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My name is Ann [436]

3 years ago

8

Which example involves a phase change in which heat energy is released by the substance

1 answer:

a_sh-v [17]3 years ago

7 0

What are the examples?

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Solid sodium hydroxide <br> NaOH<br> decomposes into gaseous water and solid sodium oxide .

kari74 [83]

What about it do you want answered

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3 years ago

What is the name of the element with the atomic number 79

natima [27]

Look it up, it’s not that hard.

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3 years ago

What could J.J. Thomson conclude from his experiments?

KonstantinChe [14]

Answer:C, atoms must balance positive and negative particles.

Explanation: Got it correct on edgenuity.

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3 years ago

How many moles of carbon and hydrogen are needed to produce 10 mol of ethylene

alekssr [168]

I think 1.00 mol sorry if I’m wrong

7 0

3 years ago

muriatic acid is the commercial name for hydrochloric acid that can be purchased from hardware stores as a solution that is 30%(

SSSSS [86.1K]

We have 30% (w/w) HCl this means :
100 g solution contains 30 g HCl
?? g solution contains 7.5 g HCl
By cross multiplication:
Mass of solution = $\frac{100 x 7.5 }{30}$ = 25 g solution

5 0

3 years ago