How many grams of sugar (sucrose) are there in 5 liters of sugar water that has a concentration of 0.5 grams per liter of solution?
A. 50 g
B. 25 g
C. 1.5 g
D. 2.5 g
Answer: D
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An earthquake occurred on the Erie fault 5 kilometers beneath San Gabriel. Damage from the earthquake was greatest in nearby Fremont. The farthest report of shaking was recorded in Stockton. Where was the earthquake's epicenter?
- Fremont
- San Gabriel
- Stockton
- The Erie Fault
Oxygen, O2, is certainly good for you. Does it follow that if small amounts of oxygen are good for you then large amounts of oxygen would be especially good for you?
A) Yes. This is the reason patients are given pure (100%) oxygen during medical procedures. B) Yes. Increased oxygenation of the bloodstream is good for you and can increase your life span. C) No. Breathing 100% oxygen for extended periods of time can be damaging to the body. D) No. Large amounts of oxygen will absorb hydrogen from the body and increase the amount of water in the body causing an imbalance in electrolytes.
Solar space heating units tend to be less expensive than solar water heating units because
A) solar heating units can be passive and water heating units must be active. B) it takes longer to heat air than water. C) air has a lower density and is usually less expensive to move than water. D) solar space heating units can be used only near the equator.
According to the kinetic molecular theory, which of the following is not true?
A) Gas molecules are assumed to have no volume. B) Gas pressure is caused by collisions between gas molecules and the container walls. C) When gas molecules collide they stick together. D) None, all of the above are true.