All categories

4 years ago

A flask contains Ne at 542 mmhg together with At at 234 mmHg. What will the total pressure be?

Chemistry

1 answer:

sineoko [7]4 years ago

3 0

Answer:

The total pressure will be 1, 021 atm

Explanation:

We apply Dalton's law, where for a gas mixture the total pressure is the sum of the partial pressures of each gas that makes up that mixture. The unit of pressure is converted into atm:

760mmHg----1 atm

542mmHg----x=(542mmHgx 1 atm)/760mmHg=0,713 atm

234mmHg----x=(234mmHgx 1 atm)/760mmHg=0,308 atm

Pt=P Ne + P At= 0,713 atm + 0,308 atm= 1, 021 atm

You might be interested in

2. Iron has a density of 7.86 g/cm). A sample of an unknown metal is measured and found to be

alekssr [168]

The volume of sample = 2.25(1.5)(2.25) = 7.59375 cm3
Density = mass / volume
Density = 55.75 / 7.59375 = 7.34156 g/cm3

As the density of iron is 7.86 g/cm3 instead, it is not iron

3 0

3 years ago

A 100 gram block is placed on a scale that is known to have a 12% error. What will the scale read?

sesenic [268]

The scale will read 112 grams.

Why?

Since we already know the percent error of the scale (12%) and we also know the mass of the block that is placed on the scale, we can calculate what will be the read of the scale by using the following formula:

$ScaleRead=100g+(100g*\frac{12}{100})=100g+(100g*0.12)=100g+12g\\\\ScaleRead=112g$

We can see that the scale will read 112 grams.

Let's verify that we are right by using the following formula to verify if the obtained value for the scale read will be 12%:

$PercentError=\frac{ActualValue-RealValue}{RealValue}*100=\frac{112g-100g}{100g}*100\\\\PercentError=\frac{12g}{100g}*100=0.12*100=12(percent)$

Hence, we can see that the scale will read 112 grams.

Have a nice day!

7 0

4 years ago

Need help ASAP PLEASE!!

seropon [69]

What about? You must provide a question :)

8 0

3 years ago

100g of radioactive mass has a half life of 5 days. Calculate the mass decayed off after 15 days

Lina20 [59]

Answer:

... mass has half life of 5 days. Calculate the mass decayed off after 15days? In Chemistry 2 Answers Available Asked by Miss Flawless on 7th July, 2018.

Explanation:

7 0

3 years ago

The Concrete that surrounds a swimming pool takes less time to heat up than the water in the pool. Why

yuradex [85]

Answer:

The Concrete has a lower specific heat.

Explanation:

4 0

3 years ago