Consider the following balanced chemical reaction.

4NH3 + 5O2 → 4NO + 6H2O.

If I start with 1.0 mole of NH3, how many moles of O2 are required?

Show your work for full credit.

Abullet found at a crime scene may be used as evidence in a trial if the percentage of metals match to the composition of metals in a bullet from the suspect's ammunition. a forensic scientist's analysis of the bullet shows that it contains 11.9 g of lead, 0.5 g of tin, and 0.8 b of antimony. what is the percentage of lead metal in the bullet? express your answers to the one's place.

Which type of bond is present in hydrogen sulfide (h2s)? the table of electronegativities is given. a. hydrogen b. ionic c. nonpolar covalent d. polar covalent

When an object falls through the air and encounters air resistance its overall speed will be than if it had not encountered air resistance? (one word answer)