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A student weighs 0.12311 g of Na2CO3 and dissolves it in 50.0 mL of water in an Erlenmeyer flask. How many moles of HCl will be needed to reach the end point of titration?
What is the total pressure in a 16.0 L flask 20.0°C, which contains 0.127 moles of H2 and 0.288 moles of N2
Silver and Gold are exceptions to the rule for transition metals and charge. What is the charge of gold and silver. What color will potassium burn in a flame
the elemental mass percent composition of ascorbic acid (vitamin C) is 40.92% C, 4.58% H, and 54.50% O. Determine the empirical formula
Calculate the enthalpy change, H, for this reaction per mole of X. Ignore any heat transfer to or from the calorimeter.
Estimate the temperature above which this reaction is spontaneous. DS0 = 16.1 J/K. CH4(g) + N2(g) + 163.8 kJ ® HCN(g) + NH3(g)
Many power plants produce energy by burning carbon-based fuels, which also produces carbon dioxide. Carbon dioxide is a greenhouse gas, so over-production can have negative effects on the environment.
Imagine two solutions with the same concentration and the same boiling point, but one has benzene as the solvent and the other has carbon tetrachloride as the solvent. Determine that concentration and boiling point.
Element X has two natural isotopes: X-6 (6.015amu) and X-7 (7.016amu). Calculate the atomic mass of element X given the abundance of X-7 is 92.5%.
what is the compounds molar mass if the density of a gaseous compound of phosphorous is 0.943gl at 474k when its
calculate the equivalent conductance of this electrolyte at the given concentration.the constant of the conductance cell was found to be 44.6 cm-1.
how much sodium carbonate kgday is required to precipitate 60 mgl of non-carbonate calcium in a water treatment plant
The temperature of the calorimeter rose from 25C to 33.73C. If the heat capacity of the calorimeter was 9,630 J/C, what is the value of delta H for the combustion reaction in KJ/mol.
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