Questions by Pphoenix

Questions by Pphoenix

How many moles of nitrogen are in 3.7 moles of C8H11NO2?

asked Jun 6, 2019

2 answers

4 votes

51.4k views

Some species of hummingbirds appear to hover in mid-air by flapping their tiny wings 80 times per second. How many times per minute do hummingbirds flap their wings?

asked May 2, 2019

1 answer

1 vote

84.4k views

some materials, when mixed with water, will change properties and dissolved. the rate at which a substance dissolves in water can be altered by which of the following

asked Mar 14, 2019

1 answer

2 votes

58.0k views

What perceptions changed in Europe that led to the Renaissance?

asked Apr 19, 2018

1 answer

4 votes

82.3k views

How many light years across is the milky way?

asked Mar 21, 2018

1 answer

4 votes

22.9k views

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