i think that you have to add 100 gramd to produce the amount of 900 grams
The percentage of oxygen is 54,84 %.
800 g oxygen are needed.
Also 10 grams.
Theoretically the mass is 62,3018 g.
This value is 0,2 g hydrogen.
The percentage of oxygen is 54,84 %.
Petrol contains about 84% carbon and 16% hydrogen by weight so a litre weighing 700 grams contains 588 grams of carbon and 112 grams of hydrogen. In the engine it would burn with 2464 grams of oxygen to produce 2156 grams of CO2 and 1008 grams of water (steam), which is normally invisible but can be seen in the exhaust gases from a cold engine.
It is not measured in grams but PPM because it is a gas.
How many grams of hydrogen peroxide (H2O2) must be added to 1,500 mL of water to produce a concentration of 1.33 m (molal solution)? (Recall that the density of water is 1.0 gram/mL
800 g oxygen are needed.
25
lets see. H20 you have 2.016 grams of hydrogen here to 16.0 grams oxygen 2.016/16.0 X 100 = 12.6% hydrogen by mass H2O2 you have the same 2.016 grams hydrogen here, but you have 32.0 grams oxygen in this molecule 2.016/32.0 X 100 = 6.3% so H2O has the higher percent by mass of hydrogen
43.2 grams of water
The formula for Oxygen gas is O2, and the formula for water is H2O. Each molecule of Oxygen gas can produce 2 molecules of water (with enough Hydrogen, of course). So, 2.5 moles of Oxygen gas would be required to produce 5.0 moles of water.
8.62
Answer: 16 g of oxygen and 2 g of hydrogen.
Also 10 grams.