Solve the following mole-mass problem. Refer to the periodic table. How much mass does 0.50 mole of copper contain?

31.775 g

31.78 g

31.8 g

32 g

Large groups of galaxy clusters that appear in sheetlike and threadlike shapes are known as A. radio galaxies. B. superclusters. C. large clusters. D. local clusters.

Select all of the answers that apply. Which of the following are other natural disasters that earthquakes produce? thunderstorms tornadoes tsunamis landslides liquefaction

Which statement is correct regarding the rate of the reaction below? 3A + B 4X + 2Y The rate of disappearance of B is three times greater than that of A. The rate of formation of Y is twice the rate of formation of X.

What is the percent composition by mass of nitrogen in the compound n2h4

How potential energy changes when you pull a magnet off a refrigerator door

Why did Whittaker propose a five kingdom system

Why is melting an ice cube a reversible physical change?

What volume of 0.500 M zinc nitrate contains 2.94 g of zinc nitrate?

Which statement is true about the elements fluorine, chlorine, and oxygen? A. They are all halogens. B. They react easily with metals. C. They are similar to noble gases. D. They are all nonmetals.

What kind of element has the greatest tendency to attract electrons? why?