A sample of urea contains 1.121 g of N, 0.161 g of H, 0.48 g of C, and 0.64 g of O. What is the empirical formula of urea?

In a flashlight, many parts work together as a system. which of the following parts is considered the output in this particular system? A. the switch B. light C. the light bulb D. the batteries

The total kinetic energy of all the molecules that make up a sample is called the: -Convection -Heat Energy -Kelvin -Thermal Energy

CH3CH (C2H5) (CH2) 2 c (CH3) 2 c (C2H5) 2CH3 tentukan rantai utama dari senyawa karbon?

Why do scientist use models to study atoms and molecules?

How can the rate of a reaction be increased? Having less surface area. Adding a Catalyst. Lowering the temperature. Decreasing the amount of reactants.

How much is 35° C in F?

Which describes a precipitate in a chemical reaction? a a gaseous product formed from aqueous reactants b a solid reactant that forms aqueous product c a gaseous reactant that forms aqueous products d a solid product formed from aqueous reactants

Prepare a solution that is 0.1 M acetic acid and 0.1 M sodium acetate by measuring out 5.0 mL of the 1.0 M acetic acid solution and 5.0 mL of the 1.0 M sodium acetate solution in a 100 mL graduated cylinder, diluting the 10.

Which element has an ion that is smaller than an ion of calcium?

Which factor is responsible for the weak attraction between diatomic molecules of the halogens (group 7A) ? A) Hydrogen bonding B) Ionic bonding C) Dipole interactions D) London dispersion forces