The carbon dioxide exhaled by astronauts can be removed from a spacecraft by reacting it with lithium hydroxide (lioh). the reaction is as follows: co2 (g) + 2lioh (s) li2co3 (s) + h2o (l). an average person exhales about 20 moles of co2 per day. how many moles of lioh would be required to maintain two astronauts in a spacecraft for three days?

Note the ph and poh values labeled with letters on the ph scale below. based on log rules and the way ph is calculated, what is the difference in [oh– ] concentration between point a and point b. a) 10^1 b) 10^5 c) 10^6 d) 10^7

Agroup of students is studying convection current. they fill two identical balloons with the same amount of helium. one balloon is placed in a freezer and the other is in an area with warm air. after 10 minutes, the balloon are released from a height of 1 meter. which of the following to the students most likely observe? a) the warm balloon expands and rises. the cold balloon shrinks and sinks b) the balloon both rise. the cold balloon is larger than the warm balloon c) the cold balloon expands and rises. the warm balloon shrinks and sinks d) the balloon rise at the same rate. both balloons are the same size

What is the molar mass of a gas that has density of 2.054 g/l