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iren2701 [21]
3 years ago
15

What is silica gel commonly used for? A. Absorbing moisture to protect goods from damage. B. As insulation in buildings. C. As a

lacquer on wood to make it water-resistant. D. A soft, flexible padding, such as on pen grips or mouse pads.
Chemistry
1 answer:
omeli [17]3 years ago
5 0

Answer:

A

Explanation:

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We can describe a positive energetic process as any process which increases the internal energy of the system.

A positive energetic reaction or process is often referred to as being Endothermic. This means that the system which is performing the process absorbs energy. Some examples include:

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etc

Therefore, we can confirm that a positive energetic process is one in which the system in question absorbs energy, thus increasing its internal energy.

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2 years ago
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3 years ago
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What is one characteristic of a sample of matter that indicates it is a pure substance?
victus00 [196]

Answer:d

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3 years ago
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Study the image and answer the question.
konstantin123 [22]
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7 0
2 years ago
How many parts per million of lead is found in 250 ml of water if there is 1.30g of lead in the water? 1ml=1g
SSSSS [86.1K]

Answer:

5200 ppm

Explanation:

As per the definition, parts per million of a contaminant is a measure of the amount of mass of contaminant present per million amount of the solution. It is denoted by ppm.

Given in the question,

Water = 250 ml = 250 g

Lead = 1.30 g

So,

ppm of Lead = \frac{Lead}{Water} \times 10^6 = \frac{1.30}{250} \times 10^6 = 5200 ppm

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6 0
3 years ago
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