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wariber [46]
2 years ago
5

Zoom in if need to PLEASE HELP DUE TOMARROW

Chemistry
1 answer:
padilas [110]2 years ago
5 0
The best way to do this is to google search each question, or look it up on quizlet.com
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Write the formula and determine the percent by mass of the salt in barium hydroxide octahydrate *
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Answer:

315.51g/mol

Explanation:

137(33 + (16.00 + 1.01) 2 + 8 [1.01 (2) + 16.00] = 315.51g/mol

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Balanced chemical equation for the standard formation reaction of solid sodium carbonate
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CO2 + 2 NaOH → Na2CO3 + H2O
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A balloon contains 2.0 L of air at 101.5 kPa . You squeeze the balloon to a volume of 0.25 L.
8_murik_8 [283]
<h3>Answer:</h3>

812 kPa

<h3>Explanation:</h3>
  • According to Boyle's law pressure and volume of a fixed mass are inversely proportional at constant absolute temperature.
  • Mathematically, P\alpha \frac{1}{V}

At varying pressure and volume;

P1V1=P2V2

In this case;

Initial volume, V1 = 2.0 L

Initial pressure, P1 = 101.5 kPa

Final volume, V1 = 0.25 L

We are required to determine the new pressure;

P2=\frac{P1V1}{V2}

Replacing the known variables with the values;

P2=\frac{(101.5)(2.0L)}{0.25L}

           = 812 kPa

Thus, the pressure of air inside the balloon after squeezing is 812 kPa

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Help pls , question is in picture
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IM PRETTY SURE IT IS D !! IF ITS WRONG IM SORRY THAT WHAT

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