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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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the buret is dirty and drops of NaOH cling to the side walls of the buret as it drained. How does this affect the result for NaO

kykrilka [37]

Since this has to do with titration, the measured volume of NaOH used would be less than the actual volume used because some of the unused NaOH would cling to the sides of the buret and therefore wouldn't factor into the measurement

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4 years ago

which two conditions can limit the usefulness of the kinetic-molecular theory in describing gas behavior

alex41 [277]

Answer:

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Explanation:

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3 years ago

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a_sh-v [17]

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3 years ago

Homogeneous mixtures

galina1969 [7]

Explanation:

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3 years ago

Read 2 more answers

If 20.00 mL of a 0.0090 M solution of (NH4)2S is mixed with 120.00 mL of a

ella [17]

Answer:

No, no precipitate is formed.

Explanation:

Hello there!

In this case, since the reaction between ammonium sulfide and aluminum nitrate is:

$3(NH_4)_2S(aq)+2Al(NO_3)_3(aq)\rightarrow Al_2S_3(s)+6NH_4NO_3(aq)$

In such a way, we can calculate the concentration of aluminum and sulfide ions in the solution as shown below, and considering that the final total volume is 140.00 mL:

$[Al^3^+]=\frac{120.00mL*0.0082M}{140.00mL}=0.00703M$

$[S^2^-]=\frac{20.00mL*0.0090M}{140.00mL}=0.00129M$

In such a way, we can calculate the precipitation quotient by:

$Q=[Al^3^+]^2[S^2^-]^3=(0.00703)^2(0.00129)^3=1.05x10^{-13}$

Which is smaller than Ksp and meaning that the precipitation does not occur.

Regards!

7 0

3 years ago