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From a deck of 52 cards, probability that all 4 aces are drawn before any king
Consider only 8 cards: 4 aces (A) and 4 kings (K) Total orderings = 8! / (4!×4!) = 70 Favorable: all Aces before any King only 1 way (AAAAKKKK) Probability = 1 / 70
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Asked 106 days ago|2/23/2026 9:24:48 AM
Updated 106 days ago|2/23/2026 9:55:49 AM
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Consider only 8 cards: 4 aces (A) and 4 kings (K)
Total orderings = 8! / (4!×4!) = 70
Favorable: all Aces before any King only 1 way (AAAAKKKK)
Probability = 1 / 70
Added 106 days ago|2/23/2026 9:55:25 AM
This answer has been confirmed as correct and helpful.
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P(AAAA before KKKK) = (4/8) * (3/7) * (2/6) * (1/5)
= (1/2) * (3/7) * (1/3) * (1/5)
= (1 * 3 * 1 * 1) / (2 * 7 * 3 * 5)
= 3 / 210
= 1 / 70.
The probability that all 4 aces are drawn before any king is 1/70
Added 106 days ago|2/23/2026 9:55:49 AM
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Questions asked by the same visitor
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 106 days ago|2/23/2026 8:15:08 AM
1 Answer/Comment
C = 0.05
Ka = 1.8e-5
H_conc = (Ka * C)**0.5
pH = -log10(H_conc)
H_conc = (1.8e-5 * 0.05)**0.5
H_conc= 0.0009487
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Added 106 days ago|2/23/2026 8:15:08 AM
This answer has been confirmed as correct and helpful.
Calculate the theoretical yield of ethanol from 100 g of glucose via fermentation.
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Not Answered
Updated 106 days ago|2/23/2026 8:12:48 AM
1 Answer/Comment
mass_glucose = 100 # g
M_glucose = 180.16 # g/mol
M_ethanol = 46.08 # g/mol
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moles_ethanol = moles_glucose * 2 # C6H12O6 = 2 C2H5OH + 2 CO2
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moles_ethanol = moles_glucose * 2
mass_ethanol = 51.1 g
Added 106 days ago|2/23/2026 8:12:48 AM
This answer has been confirmed as correct and helpful.
Determine the amount of oxygen required to completely combust 15 g of propane.
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Not Answered
Updated 106 days ago|2/23/2026 8:12:11 AM
1 Answer/Comment
mass_C3H8 = 15 # g
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moles_C3H8 = mass_C3H8 / M_C3H8
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Added 106 days ago|2/23/2026 8:12:11 AM
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Calculate the enthalpy change when 2 mol of H reacts with O to form water.
Weegy: 2H2 + O2 2H2O 2 mol H2 + 1 mol O2 - 2 mol H2O (More)
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Updated 106 days ago|2/23/2026 8:14:49 AM
1 Answer/Comment
n_H2 = 2
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H_total = n_H2 * H_reaction_per_mol
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H_total = -572 kJ
Added 106 days ago|2/23/2026 8:14:39 AM
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Estimate the percentage yield if 50 g of NH is produced from 100 g of N and H .
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Updated 106 days ago|2/23/2026 8:11:30 AM
1 Answer/Comment
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percentage_yield = (mass_NH3_produced / mass_NH3_theoretical) * 100
percentage_yield = (50 / 100) * 100
percentage_yield = 50%
Added 106 days ago|2/23/2026 8:11:30 AM
This answer has been confirmed as correct and helpful.
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