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jarptica [38.1K]

3 years ago

10

How is the sun the major source of energy in the water cycle?

1 answer:

adoni [48]3 years ago

6 0

Answer:

The sun is a major source of the water cycle because the solar energy drives the cycle by evaporating water from the oceans,lakes rivers and even soil

Explanation: I know this answer because I used to study it and I got an A on the quiz. I also know this is the right answer because its also in a book that u could look stuff like that in a book.

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What mass of iron(II) oxide must be used in the reaction given by the equation below to release 44.7 kJ? 6FeO(s) + O2(g) => 2

zavuch27 [327]

<u>Answer:</u> The mass of iron (II) oxide that must be used in the reaction is 30.37

<u>Explanation:</u>

The given chemical reaction follows:

$6FeO(s)+O_2(g)\rightarrow 2Fe_3O_4(s);\Delta H^o=-635kJ$

By Stoichiometry of the reaction:

When 635 kJ of energy is released, 6 moles of iron (II) oxide is reacted.

So, when 44.7 kJ of energy is released, $\frac{6}{635}\times 44.7=0.423mol$ of iron (II) oxide is reacted.

Now, calculating the mass of iron (II) oxide by using the equation:

$\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}$

Moles of iron (II) oxide = 0.423 moles

Molar mass of iron (II) oxide = 71.8 g/mol

Putting values in above equation, we get:

$0.423mol=\frac{\text{Mass of FeO}}{71.8g/mol}\\\\\text{Mass of FeO}=(0.423mol\times 71.8g/mol)=30.37g$

Hence, the mass of iron (II) oxide that must be used in the reaction is 30.37

7 0

4 years ago

Carl hits a baseball with a force of 8 N. The next batter, Stacy, hits it with 12 N of force. Which ball will accelerate faster?

Kisachek [45]

Answer:

The ball hit with 12 N

Explanation:

acceleration = Force/ mass

If masses of balls are the same, then more the force - more acceleration.

12N more than 8N,

so the ball that hits Stacy accelerate faster.

8 0

3 years ago

Read 2 more answers

What are the two types of bonding we have studied?

Fittoniya [83]

Covalent and ionic.

4 0

3 years ago

In a classroom which comparison would a teacher most likely use when comparing a mole

Natali [406]

Answer:

In a classroom, the comparison that a teacher would most likely use for describing a mole is jar of jellybeans and a gram of salt crystals.

4 0

3 years ago

What volume, in liters, does 128 grams of O2 occupy at STP?

Romashka [77]

Answer: 89.7 L

Explanation:

3 0

3 years ago