2H2 + O2 —> 2H20 + energy
What type of reaction is represented by this equation ?
- decomposition
-double replacement
-Single replacement
-synthesis

Determine the mass of fuel required for the expected energy consumption in the united states for the next ten years. energy use per person per year in the united states = 3.5 x 1011joules base calculations on current population of 310,000,000.

Ineed to find the answer of this question because i dont understand it

When a device is used in a circuit in which the voltage is 81 v the current flowing through the device is 3 a what is the resistance of the device