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3 years ago

12

For each row in the table below, decide whether the pair of elements will form a molecular compound held together by covalent ch

emical bonds

1 answer:

maw [93]3 years ago

5 0

Answer:

1- yes

HBr--hydrogen bromide

2- no

BaBr₂----barium bromide

3- yes

NCl----- nitrogen chlorine

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Show the calculation of the mass (grams) of a 14.5 liter gas sample with a molecular weight of 82 when collected at 29°C and 740

QveST [7]

Answer:

In this conditions, the gaswll weight 46.74 g.

Explanation:

The idal gas law states that:

PV = nRT,

P: pressure = 740 mmHg = 0.97 atm

V: volume = 14.5 L

n: number of moles

R: gas constant =0.08205 L.atm/mol.K

T: temperature = 29°C = 302.15K

$n = \frac{PV}{RT} \\n = \frac{0.97x14.5}{0.082 x 302.15 } \\n = 0.57 mol$

1 mol gas ___ 82 g

0.57 mol gas __ x

x = 46.74 g

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4 years ago

If a gas is compressed from 4 L to 1 L and the temperature remains constant, what happens to the pressure?

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If T=const
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3 years ago

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Answer:

1st one is correct

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3 years ago

In the molecule Br2, how many bonds would be present between the two atoms of Br

Evgesh-ka [11]

Answer:

The correct answer is A) single

Explanation:

In the case of the Bromo atom, it requires 1 electron to complete its octet, therefore it shares 1 electron with the other Bromo atom.

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