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denis23 [38]
3 years ago
11

How many protons neutrons and electrons does beryllium have

Chemistry
2 answers:
choli [55]3 years ago
5 0
Beryllium has 4 protons, 4 electrons and 5 neutrons
Dafna11 [192]3 years ago
4 0
Beryllium has 4 protons, 5 neutrons, and 4 electrons. 
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3 years ago
The student collects the H2 (g) produced by the reaction and measures the volume
BARSIC [14]

The question is incomplete, the complete question is;

The student collects the H2(g) produced by the reaction and measures its volume over water at 298 K after carefully equalizing the water levels inside and outside the gas-collection tube, as shown in the diagram below. The volume is measured to be 45.6mL . The atmospheric pressure in the lab is measured as 765 torr , and the equilibrium vapor pressure of water at 298 K is 24 torr .(i) The pressure inside the tube due to the H2(g)

Answer:

741 torr

Explanation:

From the question we can see that the atmospheric pressure in the lab is 765 torr.

The vapour pressure of water = 24 torr

From Dalton's law of partial pressure, we know that;

Total pressure = Pressure of the H2 + Partial pressure of water vapour

Therefore;

Pressure of H2 = Total pressure - Partial pressure of water vapour

Pressure of H2 = 765 torr - 24 torr = 741 torr

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3 years ago
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What is 25 grams of HF?
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7 0
3 years ago
If a solution has a pH of 2, what is the hydroxide ion concentration?
murzikaleks [220]

Answer:

A

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[OH]= 10^-12

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1 year ago
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