How many valence electrons does iron have?

What is the relationship between temperature and kinetic energy? O A. As molecules slow down, the temperature starts to increase. O B. When all molecular motion stops, the temperature stops changing. O C.

How many moles of pcl5 can be produced from 60.0 g of cl2 (and excess p4) ?

4 * 10-5 cm in scientific notation

Chamber 1 and Chamber 2 have equal volumes of 1.0L and are assumed to be rigid containers. The chambers are connected by a valve that is initially closed. Chamber 1 contains 2.00 moles of helium and Chamber 2 contains 1.00 mol of helium.

What is the nuclear binding energy in joules for an atom of helium-4? Assume the following: Mass defect = 5.0531 * 10-29 kilograms. Use E = mc2, with c = 3 * 108 m/s

If 125 mL of a 1.1 M glucose solution is diluted to 500.0 mL, what is the molarity of the diluted solution? Express your answer using two significant figures.

What do you chemically call water?

Can beryllium be broken down by chemical change?

What is the total number of atoms in this formula? NaHCO3

An object was measured by a worker as 14.6 cm long, however, the manufacturer specifications list the length of the object at 14.4 cm. What is the percent error in the workers measurement