Which of these is a major drawback of using fuel cells in a car? A. a lack of hydrogen filling stations
B. a drop in reliance on petroleum products
C. an increase in water vapor into the atmosphere
D. an increase in the use of rechargeable batteries

Write the chemical formula for a compound that is made of an element from group 1 and an element from group 17

Calculate the estimated density of each ball. use the formula d = m/v where d is the density, m is the mass, and v is the volume. record your calculations in table a of your student guide. given that the density of water is 1.0 g/cm3, make a prediction about whether each ball will float in water. record your prediction in table a. what is the estimated density of the table tennis ball? record your answer to the nearest hundredth

How many moles of no2 will form when 3.3 moles of cu are reacted with excess hno3?