Calculate the relative (percent) uncertainty

A fixed volume of gas at constant temperature has a volume of 45.6 L at 1.24 atm. Use Boyle’s Law to calculate: b. the pressure of the gas in atmospheres when it is compressed to 12.55 L.

Bromine is the only nonmetal that is a liquid at room temperature. Consider the isotope bromine-81, .Select the combination which lists the correct atomic number, neutron number, and mass number, respectively.

In the modern model of the atom, the protons and electrons have approximately the same mass, 1 amu.

In the modern model of the atom, the protons and neutrons occupy the central region of the atom named the nucleus.

Select the common unit cells

Which statements about the Lewis structure of the fulminate ion, CNO–, are correct? I.  The nitrogen atom has a positive formal charge. II.  The nitrogen atom has a lone pair of electrons

What is the bond order of carbon monoxide, CO?

Which one of the following numbers contains a digit or digits which is/are not significant?

Use the standard heats of formation from the textbook to calculate delta H for the following unbalanced reaction: C6H12O6 + O2 (g) –> CO2 (g) + H2O (g)