Chemistry, 21.01.2021 03:50, claudia122752
A sample of crushed rock is found to have 4.81 x1021 atoms of gold, how many moles of gold are present in this sample?
7.99 x 10^-3 moles
1.57 x10^-1 moles
1.25 x 10^3 moles
2.47 x10^5 moles
Answers: 3
Chemistry, 21.06.2019 22:00, NREYESLDS2806
To save time, you can approximate the initial mass of the solid to the nearest ±1 g. for example, if you are asked to add 14.3 g of copper, add between 13 g and 15 g. which of the following sets include two samples with an equal density? which all that apply below 15.4 g gold and 18.7 g silver 15.2 g copper and 50.0 g copper 20.2 g silver and 20.2 g copper 11.2 g gold and 14.9 g gold
Answers: 1
Chemistry, 21.06.2019 22:30, larreanathalie3523
The diagram shows the structures of horse and cat forelimbs. what does the diagram suggest about the evolutionary relationship between these two mammals? a. they have homologous structures, indicating a common ancestor. b. they have analogous structures, indicating a common ancestor. c. they have homologous structures, indicating that they do not have a common ancestor. d. they have analogous structures, indicating that they do not have a common ancestor.
Answers: 2
Chemistry, 22.06.2019 11:00, justarando
Which element would mostly likely have an electron affinity measuring closest to zero
Answers: 3
A sample of crushed rock is found to have 4.81 x1021 atoms of gold, how many moles of gold are prese...
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