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Jobisdone [24]
3 years ago
9

Please cheek my answers please i beg you!!!!

Chemistry
1 answer:
Norma-Jean [14]3 years ago
7 0
1 an element
2  i believe its element or that one u choose
3 suspension ur right
4 compounds are random combinations of elements5 colloid
6 f<span>ixed composition
7 i believe its C solid gold coin
8 </span><span>False
9 False
10 True

Hope this helped


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kirza4 [7]

Answer:

mook passes between the earth and sun

4 0
2 years ago
What element in magma is most abundant
pishuonlain [190]
Oxygen :) hope it helped
6 0
3 years ago
Read 2 more answers
How many milliliters of 0.2560 M KCl solution will contain 20.00 g of KCl?
lutik1710 [3]

Answer:

1048 mL

Explanation:

Step 1: Given data

  • Concentration of the solution: 0.2560 M
  • Mass of KCl (solute): 20.00 g

Step 2: Calculate the moles corresponding to 20.00 g of KCl

The molar mass of KCl is 74.55 g/mol.

20.00 g × 1 mol/74.55 g = 0.2683 mol

Step 3: Calculate the volume of the solution

Molarity is equal to moles of solute divided by liters of solution.

M = moles of solute / volume of solution

volume of solution = moles of solute / M

volume of solution = 0.2683 mol / (0.2560 mol/L)

volume of solution = 1.048 L = 1048 mL

3 0
3 years ago
Determine the value of the equilibrium constant (report your answer to three significant figures) for the following reaction if
Debora [2.8K]

Answer:

6.25e-6 is the value of the equilibrium constant

Explanation:

we have this equation

PbBr(s) ----- Pb^{2+}(aq)  + 2Br(aq)

When at a state of equilibrium,

we have the concentration of Pb^2+ to be 0.01

we have the concentration of Br^- to be 0.025

the equilibrium constant concentration of both pure solids and liquid s are said to be equal to 1

[PbBR2] = 1

such tht

Keq = [Pb^2+] x [Br-]^2

we already know the values of these from the above.

0.01x0.025^2

= 0.01 x 0.000625

= 0.00000625

= 6.25 x 10^-6

= 6.25e^-6

5 0
3 years ago
What chemicals has 7 h 2 c and 1 n
inn [45]

Explanation:

Dimethylamine

Dimethylamine is a colorless liquid or gas with a fishy or Ammonia-like odor. It is used as a solvent and in making rubber, textiles, drugs, and other chemicals.

8 0
3 years ago
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