Which measurement is expressed to 4 significant figures? Multiple Choicewhich measurement is expressed to four significant figures

Consider the nuclear equation below. 239/94 pu—-> x+ 4/2 he. what is x?

You are making a solution of calcium chloride dissolved in water. you add solid, stir, and it dissolves. you add just a spatula tip full, stir, and the solid does not dissolve. how could you describe the solutions before and after adding the spatula tip amount

What is the mass of 0.46 mol of mgcl2