4. A gas at 400 K is placed in a 4.0 L moveable piston. The gas

is cooled to 252 K.

a. What is the new volume in the piston?

Which group is likely to react with chlorine to form compounds in the form xcl?

Magma is made up of melted or * blank * materials. A. Intrusive B. Molten C. Extrusive D. Cooled

A radar gun records the speed of a projectile to be 120.090 m/s. How many significant digits are present in this measurement?

What is the mass of 7 moles of Fe2O3

An 8 N force is applied to a 2 kg object. What is the magnitude of the object's acceleration? A. 0.25 m/s² B. 4 m/s² C. 6 m/s² D. 16 m/s²

A substance with a ph of 6 is called

56 Explain, in terms of atomic structure, why the elements in Group 2 have similar chemical properties. 131

What must molecules do to react? a. Molecules must heat up b. Molecules must collide c. Molecules must expand to fill their container d. Molecules must interact with a catalyst

How many pictograms are in a gram?

Which type of signaling pathway uses second messengers because the hormone cannot pass through the plasma membrane? a.) amino acid based b.) lipid based