Asolution of cacl₂cacl₂ in water forms a mixture that is 31.0%31.0% calcium chloride by mass. if the total mass of the mixture is 650.5 g,650.5 g, what masses of cacl₂cacl₂ and water were used?

Given that 1 mi = 1760 yd, determine what conver- sion factor is appropriate to convert 1849 yd to miles; to convert 2.781 mi to yards.

The famous scientist galileo galilei did several experiments with sloping planes, which he rolled metal balls down so that he could study motion. by changing the slope, he could study how the speed at which the ball rolled was affected. what was the independent variable in galileo's experiment? a. the speed of the ball b. the slope of the plane c. whether the ball moved d. what the ball was made of

What is a number added in front of a formula in order to balance the equation