element F molar mass (g/mol) 19.00. Element Sr molar mass (g/mol) 87.62. using the information in this table, calculate the number of formula units in a 33.8 g sample of strontium fluoride (SrF2)

Which characteristics can be used to differentiate star systems? check all that apply.

Which of the following is a conclusion that resulted from ernest rutherford’s scattering experiment? (will mark brainliest) a. the nucleus is negatively charged b. the atom is a dense solid and is indivisible c. the mass is conserved when atoms react chemically d. the nucleus is very small and the atom is mostly empty space

Use the drop-down menus to label each of the following changes p for physical change and c for chemical change. the substance changes to a new substance. the original substance can be recovered. the color changes. gas is produced and given off. the substance changes size, shape, or volume.