HELP! Nitrogen trihydride reacts with oxygen gas to produce nitrogen monoxide & water. How many liters of oxygen gas at STP are needed to react with 50 g of nitrogen trihydride?

Frictional forces acting on an object are often converted into energy, which causes the temperature of the object to rise slightly.

Identify and describe the three ways that mutations affect organisms.

Three cards with holes are arranged in a straight line. a light is shined through the first card’s hole and travels through all three cards. what does this tell you about light rays? a) that light is reflected b) that light is refractive c) that light travels in a straight line d) that light does not travel in a straight line