How many grams of hydrogen are needed to produce 1.80g of water according to this equation 2H2+O2 = 2H2O

1. What is the primary cause of the depletion of the Atlantic cod fishery? A. Toxic waste B. Increased fish eating C. Water pollution D. Over fishing 2. Which of the following nonrenewable resources cannot be recycled? A. Iron B. Copper C. oil D.

List and describe the steps of energy transfers that occur that allow a digital recording to be played through a speaker and ultimately become sound waves.

Why did the flame of the burning match or splint go out sodium carbonate and hcl?

Which corresponds to the composition of the ion typically formed by magnesium?

A frog is the best jumper in the pond due to its long legs. What is true about this frogs heritable traits? A) its parents passed on genes for jumping distances through the chromosomes found in their gametes.

At 300 k the pressure inside a gas filled container is 500 kPa if the pressure inside decreses to 100kpa but the volume remains the same what is the final temperature of the gas

The SI unit for current is: joules volts ohms amps

In chemical reactions, there is a conservation of what?

If the temperature of water increases as you heat it, the temperature is the independent variable. True False

Which is made by weathering? A. sediments B. minerals C. ash D. magma