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Korvikt [17]
3 years ago
14

Which of these choices is a physical property that does not change when the size of the sample changes? mass,volume,density,comb

ustibility
Chemistry
1 answer:
Shalnov [3]3 years ago
6 0

Answer:

iweufweifiwbiepwbewibfpebfbiewfbwefwepbfwbefiwe

Explanation:

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If the volume of a cylinder is reduced from 8.0 liters to 4.0 liters, the pressure of the gas in the cylinder will change from 7
Elza [17]

Answer:

P₂ = 140 KPa

Explanation:

Given data:

Initial volume = 8.0 L

Final volume = 4.0 L

Initial pressure = 70 KPa

Final pressure = ?

Solution:

According to Boyle's law

P₁V₁ = P₂V₂

P₂ = P₁V₁  / V₂

P₂ = 70 KPa ×8.0 L/4.0 L

P₂ = 560 KPa .L / 4.0 L

P₂ = 140 KPa

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3 years ago
What mass of NH4NO3 would you need to make 250.0mL of a 0.78M solution?
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Answer:

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Explanation:

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Which of the following mixtures is not a colloid? gradpo!nt
Effectus [21]

Milk

Explanation:

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2 years ago
An object with more mass has more kinetic energy than an object with less mass, if both objects are moving ______.
olasank [31]
At the same velocity
6 0
3 years ago
Half-reaction for the reduction of liquid water to gaseous hydrogen in basic aqueous solution
Elena L [17]

Answer:

2H₂O (liq) + 2e⁻⇒ H₂ (g) + 2OH⁻ (aq)

Explanation:

In reduction-oxidation reaction two reactions take place, one is oxidation and the other is reduction reaction. In an oxidation reaction, there is the loss of an electron whereas in the reduction reaction there is gain of electron occus.

Reduction reaction occurs on the cathode, in a reduction of water there is gain of 2 electrons to gaseous hydrogen in basic aqueous solution. half-reaction for the reduction of liquid water to gaseous hydrogen in basic aqueous solution-

2H₂O (liq) + 2e⁻⇒ H₂ (g) + 2OH⁻ (aq)

5 0
4 years ago
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