How many molecules are in 237g (about a cup of water)

As you move from left to right across a period, what happens to the atomic radii?

How many micrograms are in 5.6 kg?

Which of the following must be true about a reaction if it is only spontaneous at high temperatures? A) it is exothermic, with both negative enthalpy and entropy changes. B) It is endothermic, with both positive enthalpy and entropy changes.

Calculate the concentration of 5g dextrose in molarity

A container holds a sample of hydrogen at 300 K with a pressure of 10 ATM when the temperature decreased to 100k and Volume remained constant. A. 3000 atm B. 3.3 atm C. 0.1 atm D. 0.3 atm

Rank the following bonds from strongest to weakest and provide the bond energy: the bond between hydrogen and oxygen in a water molecule; the bond between sodium and chloride in the NaCl molecule; the bond between atoms in a metal;

In an endothermic reaction do the reactants or the products have the lower potential energy

What kind of nuclear reaction would result in the release of a beta particle

Determine the number of bonding electrons and the number of nonbonding electrons in the structure of xef2.

1. 1.204 x 1024 atoms He = ? moles He