Oxygen is an element, symbol O
Magnesium oxide is an ionic compound, formula MgO
Answer:
E) rate of appearance of C = 0.45 M/s
rate of the reaction = 0.15 M/s
Explanation:
2A + B → 3C
Writing rate law for the reaction:
<u>Rate of reaction</u> = -
![\frac{d[A]}{dt}](https://tex.z-dn.net/?f=%5Cfrac%7Bd%5BA%5D%7D%7Bdt%7D)
= -![\frac{d[B]}{dt}](https://tex.z-dn.net/?f=%5Cfrac%7Bd%5BB%5D%7D%7Bdt%7D)
= 
![\frac{d[C]}{dt}](https://tex.z-dn.net/?f=%5Cfrac%7Bd%5BC%5D%7D%7Bdt%7D)
→ equation 1
Given that the rate of disappearance of A is 0.3 M/s
⇒ - = 0.3 M/s
⇒Rate of reaction = - = ×0.3 M/s
⇒<u>Rate of reaction = 0.15 M/s</u>
From equation 1, = - 
= ×0.3 M/s
⇒ = 0.45 M/s
or <u>the rate of appearance of C = 0.45 M/s</u>
Question Answer
How many moles are present in 34 grams of Cu(OH)2?
34 grams = 0.35 moles
Answer:
C?
Explanation:
I think it is C if not let me know i will help furthermore
Plz mark brainlyiest
Lets take 100 g compound.
It will have
K - 31.9 g
Cl - 28.9 g
O - 39.2 g
M(K) = 39.1 g/mol
M(Cl) = 35.5 g/mol
M(O) = 16.0 g/mol
K - 31.9 g*1/mol/39.1 g ≈ 0.816 mol
Cl - 28.9 g*1 mol/35.5 g ≈ 0.814 mol
O - 39.2 g*1mol/16.0 g ≈ 2.45 mol
K : Cl : O = 0.816 : 0.814 : 2.45
K : Cl : O = 1 : 1 : 3
KClO3 - potassium chlorate (<span>Berthelot's salt) </span>
