Diethyl ether is a gas used as an anesthetic. What is the number of moles at STP, if the volume of the gas is 23.1 L?
0.940 mole
0.970 mole
1.03 mole
02.01 moles

True or false, the three major scales used to measure earthquakes are mercalli scale, richter scale and magnitude scale

In 2002, the rare earth elements mine in mountain pass, california was closed because

When 13.3 g koh is dissolved in 102.7 g of water in a coffee-cup calorimeter, the temperature rises from 21.4 °c to 31.53 °c. what is the enthalpy change per gram of koh (j/g) dissolved in the water? * take the density of water as 1.00 g/ml. * assume that the solution has a specific heat capacity of 4.18 j/g*k. enter to 1 decimal place. do not forget the appropriate sign /(+). canvas may auto-delete the (+) sign