the mass defect is:

\Delta m = [1.00728 amu + (2- 1)1.00867 amu] - 2.01410178 amu = 0.001848 amu

Therefore, the mass defect of a deuterium nucleus is 0.001848 amu.

I hope it helps you!  

5 0
2 years ago
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cluponka [151]

Answer:

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Explanation:

3 0
2 years ago
The coefficients in a chemical equation??
cricket20 [7]
D is the answer I believe.
3 0
2 years ago
5.5x10² – 6.50x10'<br> Express the calculation in correct significant digits
OLga [1]

Answer:

6.15x10^2

Explanation:

Hello!

In this case, when performing mathematical operations with numbers in scientific notation, the first step is to write them in standard notation:

550 - 65.0

Thus, the result without any significant figures-based analysis is:

615.0

However, since 550 is significant to the ones and 65.0 to the tenths, we need to round the result to the bigger significance, in this case to the ones; therefore the appropriate result would be:

615

That in scientific notation would be:

6.15x10^2

Best regards!

5 0
3 years ago
What is carbon role in chemical bonding with hydrogen
yKpoI14uk [10]

Answer: covalent bonds

Explanation:

7 0
3 years ago
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