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an undergraduate student weighed 20g of sodiumcarbonate salt if na23 o16 carbon 12and h1 what is the mole of the
two charges are placed on the x axis one of the charges q1 544c is at x1 300 cm and the other q2 -277c is at x2 900
nasa launches a satellite into orbit at a height above the surface of the earth equal to the earths mean radius the
suppose 587 g of barium acetate is dissolved in 300 ml of a 710 m m aqueous solution of sodium chromatecalculate the
to ward off oceanic invaders a cannon is placed 10 meters from the waters edge pointing out at sea the cannon is
a body is at equlibrium under the action of three forcesone force is 10n acting due east and one is 5n in the direction
questionif 200 ml of 012 m cobaltii nitrate is reacted with 1513 ml of 0097 m sodium phosphate which of the two
marissa is designing a rectangular poster whose width is 23 of its height its perimeter will be 100 inches what are the
you have 275 l of a 656 by volume vvwater-based dye solution calculate the volume of pure dye and water that were used
1 magnesium metal mgs burns brightly in oxygen gas o2g to produce a whitish-grey powder magnesium oxide mgos write a
the circumference of a rear wheel of a carriage is 50 inches more than a front wheel if the rear wheel makes as many
1 how many milliliters of 70 percent ww hclo4nbspmust you dilute with water to prepare a total volume of 1000 ml of 200
hydrogen sulfide decomposes according to the following reaction for which kc 930 10-8 at 700degc2 h2sg 2 h2g s2gif
how many moles are in 8grams of sugar if its in 25 ml of
case studyread the incident scenario and write a response that is at least three pages in length your response must
if i use a ph calculator to find the ph of 035m of citric acid i get a ph level of 232 however when i try to find the
what is the relationship between water osmosis ions blood pressure and kidney functionwhere else in the body are ions
undergoing moderate activity an average person will generate about 350 kj of heat per hourusing the heat of combustion
an electron in a he ion transitions from the n2 state to the ground state what is the frequency of the light
1suppose that 108 g of rubbing alcohol c3h8o evaporates from a 700 g aluminum blockif the aluminum block is initially
1 why do scientists use models of natural sciencea scientists use models of natural systems because these systems are
ammonia may be oxidised to nitrogen monoxidenbsp in the presence of catalyst according to the equation 4 nh3 5 o2
a design on the surface of a balloon is 5 cm wide when the balloon holds 71 cm3 of air how much air does the balloon
how many moles of water will be produced by heating 238g of cobalt ii chloride
a triangle has vertices x22 y42and z34the triangle is enlarged by a scale factor 2 through the originwhat are the