if a sample if pure sodium bas a mass of 8.2 grams and sodium has an average atomic mass of 22.99 g/mol, how many sodium atoms are there in the sample?

Why dont we use words like provr or does not prove in science

A 20 N force is applied to an object with a mass of 100 kg. What is the acceleration of the object? O O A. 0.2 m/s2 B. 120 m/s. 120 m/s2 O C. 80 m/s. 120 m/s2 O D. 5 m/s. 120 m/s2

What is the molality of a solution in which 55g of sucrose are dissolved in 950mL of water?

Physical or chemical property sugar turns black when heated.

What was thompson working with when he discovered the cathode rays?

What is the atomic weight of a hypothetical element consisting of two isotopes, one with mass = 64.23 amu (26.0%), and one with mass = 65.32 amu? (a) 65.3 amu (b) 64.4 amu (c) 64.9 amu (d) 65.0 amu (e) 64.8 amu

Is this base a physical or chemical property?

Classify each of the following aqueous solutions as a nonelectrolyte, weak electrolyte, or strong electrolyte. a) LiClO4 b) HClO c) CH3CH2CH2OH d) HClO3 e) CuSO4 f) C12H22O11

Give examples of temporaty physical change

Which of these is a source of sediment? A. Fragments of other rocks B. Chemicals and Minerals dissolve in water C. Sea shells D. All of the above