How many moles of nitrogen gas are in 135 L of nitrogen gas at standard temperature and pressure

Find the density of metal with a volume 4.0 cm and a mass of 8.0 grams.

What is the actual amount of phosphorous in a fertilizer with a npk ratio of 15-15-20?

According to scientific evidence the age of the earth is about

What form of the ideal gas law would you use to calculate the volume of a gas

How can you express the concentration of hydrogen and hydronium ions in a solution?

A living thing that cannot make its own food and must eat other living things for energy

Which best explains why astronauts appear weightless when they are in a space shuttle orbiting Earth? • They are falling toward Earth at the same rate as the space shuttle.

If increase the amplitude how does the velocity change? (No google)

What is the result of multiplying (2.5 * 1010) * (3.5 * 10-7) ? Use the correct number of significant digits.

What is 0.002353 to two significant figures