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a 35g copper cup contains 89g of drinking water the copper cup is placed into a cooling device consisting of an
a 250-ml sample of 120 m potassium chloride solution is mixed with 150 ml of a 0900 m leadii nitrate solution and this
assume that you dissolve 102 g of a mixture of naoh and baoh2 in 2270 ml of water and titrate with 147mnbsphydrochloric
why does a hydrate exist only as a solid what characteristic of a hydrate is responsible for this
how many water molecules are associated with a single salt molecule in a
1 if congress taxes co2 production at 40 per ton of co2 what is the tax to burn one ton 2000 pounds of coal which is 75
a power plant converts the heat energy in coal to electricity with 35 efficiency transmission losses are 10 a factory
ironiii oxide reacts with carbon monoxide according to the equationfe2o3s3cograrr2fes3co2ga reaction mixture initially
what was the initial energy level of an electron if it was excited by a photon of wavelength 389microm and jumped to an
at rest a person inhales 9721021 nitrogen molecules in an average breath of air how many mole of nitrogen atoms are
use the simulator for the hydrogen atom httpsphetcoloradoeduensimulationhydrogen-atom to estimate the energy needed to
a saturated solution of sroh2aq at 25 degrees celcius has measured a ph of 135 estimate the solubility of sroh2aq in
the density of air at stp is 129gl if your stoppered the250ml flask contains 242ml of wateralso the volume of air it
hydrogen peroxide was catalytically decomoposed and 753 ml ofoxygen gas was collected over water at 25 degrees celsius
how much will the temperature change when 30 g of tooth enamel specific heat 018 calg c absorbs 080 cal of heat
a nutrition facts label on a food package indicates that one serving contains 2 of the recommended daily allowance rda
the combustion of naphthalene c10h8 which releases 51501 kjmol is often used to calibrate calorimeters a 105 - g sample
a chemistry lab experiment requires 674 grams of silvernitrate how many grams of a 155 by mass solution of
at a given pressure and temperature it takes 1987 sec for a 26 l sample of kr to effuse through a porous membrane how
an iron skillet weighing 128kg is heated on a stove to 178degc suppose the skillet is cooled to room temperature 21degc
a glucose is a carbonate that your body can burn for fuel it is 40 percent c and 671 percent h by mass the rest is o
a student prepared a stock solution by dissolving 200 g of naoh in enough water to make 150 ml of solution she then
using data from unfiltered white light and the white light through the yellow filter determine which two colors of
for the reaction 2ch4gc2h2g3h2g knbsp 0170 at 1725nbspc what isnbspkp for the reaction at this temperature express your
the earth receives radiation from the sun at the top of the atmosphere with a spectrum that resembles a blackbody