When you buy isopropanol, commonly known as rubbing alcohol, it is a dilution. What volume of isopropanol is in 250 mL of a 70% solution?

In the space, show a correct numerical setup for calculating the number of moles of co2 present in 11 grams of co2

Where are the noble gases located in the periodic table? a. in the center b. on the left side c. in the upper right corner d. on the far right side

Which of the following reactions represents an exothermic reaction? nh3(g) + 12.0 kcal ½n2(g) + 3/2 h2(g) ch4 + 2o2 co2 + 2h2o + 212,800 cal c + 2s cs2, h = 27,550 cal c(graphite) c(diamond), h = 0.45 kcal 2h2o 2h2 + o2, h = +58 kcal