Learn more about our help with Assignments: Chemistry
Search & Filtering
A photographic "stop bath" contains 160mL of pure acetic acid. HC2H3O2(1) in 650 mL solution. What is the v/v concentration of acetic acid in the stop bath?
An aerosol can contains gases under a pressure of 4.5 atm at 27 ◦C. If the can is left on a hot sandy beach, the pressure of the gases increases to 4.85 atm. What is the Celsius temperature on the beach?
42.6 ml of KOH was required to titrate 0.137g H2So4. What is the concentration of the solution.
Mix 2 grams of sugar and 5 grams of salt in a beaker. Add 43ml water and stir to disolve solids. What is the concentration of solution in terms of percent w/w(weight/weight) with respect to sugar and salt?
A sample of sand has a volume of 4.46 cm3 and a density of 2.69 g/cm3. What is its mass in grams
Prove N=10pd/E
Identify the reactant oxidized and the reactant reduced in the following equations;
- Cl2(g) + 2 K(s) → 2 KCl(s)
- FeSO4(aq) + Mg(s) → Fe(s) + MgSO4(aq)
- Ni(s) + Pb2+(aq) →Pb(s) + Ni2+(aq)
a standardized aptitude test has a population mean of 110 and standard deviation of 12. what's the probability of obtaining a mean score of 112 with a sample of N=28
write the corresponding half reaction for
(a) Ca(s) + Cu(NO3)2(aq) → Cu(s) + Ca(NO3)2(aq)
(b) Zn(s) + Ni2+ → Ni(s) + Zn2+
What is the oxidation number of nitrogen in the following compounds.
NH3, NH2OH, N2, N2H4, N2O
NH3, NH2OH, N2, N2H4, N2O
