15,000 + 400 + 9
Or
(1x10,000)+(5x1,000)+(4x100)+(0x10)+(9x1)
Answer:
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Explanation:
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Answer:
11 feet
Explanation:
No. of pipes = 4
Length of pipe when connected = 44 feet
So
length of 1 pipe = 44 ÷ 4
= 11 feet
Answer:
14
Explanation:
For independent variables X and Y;
S.D(X - Y) is expanded as :
S.D(X) + S.D(Y)
If S.D(X) = 6 and S.D(Y) = 8 ; where, X and Y are independent ;
SD(X-Y) = SD(X) + SD(Y)
SD(X - Y) = 6 + 8
SD(X - Y) = 14
1 mol KMnO₄ contains 4 mol O, which has a molar mass of about 15.999 g/mol. Then the mass of O in the sample is
(4 mol) (15.999 g/mol) ≈ 63.996 g
