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Neon is a monatomic gas (1 atom/entity), so finding the number of atoms is as simple as multiplying the quantity of gas by the number of entities in a mole:
(5.00 moles Ne gas) (6.022 X 1023 entities/1 mole Ne gas) (1 atom of Ne/entity)
= 3.01 X 1024 atoms of Ne
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You may notice that if the units are treated as factors, they cancel, leaving the desired unit (atoms) at the end.
Wiki User
∙ 12y ago
Wiki User
∙ 10y agoNeon (Ne) is a noble gas and exists as a monatomic element.
Atomic Mass of Ne = 20.2
Amount of He = 18.5/20.2 = 0.916mol
There are 0.916 moles of neon in a 18.5g pure sample.
Wiki User
∙ 11y ago1 mole of neon weighs 10 g and has 6.023 x 1023 atoms.
Wiki User
∙ 12y ago15 grams neon (1 mole Ne/20.18 g)(6.022 X 1023/1 mole Ne)
= 4.5 X 1023 atoms of neon
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Wiki User
∙ 7y ago25.0 g of neon 1,239 moles.
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How many liters of water can be made from 5 L of oxygen gas and an excess of hydrogen?
55 grams O2 × (1 mol O2 ÷ 32 g O2) × (2 mol H2O ÷ 1 mol O2) × (22.4 L ÷ 1 mol H2O) = 77 L H2O(g)In the liquid form, it works out to just under 62 milliliters.
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Calcium is 40g per mole (according to the periodic table,) so 50/40=1.25 moles.
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How many liters of water can be made from 5 L of oxygen gas and an excess of hydrogen?
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