A hot sun warms the surface of a lake on a calm day. What will happen to the cold water at the bottom of the lake? A: The cold water at the bottom will rise up and mix with the warm water at the top.
B: The warm water at the top will sink down and mix with the cold water at the bottom.
C: The cold water will remain at the bottom and won't mix very much with the warm water at the top.
D: Both A and B are true.

Read the given expression. x = number of protons − number of core electrons which of the following explains the identity of x and its trends across a period? x is the effective nuclear charge, and it remains constant across a period. x is the screening constant, and it remains constant across a period. x is the effective nuclear charge, and it increases across a period. x is the screening constant, and it increases across a period.

If 10.g of agno3 is available, what volume of 0.25 m agno3 can be prepared

What does the cell nucleus do or, how does it function?