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strojnjashka [21]
3 years ago
9

Why is hydrogen (H) placed with the elements in Group 1A?

Chemistry
2 answers:
Alex787 [66]3 years ago
6 0
It has ns1 electron configuration like the alkali metals. 
NISA [10]3 years ago
6 0

The answer is -


It has the same number of valence electrons


If this helped please rate :)

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If I have an unknown quantity of gas at a pressure of 380 mmHg, a volume of 25 L, and a temperature of
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Answer:

                     0.5077 moles

Explanation:

Data Given:

                Moles  =  n  =  <u>???</u>

                Temperature  =  T  =  300 K

                 Pressure  =  P  =  380 mmHg = 0.50 atm

                 Volume  =  V  =  25 L

Formula Used:

Let's assume that the hydrogen gas in balloon is acting as an Ideal gas, the according to Ideal Gas Equation,

                 P V  =  n R T

where;  R  =  Universal Gas Constant  =  0.082057 atm.L.mol⁻¹.K⁻¹

Solving Equation for n,

                 n  =  P V / RT

Putting Values,

                 n  =  (0.50 atm × 25 L) / (0.082057 atm.L.mol⁻¹.K⁻¹ × 300 K)

                 n  = 0.5077 moles

6 0
3 years ago
Identify the gas law that applies to the following scenario: A 36.5 liter balloon holding 2.9 moles of carbon dioxide leaks. If
Ksenya-84 [330]

Answer:

Avogadro's Law

Explanation:

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V1n2 = V2n1

<em>Where V is volume and n are moles of 1, initial state and 2, final state of the gas</em>

<em />

That means, right option is:

<h3>Avogadro's Law </h3>

6 0
2 years ago
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