Which of the following best explains why the alkali metals have similar chemical properties? Choose 1
They are in the same period of the periodic table and so have the same number of valence
electrons.
B
They are in the same period of the periodic table and so have the same atomic number.
They are in the same group of the periodic table and so have the same number of valence electrons.
They are in the same group of the periodic table and so have the same atomic nu

When a comet collides with earth, it adds material to our planet and causes great damage. therefore, a collision like this is a a. destructive force b. constructive force c. geologic process and event d. constructive and destructive force

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.

Calculate the mass of carbon in 97.0 g of sucrose c12h22o11