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3 years ago

How many grams of NaOH are contained in 500 mL of a 0.80 M sodium hydroxide solution?

Chemistry

1 answer:

4vir4ik [10]3 years ago

7 0

This is molarity: moles of solute/liters of solution. (Not molality)

1. Plug in what we know:

500 mL = 0.5 L

0.80 = moles/0.5

0.80*0.5 = moles

moles = 0.4

2. NaOH is given as 40 g/mole, so calculate the grams:

0.4 * 40 = 16 grams

answer: 16 grams

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3 years ago

Read 2 more answers

Which has a higher concentration of water molecules— 200 molecules of water, or a mixture of 300 molecules of water and 100 mole

Dovator [93]

<h3>Answer:</h3>

200 molecules of water has the highest concentration.

<h3>Explanation:</h3>

In chemistry, Concentration is defined as the amount of substance divided by the total volume of the constituents making the mixture.

<u>Case 1:</u> 200 Molecules of Water:

In this case we are having system which is made up of 200 purely water molecules and there is no other substance present in the system. Hence, for ease we can write it as,

Concentration = Molecules of Water ÷ Total Molecules of Mixture

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<u>Case 2:</u> 300 Molecules of Water and 100 Molecules of Food Coloring:

In this case we are having a mixture which is made up of 300 water molecules and 200 food coloring molecules. Hence, we can write it as,

Concentration = Molecules of Water ÷ Total Molecules of Mixture

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Therefore, it is proved that the concentration of pure 200 molecules of water is greater.

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4 years ago

A compound differs from an element in that a compound (1) is homogeneous, (2) has a definite composition, (3) has a definite mel

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A compound differs from an element in that it can be decomposed by a chemical reaction.

A compound, by definition, is made up of two or more elements that have been combined together through a chemical bond.

Thus, the chemical bond or bonds in a compound can be decomposed by a chemical reaction giving rise to the individual elements that make up the compound.

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2 years ago

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Answer:

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Explanation:

The nucleotide has hydrogen at it second carbon which means that it has deoxy pentose sugar which is written in small d as prefix.

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<u>So, the abbrevation of the molecule is : dCDP</u>

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4 years ago

A 3.664 g sample of a monoprotic acid was dissolved in water. It took 20.27 mL of a 0.1578 M NaOH solution to neutralize the aci

chubhunter [2.5K]

Answer:

Molar mass of monoprotic acid is 1145g/mol.

Explanation:

The reaction of a monoprotic acid (HX) with NaOH is:

HX + NaOH → H₂O + NaX

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If the neutralization of the acid spent 20.27mL of a 0.1578 M NaOH solution. Moles of NaOH are:

0.02027L × (0.1578mol / L) = <em>3.199x10⁻³ moles</em> NaOH ≡ moles HX.

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4 years ago