) A buffer solution is made by mixing 27.0 mL of 0.14 M HCN with 33.0 mL of 0.095 M NaCN. Calculate the pH of the solution. Determine the change in pH of this solution if 12.0 g of NaCN were added to the resulting solution (Assume no volume change when the salt dissolves).
1. Toluene, C6H5CH3, is oxidized by air under carefully controlled conditions to benzoic acid, C6H5CO2H, which is used to prepare the food preservative sodium benzoate, C6H5CO2Na. What is the percent yield of a reaction that converts 1.000 kg of toluene to 1.21 kg of benzoic acid? 2 C6H5CH3 + 3 O2 ⟶ 2 C6H5CO2H + […]
1.Describe the subatomic particles that make up an atom. Include their charge and any contributions to atomic mass (AMU). 2.What subatomic particle is responsible for the Atomic number? 3.Which subatomic particles contribute to atomic mass? 4.What is an Isotope? 5.Which subatomic particles contribute most directly in chemical bonding? 6.Describe covalent bonding. What is the difference […]
– A very short and simple first year chemistry experiment of Chemical Detective work – Page 5,6,9,10 only needs to be filled for the experiment – First attachment is for the Experiment requirements and second file is the data
Maya made this picture to represent a chemical reaction: The two overlapping circles Maya made this picture to represent a chemical reaction: There are two overlapping circles on the left, one white and the other with vertical lines. It is labeled ZX. There is a gray circle labeled Y Maya made this picture to represent […]
Look at attached files, Can anyone handle the assignment? It’s a research paper.
Find the density of a block with the measurements h = 2.63 cm, w= 1.34 cm, h = 2.57 cm, and mass = 63.22 g. Round your answer to the correct number of sig figs
Calculate the ionization energy (eV) for a ‘hydrogen-like’ atom with one electron and Z = 3 from the excited state of n=2.
Zn + CuCl2 = ZnCl2 + Cu 2) Based on this equation, how many moles of copper atoms should be produced per mole of zinc atoms reacted? 3) Based on the actual number of grams of zinc that reacted in your experiment, what is the number of moles of zinc atoms that actually reacted? Using […]
The concentration of an H2C2O4 solution is determined by titrating it with a 0.1968 M solution of permanganate. The balanced net ionic equation for the reaction is shown below.In one experiment, 24.98 mL of the 0.1968 M MnO4- the solution is required to react completely with 20.00 mL of the H2C2O4 solution. Calculate the concentration of the H2C2O4 solution.
