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2 years ago

NiSe2 + Ca3(PO4)2 = Ni3(PO4)2 + CaSe balance please

Chemistry

1 answer:

Aliun [14]2 years ago

8 0

3Ni + Sn3(PO4)2 → Ni3(PO4)2 + 3Sn I think. Not for sure though

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Find the volume of 20g of H₂ at STP<br><br>

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Answer:224

Explanation:

We should answer it with Stoichiometry

We say: 20 g H2× (1 mol/ 2g)× ( 22.4 lit/ 1 mol) = 224

Means: we have 20 grams and every 2g H2, equals to 1 mol of it and every 1 mol of H2, equals to 22.4 lit( because of STP)

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3 years ago

Based on the equation, determine what happens to the period, T, as the frequency increases.

ryzh [129]

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A chunk of copper has a volume of 1.45 mL and a mass of 12.93 grams. What is the density of the chunk of copper?

natta225 [31]

Answer:

$Density = 8.92 \ g/mL$

Explanation:

The equation for density is:

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$Density = 8.92 \ g/mL$

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Answer:

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