To check the accuracy of a new method , a standard copper alloy containing 23.24% cu was analyzed and calculated to contain 23.17%. calculate the relative error of the method in parts per thousand (ppt).

Embryos of different species look very similar, which shows that the organisms share a ancestor.

How does a scientist the government? a. the scientist tells people in society what to do. b. the scientist determines the policies that the government spends money on. c. the scientist provides unbiased information to the government. d. the scientist makes laws based on his or her research results.

Write a hypothesis that answers the lesson question, “while observing a chemical reaction, how can you tell which reactant is limiting? ” hypothesis: if a substance is the limiting reactant, then . . because . .