Explanation:
Start with a balanced equation.
2H2 + O2 → 2H2O
Assuming that H2 is in excess, multiply the given moles H2O by the mole ratio between O2 and H2O in the balanced equation so that moles H2O cancel.
5 mol H2O × (1 mol O2/2 mol H2O) = 2.5 mol O2
Answer: 2.5 mol O2 are needed to make 5 mol H2O, assuming H2 is in excess.
Answer:
31536000 seconds
Explanation:
there are 31536000 seconds in one year
A. Apple juice is an example of a homogeneous mixture.
POH= -log[OH-]
I don’t see it on there but that is the answer.
48 square unit
Explanation:
Given parameters:
Surface area of sphere = 4πr²
value of π = 3
radius of sphere = 2
Unknown:
Surface area of sphere = ?
Solution:
To solve we input the given parameters in the formula for the surface area of the sphere.
S. A = 4πr²
r is the radius of the sphere
π is a constant whose value is 3
S.A = 4 x 3 x 2² = 48 square unit
learn more:
Volume of a sphere brainly.com/question/5055270
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