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3 years ago

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Calculate the percent dissociation of benzoic acid C6H5CO2H in a 2.4mM aqueous solution of the stuff. You may find some useful d

ata in the ALEKS Data resource

1 answer:

Musya8 [376]3 years ago

5 0

Answer:

34%

Explanation:

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Classify these bonds as ionic, polar covalent, or covalent, and give your reasons: (a) the SiSi bond in Cl3SiSiCl3, (b) the SiCl

Crank

Answer:1-1 equakls

Explanation:

5 0

3 years ago

For Brainliest: Someone please help thank you!

ser-zykov [4K]

Hi,

14H
15B
16J
17A

I hope this helps. If you’d like further explanation please let me know.

3 0

3 years ago

Read 2 more answers

The isotope 90_Sr has a half-life of 28.8 years. What is the activity, measured in atoms/second of a 50 mg sample of "Sr? (10 pt

blsea [12.9K]

Answer:

$2.5523\times 10^{11} atoms/seconds$ is the activity, measured in of a 50 mg sample of 90-Sr.

Explanation:

Half life of the 90-Sr , $t_{1/2}= 28.8 years$

Activity coefficient of the 90-Sr = $\lambda$

$\lambda =\frac{0.693}{28.8 years}=0.0240625 year^{-1}$

Mass of 90-Sr = 50 mg = 0.050 g

Molecular mass of 90-Sr = 90 g/mol

Moles of 90-Sr = $\frac{0.050 g}{90 g/mol}=0.0005555 mol$

Number of atom in 0.0005555 moles of 90-Sr:

$0.0005555 mol\times 6.022\times 10^{23} mol^{-1}=3.3455\times 10^{20} atoms$

$\lambda =0.0240625 year^{-1}=\frac{0.0240625}{3.154\times 10^7 s}=7.6292\times 10^{-10} s^{-1}$

1 year = $3.154\times 10^7 seconds$

Activity measured in atoms per seconds:

= Number of atoms × $\lambda$

$=3.3455\times 10^{20} atoms\times 7.6292\times 10^{-10} s^{-1}$

$=2.5523\times 10^{11} atoms/s$

5 0

3 years ago

How many total chlorine atoms are in the formula 4NaCl

postnew [5]

Answer:

4 Chlorine atons

Explanation:

4 molecules of NaCl

In NaCl we have only 1 atom of Cl

Therefore in 4 molecules, we have 4 atoms of Cl.

please mark brainliest

7 0

3 years ago

What is the electron configuration for thallium (iii) ion and charge?

svetlana [45]

The electronic configuration of thallium lll ion is 4F^14 5D^10 and it has a charge of +3.
Thallium is a chemical element with the chemical symbol TI. Its atomic number is 81 and the atomic mass is 204. The charge of +3 implies that, the element will give away three electrons during the course of chemical reaction in order to attain stability.

3 0

3 years ago