Answer:
The answer to your question is below
Explanation:
2.- 6
3.- Carbon
4.- These electrons can be share to obtain stability.
5.- Protons, electrons
6.- electron cloud
7.- I and III
8.- 1
9.- 8A
10.- 4
11.- F
12.- F
13.- F
14.- T
15.- T
16.- T
17.- T
18.- T (I can not read the question but I think is true)
I. Because they're a limited resource
2 Because they're a cause of carbon pollution.
Answer:
The answer to your question is: Volume = 0.117 l
Explanation:
Data
V = ?
M = 9 x 10 ⁻²
mass = 1,9 g of KH₂AsO₄
MW KH₂AsO₄ = 39 + 2 + 75 + 64 = 180 g
Process
180 g of KH₂AsO₄ ------------------ 1 mol
1.9 g ------------------ x
x = 0.0011 mol of KH₂AsO₄
Molarity = # of moles / volume
Volume = # of moles / molarity
Volume = 0.0011 mol of KH₂AsO₄ / 0.09
Volume = 0.117 l = 117 ml
Answer:
7.22*10^24 molecules
Explanation:
Since one mole has 6.02*10^23 you'd multiply that number by 12
that equals 7.224*10^24 but you need sig figs
Answer:
=1.4953 moles
Explanation:
Iron (III) Oxide is reduced by carbon (II) oxide into Iron. According to the following equation, One mole of Fe₂O₃ react with 3 moles of CO to produce 2 moles of Fe. Thus the reaction ratio of CO to Fe₂O₃ is 3:1
Fe₂O₃₍s₎ + 3CO → 2Fe₍s₎ + 3CO₂₍g₎
125.6 grams of CO is equivalent to: 125.6g/28.0g/mol
=4.486 moles.
The number of moles of Fe produced by the reaction is:
=(4.486 moles×1)/3
=1.4953 moles