A) 3900 kg
B) 0.24 kg
C) 240 kg
D) 3.9 kg
E) 0.14 kg
G) B) and D)
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B) False
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False
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A) 18 cm
B) 18.0 cm
C) 18.00 cm
D) 20 cm
E) 20.0 cm
G) A) and D)
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A) Energy is the capacity to do work or transfer heat.
B) Mechanical work occurs when a force acts over a distance.
C) Kinetic energy is the energy possessed by an object due to its position.
D) Potential energy can be possessed by chemical compounds.
E) A compound releases potential energy when it undergoes a spontaneous chemical reaction.
G) B) and E)
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A) Elements are the simplest building block of matter.
B) Elements cannot be broken down into simpler substances even by chemical means.
C) Some elements are not naturally occurring, and have been synthesized by scientists.
D) As the Greeks had thought, water is an element.
E) Elements are classified using a periodic table.
G) A) and C)
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A) gas
B) liquid
C) solid
D) mixture
F) A) and D)
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B) False
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A) observations
B) philosophizing
C) theories
D) hypotheses
E) laws
G) B) and E)
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A) ice < water < hexane
B) hexane < ice < water
C) hexane < water < ice
D) water < hexane < ice
E) water < ice < hexane
G) B) and D)
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A) 0.0576 lb
B) 1.19 × 104 lb
C) 0.922 lb
D) 1.90 × 105 lb
E) 3.60 × 10−2 lb
G) A) and B)
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To determine how many hours it will take to filter the entire contents of the pool, we need to divide the total volume of water in the pool by the flow rate of the pump.
The pump's flow rate is given as 3.00 × 10^5 gallons per hour (gph), and the pool contains 1.30 × 10^3 gallons of water.
Now, we divide the total volume of the pool by the pump's flow rate:
Hours to filter = Total volume of water / Pump flow rate
Hours to filter = (1.30 × 10^3 gallons) / (3.00 × 10^5 gph)
To perform the division, we subtract the exponents in the denominator from the exponents in the numerator (when dividing numbers in scientific notation, you subtract the exponents):
Hours to filter = 1.30 / 3.00 × 10^(3 - 5)
Hours to filter = 0.4333... × 10^(-2)
To express this in standard decimal form, we move the decimal point two places to the left (since the exponent is -2):
Hours to filter ≈ 0.004333...
This means it would take approximately 0.004333 hours to filter the entire contents of the pool. However, this result seems unreasonably short for a pool filtration cycle. It's possible that there was a misunderstanding with the provided numbers, as filtering an entire pool usually takes several hours. Please double-check the values for the pump's flow rate and the pool's volume to ensure they are correct. If the values are indeed correct, then the pool would be filtered very quickly, in just a fraction of an hour.
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A) 0.68 kg
B) 680 kg
C) 5.3 × 10−2 kg
D) 0.85 kg
E) 1.7 × 105 kg
G) All of the above
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A) 6.25 × 10−5
B) 6.25 × 10−4
C) 6.3 × 105
D) 6.2 × 105
E) 6.25 × 105
G) A) and D)
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A) 1
B) 2
C) 3
D) 4
E) 5
G) A) and E)
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A) air
B) light from a candle
C) wax
D) the propellant in an aerosol can
E) a stain on clothing
G) A) and C)
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A) The symbol for solid is (s) .
B) Solids consist of particles that do not move past one another.
C) The particles in a solid are in close contact with one another.
D) Solids can be compressed to smaller volumes.
E) When a solid is heated, the particles begin to move faster.
G) B) and E)
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To convert the length of the sofa from m...View Answer
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A) An iron nail will rust in water.
B) Sugar will dissolve in water.
C) A steak on a hot frying pan will turn brown.
D) Gasoline will burn if ignited.
E) Water can be decomposed to hydrogen and oxygen.
G) A) and B)
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A) 59.25 × 10−4
B) 5.93 × 10−3
C) 5.9 × 10−3
D) 5.925 × 103
E) 5.925 × 10−3
G) C) and E)
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A) 1.74 × 103
B) 1.7400 × 103
C) 1.74 × 10−2
D) 1.74 × 10−3
E) 1.7400 × 10−3
G) A) and D)
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E
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