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Acetylene gas (C2Hs) is produced as a result of the reaction CaC2(S)+2H2O(l)-> C2H2(g)+Ca(OH)2(aq). if 27g of CaC2 are consumed in this reaction, how much H2O is needed?
Consider the titration of 50.0 mL of 0.20 M NH 3 (K b =1.8×10 ?5 ) with 0.20 M HNO 3 . Calculate the pH after addition of 50.0 mL of the titrant.
Why is the temperature 60 instead of 328K?
Calculate the molalities of the following aqueous solutions. (a) 2.26 M sugar (C12H22O11) solution (density of solution = 1.12 g/mL) m (b) 0.93 M NaOH solution (density of solution = 1.04 g/mL) m (c) 5.64 M NaHCO3 solution (density of solution = 1..
Explain why cis dichloroethene has a boiling point of 60 degrees C while trans - dichloroethen has a boiling point of 48 degrees C.
Which one of the following is a redox reaction?
a sample of nitrogen occupies a volume of 600 ml at 60 celcius and 650 mm hg of pressure. what will be its volume at stp?
calculate the concentrations of all species in a 1.62 m na2so3 sodium sulfite solution. the ionization constants for
Draw on a P-V diagram the following processes. Label accurately each point in the four steps of the cycle using p,V,T for variables e.g. Va. The working substance is a perfect gas. Start from A. Show direction of change using arrow heads.
Solid aluminum reacts with aq H2 SO4 to form H2 gas and aluminum sulfate. when a sample of Al reacts, 425 mL of H2 gas is produced at 24 degree celsius at a press of 744 mmHg. How man grams of Al reacted?
Propose the kinds of attractive forces that might bind congo red to cotton fabric.
what is the mass in grams of a single atom of Ru. The answer is supposed to be in scientific notation as in blank time ten^ blank. I kinda have an idea but not sure
The mercury in a .8142g sample was precipitated with excess of H5IO6. The precipitate was filtered and washed free of the precipitating agent, and .4114g was recovered. Calculate the % of Hg2Cl2 in the sample
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