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Moles of H in 4 g sample?
moles=molar massmass =4/1=4 moles
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Question
Asked 18 days ago|1/27/2026 8:21:33 AM
Updated 18 days ago|1/27/2026 8:57:06 AM
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Moles of H in 4 g sample?
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Flora1988
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Added 18 days ago|1/27/2026 8:55:56 AM
This answer has been added to the Weegy Knowledgebase
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Flora1988
[1/27/2026 8:57:10 AM]
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Flora1988
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Added 18 days ago|1/27/2026 8:56:23 AM
This answer has been added to the Weegy Knowledgebase
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Flora1988
[1/27/2026 8:57:11 AM]
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Flora1988
moles=molar massmass =4/1=4 moles
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Added 18 days ago|1/27/2026 8:57:06 AM
This answer has been confirmed as correct and helpful.
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A 5 kg block slides 10 m with friction force 20 N. Work done by friction?
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Friction is a force that is created whenever two surfaces move or try to move across each other.
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W = Fd cos(180) = 20(10)(-1) = -200 J
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Updated 19 days ago|1/26/2026 8:37:55 AM
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F = ma
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Added 19 days ago|1/26/2026 8:37:55 AM
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A 0.2 kg ball is thrown at 15 m/s. Find momentum.
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Updated 19 days ago|1/26/2026 8:46:09 AM
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cruz30
p = mv = 0.2 × 15 = 3 kg·m/s
Added 19 days ago|1/26/2026 8:45:53 AM
This answer has been confirmed as correct and helpful.
3
Flora1988
Momentum = mass × velocity = 0.2 kg × 15 m/s = 3 kg m/s.
Added 19 days ago|1/26/2026 8:46:09 AM
This answer has been confirmed as correct and helpful.
A 2 kg object at 10 m height. Potential energy?
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cruz30
PE = mgh = 2(9.8)(10) = 196 J
Added 19 days ago|1/26/2026 8:45:20 AM
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E = Pt = 50 × (2×3600) = 360000 J
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