Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
1 A. Is the density of water the same at room temperature (approximately 25 degrees celcius) and 70 degrees celcius? Give the reason for your answer. 1B. Density is an example of intensive physical propery of matter. What does this statement mean?
A student titrated 20.0 mL of 0.410M HCL with 0.320M NaOH. Find the pH, [H3O+], and [OH-] when 21.50mL of titrant has been added.
What volume would be occupied by 100 g of oxygen at a pressure of 1.50 atm and a temperature of 25ºC?
22.4 liters of a gas weighs 70g at S.T.P. Calculate the weight of the gas if it occupies a volume of 20 liters at 27C and 700mm Hg of pressure
A solution is prepared by dissolving 270 g of sucrose (C12H22O11) in 624 g of water. What is the vapor pressure of this solution at 30°C? (The vapor pressure of water is 31.8 mmHg at 30°C.)
How many grams of dry NH4Cl need to be added to 2.50 L of a 0.500 it M solution of ammonia, NH3, to prepare a buffer solution that has a rm pH of 8.99?
Calculate the concentration of ethanol in wine in terms of mass percent and molality. mass percent? answer in % molality? answer in mol/kg
compressed gas cylinder contains 1.00 x 10^3 g of argon gas. The pressure inside the cylinder is 2050 psi at a temperature of 18 C.
The enthalpy of combustion of acetylene C2H2 is C2H2(g) + 5/2O2(g) ->2CO2(g) + H2O(l) H°rxn= -1299 kJ Calculate the enthalpy of formation of acetylene, given the following enthalpies of formation H°f[CO2(g)] = -393.5 kJ/mol ,H°f[H2O(l)] = -285.8 k..
When 24 mL of a 190 mL stock solution containing 1.8 M BaF2 is diluted to 78 mL, what is the concentration of Ba2+ in the new solution?
A 70.6 L constant-volume cylinder containing 7.44 g Hg is heated until the pressure reaches 3.80 atm. What is the final temperature in degrees Celsius?
What structural similarities exist between indigo, tyrian purple, alizarin, picric acid, and the main component of mauveine? The compounds beta-carotene and crocetin are not listed as part of this group
The following reaction is exothermic (H= -226 kJ) and has a rate law: Rate = k(NO2)^2: NO2 + CO ? NO (g) + CO2 (g) for each of the following disturbances, indicate whether the rate of the reaction will be FASTER or SLOWER and indicate whether ther..
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd