Based on Figures 1 and 2, for a given mass of O2 at 22°C, how does the pressure exerted by
A.as great as in the 3 L vessel.
B.the same as in the 3 L vessel.
C.2 times as great as in the 3 L vessel.
D.4 times as great as in the 3 L vessel.
A.as great as in the 3 L vessel.
B.the same as in the 3 L vessel.
C.2 times as great as in the 3 L vessel.
D.4 times as great as in the 3 L vessel.
第1题
B, Algol B produced the majority of its energy by fusing:
A.hydrogen nuclei to make helium nuclei at its center.
B.hydrogen nuclei to make helium nuclei in a shell surrounding its center.
C.helium nuclei to make hydrogen nuclei at its center.
D.helium nuclei to make hydrogen nuclei in a shell surrounding its center.
第2题
volume of titrant added?
A.0.50 mL
B.1.00 mL
C.1.50 mL
D.2.00 mL
第3题
onth period was:
A.less than 50 μg/m2.
B.between 50 μg/m2 and 75 μg/m2.
C.between 75 μg/m2 and 100 μg/m2.
D.greater than 100 μg/m2.
第4题
X on Sphere Y compare to the magnitude of the electrical force exerted by Sphere Y on Sphere X ?
A.The magnitude of the electrical force exerted by Sphere X on Sphere Y was greater than the magnitude of the electrical force exerted by Sphere Y on Sphere X.
B.The magnitude of the electrical force exerted by Sphere X on Sphere Y was less than the magnitude of the electrical force exerted by Sphere Y on Sphere X.
C.The magnitude of the electrical force exerted by Sphere X on Sphere Y was the same as the magnitude of the electrical force exerted by Sphere Y on Sphere X.
D.Cannot be determined from the given information
第5题
at were breeding III. Adults that were not breeding
A.I only
B.III only
C.I and III only
D.I, II, and III
第6题
umber of ZABs present in the stack of 3 batteries was increased. Do the results of Trials 1 and 3 support this prediction?
A.Yes, because the final volume was reached sooner in Trial 3 than it was in Trial 1.
B.Yes, because the final volume was reached sooner in Trial 1 than it was in Trial 3.
C.No, because the final volume was reached sooner in Trial 3 than it was in Trial 1.
D.No, because the final volume was reached sooner in Trial 1 than it was in Trial 3.
第7题
In the 2 studies, the purpose of oven-drying the mixed soil was to remove all the:
A.moisture.
B.organic matter.
C.soil test N.
D.amino sugar N.
第8题
l the average speed of the block increase or decrease, and why?
A.Increase, because the weight of the block will increase.
B.Increase, because the weight of the block will decrease.
C.Decrease, because the weight of the block will increase.
D.Decrease, because the weight of the block will decrease.
第9题
om which of the tree species in Plot X and Plot Y, respectively?
A.red maple;red maple
B.red maple;white ash
C.white ash;red maple
D.white ash;white ash
第10题
ed at which the plane is going. Which
of the following would be a logical adjustment of the wing for such jets?
A.At speeds above 500 mph, the top of the wing would become flatter.
B.At speeds above 500 mph, the top of the wing would become more curved.
C.At speeds above 500 mph, the bottom of the wing would become curved.
D.None of the above
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