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4 years ago

How does the property of density help to identify substances?

Chemistry

2 answers:

aev [14]4 years ago

6 0

Answer:

it can identify an unknown substance by measuring its density and comparing your result to a list of known densities.

Mashutka [201]4 years ago

4 0

Answer:

Density can be useful in identifying substances. It is also a convenient property because it provides a link (or conversion factor) between the mass and the volume of a substance. Mass and volume are extensive (or extrinsic) properties of matter - they depend on amount.

Explanation:

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In which container are the particles of water moving fastest? In which container are the particles moving slowest

Ghella [55]

Answer:

Particles move faster the farther they are apart, so the container with the most spread out particles.

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3 years ago

1. What causes frost to form on the outside of a cold container.

Kamila [148]

Answer:

condensation

Explanation:

Frost forms when an outside surface cools past the dew point. The dew point is the point where the air gets so cold, the water vapor in the atmosphere turns into liquid. This liquid freezes. If it gets cold enough, little bits of ice, or frost, form

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3 years ago

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nataly862011 [7]

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4 years ago

Calculate the mass of iron(III) oxide that contains a million iron atoms. Be sure your answer has a unit symbol if necessary, an

KiRa [710]

Answer: The mass of iron (II) oxide that contains a million iron atoms is $2.6\times 10^{-17}g$

Explanation:

We are given:

Number of iron atoms = A million = $1.0\times 10^6$

The chemical formula of the given compound is $Fe_2O_3$

It is formed by the combination of 2 iron atoms and 3 oxygen atoms.

According to mole concept:

1 mole of a compound contains $6.022\times 10^{23}$ number of particles

1 mole of iron (II) oxide will contain = $(2\times 6.022\times 10^{23})=1.2044\times 10^{24}$ number of iron atoms

We know that:

Molar mass of iron (II) oxide = 159.7 g/mol

Applying unitary method:

For $1.2044\times 10^{24}$ number of iron atoms, the mass of iron (II) oxide is 159.7 g

So, for $1.0\times 10^6$ number of iron atoms, the mass of iron (II) oxide will be $\frac{159.7}{1.2044\times 10^{24}}\times 1.0\times 10^6=2.6\times 10^{-17}g$

Hence, the mass of iron (II) oxide that contains a million iron atoms is $2.6\times 10^{-17}g$

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4 years ago

True or false: Some parasites have complex life cycles where they live in different species of hosts at different stages

GrogVix [38]

Answer:

true

Explanation:

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3 years ago

Read 2 more answers