gadolinium oxide, a colorless powder which absorbs carbon dioxide from the air, contains 86.76% gd (atomic number 64) by mass. what is the percent by mass of oxygen in this compound?

Winds are formed from the sun's uneven heating of the earth's atmosphere. the wind patterns are altered by bodies of water, different landforms, and plant cover. because of this, the wind is considered a form of

What are the two main ideas of this passage? museum experts feel that museums must change to attract visitors. museum experts care more about the number of visitors than about history. museums that display artworks and exhibits do not make families welcome. museums like colonial williamsburg make learning about the past fun. museums in the united states are different than in other countries.

Astudent randomly draws a card from a standard deck and checks to see if it's his favorite suite he then returns the cards to the deck