204.0920-It have 7 significant digits
Answer: 7.81 mol HgO (How many moles of mercury(II) oxide, HgO, are needed to produce 125 g of oxygen, O2?)
Explanation:
This should help you with your question:
Gravitational pull = 9.8 m/s^2
1/2 x 9.8 x 7^2 = 240.1 m
The rock has fallen 240.1 m.
I cannot help you with the rest, but this should give you a headstart.
Answer:
Mirror
Explanation:
The mirror reflects the light , the primary mirror is located at the back end of the tube.
The balanced equation
6CO₂ + 6H₂O = C₆H₁₂O₁₆ + O₂
<h3>Further explanation</h3>
Given
Reaction
CO2 + _H2O = _C6H12O16 + _O2
Required
Balanced equation
Solution
Give a coefficient
aCO₂ + bH₂O = C₆H₁₂O₁₆ + cO₂
Make an equation
C, left = a, right = 6⇒a=6
H, left = 2b, right = 12⇒2b=12⇒b=6
O, left=2a+b, right = 16+2c⇒2a+b=16+2c⇒2.6+6=16+2c⇒2c=2⇒c=1
The equation becomes :
<em>6CO₂ + 6H₂O = C₆H₁₂O₁₆ + O₂</em>