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3 years ago

What happens to ice as it melts

Chemistry

2 answers:

grandymaker [24]3 years ago

6 0

It turns into water and becomes a liquid

alexandr1967 [171]3 years ago

4 0

Doesnt the particals get further apart turnijg it into a liquid??

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Copper was the first metal to be produced from its ore because it is the easiest to smelt, that is, to refine by heating in the

Ganezh [65]

Answer:

57.48%

Explanation:

Calculate the mass of 1 mole of malachite:

MM Cu = 63.55

MM O = 16.00

MM H = 1.01

MM C = 12.01

$(Cu_{2}(OH)_{2}CO_{3})$

A mole of malachite has:

2 moles of Cu

5 moles of O

2 moles of H

1 mole of C

MW Malachite = 2*MM(CU) + 5*MM(O) + 2*MM(H) + 1 *MM(C)

MW Malachite = 2*63.55 + 5*16.00 + 2*1.01 + 1*12.01

MW Malachite = 221.13

Mass of Cu in a mole of Malachite = 2*MM(CU) = 127.1

Now divide the mass of Cu by the mass of Malachite

$%Cu = \frac{127.1}{221.13} =0.5748=57.48%$

7 0

4 years ago

In order to boil, a liquid's vapor pressure must be greater than the pressure of the atmosphere.

hjlf

The anwser is false.

5 0

3 years ago

Differentiate between physical and chemical change

Andrei [34K]

Explanation:

Physical Change is a type of change where by no new chemical substance is formed. Physical changes are reversible. whilst Chemical change is a change where new chemical substance is always formed. Chemical changes are usually irreversible.

Examples of Physical Change include;

Melting of Ice

Melting of Candle

Grinding of chalk

Magnetization of Iron

Examples of Chemical Change includes;

Cooking of food

Rusting of Iron

Burning of Charcoal

3 0

3 years ago

Timbre describes the sound’s _____.

sergeinik [125]

Answer:

Terms we might use to describe timbre: bright, dark, brassy, reedy, harsh, noisy, thin, buzzy, pure, raspy, shrill, mellow, strained. I prefer to avoid describing timbre in emotional terms (excited, angry, happy, sad, etc.); that is not the sound quality, it is its effect or interpretation

5 0

3 years ago

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plez hurry Which is an important safety precaution that should be taken during a tornado? Stay away from doors and windows. Move

jeka57 [31]

Answer: stay away from doors and windows.

Explanation:

to aviod geting hit by glass

5 0

3 years ago

Read 2 more answers