Chemistry, 26.01.2021 01:00, VampireQueen01
Galena is a mineral that creates smooth, flat surfaces when it breaks. It is a 2.5 on Mohs scale. Galena .
A)has cleavage and is soft
B)has fracture and is very hard
C)has fracture and a shiny luster
D)has cleavage and no streak
Answers: 3
Chemistry, 22.06.2019 09:00, heids17043
Chen drew a diagram to compare the ways in which different organisms obtain nitrogen. which label belongs to the area marked z?
Answers: 3
Chemistry, 22.06.2019 21:50, donttrip10
What is a main difference between a mixture and a pure substance? a mixture is only a liquid, but a pure substance can be in any state. a mixture looks the same throughout, but a pure substance does not.1 a mixture can vary in composition, but a pure substance has a set composlo a mixture can be made up of a single compound, but a pure substance car
Answers: 2
Chemistry, 22.06.2019 23:00, lufung8627
Consider the reaction: 2al(s) + fe2o3(s) → al2o3(s) + 2fe(s) the δhf for fe2o3(s) = -824.3 kj/mole. the δhf for al2o3(s) = -1675.7 kj/mole. finish the equation. δhrxn = [(1)( kj/mole) + (2)( kj/mole)] - [(1)( kj/mole) + (2) ( kj/mole)]
Answers: 1
Galena is a mineral that creates smooth, flat surfaces when it breaks. It is a 2.5 on Mohs scale. Ga...
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