1) Balanced chemical reaction
4NH3 + 5O2 ---> 4NO + 6H2O
2) Molar ratios
4 mol NH3 : 5 mol O2 : 4 mol NO : 6 mol H2O
3) Convert 8.45 g of O2 to moles
moles = mass in grams / molar mass = 8.45 g / 32.0 g/mol = 0.264 mol O2
4) Proportion
5 mol O2 / 6 mol H2O = 0.264 mol O2 / x
=> x = 0.264 mol O2 * 6 mol H2O / 5 mol O2 = 0.3168 mol H2O
5) Convert 0.3168 mol H2O in grams
mass = molar mass * number of moles
molar mass H2O = 18.0 g/mol
mass = 18.0 g/mol * 0.3168 mol = 5.7024 g ≈ 5.70 g
Answer: 5.70 g
Answer:
The spectroscope scale is illuminated so that one can know exactly where the wavelengths of the lines are falling along.
Given the parent compound, draw the mass spectrum fragment that is observed at m/z 77. Include any hydrogen atoms and the charge. Its 6 carbon ring with 3 double bonds and a Cl coming off the of it.
The statement that is true is that B. Atoms always remain intact during chemical reactions.
Atoms simply mean the <u>basic units of matter.</u> They're the defining structure of an element. Atom is also known as the smallest unit of matter.
It should be noted that atoms always remain intact during chemical reactions. They cannot be added and removed when there are <em>chemical reactions.</em>
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