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3 years ago

This is hard for me Anyone explain foe me Help !!!

Chemistry

1 answer:

Bumek [7]3 years ago

3 0

There is more carbon in the atmosphere

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You have 250mL of 3M HCI. What volume will you have if you dilute it to 0.5M?

Yuri [45]

You use the equation M1V1=M2V2 for dilution problems
(250)3=.5x
x= 1500 mL

7 0

4 years ago

Classify which compounds will dissolve in water and which ones will not dissolve in water.

vredina [299]

Answer:

Dissolves in water: Acetone, 1-propanol, Methanol

Do not dissolve in water: Hexane, Decane

Explanation:

From the principle that like dissolves like,polar substances will dissolve in polar solutions, while non-polar substances will dissolve in non-polar substances.

Water is a polar solution, therefore, polar substances will dissolve in it.From the given options:

Acetone is a polar molecule, therefore, it will dissolve in water.

1-propanol is a polar molecule, therefore, it will dissolve in water.

Hexane is a non-polar molecule, therefore, it will not dissolve in water.

Methanol is a polar molecule, therefore, it will dissolve in water.

Decane is a non-polar molecule, therefore, it will not dissolve in water

6 0

3 years ago

A heat lamp produces____<br> light.

Ipatiy [6.2K]

Answer:

infrared light

Explanation:

7 0

3 years ago

An element's atomic number is 7. How many protons would an atom of this element have?

rusak2 [61]

well the atomic number is 7 the number of protons is also equal to 7 .

hope this helps

8 0

3 years ago

Read 2 more answers

Sodium bicarbonate (NaHCO3) is commercially known as baking soda. How many grams and atoms of oxygen are there in 15 grams of so

ella [17]

Answer:

3 atoms of O

8.57g

Explanation:

The problem here is to find the mass of oxygen in the compound and the number of atoms of oxygen.

The formula of the compound is:

NaHCO₃;

Here we have:

1 atom of Na

1 atom of H

1 atom of C

3 atoms of O

So there are 3 atoms of O

To find the mass of oxygen , we use the molar mass of oxygen;

Molar mass of oxygen = 16g/mol

Mass of oxygen = $\frac{3(16)}{84.01}$ x 15 = 8.57g

4 0

3 years ago