Chemistry College

How many Cal2 formula units are present
in 5.164 g of Call2?

Answers

Answer 1

Answer:

1.06x10²² formula units

Explanation:

First we convert 5.164 g of CaI₂ into moles, using its molar mass:

5.164 g ÷ 293.887 g/mol = 0.0176 mol

Then we convert 0.0176 moles into formula units, using Avogadro's number, which relates the number of formula units present in 1 mol:

0.0176 mol * 6.023x10²³ FormulaUnits/mol = 1.06x10²² formula units

Related Questions

Which of these items is made up of one or more molecules?
Gold
Hydrogen
Salt
Neon

Answers

2 one hope it’s right

The item that is significantly made up of one or more molecules is hydrogen. Thus, the correct option for this question is B.

What is a Molecule?

A molecule may be defined as a group of one or more atoms that are held together by numerous chemical bonds. It is the smallest particle of a substance that has all sorts of physical and chemical properties of that substance.

Among the given options, gold and neon are the elements, while salt is a compound. Hydrogen is a gas of diatomic molecules bearing the formula H2. It is colorless, tasteless, odorless, non-toxic, and highly combustible. Hydrogen in its molecular form is more common.

A hydrogen molecule is one of the simplest possible molecules which significantly consists of two protons and two electrons. These protons and electrons are remarkably held together by electrostatic forces.

Therefore, the item that is significantly made up of one or more molecules is hydrogen. Thus, the correct option for this question is B.

To learn more about Molecules, refer to the link:

https://brainly.com/question/26044300

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How many grams of phosphorous is in the human skeleton if its average
weight is 11 kg and contains 58% of calcium phosphate (Ca3(PO4)2)?

Answers

I think 310.2 g/mol

hope this helps
3.10.2
I think most likely yes

You have a container which has the capacity to hold 3 L water. If it already has 2.25 L water in it, how much more water in mL can you still add to fill it completely?

Answers

3-2.25 = 0.75 L
0.75 L = 750 mL

What are two things that interact that determine if there is a phase change or not HELP

Answers

Answer:

phase change always has two phases in contact during the change. melting => solid & liquid; evaporation (boiling) => liquid & vapor. If only one phase is present, then phase change is not occurring. Also, when two phases are in contact, no temperature changes occur. Only the pure phase demonstrates temperature change when measured. Example, when ice is added to water, at thermal equilibrium (temp = 0°C) the water temp will not continue to change. Only when all the ice has melted will the water temperature demonstrate a measured temperature change.

Explanation:

B) Which of these is NEVER an example of freshwater? A) Pacific Ocean B) Okefenokee Swamp Mississippi River Lake Pontchartrain.
​

Answers

Answer:

Lake pontchartrain

Explanation:

A hot piece of copper was dropped into 155 g of water at 23.6 °C and 2,100 J of energy was transferred to the water. What is the final temperature of the water?​

Answers

Answer:

26.8 °C

Explanation:

Step 1: Given and required data

Mass of water (m): 155 gEnergy transferred to the water (Q): 2100 JInitial temperature of the water (T₂): 23.6 °CFinal temperature of the water (T₁): ? Specific heat of water (c): 4.184 J/g.°C

Step 2: Calculate the final temperature of the water

We will use the following expression.

Q = c × m × (T₂ - T₁)

T₂ = 2100 J/(4.184 J/g.°C) × 155 g + 23.6 °C = 26.8 °C

The answer is When The final temperature we (reached by both copper and also water) is 38.7 °C.  This method can also be used to determine other quantities, also it helps a lot such as the specific heat of an unknown metal. Step 1: when Given and required data is:When The Mass of water (m): 155 gWhen the Energy transferred to the water is (Q): 2100 JAfter that initial temperature of the water is (T₂): 23.6 °CNow when the Final temperature of the water is (T₁):?when The Specific heat of water (c): 4.184 J/g. °CStep 2: Now Calculate the final temperature of the water is:Now We will use the following expression is:Then follow this formula Q = c × m × (T₂ - T₁)

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CuCl2(aq) + Na3PO4(aq) =>?
Net ionic equation

Answers

If you are balancing the equation, your final one should be

Cu3(PO4)2 +6 NaCl.
The reaction is a double replacement reaction

What is the composition of a universal indicator?

Answers

Answer:

The main universal indicator is in the form of a solution and are thymol blue , methyl red , bromothymol blue and phenolphthalein this mixture is important because each component loses or gains protons depending upon the acidity of the solution being tested .

maybe this mighr help u

In which atmospheric layer is the ozone layer? O stratosphere o thermosphere O mesosphere troposphere​

Answers

Answer:

The stratosphere

Explanation:

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