What is the oxidation number for sodium?

A

2-

B

1+

C

2+

D

1-

Explain how to determine the average atomic mass from knowing the percent abundance of isotopes

The specific heat of ethanol is 2.44 J/g ֯C. How many kJ of energy are required to heat 50.0 grams of ethanol from - 20 ֯C to 68 ֯C? (heat equation)

8. How many atoms of cobalt are in a 0.39 mole sample of CoC

Sodiun reacts with water to give alkali solution and hydrogen gas. a) construct a balance chenical reaction for the reaction b) How many moles of sodiun metal react with water to make 45 dm3 of hydrogen gas and a sodiun hydroxide solution

What is the. color for base?

As the speed of a particle increases, does its associated wavelenght increase or decrease

The composition of air by volume is approximately 1/5 oxygen, 4/5 nitrogen. When air is passed through red-hot carbon, the following reaction occurs: 2C + O2 (g) 2CO (g).

How many atomic mass units are equal to 1.672*10-24 g of protons?

What is the name of the compound Sr3N2?

The water softener discussed here relies on precipitation softening also known as ion exchange. based o hte reactants used, what ions would remain in the softened water thaat would be consumed buy the homeowners