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one kind of electromagnetic radiation has a frequency of 1071 mhz another kind has a wavelength of 212 10-10 m as well
write a 700- to 1050-word paper in which you analyze the effects of ionizing radiation on dna to offer a chemical
explain what is the answer lithium is categorized as an element because it is composed of atoms that1 have the same
find out whether or not each reaction is a redox reaction for those reactions that are redox reactions recognize the
compute the following calculations for each part of the lab showing your work neatly labeling each calculation with a
explain how many moles of magnesium mg are there in 873 g of mg3n2 define how many atoms of mg are in 873 g of mg3n2
the reaction mno2s 4 hclaq rarr mncl2aq cl2g h2ol was being studied 122 g of mno2 were reacted with 700 ml of 250 m
a compound containing carbon as well as hydrogen contains 475 g of carbon and 080 g of hydrogen the molar mass of the
a patient is given 0050 mg of technetium-99m where m means meta stable - an unstable but long-lived state a radioactive
while 20 mol of carbon disulfide as well as 40 mol of chlorine are placed in a 10 l flask the subsequent equilibrium
nitrosyl chloride nocl decomposes to nitric oxide as well as chlorine when heated according to the reaction2nocl g harr
ammonium chloride is placed in a closed vessel as well as allowed to come to equilibrium according to the equation-
amino acids are the building blocks of all the proteins that are found in our body some of these proteins are in turn
finding creative ways to generate energy in a clean manner is an significant area of debate define how we obtain energy
a student examined a 02078g sample containing aspirin using 01014m naoh the student obtained a purity of 761 compute
beaker weight 850gbeaker plus water vinegar and 3g of alka seltzer 123013g the mass after reaction 122130gcompute the
a sample of air at stp is determined to contain 77 nitrogen 21 oxygen 05 water vapor 05 carbon dioxide and 1 of inert
the element gallium ga has the second largest liquid range of any element melting at 2978 oc and boiling at 2204 oc at
a standard serum sample containing 102 meql chloride was examined by coulometric titration with silver ion the
we will let circles blocks and triangles represent atomsdepict two boxesone encloses a mixture of helium and
if a graduated cylinder contains 155 g of water a 110 g piece of iron density 786 gcm3 and a 160 g piece of lead are
if a 1017-g sample of solid sodium bicarbonate the active ingredient in baking soda completely decomposes into solid
if the volume of ocean water calculated above contains 33 percent sodium chloride salt by mass and the density of the
each step in the process below has a 700 yieldch4 4cl2 -gt ccl4 4hcl ccl4 2hf -gt ccl2f2 2hclthe ccl4 formed in the
if the pure substance a freezes at 720degc a solution of 257 g of b b molar mass 1326 gmol and 3428 g of a froze at