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Calculate the mass of limestone(CaCO3) that must be decomposed to produce 75.5g of limestone(CaO)
A 1mL aliquot of the diluted digestate was then added to a separate 50mL graduated tube and filled to the 50mL mark. The sample was examined by GFAA and found to contain 15 ppb of lead. Explain how many ug/g of lead are in this soil sample
How does boiling point relate to freezing in this scenario. would the same one with the higher bioling point also have a lower freezing point. why
Draw a Lewis structure for ammonia NH3-.Show all unshared pairs and formal charges, if any. Assume that bonding follows the octet rule.
Depict the organic product produced when 2-methylpropan-1-ol reacts with SOCl2 in the presence of pyrindine.
Find the hydronium ion concentration,the hydroxide ion concentration and the pH of a 0.001 M solution of HCI,if alpha=1 2) Which of salts hydrolize in aqueous solution : CaCO3,Pb(NO3=2,Al2S3?
Calculate the pH of a 3.92×10^-3 M solution of H2SO4. (Ka = 0.0120 for HSO4-) 3-In a 4.66×10^-2 M solution, a monoprotic acid, is 20.4% dissociated. Calculate Ka for this acid
Compute the enthalpy change, , for this reaction per mole of (Assume that the specific heat and density of the resulting solution are equal to those of water [4.18 and 1.00 ] )
The thermogram for the reaction is depicted below. The calorimeter constant is 28.1 J/ Celcius. Both solutions were initially at 21.31 Celcius. Calculate Delta Hrxn for the reaction.
What is the final pressure (atm) of a 3.05 L system initially at 724 mm Hg and 298 K, that is compressed to a final volume of 3.00 L at 273 K
Explain what is the probability of finding an electron anywhere in one lobe of a p-orbital given that it occupies that orbital? Recall-p orbitals come in sets of three.
A 50-lb weight hangs from a string. Find the tensions T1 at 50 degrees and T2 at 30 degrees in the string, and write these vectors in terms of the vectors i and j
Vanadium has two naturally occurring isotopes,V with an atomic mass of 49.9472 amu andV with an atomic mass of 50.9440. The atomic weight of vanadium is 50.9415.
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