All categories

4 years ago

WILL GIVE BRAINLIST: Which compound is more soluble in water at 25 degrees Celsius?

Chemistry

1 answer:

Sauron [17]4 years ago

3 0

Answer ethylene glycol

Explanation: Ethylene glycol has two hydroxy groups both of which form hydrogen bonds with water. Greater is the number of hydrogen bonds, greater is the extent of hydrogen bonding and greater is the solubility in water.

You might be interested in

MARKING BRAINLIEST!

blagie [28]

Answer: B) Linda’s speed was slower than Meg’s speed

Explanation: Meg ran almost twice as fast as Linda since she took less time to finish the same amount of distance

8 0

3 years ago

A sample of an unknown gas effuses in 14.4 min. An equal volume of H2 in the same apparatus under the same conditions effuses in

Elena-2011 [213]

Answer:- molar mass of the unknown gas is 71.5 gram per mol.

Solution:- From Graham's law of effusion rates, the rate of effusion of a gas is inversely proportional to the square root of it's molar mass.

When we compare the effusion rates of two gases then the formula for Graham's law is:

$\frac{rate_1}{rate_2}=\sqrt{\frac{M_2}{M_1}}$

In this formula, V stands for volume and M stands for molar mass

Rate is volume effused per unit time. Since, the volumes are same, the formula could be written as:

$\frac{t_2}{t_1}=\sqrt{\frac{M_2}{M_1}}$

let's say in formula, subscript 1 is for hydrogen gas and 2 is for the unknown gas.

Molar mass of hydrogen is 2.02 grams per mol and the time taken to effuse it is 2.42 min. The time taken to effuse the unknown gas is 14.4 min and we are asked to calculate it's molar mass. let's plug in the values in the formula:

$\frac{14.4}{2.42}=\sqrt{\frac{M_2}{2.02}}$

$5.95=\sqrt{\frac{M_2}{2.02}}$

doing squares to both sides:

$35.4=\frac{M_2}{2.02}$

$M_2=35.4*2.02$

$M_2=71.5$

So, the molar mass of the unknown gas is 71.5 grams per mol.

4 0

4 years ago

What is the mass of 1 mole of water

Lady bird [3.3K]

Answer:

18.01528 g/mol

Explanation:

Using the equation to figure this out

4 0

4 years ago

Read 2 more answers

Need a lil help here

Step2247 [10]

OKKKKKKKKKKKKKKKKKKKKKK

7 0

4 years ago

Read 2 more answers

The halogens are in Group 7 of the periodic table.

Kaylis [27]

Answer:

Explanation:

When it comes to the trend of reactivity in halogens, the reactivity decreases down the table. This is because in the nucleus of the atoms (mix of protons and neutrons), there is less of an attraction of the protons to the electrons on the outer shell, which gets further away going down. Since halogens are non metals, they need to gain electrons to become stable, and so this lesser attraction to the electrons may not allow this at least immediately. Fluorine is the most reactive out of all, have less of its outer shells and so being able to react much quickly.

6 0

3 years ago