How many grams of Lithium are needed to produce 6 moles of Carbon? 4 Li(s) +1 CO2(g) → 2 Li2O(s) + 1 C(s)

Tin has ten stable isotopes. the heaviest, 124sn, makes up 5.80% of naturally occuring tin atoms. how many atoms of 124sn are present in 82.0 g of naturally occurring tin? what is the total mass of the 124sn atoms in this sample?

Which property of a rock remains unchanged by mechanical weathering? a. total surface area b. size and shape c. mineral composition d. sharpness

What element has similar physical and chemical properties as boron.