50 mL of water (density = 1.00 g/mL) are added to 50 mL of alcohol (density = 0.80 g/mL), producing a mixture with a volume of 95 mL. What can be said about the density of the mixture? t must equal the average density of the two liquids.

It must be greater than the average density of the two liquids.

It must be smaller than the average density of the two liquids.

none of the above

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Which of the following describes a situation where competition between producers exists

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