Answer:
0.13M HNO3 is the concentration of the unknown
Explanation:
Nitric acid, HNO3, reacts with NaOH as follows:
HNO3 + NaOH → H2O + NaNO3
<em>Where 1mol HNO3 reacts with 1mol NaOH</em>
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To find the concentration of HNO3 we must find, as first, the moles NaOH added = Moles HNO3 in the solution:
30mL * (1L / 1000mL) * (0.15mol / 1L) = 0.0045 moles HNO3
In 35.0mL = 0.035L:
0.0045 moles HNO3 / 0.035L =
0.13M HNO3 is the concentration of the unknown
It is true that methane, which is a greenhouse gas and contributes to global warming.
A greenhouse gas is a gas that absorbs and emits radiant energy within the thermal infrared range.
Global warming is rise in the average temperature of the Earth's climate system.
Most often greenhouse gases are carbon dioxide (CO2) and methane (molecular formula CH4). These gases come from burning multiple substances: coal, petroleum, plastic and natural gas.
Balanced chemical reaction of combustion of methane:
CH₄ + 2O₂ → CO₂ + 2H₂O
Greenhouse gases are so difficult to measure, because carbone dioxide, methane, chlorofluorocarbons comes from multiple sources, some of which are relatively hard to measure.
More about global warming: brainly.com/question/26402403
#SPJ4
Answer:
Kp is 2.98 (option c.)
Explanation:
The decomposition is:
NH₄NO₃(s) → N₂O(g) + 2H₂O(g)
Total pressure at equilibrium is 2.72 bar so, in order to determine Kp we need the partial pressure and we only have total pressure.
According to stoichiometry, nitrogen oxide increase by 1, the partial pressure and water vapor, by 2.
Total pressure is: Partial pressure N₂O + Partial pressure H₂O
2.72 bar = X + 2X → X = 2.72 bar / 3 = 0.91 bar
Partial pressure N₂O = 0.91 bar
Partial pressure H₂O = 1.81 bar
We make the expression for Kp = Partial pressure N₂O . (P. pressure H₂O)²
Kp = 0.91 . 1.81² = 2.98
We do not consider the ammonium nitrate, because it is solid
Answer:
C
Explanation:
The ozone layer absorbs ultraviolet rays from the sun.
