A 745 mL gas sample at STP is compressed to a volume of 194 mL, and the temperature is
increased to 21◦C. What is the new pressure
of the gas in Pa?
Answer in units of Pa.

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

An atom with 7 protons, 6 neutrons, and 7 electrons has an atomic mass of amu. (enter a whole number.) numerical answers expected! answer for blank 1:

Draw the aromatic compound toluene (methylbenzene). show all hydrogen atoms, including those on the ring.