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3 years ago

11

Explain what is wrong with this statement: “The density of a heavy bar of pure gold is greater than the density of a small ingot

of pure gold."

1 answer:

VladimirAG [237]3 years ago

5 0

Answer:

Both densities would be equal.

Explanation:

since both the bar and the ingot are pure gold, they would have the same density, despite the amount.

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What is the conjugate acid in the following equation:

yanalaym [24]

Answer:

HNO₂

Explanation:

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2 years ago

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3 years ago

How many grams of solute are needed to make 37.5 mL of 0.750 M KI solution? Round to three significant digits.

Marysya12 [62]

4.648 gm of solute is needed to make 37.5 mL of 0.750 M KI solution.

Solution:

We will start with the Molarity

$\text { Molarity }=\text { Mole of solute } \div \text { liter of solution }$

Also we know 1000 ml = 1 L

Therefore 37.5 ml by 1000ml we obtained 0.0375L

Equation for solving mole of solute

$\text { Mole of solute }=\text { Molarity } \times \text { Liters of solution }$

Now, multiply 0.750M by 0.0375

Substitute the known values in the above equation we get

$0.750 \times 0.0375=0.0281$

Also we know that Molar mass of KI is 166 g/mol

So divide the molar mass value to get the no of grams.

$0.028 \times 166=4.648$

So 4.648 gm of Solute is required for make 37.5 mL of 0.750 M KI solution.

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Answer:

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