When 0.1 M HNO₃ is added to water it dissociates as follow,
HNO₃ → H₃O⁺ + NO₃⁻
Let us calculate the pH of this acid in order to know its strength,
As,
pH = -log [H₃O⁺]
Putting H⁺ concentration value,
pH = -log [0.1]
pH = 1
It is highly acidic,
And being strong acid it completely ionizes in water producing only H₃O⁺ and NO₃⁻.
So,
The concentration of H₃O⁺ = 0.1 M
and,
The concentration of NO₃⁻ = 0.1 M
Answer:
oxygen-carbon dioxide cycle
Animals and plants are connected to each other by the oxygen-carbon dioxide cycle. Plants need the carbon dioxide from animals to live and animals must have the oxygen from plants to survive.
Explanation:
hope this helped !
Explanation:
Given a food with a relative humidity of 81%, what is the water activity of that food?
The water activity of a food can be determined by using the formula:
water activity=relative humidity of food / 100
![water activity of a food=\frac{relative humidity of food }{100} \\=81/100\\=0.81](https://tex.z-dn.net/?f=water%20activity%20of%20a%20food%3D%5Cfrac%7Brelative%20humidity%20of%20food%20%7D%7B100%7D%20%5C%5C%3D81%2F100%5C%5C%3D0.81)
Answer: Hydrocarbon fuels like methane (CH4) burn in the presence of oxygen to produce carbon dioxide and water. This process of combustion releases energy. When energy is released during the course of a chemical reaction, it is said to be an EXOTHERMIC reaction.
Explanation:
The answer is C
6.0m x 8.0m= 48.0m
then converting it to cm by multiply
48 x 100