The primary anthropogenic source of atmospheric carbon dioxide (co2 ) is

Chemistry

1 answer:

Ket [755]3 years ago

7 0

Burning of oil,gases and coal are the antropogenic source of co2

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Which of these substances acts as a buffer? a. blood b. lemon juice c. curd

il63 [147K]

The correct answer is( A) blood.

when the buffer solution its PH value changes very little when a small amount

of strong acid or base is added to it, and here the bicarbonate buffering system is used to regular the PH of the blood that keeping the PH at nearly constant value by maintaining the original acidity or basicity of the solution.

7 0

3 years ago

A chemical test has determined the concentration of a solution of an unknown substance to be 2.41 M. a 100.0 mL volume of the so

Oksana_A [137]

Answer : The molar mass of unknown substance is, 39.7 g/mol

Explanation : Given,

Mass of unknown substance = 9.56 g

Volume of solution = 100.0 mL

Molarity = 2.41 M

Molarity : It is defined as the number of moles of solute present in one liter of volume of solution.

Formula used :

$\text{Molarity}=\frac{\text{Mass of unknown substance}\times 1000}{\text{Molar mass of unknown substance}\times \text{Volume of solution (in mL)}}$