ElectricPavlov

No votes are   7 out of 12     yes votes are  5 out of 12

7/12 = 5964 votes

total votes =    5964  * 12/7  = 10224  total votes

Cannot be done ...... with the two concentrations for X and Y given.

   X  and Y BOTH have lemon concentration as 20%........combining them in ANY ratio will only result in Lemon 20%....signature is 40 % lemon and you cannot make that.

Yes.

Seven would not be possible when the final amount is only THREE gallons.

You WEIGH less on the moon.....approx 1/6 of your Earth weight....HOWEVER : YOUR MASS remains the same!

Potential Energy = k g h

                           = 80* 9.8 * 5 = 3920 j          The diver will also have KINETIC energy at this point.

x = gallons of 10%

3-x  = gallons of 40%

amount of juice in 10%  =   .1x

amount of juice in 40% =   .4(3-x)

Final amount of juice is 3 gallons at 20%    =   .2 (3)    

the ingredients = final

.1x + .4(3-x) = .2 (3)

-.3x + 1.2 = .6

-.3x = -.6

x = 2                   2 gals of 10%      3-2 = 1 gal of 40%

That IS the answer.....a balanced chemical reaction ....

   2 calciums atoms  combine with 4 water molecules to produce 2 calcium hydroxides and 2 molecules of hydrogen gas (H2)

I added the  =   because it was missing in your original question....

2Ca(s) +4 H2O(I)  =  2 Ca(OH)2(aq)+2H2(g)      I added the ' = '

Thanx for the clarification, Chris !   

I like that determination !     Thnx    ~EP