two chemicals at room temperature were mixed together in a flask. a chemical reaction occurred, and afterward the flask felt warm to the touch.
what kind of reaction must have occurred in the flask?
a. organic
b. synthetic
c. exothermic
d. endothermic

What are the genotypic and phenotypic ratios

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

Aweight lifter raises a 1600 n barbell to a height of 2.0 meters. how much work was done? w = fd a) 30 joules b) 3000 joules c) 320 joules d) 3200 joules