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2 years ago

How many moles are in 54g of sliver

Chemistry

1 answer:

BabaBlast [244]2 years ago

4 0

Answer:

0.50 mols Ag

Explanation:

Given the data, we have:

mass= 54g

molar mass of Silver (Ag): 107.8 g/mol

We want moles, we can convert grams > moles using the molar mass as a "bridge" between the 2.

$54g * \frac{1 mol}{107.8 g}= 0.50 mols Ag$

Keeping an eye on the units, we'll see 54g get cancelled out by 107.8 g/mol and we'll be left with moles of Silver.

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3 years ago

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3 years ago

How many moles are contained in 2.3 liters of a 1.2M solution?

elena-s [515]

Answer:

$\boxed {\boxed {\sf 2.76 \ mol}}$

Explanation:

Molarity is found by dividing the moles of solute by liters of solution.

$molarity = \frac {moles}{liters}$

We know the molarity is 1.2 M (mol\liter) and there are 2.3 liters of solution. Substitute the known values into the formula.

$1.2 \ mol/liter= \frac {x}{2.3 \ liters}$

Since we are solving for x, we must isolate the variable. It is being divided by 2.3 and the inverse of division is multiplication. Multiply both sides by 2.3 liters.

$2.3 \ liters *1.2 \ mol/liter= \frac {x}{2.3 \ liters}* 2.3 \ liters\\2.3 *1.2 \ mol= x\\2.76 \ mol =x$

In a solution with a molarity of 1.2 and 2.3 liters of solution, there are 2.76 moles.

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3 years ago

How many moles are in 54g of sliver​

How many moles are in 54g of sliver