Need help please. Miranda and her lab partner add up three masses of chemicals to find the total mass of a mixture. 50.0 g + 7.25 g + 18.22 g
Taking precision into account, write the total mass of the mixture using the correct number of significant figures. Question 2 options:
A. 75
B. 75.47
C. 76
D. 75.5

In which environment would primary succession occur? a forest with a few remaining trees after a recent wildfire an area of exposed rock after a glacier melts away beach that is exposed to the air at low tide an abandoned baseball field in a small town

Select all of the statements which are true. electrons are located in shells or orbits around the atom. electrons orbit slowly around the atom. electrons travel in one flat path around the nucleus of an atom. the valence of an atom is determined by the number of electrons in the atom's outermost shell.

What rule is used to determine how many covalent bonds an element can form? a. the number of covalent bonds is equal to six c the number of covalent bonds is equal to five minus the group number plus the group number b. the number of covalent bonds is equal to eight d. none of the above minus the group number select the best answer from the choices provided