Balance the equation and identify the type of chemical reaction. Respond with the correct coefficients... (Remember, if you don't put a coefficient in,
then it is a 1.)
__MgCl2 + __Al2(SO4)3
--> __MgSO4 + ___AlCl3
O 2, 1, 2, 3 single displacement
O 2, 1, 2, 3 double displacement
O 3, 1, 3, 2 single displacement
O 3, 1, 3, 2 (double displacement)

In order to calculate the amount of heat transferred you must know the __ and specific heat of the material, as well as the change in temperature. a. volume b. density c. mass d. enthalpy

The chart shows the bid provided by four contractors to complete a job. which contractor is the most cost-effective?

Two people each hold the end of a rope and create waves by moving their arms up and down. this wave is best classified as a transverse wave because a) both the rope particles and the wave are moving in the same direction. b) the wave is moving up and down as the particles of the rope move horizontally. c) the wave is moving horizontally as the particles of the rope move up and down. eliminate d) the wave is moving in a parallel direction with the motion of the person's arms.