Because of ocean acidification, it is expected that in 2050 the mass of CaCO3 deposited annually in coral reefs will be 20% less than is deposited currently. Calculate how much less CaCO3 in Kg is expected to be deposited in 2050 than would be deposited if ocean water pH were to remain at its current value.

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Given that the current annual global increase in mass of CaCO3 in Coral reefs is 1.5*10^12 kg/year. Because of ocean acidification, it is expected that in 2050 the mass of CaCO3 deposited annually in coral reefs will be 20% less than is deposited currently. Calculate how much less CaCO3 in Kg is expected to be deposited in 2050 than would be deposited if ocean water pH were to remain at its current value.

Expected deposited weight is 3 * 10^11 kg

Explanation:

Given

Weight = 1.5 * 10^12 kg/year

Percentage less = 20%

Provided that the pH of the ocean water were to remain at its current value, the expected weight of CaCO3 is calculated as follows;

% less * weight.

Substitute in the values;

20% * 1.5 * 10^12 kg

= 0.2 x 1.5 x 10^12 kg

= 3 * 10^11 kg

Hence, the expected deposited weight is 3 * 10^11 kg

electron microscopy and scanning tunneling microscopes gives us a greater understanding of atoms by being able to see the atom itself, and lets us see some atomic reactions.

explanation:

answer: -

reaction:

na + cl ⇌ nacl

balanced chemical equation:

na + 2cl ⇌ nacl2

sodium + clorine goes to form sodium chloride (table salt).

the product is nacl2.

and the reactants are na and cl.

(note: if you don’t know what ⇌ means, read below: -

⇌(double head arrow) means reversible reaction).