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a woman whose weight is 530 n is poised at the right end of a diving board with length 4 m the board now has a weight
from a cliff that is 95 m above a lake a young woman mass 5 41 kg jumps from rest straight down into the water at the
match the situations listed to the proper type of experimental error and please explain whya random error b systematic
what conditions must occur for two atoms to be isotopes how is average atomic mass
a light ray travels through medium 1 index of refraction n1 11 into medium 2 index of refraction n2 16 figure 1at
in vacuum the wavelength of the light in your laser pointer is 538 nm standing at the shore of a calm pond you shine
you shine a laser pointer at an angle of 50 from the normal onto the surface of a thick block of glass for which the
you want to see how your new belt buckle matches your new hat your eyes are 128 mm below the top of the hat and 800 mm
examine the following reaction5fecl2aq kmno4aq 8hclaq rarr 5fecl3aq mncl2aq kclaq 4h2ola indicate the oxidation
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if the atmospheric pressure at 300 km is 280 torr and the temperature is -440 degc what is the volume of the balloon
the black oxide of iron fe3o4 occurs in nature as the mineral magnetite this substance can also be made in the
a chemistry student obtained a yield of 380 g of h2ol at room temperature from the reaction of 160 g h2g with 100 g o2g
what is the empirical formula of a compound containing c h and o if combustion of 123 g of the compound yields 18 g co2
a student wants to prepare 100 l of a 100 m solution of naoh molar mass 4000 gmol 531 if solid naoh is available how
chemical a decays over time as a second order reaction if the concentration after a time of 250 seconds is 0063 m and
determine the direction in which the following reaction is spontaneous at 25 degrees mg2aq ks lt--------gt mgs kaq
cyclopropanenbspc3h6reacts to form propenenbspc3h6nbspin the gas phase the reaction is first order in cylclopropane and
currently taking a chemistry class and i am having a hard time finding out the diiference between matter and energy
lets just consider the concept of stoichiometry without any confusing chemicals here is a generic equation 2a 6b rarr
calculate change in h change in s and change in g for the following reactions that produce acetic acidch4g co2g----to
a bomb-type calorimeter is used to measure the heat evolved by the combustion of glucose c6h12o6 write the balanced
what is the ph of a solution that results from addition of 100 ml of 1 m hcl a strong acid with 100 ml of 1 m naoh a