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finlep [7]
3 years ago
10

A student drops some metal paper clips in a box of sand. The student uses a magnet to separate the metal paper clips from the sa

nd. The reason this works is that the sand and paper clips together are a
A) mixture.
B) element.
C) compound.
D) substance.
Chemistry
1 answer:
Dmitriy789 [7]3 years ago
3 0

Answer:

compound

Explanation:

because now there are one together

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Triplet oxygen

Explanation:

Based on my research it is called Triplet Oxygen, if this is wrong I'm sorry

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Which of the following metals will react with water to produce a metal hydroxide and hydrogen gas? (2 points)
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atmospheric pressure at elevations of 8000 feet averages about 0.72 atmospheres. Would a cabin pressurized at 500 mm hg meet fed
NeTakaya

Answer:

Yes, but it must be kept at that value and do not let it to decrease more.

Explanation:

Hello.

In this case, in order to substantiate whether the cabin meet the federal standards, we need to convert the 500 mmHg to atm and compare the result with 0.72 atm by knowing that 1 atm equals 760 mmHg:

500mmHg*\frac{1atm}{760mmHg} \\\\=0.66atm

Thus, since 0.66 atm is 0.06 atm away from the federal standard we can infer that it may meet the federal standard, however, it would not be recommended to let the pressure decrease more than that.

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Why doesn't all soil look and feel the same? List 3 reasons
Katen [24]

Answer:

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How well can you apply Charles’s law to this sample of gas that experiences changes in pressure and volume? Assume that pressure
Phoenix [80]

Answer:

As temperature increases the volume of given amount of gas increases while pressure and number of moles remain constant.

Explanation:

According to the charle's law,

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Mathematical expression:

V ∝ T

V = KT

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When temperature changes from T₁ to T₂ and volume changes from V₁ to V₂.

V₁/T₁ = K        V₂/T₂ = K

or

V₁/T₁  = V₂/T₂

Thus, the ratio of volume and temperature remain constant for constant amount of gas at constant pressure.

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