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mart [117]
3 years ago
5

a substance that is found naturally in the Earth and that does not contain plant or animal matter. Gold is an example.

Chemistry
1 answer:
disa [49]3 years ago
6 0

Answer:

COPPER , SILVER, GRAPHITE, WATER , POTASSIUM , LEAD AND .........ETC

Explanation:

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Answer:

The warm air over the land will rise throughout the day, causing low pressure at the surface. Over the water, high surface pressure will form because of the colder air. ... The wind will blow from the higher pressure over the water to lower pressure over the land causing the sea breeze.

Explanation:

<h2><u>PLZ MARK AS BRAINLEST!!!</u></h2>
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How many moles of chlorine are used up in a reaction that produces 0.35kg of BCl3
maw [93]

4.48 mol Cl2. A reaction that produces 0.35 kg of BCl3 will use 4.48 mol of Cl2.

(a) The <em>balanced chemical equation </em>is

2B + 3Cl2 → 2BCl3

(b) Convert kilograms of BCl3 to moles of BCl3

MM: B = 10.81; Cl = 35.45; BCl3 = 117.16

Moles of BCl3 = 350 g BCl3 x (1 mol BCl3/117.16 g BCl3) = 2.987 mol BCl3

(c) Use the <em>molar ratio</em> of Cl2:BCl3 to calculate the moles of Cl2.

Moles of Cl2 = 2.987 mol BCl3 x (3 mol Cl2/2 mol BCl3) = 4.48 mol Cl2

4 0
3 years ago
A boy jumps into a cold swimming pool and his body temperature goes down. His muscles, blood vessels, and nervous system work to
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Answer:

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4 0
3 years ago
Type the correct answer in the box.
tatiyna

the mass of  1  mole of phosphorus atoms is approximately  30 g

hope this helps :)

4 0
3 years ago
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C is a social question.
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3 years ago
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