What coefficient is needed in front of the O2 molecule to balance the following equation? 2 C4H10 (g) + ________ O2 (g) ? 8 CO2 (g) + 10 H2O (l)
A. 1
B. 13
C. 5
D. 8
Answer: B
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During the Silurian, the collision of Gondwana and Laurentia produced the large landmass of
Laurasia. Indicate whether the statement is true or false.
Given that the diameter of the average raindrop is 100 times that of the average cloud droplet, the volume of the average raindrop is about this many times greater than that of the average cloud droplet:
A) 100 times. B) 1000 times. C) 10000 times. D) 1000000 times.
The speed of Earth's rotation is fasted at the poles
Indicate whether the statement is true or false
Judge the following sentence according to the criteria given below: The curling crest in a plunging breaker occurs BECAUSE they are the best waves for surfing
A) The assertion and the reason are both correct, and the reason is valid. B) The assertion and the reason are both correct, but the reason is invalid. C) The assertion is correct, but the reason is incorrect. D) The assertion is incorrect, but the reason is correct. E) Both the assertion and the reason are incorrect.