A. calculate the mass percent of nahco3 based on the manufacturer's list of ingredients: 325mg aspirin, 1000 mg citric acid, 1916 mg nahc03 .

Two friends at different locations want to communicate with each other by sending low energy signals. which of the following methods can they use to communicate? a) produce x-rays using colliding electrons and send them to radios, which capture sound b) send messages using infrared radiation, which travel in the form of waves c) send radio waves through intervening media like radio and television d) produce sound waves using microwaves from heated objects

According to the tide table below what time of day will the highest tide occur? (2 pt) the highest tide will occur at

Ascientist measures the speed of sound in a monatomic gas to be 449 m/s at 20∘c. what is the molar mass of this gas?