Chemistry, 15.07.2021 05:00 wrerteteT2827

When the pressure that a gas exerts on a sealed container changes from 767 mm Hg to 800 mm Hg, the temperature changes from 325 K to[?]_K.

When the pressure that a gas exerts on a sealed container changes from 767 mm Hg to 800 mm Hg, the

Answers: 1

Show answers

Answers

Answer from: svnchezzz

$\boxed {\boxed {\sf 339 \ K }}$

Explanation:

The question asks us to find the new temperature given a change in pressure. We will use Gay-Lussac's Law, which states the pressure of a gas is directly proportional to the temperature. The formula is:

$\frac {P_1}{T_1}=\frac{P_2}{T_2}$

The pressure changes from 767 millimeters of mercury (P₁) to 800 millimeters of mercury (P₂).

$\frac {767 \ mm \ Hg }{ T_1}= \frac{800 \ mm \ Hg}{ T_2}$

The temperature is initially 325 K (T₁), but we don't know the final temperature or T₂.

$\frac {767 \ mm \ Hg }{ 325 \ K}= \frac{800 \ mm \ Hg}{ T_2}$

We are solving for the final temperature, so we must isolate the variable T₂. Cross multiply. Multiply the first numerator by the second denominator, then the first denominator by the second numerator.

$767 \ mm \ Hg * T_2 = 325 \ K * 800 \ mm \ Hg$

T₂ is being multiplied by 767 millimeters of mercury. The inverse of multiplication is division. Divide both sides by 767 mm Hg.

$\frac {767 \ mm \ Hg * T_2}{767 \ mm \ Hg} = \frac {325 \ K * 800 \ mm \ Hg }{767 \ mm \ Hg}$

$T_2 = \frac {325 \ K * 800 \ mm \ Hg }{767 \ mm \ Hg}$

The units of millimeters of mercury (mm Hg) cancel.

$T_2= \frac {325 \ K * 800 }{767 }$

$T_2= \frac {260,000 }{767} \ K$

$T_2= 338.983050847 \ K$

The original measurements have 3 significant figures, so our answer must have the same. For the number we found, that is the ones place. The 9 in the tenths place tells us to round the 8 up to a 9.

$T_2 \approx 339 \ K$

The temperature changes from 325 Kelvin to 339 Kelvin.

Answer from: Quest

- calcium has greater affinity to bond with electron receptors than hydrogen does and hence, it has the ability to replace hydrogen in most of its compounds.

- lithium has 2 valence electrons in the product because it can make only 1 bond with hydrogen. beryllium has 4 valence electrons in the product because it can only make 2 bonds. it has fewer electrons than neon and can react with electron donors. each hydrogen has 2 valence electrons, the same as helium.

- the covalent bond formed between carbon and hydrogen is polar because carbon is more electronegative than hydrogen and it attracts the bonded electron pair closer to itself, thus giving hydrogen a partial positive charge.

- a hydrogen bond is a relatively weak bond that hydrogen atoms make with the electronegative atoms nitrogen, oxygen or fluorine.

so the best choice is a.) 2 calcium (ca) atoms

Answer from: Quest

i just learnt this recently but i need to look through my notes again

Another question on Chemistry

Chemistry, 22.06.2019 04:40

In which environment would primary succession occur? a forest with a few remaining trees after a recent wildfire an area of exposed rock after a glacier melts away beach that is exposed to the air at low tide an abandoned baseball field in a small town

Answers: 1

Answer

Chemistry, 22.06.2019 08:00

This classification of drug typically changes the brain's chemistry and reduces its ability to create its own endorphins.

Answers: 1

Answer

Chemistry, 22.06.2019 22:00

All of the following are homogeneous mixtures except a) sugar dissolved in water. b) orange juice. c) coffee with cream. d) household vinegar. e) apple juice

Answers: 1

Answer

Chemistry, 22.06.2019 23:00

Arectangle has a diagonal 20 inches long that forms angles of 60 and 30 with the sides. find the perimeter of the rectangle. for geometry

Answers: 3

Answer

You know the right answer?

When the pressure that a gas exerts on a sealed container changes from 767 mm Hg to 800 mm Hg, the t...

Questions