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Mekhanik [1.2K]
2 years ago
14

Substances A and B are combined. When combined, substance A, which is a black solid, sinks to the bottom of substance B which is

a clear liquid. Based on this situation, which of the following is true.
A. Substances A and B formed a mixture
B. It is impossible to tell without more information
C. Substances A and B formed a compound
D. Substances A and B formed a new element
Chemistry
2 answers:
Makovka662 [10]2 years ago
4 0

Answer:

c thats just what i do

Explanation:

Kamila [148]2 years ago
4 0
I think it would be A
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Furkat [3]

Answer:

250 mL (total solution)  = 104 mL (stock solution)  + 146 mL (water)

Explanation:

Data Given

M1 = 6.00 M

M2 = 2.5 M

V1 = 250 mL

V2 = ?

Solution:

As the chemist needs to prepare 250 mL of solution from 6.00 M ammonium hydroxide solution to prepare a 2.50 M aqueous solution of ammonium hydroxide.

Now

first he have to determine the amount of ammonium hydroxide solution that will be taken from6.00 M ammonium hydroxide solution

For this Purpose we use the following formula

                    M1V1=M2V2

Put values from given data in the formula

                   6 x V1 = 2.5 x 250

Rearrange the equation

                   V1 = 2.5 x 250 /6

                    V1 = 104 mL

So 104 mL is the volume of the solution which we have to take from the 6.00 M ammonium hydroxide solution to prepare 2.5 M  aqueous solution of ammonium hydroxide

But we have to prepare 250 mL of the solution.

so the chemist will take 104 mL from 6.00 M ammonium hydroxide solution and have to add 146 mL water to make 250 mL of new solution.

in this question you have to tell about the amount of water that is 146 mL

250 mL (total solution)  = 104 mL (stock solution)  + 146 mL (water)

7 0
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Which property do metalloids share with non metals?
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their ability to conduct heat and electricity.

Explanation:

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How many moles of aluminum are needed to make 9 moles of molecular hydrogen? given the reaction: 2 al + 6 hcl → 2 alcl3 + 3h2 6
sergiy2304 [10]
1) Chemical equation

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2) molar ratios

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4) Solve for x

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Explanation:

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