<u>Answer:</u>
<u>Step-by-step explanation:</u>
<u>Write the product:</u>
<u>Convert it to improper fraction:</u>
<u>Multiply:</u>
<u>Simplify:</u>
Hence, <u>the product is 21/32.</u>
Hoped this helped.

Answer:
by multiplying all numbers seperatly by each other and adding those
Step-by-step explanation:
You have to convert 50 feet to inches, so you take 50 times 12 and get 600. Then, you take 600/75 to get the number of rotations. Your final answer shold be 8 rotations.
The hydronium ion is H₃O⁺ and its concentration is equivalent to the H⁺ ion concentration. The H⁺ ion concentration is given by:
pH = -log[H⁺]
[H⁺] = 10^(-8.2)
[H⁺] = 6.31 x 10⁻⁹ mole/dm³
The hydronium ion concentration is 6.31 x 10⁻⁹ mole/dm³