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crimeas [40]
3 years ago
12

which of these equations are balance a) 3 H2SO + 2AI = AI2(SO4)3 3H2 b) 2KCI + Pb(NO3)2 = 2KNO3 + PbCI2

Chemistry
1 answer:
mihalych1998 [28]3 years ago
6 0

Both equations are balanced.

a) <em>3H₂SO₄ + 2Al ⟶ Al₂(SO₄)₃ + 3H₂ </em>

<u>On the left</u> <u>On the right</u>

      6H                6H

      3S                 3S

    12O               12O

     2Al                2Al

b) <em>2KCl + Pb(NO₃)₂ ⟶ 2KNO₃ + PbCl₂ </em>

<u>On the left</u>   <u>On the right </u>

      2K                 2K

      2Cl               2Cl

      1Pb                1Pb

     2N                 2N

     6O                 6O

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At constant temperature a bicycle tire pump contains 252mL of air at 995kPa pressure. The plunger of the pump is pushed down unt
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The new pressure of the pump is 26.05 atm or 2639.4 kPa

Explanation:

Step 1: Data given

Volume of the bicycle tire pump = 252 mL = 0.252 L

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The volume of the pump is reduced to 95.0 mL = 0.095 L

Step 2: Calculate the new pressure

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⇒with V2 = the reduced volume of the pump = 0.095 L

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0.252 L * 9.81989 atm = 0.095 L * P2

P2 = 26.05 atm

The new pressure is 26.05 atm

OR

0.252 L * 995 = 0.095 L * P2

P2 = 2639.4 kPa

The new pressure of the pump is 26.05 atm or 2639.4 kPa

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