How many Oxygen (O) atoms are in the following? H2O + CO2

4

3

2

The charged parts of the atom are the

In outer space you could see a distant explosion (separated by space), however you would not hear the explosion. Explain why this happens based upon your knowledge of wave propagation.

What is the voltage of a circuit when 5C of charge flows with a 7V EMF?

Which are advantages of using uranium as an energy source? a. always available or renewable; produces little air pollution b. a large amount of energy from a small amount of fuel; produces little air pollution c.

The law of reflection states that if the angle of incidence is 39 degrees, the angle of reflection is ___ degrees.

A double-paned window has two glass panes separated by a layer of air. Why is air, rather than glass, used to fill this space?

To determine waves frequency you must know the what

What is the average speed in miles per hour of the car that traveled a total of 200 miles in 5.5 hours

A solid weighs 277.5 g in air and 212.5 g when totally immersed in the liquid of density 0.9 g / cc. Calculate the density of the solid.

Who first described the double-helix structure of DNA?