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3 years ago

Q. Read the given questions carefully and then select the appropriate answer

Chemistry

1 answer:

LUCKY_DIMON [66]3 years ago

5 0

Answer:

a. moles divide by volume

Explanation:

Molarity, denoted by symbol M, refers to the molar concentration of a solution. It is calculated using the formula as follows:

Molarity = number of moles of a solute ÷ volume of the solvent

Since, number of moles (n) has the unit: moles and volume (V) has the standard unit: Litres, then the unit for molarity is moles/litre or M.

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4 years ago

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3 years ago

Identify the type of reaction: 2AgCl + BaBr2 -> 2AgBr + BaCl2

Marta_Voda [28]

Answer:

Explanation:

Just look at the reactants.

2AgCl + BaBr2

The first reactant is made of 2 elements.

The second reactant is made of 2 elements.

It can't be a decomposition. At this level there is only one reactant made of 2 elements. Something like

2MgO ===> 2Mg + O2

is a decomposition. One compound breaking down into 2 elements Mg and O.

It can't be a combustion. One of the reactants in a combustion is oxygen. Those equations look like

C3H8 + 5O2 ==> 3CO2 + 4H2O

That would be what a combustion looks like

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There are elements on both sides of the reaction.

that leaves a double replacement which I wrote about how you distinguish it.

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3 years ago