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MAVERICK [17]
3 years ago
15

List and describe two differences between pure substances and mixtures. Check all that apply. Check all that apply. The composit

ion of a pure substance depends on the source, but the composition of a mixture doesn't depend on the source. The composition of a pure substance is always the same, regardless of the source, but the composition of a mixture can vary. The state of a pure substance is always the same, but the state of a mixture can vary. Mixtures can be separated into their components only by chemical changes; some pure substances can be separated into components by physical change. Mixtures can be separated into their components by physical changes; some pure substances can be separated into components by chemical change.
Chemistry
1 answer:
34kurt3 years ago
3 0

Answer:

The composition of a pure substance is always the same, regardless of the source, but the composition of a mixture can vary.

Mixtures can be separated into their components by physical changes; some pure substances can be separated into components by chemical change.

Explanation:

A chemically pure substance has a well defined and constant composition. The composition of a chemically pure substance remains the same irrespective of its source. Also, the components of a chemically pure substance may be separated by chemical changes.

Mixtures have a variable composition depending on their  respective sources. The composition of a mixture varies with the source of the mixture and mixtures are separated by physical processes.

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Which statement is accurate for these two sub-atomic particles.
krek1111 [17]

Answer:

The correct answer is "They are both located in the nucleus".

Explanation:

I had to look for the problem and found that the particles are a Proton and a Neutron.

The atomic nucleus is the central section of an atom, is positively charged and has almost the entire mass of the atom.

The nucleus is formed by protons and neutrons, which are held together by strong nuclear interaction, which allows the nucleus to be stable.

Have a nice day!

8 0
4 years ago
Does sanitizer conduct electricity
lianna [129]

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Yes, since it has alcohol, it conducts electricity.

3 0
3 years ago
Which element is larger lithium or bromine
Lera25 [3.4K]
Lithium i think!!
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5 0
2 years ago
Which is the correctly balanced chemical equation for the reaction of KOH and H2SO4?
Ksenya-84 [330]

Answer:

3) 2KOH + H2SO4 → K2SO4 + 2H2O

Explanation:

The balanced chemical equation for the reaction of KOH and H2SO4 is,

→ 2KOH + H2SO4 → K2SO4 + 2H2O

Hence, option (3) is the correct answer.

5 0
3 years ago
At a certain temperature, 0.660 mol SO 3 is placed in a 4.00 L container. 2 SO 3 ( g ) − ⇀ ↽ − 2 SO 2 ( g ) + O 2 ( g ) At equil
svet-max [94.6K]

Answer:

Kc=6.875x10^{-3}

Explanation:

Hello,

In this case, for the given chemical reaction at equilibrium:

2 SO_3 ( g ) \rightleftharpoons 2 SO_ 2 ( g ) + O_ 2 ( g )

The initial concentration of sulfur trioxide is:

[SO_3]_0=\frac{0.660mol}{4.00L}=0.165M

Hence, the law of mass action to compute Kc results:

Kc=\frac{[SO_2]^2[O_2]}{[SO_3]^2}

In such a way, in terms of the change x due to the reaction extent, by using the ICE method, it is modified as:

Kc=\frac{(2x)^2*x}{(0.165-2x)^2}

In that case, as at equilibrium 0.11 moles of oxygen are present, x equals:

x=[O_2]=\frac{0.110mol}{4.00L}=0.0275M

Therefore, the equilibrium constant finally turns out:

Kc=\frac{(2*0.0275)^2*0.0275}{(0.165-2*0.0275)^2} \\\\Kc=6.875x10^{-3}

Best regards.

6 0
3 years ago
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