In the laboratory a student combines 49.7 mL of
a 0.133 M magnesium iodide
solution with 28.0 mL of a 0.562
M nickel(II) iodide solution.
What is the final concentration of iodide anion
?
___ M
In: Chemistry
Write in brief about the side effects of using (Benzoic Acid) as
preservative.....?
Which additive does convert (Sodium Benzoate) to (Benzene) in human
body?
Explain briefly, Why (Benzoic Acid) cannot be dissolved in water?
In: Chemistry
Calculate the enthalpy change for the reaction below given the standard heat of combustion for ammonia, NH3, is -226 kJ/mol. 4NH3 (g) + 5O2(g) --> 4NO(g) + 6H2O(g)
In: Chemistry
Predict the bond order in the following: Ca2
In: Chemistry
In: Chemistry
In need of a numbered, styrofoam cup calorimetry laboratory procedure. This experiment will utilize redox chemical process.
Basic materials include:
Styrofoam cups
Digital thermometers
Cardboard
3M HCL, H2SO4, C2H4O2, NAOH, NH4Cl
Mg, Al, Zn, Fe, Cu
In: Chemistry
RESONANCE STRUCTURES how do you know which elements has positve charge or negative
In: Chemistry
A .435 g sample of a nonvolatile, nonionizable solute with a molar mass of 67.4 g/mol is dissolved in 15.1 g of cyclohexane. Calculate the molar concentration of solute in the solution.
Calculate the boiling point of the solution described.
Calculate the freezing point of the solution described.
In: Chemistry
There is a large difference between Ionization potentials of Oxygen and Nitrogen, whereas the Ionization potentials of Phosphorous and Sulfur are very Close - Explain.
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Identify the charge on the transition metal center and the number of valence d electrons it has.
1. [Cu(en)2(H2O)2]I2
2. [Co(NH3)5(NO2)]Cl2
3. [Co(en)2Cl2]Cl-
4. Mo(bipy)(pph3)(CO)3
In: Chemistry
In: Chemistry
How many grams of an acid, HA (FW 90.04, Ka=5.60x10-2) should be mixed with 5.00 g of its conjugate base, A- (FW 176.22) to give a pH of 1.10 when diluted to 200 mL?
In: Chemistry
In: Chemistry
A sample of a compound containing boron (B) and hydrogen (H) contains 1.152 g of B and 0.3222 g of H. The molar mass of the compound is about 30 g. What is its molecular formula?
In: Chemistry
Which of the following elements is a brittle solid and poor conductor of heat and electricity?
A. Na
B.Mn
C. S
D.Pt
In: Chemistry