Assuming hydrogen gas is in excess, calculate the moles of oxygen
<span>n(O2) = 16.0 g / 32.0 g/mol = 0.500 mol </span>
<span>Calculate the moles of water using the mole ratio; the ratio of H2O to O2 is 2:1 or the moles of H2O is twice the moles of O2 </span>
<span>n(H2O) = 2 x n(O2) = (2)(0.500) = 1.00 mol </span>
<span>Calculate the mass of H2O by multiplying the moles by the molar mass of water </span>
<span>mass = (1.00 mol)(18.0 g/mol) = 18.0 g H2O </span>
<span>Ans: A)
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The answer is D all of the above because I just got done with this question
Answer:
The mass ratio of zinc to sulfide is 85:42.
2.5559 kg of Zn are in 3.82 kg of ZnS.
Explanation:
a) Mass of zinc sulfide = 254 g
Mass of zinc in a zinc sulfide sample = 170 g
Mass of sulfide in zinc sulfide sample = x
254 g = 170 g+ x
x = 84 g
The mass ratio of zinc to sulfide:
b) Mass of zincsulfide sample = 3.83 kg
The mass ratio of zinc to sulfide is 85:42.
Let the mass of zinc and sulfide be 85x and 42x respectively:
85 x+ 42 x=3.82 kg
x =0.03007 kg
Mass of an zinc= 85x=85 × 0.03007 kg= 2.5559 kg
Answer:
from the spaces left between chains when the polymer is
formed.
Explanation:
Polyethylene polymer may be of high or low density. Whether the polymer is of high or low density depends on the arrangement of the polymer chains.
If the polymer chains are close together such that the resultant polymer is crystalline with chains packed closely, we have high density polyethylene.
On the other hand if the chains are not close together and there are spaces left between chains when the polymer is formed, then we have low density polyethylene.
Hence, low density polyethylene gets its name from the spaces left between chains when the polymer is formed.
The organelle is the chloroplast. While plant cells will also have a cell wall, the cell wall is not considered an organelle.