Which of the following choices is an example of gathering evidence?
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a. writing a paper
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b. taking pictures
c. making memories
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d. talking on the phone
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Maria wants to determine which type of disinfectant kills the most bacteria. which of the following is the best way for maria to determine this? a. ask ten different companies that make disinfectants which type is best. b. put the same amount and species of bacteria on ten identical plates, and add ten different kinds of disinfectant to each plate. c. interview ten different people to determine which type of disinfectant they prefer. d. put the same amount and species of bacteria on ten identical plates, and add a different disinfectant to each plate.

What is the value of the standard enthalpy of formation of an element in its most stable form?

What the blanks in these lines are ?