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3 years ago

Which of these statements best describes the relationship between matter, pure substances, and mixtures?

1 answer:

3 0

The answer you are looking for is the second option, "<span>Matter can be divided into two groups: pure substances and mixtures."

A pure substance can describe a pure element or chemically bonded elements. A pure substance cannot be broken down into further substances. An example of these would be Fe (iron) or O2 (oxygen).

A mixture is a structure made from physically combining different non-bonded substances. An example of a mixture is blood.

Both pure substances and mixtures are types of matter.</span>

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A student determines the iron(III) content of a solution by first precipitating it as iron(III) hydroxide, and then decomposing

Semmy [17]

Answer:

3.3535 g

Explanation:

Considering:

$Molarity=\frac{Moles\ of\ solute}{Volume\ of\ the\ solution}$

Or,

$Moles =Molarity \times {Volume\ of\ the\ solution}$

Given :

For iron(III) nitrate :

Molarity = 0.404 M

Volume = 52.0 mL

The conversion of mL to L is shown below:

1 mL = 10⁻³ L

Thus, volume = 52.0×10⁻³ L

Thus, moles of iron(III) nitrate :

$Moles=0.404 \times {52.0\times 10^{-3}}\ moles$

Moles of iron(III) nitrate = 0.021 moles

1 mole of iron(III) nitrate forms 1 mole of iron(III) hydroxide which further forms 1 mole of iron(III) oxide.

Thus, moles of iron(III) oxide formed from 0.021 moles of iron(III) nitrate = 0.021 moles

Also, molar mass of iron(III) oxide = 159.69 g/mol

So, mass of iron(III) oxide = 0.021 moles × 159.69 g/mol = 3.3535 g

6 0

3 years ago

Imagine a ringingbell sat inside a sedet sans ja. Once all the arisrenoves and a vecums

kotykmax [81]

Answer:

what language is this is this english?

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3 years ago

The body is a system of interacting subsystems composed of a group of specialized cells and tissues because....

marishachu [46]

In multicellular organisms, the body is a system of multiple interacting subsystems. These subsystems are groups of cells that work together to form tissues and organs that are specialized for particular body functions.

Hope This Helps! Have A Nice Day!

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3 years ago

To double-check a chemical in lab before using it, sniff near the opening of the container, true or false?

Bezzdna [24]

The answers is false because you do not want to inhale unknown chemicals

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3 years ago

How does the law of conservation of matter apply to chemical equations?

Tasya [4]

Answer: option D.

The total number of atoms of each element on both sides of the

equation must be the same.

Explanation:

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4 years ago