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3 years ago

How can melting point and boiling point identify a substance

Chemistry

1 answer:

Nikolay [14]3 years ago

8 0

Answer:

to determine of it is a solid liquid or gas.

Explanation:

The melting point is the temperature at which a substance converts from a solid state to a liquid state.

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what is the specific latent heat of fusion for a substance that takes 550 kj to melt 14 kg at 262 k? brainly answers

Ket [755]

q = mL

L = q/m = 550 kJ/14 kg = 39 kJ/kg

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3 years ago

Which compound dissolves in water to form an aqueous solution that can conduct an electric current?

drek231 [11]

The answer is (3) CH3COOH. CH3COOH is a acid. It can ionized in water. So the solution can conduct an electric current. And the other three can not be ionized in water.

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3 years ago

What volume (mL) of concentrated solution of magnesium chloride (9.00 M) must be diluted to 350. mL to make a 2.75 M solution of

zalisa [80]

$❤Answer$

Volume of 106.9 mL from the concentrated solution should be taken and diluted to 350 mL.

⠀

Main I'd On Indian Brainly Is - HeartCrush

$⚡ Explantion$

We can use the formula. 

c1v1 =c2v2

Where c1 is the concentration and v1 is volume of the concentrated solution. 

c2 is the concentration

and v2 is the volume of the diluted solution to be prepared

9.00 M x V1 = 2.75 M x 350 mL

V1 = 106.9 mL

Volume of 106.9 mL from the concentrated solution should be taken and diluted to 350 mL.

3 0

2 years ago

Look at the picture and answer.

Llana [10]

Answer:

In order to balance the chemical equation, you need to make sure the number of atoms of each element on the reactants side is equal to the number of atoms of each element on the product side. In order make both sides equal, you will need to multiply the number of atoms in each element until both sides are equal.

Hope this helped you.

6 0

3 years ago

How many valence electrons can atoms of non metals have?

Dmitry_Shevchenko [17]

1 to 8 valence electrons

7 0

3 years ago