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A brick falls from a height of 1200 feet. How many seconds will it take to hit the ground?
Which of the following has the greatest vapor pressure?
What are the units of a Newton?
The pumping chambers of the heart are
Which of the following is a meta directing, deactivating substituent when attached to a benzene ring?
12 freight cars are hooked together. The entire weight of these cars amounts to 200 tons; the coefficient of rolling friction is 0.005. The rail bed is level. How fast can an engine of 400 hp pull the string of cars?
How much horsepower is needed to move the train at 45 mi/h?
Calculate the force exerted by the engine.
This organism makes its own food from CO2 and water.
Members of the same _____ show the greatest structural similarities.
In human digestion, fats are hydrolyzed to
starches and sugars
glucagen and glycose
starches and fatty acids
a trisaccharide and a sugar
glycerol and fatty acids
An aldol is the product of
the reaction of a Grignard reagent with an alkyl halide
the condensation of a ketone and ester
the condensation of 2 esters
a thermal conduction between 2 benzyl hydrochlorines
the condensation of 2 moles of aldehyde
A female zygote will develop when the sperm cell carries
a y chromosome
an x and y chromosome
2 x chromosomes
2 y chromosomes
an x chromosome
A 25 kg object is raised 10 meters. How much work is done?
The first stae of embryonic development is the (HINT: 3 distinct germ layers are seen!!!)
Phosgene, a poisonous gas used in World War I, is mainly used in the production of certain polymers today. Ingestion of this gas causes death by:
complexing with hemoglobin faster than oxygen
disrupting the DNA framework by nucleophilic reaction
reacting with water to produce HCl
breaking down cell structure
How many ATPs are produced frome one molecule of pyruvate by the Krebs cycle and electron transport system?
The Golgi apparatus primarily functions in
golgifying stuff, dude
synthesizing protein for secretion
packaging protein for hydrolysis
synthesizing protein for secretion
packaging protein for secretion
Two forces of 10 newtons and 6 newtons act on an object. In order to produce a resultant force of 4 newtons, how many degrees apart must they be oriented with respect to each other?
Hydrolysis of peptide bonds produces
esters or waxes
Which of the following is the weakest acid: NH3, CH3OH, (CH3)2NH, CH3CH2ONa
cannot be determined from the information provided
Which carbohydrate does not have a sweet taste?
they all have a sweet taste
The complement system of the immune response does not
neutralize toxic sites
It does all of these things.
What is the oxidation number of the oxygen in water?
10.0 grams of an unknown hydrocarbon are dissolved in 1.00 kg of cyclohexane. The freezing point of the solution is 5.90 deg. What is the molecular weight of the hydrocarbon? The normal freezing point of cyclohexane is 6.50 deg. and the kf is 20.2
a. What is the pH of an aqueous solution of 0.04 M NaOH? b. What is the pH of an aqueous solution of 4.00 M HCl?
a. 11.62 b. 1.5
a. 13.25 b. -1.2
a. 12.10 b. 0.80
a. 13.98 b. 0.003
a. 12.60 b. -0.60
A boy leaning over a railway bridge 49 ft high sees a train approaching with uniform speed and tries to drop a stone down the funnel. He releases the stone when the engine is 80 ft away from the bridge and the stone hits the ground 3 ft in front of the engine. What is the speed of the train?
The half-life of radon is 3.80 days. After how many days will one sixteenth of the sample remain?
Porins are important in
saturable processes only
The adrenal medulla is most closely associated with ____
none of these responses are reasonable
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