Who was in control of Afghanistan when the U. S. and Allied forces invaded it in 2001?

A. al-Qaeda

B. the Taliban

C. the Ba'ath Party

D. the Mujahadeen

How many fluorine atoms bond with calcium to form calcium fluoride?

Toy balloons are filled with hydrogen gas, at standard temperature, from a 10.0-liter cylinder. the initial pressure of the gas in the cylinder is exactly 100 atm. assuming each balloon is filled to a volume of 1.

What keeps wind from blowing in a straight line from the south pole to the equator?

To double the average kinetic energy of helium atoms in a balloon at 27 °C, the temperature of the gas must be

What is the relationship between a compound and the elements it is made from? The compound takes on a mixture of properties from the elements. The compound takes on the properties of the stronger element.

1. When adding strong base to a buffer, why can we assume the equilibrium value of the OH - is zero?

When acid (X) reacts with base (Y) to produce Mg3 (PO4) 2 - what are X and Y

During mitosis, one cell creates: one identical cell two identical cells one non-identical cell two non-identical cells

True or false : A glacier can only form in an area where more snown falls than melts

An element belongs to group 9. what common name might be used to describe the group to which this element belongs?