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3 years ago

4. How many liters of solution would be needed in a 4.5M solution that contains 101.1g of KNO3?

1 answer:

4 0

This is someone else’s answer but it answers your question

Molarity is defined as the number of moles of solute dissolved in 1 L of solution.
KNO₃ - 2.0 M this means that 2.0 moles of KNO₃ are in 1 L of solution.
If 1 L contains - 2.0 moles
then 0.50 L contains - 2 mol/L x 0.50 L = 1 mol
Therefore 1 mol of KNO₃ is in 0.50 L solution.

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navik [9.2K]

Answer:

nutrients is the correct answer

Explanation:

if it is correct so please mark it as brainliest

6 0

3 years ago

Read 2 more answers

A sample from a local stream is found to have 3.0 ppm nitrates (in the form of sodium nitrate). How many grams of sodium nitrate

maw [93]

Answer:

0.01028 grams of sodium nitrate would there be in 2.5 L of the stream.

Explanation:

The ppm is the amount of solute (in milligrams) present in kilogram of a solvent. It is also known as parts-per million.

To calculate the ppm of oxygen in sea water, we use the equation:

$\text{ppm}=\frac{\text{Mass of solute}}{\text{Mass of solution}}\times 10^6$

Both the masses are in grams.

We are given:

The ppm concentration of nitrates = 3.0 ppm

Mass of nitrates = x

Mass of steam= m

Volume of steam = V = 2.5 L = 2500 ml ( 1 L = 1000 mL)

Density of steam = d = 1.0 g/mL

$M=d\times V=1.0 g/mL\times 2500 mL = 2500 g$

Putting values in above equation, we get:

$3.0=\frac{x}{2500 g}\times 10^6$

$x=0.0075 g$

Mass of nitrate = 0.0075 g

Moles of nitrate = $\frac{0.0075 g}{62 g/mol}=0.0001210 mol$

1 mole of nitrate ion is present in 1 mole of sodium nitrate.

Then 0.0001210 moles of nitrate will be present in :

$\frac{1}{1}\times 0.0001210 mol=0.0001210 mol$ of sodium nitrate;

Mass of 0.0001210 moles of sodium nitrate :

0.0001210 mol × 85 g/mol = 0.01028 g

0.01028 grams of sodium nitrate would there be in 2.5 L of the stream.

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4 years ago

What does iron (iii) hydroxide decomposes into

abruzzese [7]

Ferric hydroxide decomposes to ferric oxide (iron(iii) oxide or rust) and water.

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4 years ago

Foxplain the term hybridizatim

serg [7]

Answer:

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In chemistry, orbital hybridisation (or hybridization) is the concept of mixing atomic orbitals into new hybrid orbitals (with different energies, shapes, etc., than the component atomic orbitals) suitable for the pairing of electrons to form chemical bonds in valence bond theory.

Explanation:

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3 years ago

What is the composition of the nuclei modeled by these symbols? How many protons and neutrons?

gayaneshka [121]

There are six protons and eight neutrons present in the carbon atom as shown.

<h3>What is the nucleus?</h3>

The nucleus of an atom consists of its protons and its neutrons. The protons are positively charged while the neutrons have no charge.

From the symbol of the element as shown in the question, we can see that there are six protons and eight neutrons present.

Learn more about nucleus of atoms:brainly.com/question/10658589

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2 years ago