Dee adds five grams of a chemical to one liter of liquid and observes a reaction. If the reaction is endothermic, what
will happen?
A. The volume of the liquid will increase.
B. The volume of the liquid will decrease.
C. The temperature of the liquid will increase.
D. The temperature of the liquid will decrease.

Ahypothrticalax type of ceramic material is known to have a density of 2.10 g/cm3 and a unit cell of cubic symmetry with a cell edge length of 0.57 nm. the atomic weights of the a and x elements are 28.5and 30.0 g/mol, respectively. on the basis of this information, which of the following crystal structures is (are) possible for this material: sodium chloride, cesium chloride, or zinc blende

Match the mixture with the substance// i really need on this guys (it’s a pic btw)

When a device is used in a circuit in which the voltage is 81 v the current flowing through the device is 3 a what is the resistance of the device