An atom has 17 protons,16 neutrons and 17 electrons. What is it’s atomic number
A:16
B:17
C;33
D:34

Why was the sample heated in step 5? describe the chemical principles involved in the reasoning behind this step?

Four types of motile cells in human body?

Of your good in bio kusing a series of preliminary observations; pstate a problem developed from these observations, formulate a hypothesis, design an experiment to test the hypothesis