Answer:
The amount of oxygen in 2.5 moles of water is 40 grams. The molecular formula of water is H₂O. 1 mole of water contains 1 mole of oxygen
Answer:
The positive charge in carbon is C
Explanation:
Atomic weight: An atom consists of protons, neutrons and electrons. Atomic mass is the sum of the number of protons and neutrons. The average weight of mass is called atomic mass of that atom.
The positive charge of an atom is proton.
The atomic weight of carbon = 12.0107 g/mol
Avogadro's number = 6.023×10⁻²³ atom/ mol
Charge = 1.602×10⁻¹⁹ C
The weight of carbon = 0.9 kg = 900 gram
Number of protons in carbon = 6
The positive charge in carbon is
=No. mole× Avogadro's Number× No. proton × charge per proton
C
A) molar mass H₂ = 2.0 g/mol
m = n * mm
m = 15.0 * 2.0
m = 30.0 g of H₂
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b) molar mass N₂ = 28.0 g/mol
m = n * mm
m = 3.5 * 28.0
m = 98.0 g of N₂
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c) molar mass of NaOH = 40.0 g/mol
m = n * mm
m = 2.69 * 40.0
m = 107.6 g of NaOH
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hope this helps!
I think it's the minimum required energy to the reaction to occur
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