Answer:
a) 1504
b)
Step-by-step explanation:
A
a. no of people that are male = 42
b. no of people that study biology = 34
c. no of people that do both = 1428(42 × 34)
d. no of people that are Male or study biology or both = 42 + 34 + 1428= 1504
B.
a.no of people that are male or female = 90
prob(male) = 14 ÷ 90
= 0.16
b. prob(bio) = 34 ÷ 34
= 1
c.prob(both) = 0.16
d. prob(all) = 0.16 + 1 + 0.16
= 1.32
Answer:
450
Step-by-step explanation:
Answer:
£140
Step-by-step explanation:
Modal is the most common value in a sample, in this case it's 140
Answer:
513 g of C₁₂H₂₂O₁₁ will contain 18 moles of Carbon atoms.
Step-by-step explanation:
English Translation
You would know how to say the number of moles of carbon atoms in 513 g of C₁₂H₂₂O₁₁ (Molar mass of C₁₂H₂₂O₁₁: 342 g.
Solution
From the molecular formula for the compound,
1 mole of C₁₂H₂₂O₁₁ consists of 12 moles of carbon atoms.
We just need to find the number of molesnof the mass of C₁₂H₂₂O₁₁ provided.
Number of moles = (mass)/(molar mass)
Mass of C₁₂H₂₂O₁₁ = 513 g
Molar mass of C₁₂H₂₂O₁₁ = 342 g
Number of moles of C₁₂H₂₂O₁₁ present
= (513/342) = 1.5 moles
1 mole of C₁₂H₂₂O₁₁ consists of 12 moles of carbon atoms.
1.5 moles of C₁₂H₂₂O₁₁ will contain (1.5×12/1) moles of carbon atoms, that is, 18 moles of Carbon atoms.
Hope this Helps!!!
