PLEASE HELP WILL GIVE Part D
Calculate the following for test tube 1 and for test tube 2, and record the results in the table:
• the number of moles of copper(II) sulfate used (Use 159.60 grams/mole as the molar mass of
copper(ll) sulfate.)
• the heat absorbed by the water, in joules (Use Q = mCat, where 10,0 milliliters of water has a mass of
10,0 grams. Use 4.186 Joules/gram degree Celsius as water's specific heat capacity.)
• the change in internal energy of the copper(II) sulfate (Assume that the energy released by the
copper(ll) sulfate is absorbed by the water.)
• the reaction enthalpy, in joules/mole

1. suppose a reaction mixture, when diluted with water, afforded 300 ml of an aqueous solution of 30 g of the reaction product malononitrile [ch2(cn)2], which is to be isolated by extraction with ether. the solubility of malononitrile in ether at room temperature is 20.0 g/100 ml, and in water is 13.3 g/100 ml. what weight of malononitrile would be recovered by extraction with (a) three 100-ml portions of ether and (b) one 300-ml portion of ether? suggestion: for each extraction, let x equal the weight extracted into the ether layer. in part (a), the concentration in the ether layer is x/100 and in the water layer is (30 x)/300; the ratio of these quantities is equal to k 20/13.3.

What’s the percent by mass of carbon in c10h14n2

Which statement is true about the model of the electromagnetic spectrum a: it change the frequencies of light. b: it compare wavelengths of light. c: the color of light waves can be changed using the model. d: the intensities of light waves can be decreased using the model.