Who discovered that geological changes are cyclical?
a. james hutton
b. nicholas...
Chemistry, 10.10.2019 02:30 lberries08
Who discovered that geological changes are cyclical?
a. james hutton
b. nicholas steno
c. william smith
d. georges cuvier
Answers: 3
Chemistry, 23.06.2019 05:40
Convert a speed of 201 cm/s to units of inches per minute. also, show the unit analysis by dragging components into the unitโfactor slots.
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Chemistry, 23.06.2019 07:30
In a laboratory determination of the atomic weight of tin, a sample of tin is weighed in a crucible. nitric acid is added, and the reaction proceeds to give a hydrated tin(iv)oxide plus no2and h2o. the hydrated tin(iv)oxide is then heated strongly and reacts as follows: sno2.xh2o(s)๏ฎsno2(s)+ xh2o(g)the sno2is finally cooled and weighed in the crucible. explain the effect on the calculated atomic weight of tin that would result from each of the following experimental errors: (a)considerable spattering occurs when the nitric acid is added to the tin.(b)the hydrated tin(iv)oxide is not heated sufficiently to change it completely to tin oxide.
Answers: 2
Chemistry, 23.06.2019 16:00
Which part of the mantle is similar to the crust ? (science earth's layers)
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Chemistry, 23.06.2019 16:30
What does the law of increasing costs say? a. as you make more and more of one good or service, you will also make more and more of another. b.as you make less and less of one good or service, you will also make less and less another. c.as you make more and more of one good or service, you will make less and less of another. d.there is no change in production levels when you shift from one good or service to another
Answers: 1
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Mathematics, 07.07.2019 13:30
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