3 years ago

The melting point of a substance is a ________ property of the substance

1 answer:

8 0

Chemical property of the substance but then again it could be physical

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kaheart [24]

Answer:

$\Delta H$ will be 90054 J

Explanation:

Number of moles = (mass)/(molar mass)

Molar mass of $CuCl_{2}$ = 134.45 g/mol

So, 1.00 g of $CuCl_{2}$ = $\frac{1.00}{134.45}mol$ of $CuCl_{2}$ = 0.00744 mol of $CuCl_{2}$

0.00744 mol of $CuCl_{2}$ produces 670 J of heat

So, 1 mol of $CuCl_{2}$ produces $\frac{670}{0.00744}J$ of heat or 90054 J of heat

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3 years ago

katrin [286]

D is the correct answer

every other option contains an element

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-Dominant- [34]

HCl(aq) + KOH(s) --> KCl(aq) + H2O(l)

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Natali5045456 [20]

The Answer Is A 21% oxygen and 78%nitrogen

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CaHeK987 [17]

Iron filings can be attracted by the magnet whereas salt can not. So the mixture can be separated by a magnet

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