A student measures the sides of a piece of paper to determine the area of the paper. His measurements are: 5.70 cm length and 10.22 cm width. What is the area of the paper (recorded to the correct number of significant figures)?

2points why do scientists need governmental funding? o a. government politicians ask all the important scientific questions. o b. scientists have to pay taxes to the government on the money they make. o c. the cost of doing scientific research can be very high. o d. the government is controlled by scientists. submit

8) a mixture of he, ne and ar has a pressure of 7.85 atm. if the ne has a mole fraction of 0.47 and 8) ar has a mole fraction of 0.23, what is the pressure of he? a) 4.2 atm b) 3.7 atm c) 5.5 atm d) 2.4 atm e) 1.8 atm

Avariable that is not being directly tested during an experiment should be changed varied experimented controlled