15.63 moles of HgO are needed to produce 250. 0 grams of Oxygen.
<h3>How we calculate moles from masses?</h3>
Moles of any substance can be calculated as:
n =W/M, where
W = given mass
M = molar mass
Given chemical reaction is:
2HgO → 2Hg + O₂
From the stoichiometry of the reaction, it is clear that:
2 mole of HgO = produce 1 mole of O₂
Given mass of O₂ = 250 grams
Molar mass of O₂ = 32 g/mole
Mole of produced O₂ = 250g / 32g/mole = 7.81 moles
Now, 7.81 moles of O₂ = produced by 2×7.81 = 15.63 moles of HgO
Hence, option (3) is correct i.e. 15.63 moles is the required moles.
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Answer:
O Option 1
Explanation:
IF ENERGY IS RELEASED, THEN ENERGY RELEASED SHOULD BE SUBTRACTED FROM ORIGINAL.
(16.32 X 10^-19) - (5.4 X 10^-19)
10.92 X 10^-19
Answer:
Partial pressure of oxygen = 23.38 kpa (Approx)
Explanation:
Given:
Amount of oxygen = 23.15%
Amount of nitrogen = 76.85%
Pressure (missing) = 101 kpa
Find:
Partial pressure of oxygen
Computation:
Partial pressure of oxygen = [Amount of oxygen x Pressure]/100
Partial pressure of oxygen = [23.15% x 101]/100
Partial pressure of oxygen = 23.38 kpa (Approx)
Answer:
Gaseous nitrogen (78% in air) is fixed (by nitrogen fixing bacteria, and during lightning), then absorbed and assimilated by plants in the form of proteins, as well as nucleic acids. ... Nitrogen is returned to soil with excretory materials of animals and dead organisms.
Explanation:
Nitrates (or nitrites) are natural chemicals that are found in the soil, air and water. Nitrates are also used as a food additive to stop the growth of bacteria and to enhance the flavor and color of foodsAmmonium is also a general name for positively charged or protonated substituted amines and quaternary ammonium cations (NR + 4. ), where one or more hydrogen atoms are replaced by organic groups (indicated by R).an obsessive interest in or feeling about someone or something.
"our fixation with diet and fitness"
Denitrification: the loss or removal of nitrogen or nitrogen compounds specifically : reduction of nitrates or nitrites commonly by bacteria (as in soil) that usually results in the escape of nitrogen into the air
