Isotopes of elements have different: atomic masses atomic numbers electron shells numbers of protons

1. What is the difference between the terms "temperature" and "heat?

Be sure to answer all parts. identify a, b, and c, intermediates in the synthesis of the five-membered ring called an α-methylene-γ-butyrolactone. this heterocyclic ring system is present in some antitumor agents.

What's the relationship between frequency and efficiency of a machine

Why are molecule atoms as far away from each other as possible

Choose the correct energy transformation for a rock falling from a cliff. A. heat energy to kinetic energy B. heat energy to potential energy C. potential energy to kinetic energy D. kinetic energy to potential energy

What is the molar mass of Al2 (SO4) 3?150.03 g/mol 278.03 g/mol 342.17 g/mol 450.09 g/mol

1. Which of the following species determines the chemical properties of an atom? A. Electron B. Neutron C. Nucleus D. Proton 2. The following glasswares are used to measure the volume of liquids except A. graduated beaker B. pipette C. test tube D.

A sample of a certain material has a mass of 2.03 x 10-3 g. calculate the volume of the sample, given the density is 9.133 x 10-1 g/cm3.

What happens to a reactant molecules when forming product molecules

Which is the atomic number of an atom with six valence electrons