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Cerrena [4.2K]
3 years ago
11

What is the mass of 1.25 moles of Na2O?​

Chemistry
1 answer:
olga_2 [115]3 years ago
4 0

Answer:

Explanation:

I have the same question

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A student measures the mass of a sample of a metallic element, M. Then the student heats the sample in air, where it completely
mixas84 [53]

Answer:What is the actual Molar mass of M?

Explanation:

The mass of the M is measured before, and after heating. Therefore, its easy to calculate the oxygen required to heat the M. Applying that to the reaction M+O₂⇒MO, will get you all the information about the Oxygen, and therefore you can calculate the Molar mass of M.

5 0
3 years ago
The rate of product formation by an enzyme-catalyzed reaction would be increased by
EastWind [94]
The rate of product formation by an enzyme-catalyzed reaction would be increased by temperature (until it reaches optimim temperature)
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3 years ago
.Each of the three resonance structures of NO3– has how many lone pairs of electrons?
Alexandra [31]

Answer:

➢ There are eight lone pairs of electrons in each of the three resonance structures of NO3- ion. These <u>eight lone pairs</u> are provides by three oxygen atoms. There are no lone pairs on nitrogen atom.

Into \:  your Arms

#CarryOnLearning

6 0
3 years ago
Changes in the forms of energy are called
Andrews [41]
The answer is B ( you could have just looked it up online)
4 0
3 years ago
A gas with a volume of 4.0 L at 90.0 kPa expands until the pressure drops to 20.0 kPa. What is its new volume if the temperature
Flauer [41]
<span>You are trying to find V2, the formula is V2</span>= <span><span>P1 / </span><span>P2 </span></span>⋅ V<span>1
</span><span>input your numbers, V2</span>= <span><span>90.0kPa / </span><span>20.0kPa </span></span>⋅ 4.0 L to get 18 L
4 0
3 years ago
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