Answer:
the answer is the third one the beak
Hello! hopefully this can help you out
Kinetic energy, form of energy that an object or a particle has by reason of its motion
Answer:
4.61 x 10ˉ⁴ mole H₂(g)
Explanation:
Given electric current for 2 min. => 12.4ml of wet H₂(g) at 25⁰C & 715Torr => ? moles H₂(g)
PV = nRT => n = PV/RT
• P = P(H₂) + P(H₂O) = 715Torr = 715mm = P(H₂) + 23.8mm
=> P(H₂) = (715 – 23.8)mm = 619.2mm = 619.2mm/760mm/Atm = 0.815Atm
• V = 12.8ml = 0.0128L
• R = 0.08206 L∙Atm/mol∙K
• T = 25⁰C = 298K
Substituting … n = PV/RT
=> n = (0.815Atm)(0.0128L)/(0.08206 L∙Atm/mol∙K)(298K) = 4.61 x 10ˉ⁴ mole H₂(g)
Answer:
49.4 cal
Explanation:
Step 1: Given data
Composition of 1 cup of watermelon: 0.9 g protein, 0.2 g fat, and 11 g carbohydrate.
Step 2: Calculate the calories provided by 0.9 g of protein
1 g of protein yields 4 cal.
0.9 g × (4 cal/1 g) = 3.6 cal
Step 3: Calculate the calories provided by 0.2 g of fat
1 g of fat yields 9 cal.
0.2 g × (9 cal/1 g) = 1.8 cal
Step 4: Calculate the calories provided by 11 g of carbohydrate
1 g of carbohydrate yields 4 cal.
11 g × (4 cal/1 g) = 44 cal
Step 5: Calculate the total number of calories
3.6 cal + 1.8 cal + 44 cal = 49.4 cal
