3. A toy car is moving on a track at 4.0 m/s. If the toy car has 16 J of kinetic energy, what is the mass

of the car in kilograms?

Which statements about a sample of gas containing molecules of different masses are true? Check all that apply. A. The rms speed depends only on temperature, and so all types of particles in the sample have the same rms speed. B.

6Li + N2 2Li3N If 12 mol of lithium were reacted with excess nitrogen gas, how many moles of lithium nitride would be produced? 4.0 mol 6.0 mol 12 mol 36 mol

How do phospholipids interact with water molecules? how do phospholipids interact with water molecules? phospholipids dissolve in water. phospholipids do not interact with water because water is polar and lipids are nonpolar.

Which best explains why the total mass of the product (s) would be less than the total weight of the reactant (s) after a chemical reaction?

You use an analytical balance to measure the mass of a weigh boat and record a mass of 1.5624 g. You then add some NaHCO3 to the weigh boat and give the weigh boat to your lab partner to measure.

What conclusion can be drawn from the statement that an element has low electron affinity, low electronegativity, and a low ionization energy?

A scientist performs an experiment in which a radium-226 (Ra-226) atom decays into radon-222 (Rn-222). The scientist concludes that some energy must have been added to the system to cause this reaction to begin.

Which suitable method can be used to separate a mixture of sand and paraffin

How many vowels does the word love have

What is silicon used for? -matches -gunpowder -glass -steel can coating