Answer:
19.
a. 82.98 g/mol
b. 76.139 g/mol
c. 97.94 g/mol
d. 46.07 g/mol
e. 82.07 g/mol
f. 98.079 g/mol
20.
a. 336.24 g/mol
b. 120.366 g/mol
c. 278.1 g/mol
d. 187.56 g/mol
e. 260.5 g/mol
f.
Explanation:
19. Add up each individual atomic mass of each element. You will find this in the bottom of the element's box on the periodic table.
20. Be familiar with transforming names into compounds. After, do the same thing you did in problem 19.
- Hope that helped! Please let me know if you would like a more in-depth explanation.
Answer:
sorry but dorks dont learn maths
Explanation:
just kidding no offense but i think umm 1st one will stay same
i searched google
Reaction of option c produces precipitate.
Rhodium on reacting with potassium phosphate produces rhodium phosphate which remain in solution due to low lattice energy for rhodium phosphate.
Niobium on reacting with lithium carbonate produces niobium carbonate and it will remain in aqueous form.
Cobalt on reacting with zinc nitrate produces cobalt nitrate. This, Co(NO3 )2 is insoluble precipitate and settles at bottom whereas zinc ion will remain in solution as follows:
Potassium ion on reacting with sodium sulfide produces potassium sulfide which remain in solution
The atomic radius decreases as you go across the periodic table while moving from left to right.
Answer:
first is c and second is a