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Chemistry, 30.06.2020 08:01 ayoismeisjjjjuan
Go to phet. colorado. edu/ and search for gas properties (you want the HTML5 version) Or go to https://phet. colorado. edu/sims/html/gas-properties/latest /gas-properties_en. html Select Ideal and nothing should be constant (checkbox). Add some gas with the pump and play with the simulation and answer the following questions. In each case, be very specific about the variables and the molecules and be sure to talk about why the changes are happening considering KMT. a. What happens if the sample’s temperature changes? b. When would we consider it a real gas and what would be different (the simulation doesn’t show it)? c. What happens if you change the volume? d. What happens if you change the pressure? e. When would we consider it a real gas and what would be different (the simulation doesn’t show it)? f. What happens if you change the amount of gas? g. What happens if you change or mix the type of gas?
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Chemistry, 21.06.2019 17:00
Look at the reaction below: ca(hco3)2 --> caco3 + co2 + h2o first, balance the reaction. once balanced, use dimensional analysis or another method to find out how many moles of carbon dioxide will be produced if we start with 16.5 moles of calcium bicarbonate (calcium hydrogen carbonate). = mol of co2 number needs to be reported to three significant figures.
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Chemistry, 22.06.2019 14:00
The two naturally occurring isotopes of chlorine are 35cl (34.969 amu, 75.77%) and 37cl (36.966 amu, 24.23%). the two naturally occurring isotopes of bromine are 79br (78.918 rm amu, 50.69%) and 81br (80.916 amu, 49.31%). chlorine and bromine combine to form bromine monochloride, brcl. 1. how many peaks will be present in a mass spectrum for brcl? the four combinations of molecule possible given these four isotopes are: 81br37cl, 81br35cl, 79br37cl, and 79br35cl. 2. what are the masses of the four different brcl molecules? express the masses using six significant figures, in decreasing numeric order (highest to lowest), separated by commas.
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