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Phantasy [73]
3 years ago
6

Which of the following statements is true?

Biology
2 answers:
vredina [299]3 years ago
8 0

The awnser is B my good sir

kozerog [31]3 years ago
6 0

Hi There!

Question - Which of the following statements is true?

Answer - B. Igneous rocks form from the cooling and crystallization of magma.

Why - This is the only statements thats true, because igneous rocks are formed from the cooling of magma.

Hope This Helps :)

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3 years ago
Akira creates a reaction without a catalyst, then repeats the reaction with a catalyst.
Romashka [77]

Answer:

Akira turns in a written lab report to his science teacher. ... Akira writes in his notes that adding a catalyst sped up the chemical reaction because the catalyst lowered the activation energy needed to start the reaction.

6 0
3 years ago
How is the relationship between eons and eras different than the relationship between hours and minutes?
xz_007 [3.2K]

Answer:

Explanation:

Eras are made up of eons, but hours are made up of minutes. Eons are made up of eras, but minutes are made up of hours. Eras are not even divisions of time, while minutes are. Eons are even divisions of time, while hours are not.

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3 years ago
What will be the theoretcal yield of tungsten(s) ,W, if 45.0 g of WO3 combines as completely as possible with 1.50 g of H2? WO3(
7nadin3 [17]

Answer:

Theoretical yield of tungsten produced = 35.6836915592  ≈ 35. 68 g

Explanation:

The chemical equation can be expressed as follows;

WO3 (s) + 3H2(g) → W(s) + 3 H20(g)

Note that the equation is already balanced.

Molecular Mass of WO3= 183.84 + 15.999 × 3 = 183.84 + 47.997  = 231.837 g

From the equation 1 mole of WO3 reacts with 3 mole of hydrogen molecule.

Molecular mass of tungsten(W) = 183.84 g

1 mole of tungsten was produced from the chemical equation.

WO3 (s) + 3H2(g) → W(s) + 3 H20(g)

From the equation,

231. 837 g of WO3 produces 183.84 g of tungsten

45.0 g of WO3 will produce ?

grams of tungsten produced = 183.84 × 45 /231.837

grams of tungsten produced = 8272.8 /231.837

Theoretical yield of tungsten produced = 35.6836915592  ≈ 35. 68 g

 

7 0
3 years ago
What could be one possible effect on human health due to an oil spill?
mojhsa [17]

Answer: C. Oil from the oil spill could enter aquatic organisms, like fish, which could make people sick.

Explanation:

Oil spill in water body can be caused by the industrial oil discharge, emission of vehicle oil in water body.

The oil may contain toxic chemicals which could be consumed by the fishes or other aquatic organisms. The fishes and other edible aquatic organisms if consumed by human beings can make people unhealthy or sick.

7 0
3 years ago
Read 2 more answers
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