What is the theoretical yield of sodium oxide (NaO) in grams when 20.00

of calcium oxide (Cao) reacts with an excess amount of Sodium

chloride?

2 NaCl + Cao>CaCl2 + Na20

10.0g

22.1g

32.9g

5.6g

What is the average kinetic energy of 1 mole of gas at 0 degrees kelvin

Which statement about velocity is true? A. It has only magnitude. B. It has only direction. C. It has magnitude and direction. D. It is a scalar quantity.

Find the molar mass of 30Si if the average molar mass of Si is 28.09 g/mol? Silicon has three naturally occurring isotopes (28Si, 29Si, and 30Si). The molar mass and natural abundance of 28Si are 27.98 g/mol and 92.

Elements in group 1 will (lose or gain) electrons to obtain a noble gas structure. How many electrons will the element gain or lose in order to obtain a noble gas structure? (5,3,7,6,1,2,4)

The mass of an electron is (1) equal to the mass of a proton (2) equal to the mass of a neutron (3) greater than the mass of a proton (4) less than the mass of a neutron

Number of hydrogen atoms in NaC2HO4

Calculate the pH for an acid that has a [H+] of 5.8 x10^-11 M.

Complete the lewis dot structure for h2co (in which both h atoms are bonded to c).

Do substances have to be cold to freeze?

Which statement is true of the carbon atoms that make up a diamond? A. They can slip past one another slowly. B. They are always vibrating in place. C. They vibrate only when they are heated. D. They are locked in place and do not move at all.