How do i find the mole of something?

At dinner your brother got mad and threw your burrito at a speed of 4 m/s. It flies for 18 seconds through the air. How much distance did the burrito cover?

Part b an "empty" container is not really empty if it contains air. how may moles of nitrogen are in an "empty" two-liter cola bottle at atmospheric pressure and room temperature (25∘c) ? assume ideal behavior.

When an object falls toward the ground due to gravity, what type of energy becomes kinetic energy? O chemical O electromagnetic O potential Othermal

What is the wavelength of light with a frequency of 7.66*10^14 Hz?

24g copper is submerged in water in a graduated cylinder, and the total volume increases by 2.7 mL. who's is the density of copper?

When does a spring tide take place? At the beginning of spring Only during the spring season Only after spring is over At any time

The highest cloud are known as

What is the mass of 4.85 X 10^22 atoms of iron (Fe) ?

If element x has 95 protons how many electrons does it have

Which of the following when dissolved in deionized water would make a good conducting solution? a) methanolb) sugarc) baking soda