Determine the amount of oxygen required to completely combust 15 g of propane.

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mass_C3H8 = 15 # g M_C3H8 = 44.1 # g/mol moles_C3H8 = mass_C3H8 / M_C3H8 moles_O2 = moles_C3H8 * 5 # C3H8 + 5 O2 = 3 CO2 + 4 H2O mass_O2 = moles_O2 * 32 moles_C3H8 = 15 / 44.1 moles_O2 = moles_C3H8 * 5 mass_O2 = 54.2 g

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Asked 48 days ago|2/23/2026 7:54:32 AM

Updated 48 days ago|2/23/2026 8:12:11 AM

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cruz30

mass_C3H8 = 15 # g
M_C3H8 = 44.1 # g/mol
moles_C3H8 = mass_C3H8 / M_C3H8
moles_O2 = moles_C3H8 * 5 # C3H8 + 5 O2 = 3 CO2 + 4 H2O
mass_O2 = moles_O2 * 32
moles_C3H8 = 15 / 44.1
moles_O2 = moles_C3H8 * 5
mass_O2 = 54.2 g

Added 48 days ago|2/23/2026 8:12:11 AM

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Estimate the pH of a 0.05 M acetic acid solution (Ka = 1.8 × 10 ).

Weegy: Given: CH COOH 0.1 M, Ka = 1.8?10 CH COOH H + CH COO Let x = [H ] Ka = x? / (0.1 x) = x? / 0.1 x? = Ka ? 0.1 = 1.8?10 ? 0.1 = 1.8?10 x = (1.8?10 ) = 1.34?10 ? M pH = -log(1.34?10 ?) = 2.87 Answer: pH = 2.87 (More)

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Updated 48 days ago|2/23/2026 8:15:08 AM

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cruz30

C = 0.05
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Added 48 days ago|2/23/2026 8:15:08 AM

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Calculate the theoretical yield of ethanol from 100 g of glucose via fermentation.

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Updated 48 days ago|2/23/2026 8:12:48 AM

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cruz30

mass_glucose = 100 # g
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Added 48 days ago|2/23/2026 8:12:48 AM

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Calculate the enthalpy change when 2 mol of H reacts with O to form water.

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Updated 48 days ago|2/23/2026 8:14:49 AM

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cruz30

n_H2 = 2
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Added 48 days ago|2/23/2026 8:14:39 AM

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Updated 48 days ago|2/23/2026 8:11:30 AM

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cruz30

mass_NH3_produced = 50
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Added 48 days ago|2/23/2026 8:11:30 AM

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Updated 48 days ago|2/23/2026 8:08:36 AM

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cruz30

m = 5 # kg
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Added 48 days ago|2/23/2026 8:08:36 AM

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