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If you mix 50mL of 0.34M HCN with 100mL of 0.17M KOH what is the pH of the resulting solution. (Ka=4.0 x 10^-10)
A voltaic cell is set up at 25º C with thefollowing half cells: Al3+ (0.0010 M) | Al and Ni2+(0.50 M) | Ni. Write an equation for the reaction that occurs when the cellgenerates an electric current and determinethe cell potential.
Compute the number of moles of sodium hydroxide ( NaOH ) in 23.75cm 3 of 0.150moldm -3
The water level in a graduated cylinder initially at 220 rises to 279 after a piece of lead is submerged. What is the mass in grams of the lead.
Calculate the molar enthalpy of combustion of Phosphorous when this combustion process was carried out under the constant pressure?
Determine what would be the concentration of the final solution If you take a ten mili litres portion of the stock solution and dilute it to a total volume of 0.250 Litres,?
Find the Qsp if The solubility product of Ag 2 CO 3 =6.2 × 10-12. Also determine whether a precipitate forms in the solution (Assume 20 dropsper milliliter.)
Table salt (NaCl) and sugar (C12H22O11) are accidentally mixed A 5.00g sample is burned and 2.20-g of CO2 are produced. What is the mass percentage of the table salt in the mixture.
Find out the molar mass of each of the given gases 1) 2.16 grams of a gas that occupies 1.38L at 665 mmHg
An archeologist finds a huge monolith in the desert. In order to estimate the weight of this object; he estimates the dimensions of the monolith and removes some chips from the rock with his hammer.
What mass of natural gas (CH4) must burn to emit 470. kJ of heat? CH4(g) + 2 O2(g) CO2(g) + 2 H2O(g).
Determine how many significant figures are there in the Fahrenheit result when 7.02C converted to Fahrenheit scale,?
Does ammonium chloride added to water produce a simple solution, does the ammounium chloride dissociate or does a chemical reaction occur resulting in a new set of compounds.
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