Suppose you need 7.0 m of grade 70 tow chain, which has a diameter of 38" and weighs , 2.16/kgm to tow a car. how would you calculate the mass of this much chain?

Answer : The mass of 7.0 m chain is, 15.12 kg

Explanation :

As we are given that,

The weight of the chain per unit length = 2.16 kg/m

Now we have to determine the mass of chain for 7.0 m length.

As, the mass of 1 m length of chain = 2.16 kg

So, the mass of 7.0 m length of chain =

                                                                = 15.12 kg

Therefore, the mass of 7.0 m chain is, 15.12 kg

when [oh-] is 10-5  m, and [h3o+] is 10-9  m, the poh is 5 and ph is 9. again in both cases the sum of ph and poh is 14. however, the hydrogen ion concentration is not always going to be equal to exactly 1 x 10 raised to a negative number. for example, we skipped over the value of 2.0 x 10-7.