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VARVARA [1.3K]
3 years ago
5

Element Z reacts with calcium to form the ionic compound Caz,? To which group does Z belong? (1) Group 2 (2) Group 13 (3) Group

17 (4) Group 18​
Chemistry
1 answer:
viva [34]3 years ago
6 0

Explanation:

Answer is (3) Group 17.

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4 years ago
A gas is contained in a thick-walled balloon. When the pressure changes from 39.1 bar to 87.0 bar the volume changes from blank
lidiya [134]

Answer: -

1.34 L

Explanation: -

Initial Pressure P 1 = 39.1 bar

Initial Temperature T 1 = 643 K

Let the initial volume be V 1.

Final pressure P 2 = 87.0 bar

Final temperature T 2 = 525 K.

Final volume V 2 = 0.492 L

Using the equation

\frac{P1 V 1}{T1} = \frac{P 2 V 2}{T2}

V 1 = \frac{P2 V2 T1}{P 1 T2}

Plugging in the values

We have

V 1 = 87 bar x 0.492 L x 643 K / (39.1 bar x 525 K)

= 1.34 L

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4 0
4 years ago
Read 2 more answers
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