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Elemental exonium (not a real element) con- sists of two major isotopes Abundance Mass 55% 98 amu 45% 114 amu What is the atomic weight for exonium? Answer in units of amu#question..
How many moles of H3O+ must be added to one liter of a solution to adjust the pH from 8.54 to 5.58? Use E notation and 3 significant figures.
write a balanced equation for the reaction that occurs between the solutes. Calculate the concentration of each remaining ion in solution. Is the resultant solution acidic or basic
The resultant mixture is then evaporated in a kettle to produce a jam contain- ing 67 wt % soluble solids. For a feed of 1000 kg crushed fruit, calculate the kg mix- ture from the mixer, kg water evaporated, and kg jam produced
Gas A has a density of 0.20 g L, and gas B has a density of 0.80gL, both at the same specific temperature and prassure. Which gas diffuse faster
aluminum has the mass of 8.37g. when it is placed in a graduated cylinder containing 20.0mL of water, the water level rose 23.1mL. calculate the density and specific gravitas of the object.
1-Complete the following reaction: Pb-210 decays by emission to form what new necleus? Write the complete nuclear equation.
find the specific solubilities (in g/100g H2O) in both cold and hot water for AgCl, PbCl2, and Hg2Cl2.
Consider the same dilution above for an SN1 reaction. Would the time required for 95% for the starting material to react change as a result of this dilution?
Propose stepwise sythesis of 2-cholor-4-nitrobenzoic acid starting from benzene
Explain what happens to the atomic number of a nucleus when positron emission occurs
What was the percentage by mass of Mg(OH)2 in the original sample? [Hint: When Mg(OH)2 or Al(OH)3 reacts with HCl(aq), the products are a chloride salt, water and CO2(g). Assume that all of the CO2(g) leaves the solution without reacting.]
A 2 cm string is fastened at both sides is plucked. What is the wavelength of the n = 4 standing wave? How many nodes does it contain?
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