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3 years ago

Which of the following is the best name for CaF2?

Chemistry

2 answers:

Vladimir79 [104]3 years ago

8 0

Calcium Flouride. It's an ionic bond. Cation + anion with the suffix -ide

Oxana [17]3 years ago

8 0

Answer : The correct option is Calcium difluoride.

Explanation :

<u>Naming of ionic compound :</u>

Name the cation first and then anion.

Name the anion by using suffix (-ide).

The net charge in the ionic compound must be zero.

As compound contains one calcium atom and 2 fluorine atoms.

Therefore, the name of ionic compound $CaF_2$ is Calcium difluoride.

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Furkat [3]

The compositions I hope I helped

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3 years ago

What volume does 2.25g of nitrogen gas, N2, occupy at 273 Celsius and 1.02 atm

kotykmax [81]

<h2><u>Answer:</u></h2>

0.126 Liters

<h2><u>Explanation:</u></h2>

V = mRT / mmP

First, convert the 2.25g of Nitrogen gas into moles. (m in the equation above)

2.25g x 1 mole / 28.0g = 0.08036 moles = m

28.0g = mm

Next, convert the 273 Celsius into Kelvin. (T in the equation above)

273 Celsius + 273.15 = 546.15K = T

R = 0.08206L*atm/mol*K

(Quick Note: The R changes depending on the Pressure Unit so do not use this number every time.)

Now, plug everything into the equation.

V = (0.08036)(0.08206)(546.15)/(28.0)(1.02)

V = 0.126 L

5 0

3 years ago

Briefly explain what happens to an organism during the process of petrification. Write your answer in the essay box

Aleksandr [31]

Answer:

YOU BETTER GIVE THEM BRAINLEIST ↑↑↑↑↑

Explanation:

4 0

3 years ago

How many moles in 4.93 x 10E23 atoms of silver?

leva [86]

<h3>Answer:</h3>

0.819 mol Ag

<h3>General Formulas and Concepts:</h3>

<u>Math</u>

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right<u> </u>

<u>Chemistry</u>

<u>Atomic Structure</u>

Avogadro's Number - 6.022 × 10²³ atoms, molecules, formula units, etc.

<u>Stoichiometry</u>

Using Dimensional Analysis

<h3>Explanation:</h3>

<u>Step 1: Define</u>

4.93 × 10²³ atoms Ag

<u>Step 2: Identify Conversions</u>

Avogadro's Number

<u>Step 3: Convert</u>

Set up: $\displaystyle 4.93 \cdot 10^{23} \ atoms \ Ag(\frac{1 \ mol \ Ag}{6.022 \cdot 10^{23} \ atoms \ Ag})$
Divide: $\displaystyle 0.818665 \ mol \ Ag$

<u>Step 4: Check</u>

<em>Follow sig fig rules and round. We are given 3 sig figs.</em>

0.818665 mol Ag ≈ 0.819 mol Ag

8 0

3 years ago

An ionic compound has a very negative heat of solution in water. Would you expect it to be soluble or insoluble in water?.

ddd [48]

Answer:

It will be Insolube in water

8 0

3 years ago