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andrezito [222]
3 years ago
6

Do all waves have the same speed

Chemistry
2 answers:
lord [1]3 years ago
8 0
No waves have all different speeds depending on the day and time
Tomtit [17]3 years ago
6 0
No, I could be wrong tho
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Keiko needs 100mL of a 5% acid solution for a science experiment. She has available a 1% solution and a 6% solution. How many mi
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Keiko should mix 20 mL 1% solution and 80 mL 6% solution for to make 100 mL 5% solution

Explanation:

There are 2 unknown values X= mL 6% solution and Y=1% solution. So, we need 2 equations:

1. Equation acid concentration. X mL 6% + Y mL 1% = 100 mL 5%

2. Equation solvent concentration X mL 94% + Y mL 99% = 100 mL 95%

When clearing X and Y :

(X mL 6%    +   Y mL 1%      =    100 mL 5%) (-15,7)

X mL 94%  +   Y mL 99%   =   100 mL 95%

_______________________________

 -                      Y  0.83       =   16.5

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Replace Y in anyone equation and X = 80 mL 6% solution

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