PLEASE HELP When Li2CO3 & H2SO4 ard combined, what happens?

A. nothing
B. A gas & Liquid are produced
C. A precipitate is formed

B) A gas and liquid is produced.

Explanation:

In the reaction, H2SO4 + Li2CO3 -> Li2SO4 + CO2 + H2O, bubbles of carbon dioxide gas (CO2) are produced. ... This is an example of a carbonate-acid reaction, which in itself is a double-replacement reaction followed by a decomposition reaction.

Hope it helps.

number of molecules / avogadro's number * molecule molecular = mass

explanation:

we define a gram-molecular weight as the mass of one mole of any element or compound. a mole contains avogadro's number of units (molecules) –  

6.022

x

10

23

. so, dividing the number of molecules by avogadro's number gives us the number of moles. multiplying that by the molecular weight gives us the mass. from the periodic table we find the gram-molecular weight of u to be238 and of f to be19. so,  

u

f

6

will have a gram-molecular weight of 352g.

a:

by the combination of an unlimited number of elements