how many moles of oxygen gas are consumed in the production of 5.00 g of iron(III) oxide from metallic iron

Ricky takes out a $31,800 student loan to pay his expenses while he is in college. after graduation, he will begin making payments of $190.66 per month for the next 30 years to pay off the loan. how much more will ricky end up paying for the loan than the original value of $31,800? ricky will end up paying $ more than he borrowed to pay off the loan.

Given: m∠ adb = m∠cdb ad ≅ dc prove: m∠ bac = m∠bca lol

The radius of the earth is two times the radius of the moon. what fraction of the volume of the earth is the volume of the moon?