Which environmental conditions contribute most to the spread of bacteria? O A. cold temperatures and low humidity
B. warm temperatures and low humidity
oc, cold temperatures and high humidity
O
D. warm temperatures and high humidity

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

In which reaction is precipitation occurring?

Ascientist measures the speed of sound in a monatomic gas to be 449 m/s at 20∘c. what is the molar mass of this gas?