If an atom has 28 protons and 29 neutrons, what is the mass?

In word equations, what do plus signs actually mean?

Which part of a helium atom is positively charged

Calculate the standard enthalpy of formation of ammonium carbonate in Kcal/mol?

Why does the phase of the moon affect tides

What happens to chemical bonds between atoms or ions during a chemical reaction?

What is 3 tenths+4tenths

A lunar eclipse can only occur at which lunar phase? And what about a solar eclipse?

Where are the transition metals on the periodic table? A. In two rows, separated from the rest of the table B. In the second column C. In the first column D. In columns 3 - 12 in the center of the table

A spherical ball of lead has a diameter of 2.5 cm. What is the mass of the sphere if lead has a density of 11.34 g/cm3? (The volume of a sphere is (43) πr3 where r is the radius.)

If a clot were made up of a mass of proteins, what change in the proteins led to the formation of a clot?