4Al + 3O2 → 2Al2O3. In an experiment, 10.62g of Al reacts with 13.14g of O2. a. Which reactant is the limiting reactant of Al2O3?
b. What is the theoretical yield of Al2O3?
c. If 19.66g of Al2O3 are produced, what is the percent yield?

20 pts ‼️ an unmanned spacecraft travels to mars. mars has a lower strength of gravity than earth. where in the image is the spacecraft’s weight the greatest?

How many moles of lead are in 1.50 x 10^12 atoms of lead? could you explain the answer as well and not just give it to me i am refreshing for finals and i need to know how to do it

Question 3(multiple choice worth 4 points) (04.04 lc) what does it mean when an element is reduced? it empties a valance shell, reducing its atomic radius. it gains electrons, reducing its overall charge. it increases electronegativity, reducing its ability to bond. it loses electrons, reducing its electron number.