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!
A chemist needs to determine the concentration of a solution of nitric acid, HNO_3. She puts 865 mL of the acid in a flask along with a few drops of indicator. She then slowly adds 0.800 M Ba(OH)_2 to the flask until the solution turns pink, indicating the equivalence point of the titration. She notes that 165 mL of Ba(OH)_2 was needed to reach the equivalence point.
How many moles of HNO_3 are present if 0.132 mol of Ba(OH)_2 was needed to neutralize the acid solution?Express your answer with the appropriate units.
the concentrations of the four main individual ionic compouns are 0.48 M NaCl, 0.090 M MgCl2, 0.0250 M CaCl2 and 0.0050 M KCl. what is the total mass of salt in one liter of seawater?
Decomposition of KClO3 is sometimes used to prepare small amounts of O2 in the laboratory: 2KClO3(s) 2 KCl(s) + 3 O2(g). How many grams of O2 can be prepared from 4.50 g of KClO3?
What is H in kJ for the process of freezing a 28.9 g sample of liquid silver at its normal melting point of 961 oC.
describe the location of the carbon electrons. the answer is 3 unpaired electrons in sp2 orbitals and one unpaired electron in a 2p orbital
Take element Z = 57 from the periodic table. Ionize it 56 times so that there is only one electron left orbiting around the nucleus. What is the ground state energy of the electron
Using the "like dissolves like" rule and the chemical structure of your unknown liquid, explain its solubility/insolubility in water. Describe the type of bonding that your unknown has (covalent, polar covalent)
what is the name and formula for a compound with a composition percent of 77.7% Fe, 22.3% O and a molar mass of 71.85
It required 71.5 mL of a 0.155 M KNO3 solution to fully react the copper in the ore sample. What was the percent copper in the ore.
Two components have boiling points of 130 C and 150 C. Estimate the number of theoretical plates needed to separate these substances in a fractional distillation.
A study of this system reveals that there are 4.0E-3 moles of sulfur dioxide gas, and 4.9E-3 moles of oxygen gas present in a 9.0L flask at equilibrium. The equilibrium constant for this reaction is 4.1E-3. Calculate the number of moles of SO3(g) ..
A student wants to dissolve the maximum amount of CaF2 (Ksp = 3.2 * 10^-11 ) to make 1 Liter of aqueous solution. a) Into which of the following solvents should she dissolve the salt ?
if the density of mercury is 13.6g/cm3, what will be the volume of 300g of mercury ?
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