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2 years ago

How can you tell the difference between two clear liquids

Chemistry

1 answer:

posledela2 years ago

6 0

Answer:

To identify a pure liquid substance using the physical properties of solubility, density, and boiling point. The physical properties of a pure substance can be measured without changing the composition of the substance.

Explanation:

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how many moles of ammonium chloride are required for a complete reaction with 420 mol of calcium hydroxide

Oxana [17]

3 KOH + H3PO3 = K3PO4 + 3 H2O

moles KOH = 26.5 g/56.1 g/mol=0.472

moles K3PO4 = 0.472/3 =0.157

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2 years ago

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Masteriza [31]

Answer:

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2 years ago

Which chemical has the least solubility at 80 c

Vinil7 [7]

Answer:

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2 years ago

3. True or False: White light is a mixture of all colors of the visible

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it's true ....

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2 years ago

Read 2 more answers

A 35.0 ml sample of 0.225 m hbr was titrated with 42.3 ml of koh. What is the concentration of the koh?

Lemur [1.5K]

Answer:

The concentration of KOH is 0.186 M

Explanation:

First things first, we need too write out the balanced equation between HBr and KOH.

This is given as;

KOH (aq) + HBr (aq) → KBr (aq) + H2O (l)

From the reaction above, we can tell that it takes 1 mole of KOH to react with 1 mole of HBr.

We use the acid base formular in calculating unknown concentrations. This is given as;

$\frac{CaVa}{CbVb} = \frac{na}{nb}$

where;

Ca = Concentration of acid

Va = Volume of acid

Cb = Concentration of base

Vb = Volume of base

na = Number of moles of acid

nb = Number of moles of base

KOH is the base and HBr is acid.

Hence;

Ca = 0.225

Va = 35

Cb = ?

Vb = 42.3

na = 1

nb = 1

Making Cb subject of formular we have;

$Cb = \frac{CaVaNb}{VbNa}$

Cb = (0.225 * 35 * 1) / (42.3 * 1)

Cb = 0.186 M

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2 years ago