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vodka [1.7K]
3 years ago
6

Which of these substances is a compound Carbon Chlorine Uranium Ammonia

Chemistry
1 answer:
svetlana [45]3 years ago
4 0
The answer to this question will be Uranium
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13. Find the total number of atoms present in the following molecules. a. 5 H₂O b. Zn Cl₂​
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Answer:

A= 15 atoms B= 3

Explanation:

5 x 2 + 5 x 1

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Calculate the mass of water vapour present in a room of volume 400 m3 that contains air at 27 °C on a day when the relative humi
Alex73 [517]

Answer:

Mass of water = 6251. 706g or 6.25Kg

Explanation:

Relative humidity = (actual vapor pressure/saturation vapor pressure) * 100%

Actual vapor pressure, Pw = relative humidity * saturation vapor pressure

Pw = 60% * (35.6 *0.001)atm = 0.0216atm

Note: 1mbar = 0.001atm

Using the ideal gas equation: PV=nRT; where P = Pw= 0.02136atm, V= (400

* 1000)dm^3, R= 0.082 atmdm^3/kmol, T= (27+273)K, n = number of moles

Note: 1m^3 = 1000dm^3,R is the molar gas constant.

Making n subject of the formula, n = PV/RT

n= (0.02136 * 400000)/(0.082 * 300) = 347.317 moles

Mass (g) = number of moles (n) * molar mass

molar mass of water=18g

Mass of water = 347.317 * 18 = 6251. 706g or 6.25Kg

6 0
3 years ago
All generators need some source of energy to rotate the coil or magnets.<br> True or False
Llana [10]

.energy mechanical needs it Answer:

Yes.

Explanation:

7 0
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I need this answer ASAP
asambeis [7]

Answer:

B: Physical Science

Explanation:

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5 0
3 years ago
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