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Scientists have evidence that the extinction of the dinosaurs was related to the impact of a large meteoroid or comet with Earth. A key piece of evidence is the existence of a thin layer of
meteoroid material in the rock layers that formed around the time of the extinction What would be an example of additional
, empirical evidence to support the extinction hypothesis?
A finding fossils that had been crushed
B. O finding fossils of early mammals with the dinosaur fossils
C. finding a large crater that dates from the time of the dinosaur extinction
D. finding dinosaur fossils in rock layers younger than the layer with the meteoroid material
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Chemistry, 22.06.2019 10:30
Balance and in which category does it fit in? single or double displacement or synthesis or decomposition? (a) k2 o ā k + o2 (b) na + i2 ā nai (c) cu(no3 )2 + naoh ā cu(oh)2 + nano3 (d) kclo3 ā kcl + o2 (e) ca(no3 )2 + hbr ā cabr2 + hno3 (f) sn(oh)2 ā sno + h2 o (g) p4 + n2 o ā p4 o6 + n2 (h) fe + al2 (so4 )3 ā feso4 + al (i) alcl3 + na2 co3 ā al2 (co3 )3 + nacl (j) c3 h6 + o2 ā co2 + h2 o
Answers: 1
Chemistry, 23.06.2019 00:30
On the periodic table, elements are arranged by which of the following. a. mass numbers. b. increasing atomic number. c. alphabetical order. or d. density
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Chemistry, 23.06.2019 01:40
Calcium carbonate decomposes at high temperatures to give calcium oxide and carbon dioxide as shown below. caco3(s) cao(s) + co2(g) the kp for this reaction is 1.16 at 800Ā°c. a 5.00 l vessel containing 10.0 g of caco3(s) was evacuated to remove the air, sealed, and then heated to 800Ā°c. ignoring the volume occupied by the solid, what will be the mass of the solid in the vessel once equilibrium is reached?
Answers: 1
Chemistry, 23.06.2019 02:00
Which best describes the present-day universe? opaque, expanding very slowly, stars produce heavy elements transparent, expanding at an accelerated rate, stars produce heavy elements opaque, expanding at an accelerated rate, stars produce only hydrogen and helium transparent, expanding very slowly, stars produce only hydrogen and helium
Answers: 1
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Scientists have evidence that the extinction of the dinosaurs was related to the impact o...
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