A6.70-g sample consisting of a mixture of silver nitrate and sodium nitrate is dissolved in water. this aqueous mixture then reacts with aqueous barium chloride to form 3.60 g of silver chloride. calculate the percent by mass of silver nitrate in the first mixture.

Dylan and dusty plan to take weekly surfing lessons together. if the 2-hour lessons are $20 per person and they plan to spend $100 each on new surfboards, what is the maximum number of lessons the two can take if the total amount spent for lessons and surfboards is at most $480?

Vinay constructed this spinner based on the population of teachers at his school according to vinays model what is the probability that he will have a male history teacher two years in a row

Awindow washer cleans 42 windows in 2 hours. at this rate, how many windows did he clean in 180 minutes.