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2 years ago

Which of the following is a consequence of humans using fossil fuels?

Chemistry

1 answer:

julia-pushkina [17]2 years ago

4 0

I think it’s A, because all of these are related to fossil fuel somehow.

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True or False Photosynthesis and Cell Respiration are opposite reactions. Photosynthesis provides the molecules needed for cell

Bezzdna [24]

True but in more depth they both have the some same qualities in function but provide for each other when one makes oxygen, H2O, and energy and cellular respiration makes CO2 and glucose

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2 years ago

Read 2 more answers

The actual yield of a product in a reaction was measured as 4.20 g. If the theoretical yield of the product for the reaction is

Dmitry_Shevchenko [17]

Answer:

Explanation:

remember the equation percentage yield = actual/ theoretical yield as

4.20/4.88 x 100

86.065 so 86.1.

hope this make sense:)

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2 years ago

What causes fireworks

vfiekz [6]

Answer:

Explanation:

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3 years ago

Some compounds are better known by their common names than by their systematic chemical names. Give the chemical formulas of the

kondaur [170]

Explanation:

(a) Dry ice is solid carbon dioxide and its chemical formula is solid $CO_{2}$ .

(b) Sodium chloride is commonly known as salt in daily life. Hence, chemical formula of salt is NaCl.

(c) Laughing gas is also known as dinitrogen monoxide. Hence, its chemical formula is $N_{2}O$ .

(d) Marble (chalk limestone) is chemically known as calcium carbonate. Hence, its chemical formula is $CaCO_{3}$ .

(e) Baking soda is chemically known as sodium bicarbonate. Hence, its chemical formula is $NaHCO_{3}$ .

(f) Ammonia has a chemical formula as $NH_{3}$ .

(g) Water has a chemical formula as $H_{2}O$ .

(h) Milk of magnesia is a base and it is chemically known as magnesium hydroxide. Its chemical formula is $Mg(OH)_{2}$ .

(i) Epsom salt is most often found as heptahydrate of sulfate mineral epsomite. Its chemical formula is usually $MgSO_{4}.7H_{2}O$ . If not present as a heptahydrate then its chemical formula is $MgSO_{4}.(H_{2}O)_{x}$ where, value of x can be equal to 0 to 7.

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3 years ago

What is the main reason that Absolute Zero has not been achieved under laboratory conditions?

Alexeev081 [22]

Answer:

The reason is because Charle's Law which states that volume is directly proportional to temperature. So, for the temperature to be absolute zero, there would need to be no volume. It's Impossible.

Explanation:

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3 years ago