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Travka [436]
3 years ago
13

Geologic and fossil evidence suggests that all landmasses were once connected in a supercontinent named PangaeaWhat geologic phe

nomenon can exp the change from Pangaea to the current arrangement of continents?
A. Changes in tectonic plate positions

B. Changes in volcanic activity in the oceans

C. Changes in rock weathering and soil erosion

D. Changes in oceanic currents and temperatures
Chemistry
2 answers:
alexdok [17]3 years ago
5 0
The answer is A , hope this helps!
Leni [432]3 years ago
4 0

Answer:

A

Explanation:

continental drift

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3 0
2 years ago
Reacting 35.4 ml of 0.220 m agno3 with 52.0 ml of 0.420 m k2cro4 results in what mass of solid formed
laila [671]
Answer is: 1.29 grams <span>of solid formed.
</span>Chemical reaction: 2AgNO₃(aq) + K₂CrO₄(aq) → Ag₂CrO₄(s) + 2KNO₃(aq).
n(AgNO₃) = c(AgNO₃) · V(AgNO₃).
n(AgNO₃) = 0.220 M · 0.0351 L.
n(AgNO₃) = 0.0078 mol; limiting reactant.
n(K₂CrO₄) = 0.420 M · 0.052 L.
n(K₂CrO₄) = 0.022 mol.
From chemical reaction: n(AgNO₃) : n(Ag₂CrO₄) = 2 : 1.
n(Ag₂CrO₄) = 0.0078 mol ÷ 2.
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m(Ag₂CrO₄) = 1.29 g.

7 0
2 years ago
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