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a gaseous hydrocarbon with the empirical formula ch2 was placed in a 200l container at a temperature of 101oc the
you throw a 1 kg rock down a 5m-deep wishing well it hits the water with a velocity of 75 ms how much work did air
an olympic high jumper wants to cross a bar 19 m off the ground while mantaining a velcity of 098 ms how fast does she
you want to propel a 150 kg t-shirt from a spring-loaded launcher to a velocity of 100 ms how far back do you have to
how many moles of helium gas are in a balloon if the temperature of the gas is 150 degc the volume is 15 l and the
define the following types of bonds and how they are formed ester anhydride amide phosphoester phosphoanhydride
explain the oxidation states of carbon particularly relating to alcohols aldehydes and ketones acids and
please describe functional groups and their nomenclature particularly hydroxyl groups carboxylic acids amines amides
space vehicles traveling through earths radiation belts can intercept a significant number of electrons the resulting
when d2 reacts with ethylene in the presence of a finely divided catalyst ethane with two deuteriums ch2d-ch2d is
a cork ball of mass 120 g is placed between two very large horizontal planes of charge the bottom plane has a uniform
a transparent rod 300 long is cut flat at one end and rounded to a hemispherical surface of radius 100 cm at the other
balance the equation for the following reaction in a basic solution give balanced equations for both half-reactions and
in a battery water is used as a salt bridge and the two electrodes are carbon and aluminum find the standard reduction
a car of mass m is on an icy driveway inclined at an angle 160deg as shown in the figurea determine the acceleration
calculate the ph of each of the following strong acid solutions remember in dilution m1v1 m2v2 for part ba 500 ml of
at the end of a wild roller-coaster ride the train of cars must come to a graceful stop at the loading station before
two gases a and b are held at the same temperature one of the gases is diatomic and the other is not it is found that
a suppose a hockey puck slides down a frictionless ramp with an acceleration of 400 ms2 what angle does the ramp make
consider a sample of 35g of water which has an equilibrium vapor pressure of 238mmhg at 250 degc if this sample is
a rock of mass 49 kg accidentally breaks loose from the edge of a cliff and falls straight down the magnitude of the
if you stand on a bathroom scale the spring inside the scale compresses 080mm and it tells you your weight is 680n
a consider a sample of 35g of water which has an equilibrium vapor pressure of 238 mmhg at 250 degc if this sample is
given that each neurotransmitter molecule that diffuses to the surface of an electrode releases two electrons the
at time t 0 and at position x 0 m along a string a rightward x dir travelling sinusoidal wave with frequency of 220