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3 years ago

Under what conditions of temperature and pressure is a gas most soluble in water?

Chemistry

1 answer:

Valentin [98]3 years ago

8 0

Answer:

A gas is most soluble in water under conditions of high pressure, and low temperature.

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If a lab requires each lab group to have 25ml of a solution and it takes 15 grams of CuNO3 to make 1 liter of solution how many

tino4ka555 [31]

We need to do some general algebra here.

We will find that you need 8.25 grams of CuNO₃ to make enough solution for the 22 labs.

Each lab group needs 25 ml of solution.
it takes 15 g of CuNO₃ to make one L of that solution.
There are 22 labs.

Because each lab needs 25 ml of solution, 22 labs will need that amount 22 times, so the <u>total amount of solution needed</u> is:

22*25ml = 550 ml

Now we know that we need 15 grams to make one liter of solution, and:

1 L = 1000ml

Then you need 15g to make 1000ml

and x (we want to find this amount) to make 550ml

Then we can write two equations (not actual equations, as these are different units) like:

x = 550ml

15g = 1000ml

Now we can take the quotient between these two equations:

x/15 g = (550ml/1000ml)

And now we can solve this for x:

x = (550ml/1000ml)*15g = 8.25g

So you need 8.25 grams of CuNO₃ to make enough solution for the 22 labs.

If you want to learn more, you can read:

brainly.com/question/8743486

5 0

3 years ago

How many moles of tungsten carbide will be produced if plenty of tungsten is reacted with 1.25 moles of carbon?

Tanya [424]

Answer:

1.25 moles of tungsten carbide

Explanation:

Tungsten carbide, WC, is a substance that is produced prom carbon and tungsten as follows:

W + C → WC

Based on the reaction, 1 mole of Carbon produce 1 mole of tungsten carbide. That means if 1.25 moles of carbon are added in excess of tungsten, the moles of tungsten carbide produced are:

<h3>1.25 moles of tungsten carbide</h3>

8 0

3 years ago

If the molecules in the above illustration react to form NH3 according to the equation N2 3 H2 2 NH3 , the limiting reagent is ,

Kamila [148]

Answer:

Follows are the solution to these question:

Explanation:

Given equation:

$N_2+3H_2 \longrightarrow 2NH_3$

In this equation:

$1 N_2$ gives $= 2NH_3$

so,

$3N_2$ gives= $2 \times 3 = 6 NH_3$

similarly:

$3H_2$ gives $= 2NH_3$

So, $6H_2$ gives = $\frac{2}{3}\times 6=4NH_3$

Its limited reagent is = $N_2$

The amount of $NH_3$ molecules were formed = 4.

and the amount of $H_2$ excess molecules are= 1

8 0

3 years ago

Prioritization is an example of a skill that helps you reach long term goals because

Xelga [282]

Answer:

because it helps you to understand what’s the most important thing on your ”to - do” list and helps you to get it done. the higher up it is on your list, the more you have to prioritize it to get it dome.

7 0

3 years ago

Gallium (Ga) consists of two naturally occurring isotopes with masses of 68.926 and 70.925 amu. (a) How many protons and neutron

pav-90 [236]

Answer:

$neutrons_{Ga-69}=38\\\\neutrons_{Ga-71}=40$

Explanation:

Hello!

In this case, since isotopes of the same element have the same number of protons and electrons but different atomic mass, we can compute the number of neutrons by subtracting the number of protons to the atomic mass of the isotope; thus, for Ga-69 and Ga-71 (rounded up to whole numbers), we obtain:

$neutrons_{Ga-69}=69-31=38\\\\neutrons_{Ga-71}=71-31=40$

Best regards!

8 0

3 years ago