Chemistry, 31.08.2019 00:30, WhiteWinterRose
Which gas sample at stp has the same total number of molecules as 2.0 liters of co2(g) at stp?
(1) 5.0 l of co2(g) (3) 3.0 l of h2s(g)
(2) 2.0 l of cl2(g) (4) 6.0 l of he(g)
Answers: 2
Chemistry, 22.06.2019 11:50, trinityrae4657
Acompound has a molecular weight of 12.124 atomic mass units and the empirical formula c3h40. what is the molecular formula of the compound?
Answers: 3
Chemistry, 23.06.2019 03:00, mullerma
Air pressure is measured in pascals. for a professional american football game, the ball should be inflated to about 90,000 pascals. scientists studied the effects of air temperature on the pressure inside american footballs by taking these steps: 1. prepare 100 footballs. 2. measure each football's air pressure. 3. divide footballs into 10 groups. 4. place the groups in different lockers cooled to different air temperatures. 5. after 12 hours, remove the footballs from lockers. 6. measure each football's pressure again. 7. compare the new pressures to the starting pressures. what two terms best describe the variable "air pressure inside the football" in this experiment? independent, qualitative independent, quantitative dependent, qualitative dependent, quantitative
Answers: 3
Which gas sample at stp has the same total number of molecules as 2.0 liters of co2(g) at stp?
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