8) In science lab, Sue estimated that there were 140 amoebas under her microscope, but there were actually 150. What was the percent error of her estimate?

A) 6.7%

B) 8.3%

C) 9.4%

D) 10%

Which of these is a pure substance: sodium metal, solid sodium chloride, sodium chloride dissolved in water?

Which organism is a producer? mouse snake grass owl

All of the statements are true about the arrangement of elements in the periodic table except that the a. inert gases are in the group farthest to the right. b. metals are found on the left side of the periodic table. c.

What is the biggest source of vitamin D

How are inner and outer planet differt?

Trisha and her lab partner filled a beaker with 150 milliliters of a 0.10 M HCl solution. How many moles of HCl are in the beaker? Remember, molarity = moles liter.

Why is the correct name of compound Silicon Pentoxide and NOT Silicon Pentoxide?

10. The density of aluminum is 2.7 g/cm². A 27g piece of aluminum will have what volume?

Which type of heat transfer involves the movement of warmed material? A. radiation B. conduction C. convection

During which stage of the cell cycle dies the cell condense chromosomes and break down the nuclear envelope