Answer:
I think it's C
Explanation:
i think its c b3cause when you guess c always feels right
Answer:
0.0063 mol
Explanation:
Step 1: Write the balanced combustion equation
C₈H₁₈(l) + 12.5 O₂(g) ⇒ 8 CO₂(g) + 9 H₂O(g)
Step 2: Establish the appropriate molar ratio
According to the balanced equation, the molar ratio of C₈H₁₈ to CO₂ is 1:8.
Step 3: Calculate the number of moles of C₈H₁₈ needed to produce 0.050 moles of CO₂
0.050 mol CO₂ × 1 mol C₈H₁₈/8 mol CO₂ = 0.0063 mol C₈H₁₈
Answer:
ONE: spoon/ catapult
TWO: ball holder
THREE: the joint
FOUR: the rotater
FIVE: I think it is a lever that picks up the big spoon/ catapult
SIX: I don't know the chapter
Petroleum is a significant source of US greenhouse gas emissions.
Answer:
N = 603.32 × 10 ²⁰
Explanation:
Given data:
Wavelength of photon = 12.0 μm or 12 × 10 ⁻⁶ m
Energy = 1.0 KJ or 1000 j
Number of photons = ?
Solution:
Formula:
E = n . h . f
E = energy
N = number of photons
h = planck's constant
f = frequency
it is known that
f = c/λ
thus,
E = N . h . c / λ
Now we will put the values in formula.
1000 j = ( N. 6.63 × 10 ⁻³⁴ j.s × 3 × 10⁸ m/s ) / 12 × 10 ⁻⁶ m
N = 1000 j ×12 × 10 ⁻⁶ m / 6.63 × 10 ⁻³⁴ j.s × 3 × 10⁸ m/s
N = 12000 j × 10 ⁻⁶ m / 19.89 × 10 ⁻²⁶ j. m
N = 603.32 × 10 ²⁰
