_4_NH3 +_3_02 ---> _2_N2 + __6_H20
How many moles of oxygen react with 0.69 moles of NH3?

Use examples from the article to explain one positive and one negative effect that chemistry has had on society.

Suppose a lab group reports a ppercent yield of sand of 105. is it really possible to collect more sand than was originally represented? what is the possible explanation for the extra product?

Using the thermodynamic information in the aleks data tab, calculate the standard reaction free energy of the following chemical reaction: →+p4o10s6h2ol4h3po4s round your answer to zero decimal places.