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Artemon [7]
2 years ago
6

What happens to the density of the air in the balloon as it is heated?

Chemistry
1 answer:
dexar [7]2 years ago
7 0
Hope it helped you.

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3. If the percent by volume is 2.0% and the volume of solution is 250 mL, what is the volume of solute in solution? (1 point) 0.
igor_vitrenko [27]
Volume percent = Volume of solute
                              ----------------------------------
                                Volume of the solution
  
                  2                    Volume of the solute
               -------   =           ------------------------------
                100                               250
                     
         Volume of the solute = 2 x 250
                                                ------------
                                                  100         

                                             =   5 mL.

Hope this helps!




                            




4 0
2 years ago
How many moles is 3.85 x 1025 atoms of gold?
IrinaK [193]

Answer:

64.17 Moles of Au

Explanation:

(atoms and particles are the same)

3.85 x 10 ^25 x (1 mol              

                         /6.02 x 10^23)

3.85 / 6 = .64166

.6416 x 10^2 = 64.166

If you round up the answer you will get 64.17

64.17  moles of Au

4 0
2 years ago
Read 2 more answers
What must happen in a chemical reaction?
klasskru [66]
The anwser is atoms are destroyed
6 0
3 years ago
Methane gas and oxygen gas react to form water vapor and carbon dioxide gas. What volume of water would be produced by this reac
bagirrra123 [75]

Answer:

7.2L

Explanation:

The details of the solution are found in the answer. The balanced stoichiometric equation is first written and the volumes on the left and right hand sides dilligiently compared and calculations are made based on simple comparisons as show.

4 0
3 years ago
Write a conclusion statement that addresses the following questions:
Sindrei [870]

Answer:

did you ever get the answer lol

6 0
3 years ago
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