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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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Determine the concentration of a solution made by dissolving 44.0 g of calcium chloride (CaCl2) in 0.30 L of solution. SHOW YOUR

ycow [4]

Answer:

[CaCl₂] = 1.32 M

Explanation:

We know the volume of solution → 0.30 L

We know the mass of solute → 44 g of CaCl₂

Let's convert the mass of solute to moles.

44 g . 1 mol / 110.98 g = 0.396 moles

Molarity (mol/L) → 0.396 mol / 0.3 L = 1.32 M

6 0

2 years ago

Pure water is 40 percent acid and 60 percent alkaline <br><br> True or false

Verdich [7]

The answer would be true

3 0

3 years ago

At what Celsius temperature does 0.750 mol of an ideal gas occupy a volume of 35.9 L at 114 kPa?

shepuryov [24]

382.85 Celsius is the temperature does 0.750 moles of an ideal gas occupy a volume of 35.9 L at 114 kPa.

Explanation:

Given data:

number of moles of the gas = 0.75 moles

volume of the gas = 35.9 liters

pressure of the gas = 114 KPa or 1.125 atm

R = 0.0821 latm/moleK

temperature of the gas T = ?

The equation used to calculate temperature from above data is ideal gas law equation.

the equation is :

PV = nRT

T = $\frac{PV}{nR}$

Putting the values in the above rewritten equation:

T = $\frac{1.125 X 35.9}{0.75 X 0.0821}$

T = 655.9 K

To convert kelvin into celsius, formula used is

K = 273.15+ C

putting the values in the equation

C = 656 - 273.15

= 382.85 Celsius

8 0

3 years ago

That's just the tip of the iceberg" is a popular expression you may have heard. It means that what you can see is only a small p

puteri [66]

Answer:

B 1.23 g/cc

Explanation:
For something to float on seawater, the density must be less than 1.03 g/mL. If the object sinks, the density is greater than 1.03 g/mL.

Let’s examine the answer choices. Keep in mind, the ice berg is mostly below the water level.

A. 0.88 g/cc
This is less than 1.03 g/cc, which would result in floating.

B. 1.23 g/cc
This is the best answer choice. The iceberg is mostly beneath the water, but some of it is exposed. The density is greater than 1.03 g/mL, but not so much greater that it would immediately sink.

C. 0.23 g/cc
This is less than 1.03 g/cc, which would produce floating.

D. 4.14 g/cc
This is much greater than 1.03 g/cc and the result would be sinking.

5 0

3 years ago

Now consider the quantum theory of conduction. At low temperatures, with scattering by lattice vibrations (phonons) not yet impo

nydimaria [60]

Answer:

jhjhh

Explanation:

jhhjhjh

4 0

2 years ago