Consider the reaction A+2B⇌C whose rate at 25 ∘C was measured using three different sets of initial concentrations as listed in the following table: Trial [A] (M) [B] (M) Rate (M/s) 1 0.30 0.030 3.2×10−3 2 0.30 0.060 6.5×10−3 3 0.60 0.030 1.3×10−2 What is the rate law for this reaction? PART B aswell ?

20.00 mL of 0.11 M HNO3 is titrated with 0.25 M NaOH.  What volume of base is required to reach the equivalence point?
Calculate pH at each of the following points in the titration.

a) 4.40 mL
 b) 8.80 mL
 c) 12.00 mL

Calculate the molar solubility at 25C of BaSO4 in seawater in which the concentration of sulfate ion is 2.8g/L. Ksp=BaSO4=9.1X10-11

These elementary steps are proposed for a mechanism:

1) 2NO(g) → N2O2(g)

2) 2H2(g) → 4H(g)

3) N2O2(g) + H(g) → N2O(g) + HO(g)

4) 2HO(g) + 2H(g) → 2H2O(g)

5) H(g) + N2O(g) → HO(g) + N2(g)

a) Write the rate law for the first step.

b) Determine the molecularity of the third step.

c) Write the balanced equation for the overall reaction.

The following reaction can occur at 298K under appropriate conditions.
2SO2(g) +O2(g)-----> 2SO3(g)
An equilibrium mixture contain O2(g) and SO3(g) at partial pressure of 0.50atm and 2.0atm respectively. Using data available in Appendix 4 of your textbook, determine the equilibrium partial pressure of SO2 in the mixture. Will this reaction be most favored at a high or at a low temperature, assuming standard conditions? Justify your reasoning
Substance.             delta H°              S°
SO2(g)                     -297.                    248
SO3(g)                     -396.                     257
O2(g)                         0.                         205

At 700

12. What is the molarity of 0.31 mol of NaCl in enough water to make 2.0 L of solution?

13. What is the molarity of the nitrate ions when 0.60 mol of barium nitrate, Ba(NO₃)₂, is dissolved in enough water to make 2.0 L of solution?

14. Calculate the molarity of calcium hydroxide that has been prepared by dissolving 2.24 g of calcium hydroxide in water and diluting the solution to a final volume of 4.00 L.

15. Calculate the molarity of the hydroxide ions in a solution that has been prepared by dissolving 70.3 g of barium hydroxide (Ba(OH)₂) in water and diluting the solution to a final volume of 4.00 L. (M.W's: Ba 137.3 g/mol., O 16.0 g/mol, and H 1.0 g/mol)

16. How many moles of H⁺ are in 181 mL of 0.71 M nitric acid, HNO₃?

23. Nitrobenzene (NB) is made by nitrating benzene (B) with a mixed acid (39% HNO₃, 53% H₂SO₄, 8% H₂O). The reaction is:

C₆H₆ + HNO₃ ? C₆H₅NO₂ + H₂O

Conversion of B to NB is 97% complete

1000 lb_m of B and 2070 lb_m of acid used

How much xs HNO₃was used?

How much NB is formed?

Glycogen is reducing or non-reducing ? If can explain the reason too ? It is a Biochemistry related question.

Outline the steps to calculate the initial pH in the titration of a strong acid with a strong base?

Outline the steps to calculate the pH before the equivalence point of the titration of a strong acid with a strong base?

Outline the steps to calculate the pH after the equivalence point of the titration of a strong acid with a strong base?

What is the pH halfway to the equivalence point of the titration of a weak base with a strong acid?

1) You are given a solid hydrate. You dry and weigh a sample tube. You put in the hydrate and reweigh.
You heat the tube and contents to drive off any water then cool and reweigh.
You obtain the following fictional data:

Mass of sample tube and hydrate	37.9143 g
Mass of sample tube and hydrate after heating and cooling	36.8824 g
Mass of empty sample tube	35.6254 g
Molecular weight of the anhydrous salt	112.0 g/mol

Calculate:

Mass of hydrate weighed out	_______________ g	(a)
Mass of water lost after heating	_______________ g	(b)
Per cent water in the hydrate	_______________ %	(c)
Moles of water lost during heating	_______________ mol	(d)
Moles of anhydrous salt remaining after heating	_______________ mol	(e)
Ratio-moles of water per mole of anhydrous salt	_______________	(f)

Report this ratio (f) as a single number to two decimal places, e.g. the ratio of 2.00 mole water and 1.50 mol salt is 1.33

Calculate the amount of ATP in kg that is turned over by a resting human every 24 hours. Assume that a typical human contains ~50g of ATP (Mr 505) and consumes ~8000 kJ of energy in food each day. The energy stored in the terminal anhydride bond of ATP under standard conditions is 30.6 kJmol-1. Assume also that the dietary energy is channeled through ATP with an energy transfer efficiency of ~50%.

Consider a gas phase reaction, 2A+B −↽−⇀− 3C+2D. When 1.00 mol A and 2.00 mol B, and 1.00 mol D were mixed and allowed to come to equilibrium at 25◦ C and ptotal = 1.0 bar, the resulting mixture contained 0.90 mol C. Calculate (a)partial pressures of each at equilibrium, (b) Keq, and (c) ∆rG.

two solutions can be found on either side of a semi-permeable membrane. a 4.0m sucrose solution is found on the left side and a 2.0m Nacl solution is found on the right side. which direction will the solvent flow?

Also what would happen if it was 2.0m nacl on left and 4.0m sucrose on right ? what if it was 2.0nacl and 2.0m sucrose ?

please explain thanks