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!
Chemists often use molarity ,M in Moles/liter , to measure the concentration of solutions. Molarity is a common unit of concentration because the volume of a liquid is very easy to measure. However, the drawback of using molarity is that volume is a temperature-dependent quantity. As temperature changes, density changes, which affects volume. Volume markings for most laboratory glassware are calibrated for room temperature, about 20 degrees C. Fortunately, there are several other ways of expressing concentration that do not involve volume and are therefore temperature independent. A mass of .630 g of NaCl is dissolved in 525 g of water. 1. calculate the molality of the solution 2. Calculate the mole fraction of salt in the solution 3. Calculate the concentration of the salt solution in percent by mass 4. Calculate the concentration of the salt solution in parts per million Include units for each
what is the PKa for the acid HA if a solution of 0.65 m and 0.85 M NaA has a PH 4.75
Are the following statements about a 1.0 M solution of a strong acid, HA, true or false? [A-] › [H+]: True/False
Nitrogen dioxide decomposes at 6.50 x 10-3 M s-1 during the reaction: 2NO2(g) --> 2NO(g) + O2(g) Answer the following questions:
The ph of 0.40 M HF(aq) is 1.93. Calculate the change in ph when 0.356 g of sodium fluoride is added to 50.0 ml of the solution .
Ammonia, NH3, can be synthesized by the following reaction: 2 NO (g) + 5 H2(g) -> 2 NH3(g) + 2 H2O(g) Starting with 86.3 g NO and 25.6 g H2, find the theoretical yield of ammonia in grams
A 36.3 mL aliquot of 0.0529 M H2SO4 (aq) is to be titrated with 0.0411 M NaOH (aq). What volume (mL) of base will it take to reach the equivalence point?
How many grams of ammonium sulfate can be produced if 30.0 mol of H2SO4 react with excess NH3 according to the equation 2NH3(aq) + H2SO4(aq) => (NH4)2SO4(aq).
an 8 g sample of a copper ore was dissolved in an acid solution and then reacted with NO3- from a KNO3 salt solution. it required 71.5 ml of a .155 M KNO3 solution to fully react the copper in the ore sample.
Clearly Label the IR Spectrum of Benzoic Acid and assign the following peaks: Broad 3300-2500cm-1 3020 cm-1 1682cm-1 2. Clearly Label the IR Spectrum of Anisaldehyde and assign
Solutions with greatest long-wavelength UVA absorption: Name of strongest UVA absorbing ingredient
How many moles of HNO3 are present in 35.0 mL of a 4.50 M solution of nitric acid?
What volume of pure O2(g), collected at 27°C and 746 torr, would be generated by decomposition of 128 g of a 50.0% by mass hydrogen peroxide solution?
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