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 50.0 mL water sample required 5.14 mL of 0.0100 M Na2H2Y to reach the endpoint for the titration procedure described in this experiment.
a. Calculate the moles of hardneing ions in the water sample.
b. assuming the hardness is due exclusively to CaCO3, express the hardness concentration in mg CaCO3/L sample.
c. What is this hardness concentration expressed in ppm CaCO3?
2. THe hardness of a water sample is known to be 500 ppm CaCO3. IN an analysis of a 50 mL water sample, what volume of 0.0100 M Na2H2Y is needed to reach the endpoint?
The standard electrode potential for the reduction of Ni2+ to Ni is 0.25v. Would the potential of a nickel elctrode immersed in a 1.00M Naoh solution saturated with Ni(OH)2 be more negative than E Ni2+/NI or Less. Explain.
Three Introductory Chemistry students each measured 50.0 mL of 1.0 M NaOH into "double-walled" styrofoam cup calorimeters. Then, Sue added 50.0 mL of 1.1 M HCl to her NaOH solution
Iodine-131 decays to produce xenon-131. Which type of nuclear radiation is emitted in this reaction
What is the concentration of the hydroxide ion given that the concentration of the hydronium ion is 1.5 x 10^-5 M
what is the concentration of the dye in a solution with a percent transmittance reading of 45.8% at 640 nm
A welder's acetylene tank has a volume of 75.0L. It is stored at a temperature of 23.24 degrees C and has a pressure of 7667kPa. How many moles of acetylene are in the tank
a sample of propanec3h8 contains 10.8 moles of carbon atoms. how many total moles of atoms does the sample
What is the empirical formula for an prganic compound whose percentage composition is 40.0% carbon
Various types of medicines use in daily life? and classify them into analgesics, antipyretics, antibiotics, sedatives, antiseptics.
Find the appropriate equilibrium constant (Kp) for the reaction below under the following conditions. 1/2 SNO2(s) + H2(g) H2O(g) + 1/2 Sn(s)
Explain What would be the effect on your calculated mass percent recovery Cu if you used all your NaOH solution in part ll and the litmus paper never turned blue
what is the depth below the surface at which the concentration is 1016 atoms/cm3 if the surface concentration is maintained at 1018 atoms/cm3? Use D = 2 x 10-12 cm2/s for aluminum diffusing in silicon at 1100?C.
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