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olga nikolaevna [1]

2 years ago

15

Please help I'm begging you I'll give so much brainliest

1 answer:

slava [35]2 years ago

6 0

H2O (water) has 2 hydrogen atoms and 1 oxygen atom.

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Two different bromide solutions are mixed with each other: Solution 1 is an aqueous solution of 4.85 g aluminum bromidein 150. m

erma4kov [3.2K]

Answer:

M=0.380 M.

Explanation:

Hello there!

In this case, given those two solutions of aluminum bromide and zinc bromide, it is firstly necessary to compute the moles of bromide ions in each solution as shown below:

$n_{Br^-}^{in\ AlBr_3}=4.85 gAlBr_3*\frac{1molAlBr_3}{266.69gAlBr_3}*\frac{3molBr^-}{1molAlBr_3} =0.05456molBr^-\\\\n_{Br^-}^{in\ ZnBr_2}=7.75gZnBr_2*\frac{1molZnBr_2}{225.22gZnBr_2}*\frac{2molBr^-}{1molZnBr_2} =0.06882molBr^-$

Now, we compute the total moles of bromide:

$n_{Br^-}=0.05456mol+0.06882mol\\\\n_{Br^-}=0.12338mol$

Then, the total volume in liters:

$150mL+175mL=325mL*\frac{1L}{1000mL} \\\\=0.325L$

Therefore, the concentration of total bromide is:

$M=\frac{0.12338mol}{0.325L}\\\\M=0.380M$

Best regards!

8 0

2 years ago

Name two elements whose outer energy levels are complete with two electrons

cluponka [151]

Answer:

ppsuck

Explanation:

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4 0

3 years ago

How many atoms are in 1.0 formula units of magnesium acetate?

Ray Of Light [21]

Answer:

15

Explanation:

Magnesium Acetate Mg(C2H3O2)2

Number of atoms:

Carbon = 4

Hydrogen = 6

Magnesium = 1

Oxygen = 4

Total = 15

7 0

2 years ago

Q.2. Which of the following statements is true of second ionization energies?

Ratling [72]

Answer:

a) That of Al is higher than that of Mg because Mg wants to lose the second electron, so it is easier to take the second electron away

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2 years ago

What is the main difference between protons and neutrons?

kykrilka [37]

Answer:

Protons have a much larger volume than neutrons.

3 0

3 years ago

Read 2 more answers