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What is the mass in kg of 5.92 x 10^26 H2O molecules? The molecular weight of water is 18.02 g/mole.
A 5.00 L volume of methane gas is cooled from 300 K to 150 K. If the pressure remains constant, what is the final volume
(a) Cl2(g) is added to the system. (b) The reaction mixture is heated. (c) The volume of the reaction vessel is doubled. (d) A catalyst is added to the reaction mixture. (e) The total pressure of the system is increased by adding a noble gas. (f) ..
When heated to 350 at 0.950 , ammonium nitrate decomposes to produce nitrogen, water, and oxygen gases.
An adiabatic turbine expands steam from 500oC , 3.5 MPa to 200oC and 0.3 MPa. If the turbine generates 750 kW, what is the flow rate of steam through the turbine
chemists studied the formation of phosgene by sealing 0.73 atm of carbon monoxide and 0.98 atm of chlorine in a reactor
Is the pH of 100 mL of an aqueous solution containing substantial and approximately equal con- centrations of sodium hydrogensulfite and sodium sulfite closest to a pH of 2, 3, 4, 5, 6, 7, 8, 9, 10, none of these, or cannot be determined
The molecules CO2 and SCL2 are both of the general molecular type AB2, but one is polar and one is not. Which molecule is polar?
Would the ortho: para ratio of nitration of chlorobezene be less than, equal to, or greater than the 38:62 ratio observed with the nitration of bromobenzene. Why.
Explain what is the pH of the solution when 18.30 mL of 0.137 M trisodium hemimellitalate (trisodium benzene 1,2,3, tricarobxylate) is mixed with 25.00 mL of 0.274 M HNO3 to two d.p
a) Write down the balanced half reactions that occurs at each electrode. b) Identify the oxidation state of Pb in each of the species: Pb(s), PbO2(s) and PbSO4.
Problem- The rate constant for the chemical reaction below doubles from 22.5 C to 27.47 C. Determine the activation energy of the reaction. Assume the pre-exponential factor is independent of temperature.
Discussion: Cancer Drugs Target DNA Replication. Explain why Methotrexate treatment of cells can cause misincorporation of uracil into DNA
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