Justine just added a new rock to her collection. To learn what type of rock it is, Justine wants to calculate the rock's density She first weighs the rock and finds that its mass is 43 g. To find its volume, she puts it in a container filled with 80 mL of water. When the rock is added, the water level changes to 100 mL, which is equal to 100 cm? The diagram below shows the water level change 100 mL 80 mL → + What is the density of the rock? A. 6.14g/cm

B 2.15g/cm

C 0.43

D 0.24​

How many total moles of ions are present in 0.0158 mol of nacl?

Darla claims that the first periodic table developed by mendeleev was not completely accurate, so it is not useful at all. harmony argues that it establish the periodic table we use today, making it more credible. who is correct and why? darla is correct, because a model that has any mistakes should be thrown out. darla is correct, because a good model would not need to change. harmony is correct, because mendeleev’s model had all of the information correct in the first version. harmony is correct, because mendeleev’s model made predictions that came true.

Why is silver chloride is an ionic compound