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3 years ago

How many moles of magnesium ions are present in 283.8 mL of 6.74 M Mg3(PO4)2?

1 answer:

6 0

Answer:1 mole of Mg3(PO4)2 (molecule) contains 3 moles of Mg atoms, 2 moles of P atoms and 2X4 moles of O atoms. = 0.03125 moles.

Explanation:

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Fossil A is found in a rock layer above a layer containing Fossil B. Which fossil is probably older?

ch4aika [34]

Answer:

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Explanation:

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2 years ago

During a reaction 24 cubic cm of carbon dioxide was given off. After 8 minutes no more gas was produced and the reaction was com

yuradex [85]

Answer:

Explanation:

Given parameters:

Volume of CO₂ = 24cm³

time taken for the reaction to complete = 8minutes.

Unknown:

rate of reaction

Soution

The reaction rate is a measure of speed of a chemical reaction. It is often calculated using the expression below:

Reaction rate = $\frac{change in concentration of reactant/product}{time taken}$

Reaction rate = $\frac{24}{8}$ = 3cm³/min

In this reaction, 3cm³ of carbon dioxide were produced per minute

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2 years ago

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Answer:

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2 years ago

A blank and blank are examples of solids

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2 years ago

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Answer:

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2 years ago