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The diameter of a neutral helium atom is about 1x10 pm.suppose that we could line up helium atoms side by side in contact with one another. approximately how many atoms would it take to make the distance 1cm from end to end.
Classify the following pair of compounds as the same compound, enantiomers, diastereomers, constitutional isomers, or not isomeric. Also, select the correct IUPAC name
Predict whether the following compounds will undergo the benzoin condensation, faster, slower than benzaldehyde, or give no reaction
What causes the heating that is seen in the thermosphere? What causes the heating that is seen in the stratosphere? What is the biological importance of ozone in the stratosphere?
The solubility of a gas in H2O at a temperature of 25 °C and a pressure of 1.2 atm is 0.042 M. What will the solubility of the same gas be in H2O at the same temperature at 3.4 atm.
What is the pH of a buffer system that contains 0.240 M hydrocyanic acid HCN and 0.190 M sodium cyanide NaCN? The pKa of hydrocyanic acid is 9.31.
The presence of carcon- carbon double bonds in eugenol can be tested using the bromine water test. write a balance equation for the reaction involved in this test.
It then gives off a photon having a wavelength of 4.10 × 102 nm. What is the final state of the hydrogen atom? Values for physical constants can be found here.
What it the chemical reaction between silver ion and excess ammonia.
Imagine that you have two iron blocks, one with a mass 226 g at a temperature of 46.0 oC, and another with a mass 380 g at a temperature of 134 oC. The two blocks are brought into contact with each other in an insulated container. What is the fina..
below, 8.34 atm each of H2 and Br2 were placed into a 1.00 L flask and allowed to react: H2(g) + Br2(g) 2 HBr(g) Given that Kc = 86.7, calculate the equilibrium pressure of Br2.
What is the molarity of Cl- in a solution made by mixing 37.5 mL of 0.100 M NaCl with 54.0 mL of 0.100 M KCl?
What volume of 0.2500 M cobalt(III) sulfate is required to react completely with a) 25.00 mL of 0.0315 M calcium hydroxide?
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