2 years ago

Which statement indicates that a substance may be an ionic compound?

1 answer:

3 0

If it has a metal and a nonmetal. Not sure if this helps, but I hope it does :)

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Nonamiya [84]

Answer:

2H3PO4 + 3Ca(OH)2 = Ca3(PO4)2 + 6H2O

3CaO + P2O5 = Ca3(PO4)2

5 0

2 years ago

crimeas [40]

Answer: There are $10.5\times 10^{23}$ formula units in 1.75 mol sample of NaCl.

Explanation:

According to avogadro's law, 1 mole of every substance occupies 22.4 L at STP and contains avogadro's number $6.023\times 10^{23}$ of particles.

1 mole of NaCl contains = $6.023\times 10^{23}$ formula units

Thus 1.75 mol of NaCl contains = $\frac{6.023\times 10^{23}}{1}\times 1.75=10.5\times 10^{23}$ formula units

Thus there are $10.5\times 10^{23}$ formula units in 1.75 mol sample of NaCl.

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2 years ago

Fed [463]

Solids' particles move a lot faster and closer together. Liquids' are more spread apart and move slower. So there is more energy in the solid

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3 years ago

Alina [70]

Answer:

well you see here if you add 15+15 it equals 30

Explanation:

please put the question :)

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2 years ago

weeeeeb [17]

the cell structure represented by x is the nucleus

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2 years ago