What is the mass of 251 ml of oxygen gas if its density is 1.43
g/mL?

Scientist wants to react a barium chloride salt with an acid. to speed up the reaction, the scientist crushes the barium chloride salt until it is a fine powder. this speeds up the reaction by a. increasing the ph of the salt. b. increasing the surface area of the salt. c. increasing the pressure of the salt. d. increasing the temperature of the salt. im thinking more a not 100% sure

Which of the following is a physical property flammability heat of combustion solubility and toxicity

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