03/10/22

Dilution: Mc X Vc = Md X Vd
In the laboratory, a student dilutes 25.3 mL of a 10.3 M hydrobromic acid solution to a total volume of 150.0 mL. What is the concentration of the diluted solution?Concentration =  M
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03/10/22

Solution Stoichiometry
How many grams of Ag2CO3 will precipitate when excess (NH4)2CO3 solution is added to 67.0 mL of 0.551 M AgNO3 solution?2AgNO3(aq) + (NH4)2CO3(aq) Ag2CO3(s) + 2NH4NO3(aq)
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03/04/22

The flow line symbol represents flow of the flowchart T/F
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03/04/22

How many moles are contained in each of the following at STP?
(a) 23.7 L N2 = __ mol(b) 5.46 L Cl2 = __ mol(c) 0.131 L Ne = __ mol(d) 71.1 mL NH3 = __ mol
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08/22/20

Betelgeuse supernova
people keep saying that the star Betelgeuse may go supernova soon. Isn't the star 700 light years away though? Are we seeing the star live when it goes supernova, or will we be seeing it as it went... more
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08/21/20

There are 360 degrees in a circle. How many arcminutes will be in 96% of a circle?
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08/21/20

Suppose the width of your fist is 3.9 inches and the length of your arm is 30.6 inches. Based on these measurements, what will be the angular width (in degrees) of your fist held at arm’s length?
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