HELP ASAP I WILL GIVE BRAINLIST! How many moles of Ca(OH)2 are present in 370.47 grams of Ca(OH)2? (5 points)

2

3

5

6

Answers

Answer 1

Answer:

c.5

Explanation:

moles= mass/molar mass

molar mass of Ca(OH)2=74.092gmol-1

moles=370.47/74.092

moles =5

Answer 2

Considering the definition of molar mass, 5 moles of Ca(OH)₂ are present in 370.47 grams of Ca(OH)₂.

Definition of molar mass

The molar mass of substance is a property defined as its mass per unit quantity of substance, in other words, molar mass is the amount of mass that a substance contains in one mole.

The molar mass of a compound (also called Mass or Molecular Weight) is the sum of the molar mass of the elements that form it (whose value is found in the periodic table) multiplied by the number of times they appear in the compound.

Molar mass of Ca(OH)₂

In this case, you know the molar mass of the elements is:

Ca= 40 g/mole

O= 16 g/mole

H= 1 g/mole

So, the molar mass of the compound Ca(OH)₂ is calculated as:

Ca(OH)₂= 40 g/mole + 2× (16 g/mole 1 g/mole)

Solving:

Ca(OH)₂= 74 g/mole

Moles of 370.47 grams of Ca(OH)₂

Next, you can apply the following rule of three: If by definition of molar mass 74 grams of the compound are contained in 1 mole, 370.47 grams of the compound are contained in how many moles?

[tex]amount of moles=\frac{370.47 gramsx1 mole}{74 grams}[/tex]

amount of moles≅ 5 moles

Finally, 5 moles of Ca(OH)₂ are present in 370.47 grams of Ca(OH)₂.

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Answer: The statements that correctly describe the structure of pyruvate dehydrogenase (PDH) complex are:

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Explanation:

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Answer:

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Explanation:

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Answer:

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Explanation:

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Explanation:

i got the answer correct on my work

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Answers

Answer:

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Explanation:

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Answers

Answer:

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Answer:

The diagram below represents some stages in the life cycle of humans. The numbers in the diagram represent various processes in the cycle.

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Answers

Answer:

3.) How do you know when the first day of the menstrual cycle is? What happens?

A.) first day of menstrual bleeding is considered Day 1 of the cycle.

4.) What is the function of FSH?

A.) FSH helps control the menstrual cycle and stimulates the growth of eggs in the ovaries.

-TheUnknownScientist

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Explanation:

A balloon holds 50.0 mL of nitrogen at 25° C and a pressure of 736 mm Hg. According to Boyle's Law, answer the following questions for 2 points each: What will be the effect on the pressure inside the balloon if the volume is decreased to 25 mL? Explain how this would demonstrate Boyle's Law. Explain Boyle's Law in terms of the kinetic energy of molecule

Answers

Answer:

The correct answer is -  would be double which is 1472 mm Hg.

Explanation:

According to Boyle's law that says the relationship between volume and pressure of a gas at constant pressure shows an inverse relationship which means if volume will increase then pressure will be decrease and vice versa.

P1V1 = P2V2 .........Boyle's law

Given: P1 = 736 mm Hg

          V1 = 50 mL

P2 = ?

V2 = 25 mL

Solution:

from the Boyle's law

(P1V1)/V2 = P2

736×50/25 = P2

P2 = 1472

So the decreasing the volume to half increases the pressure double. It proves it follows Boyle's law

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