K2SO4(aq) + AgNO3(aq) → Ag2SO4(s) + KNO3 (aq)

a Balance the reaction.

b. Given that you have a 1.75 L solution of 0.170 M K2SO4 and a 2.00 L solution of 0.110 M AgNO3, calculate the amount in grams of precipitate formed. Show work

c.Calculate the concentration of SO2− ions left after the reaction has been completed

precipitate formed. show work

What are the differences between alkenes and alkynes? What are the differences between cis- and trans-isomers? How are cistrans isomers used for night vision?

Some enzymes are inhibited by high concentratins of their own substrates. (a) show that when substrate inhibition is important the reaction rate v is given by

v= Vmax/ ( 1+km/[S}o + [S]o/K1

Where Ka is the equilibrium constant for dissociation of the inhibited enzyme substrate complex. (b) What effect does the substrate inhibition have on a plot of 1/v against 1/[S]o?

Hydrogen bonding in water accounts for ?

In a reduction experiment, 45.00 g of acetone, C3H6O, MWt = 58.08, is reduced with sodium borohydride, NaBH4, MWt = 37.83, to form 2-propanol, C3H8O, MWt = 60.10.

Write the balanced equation showing the overall stoichiometry of the reaction. The fate of the borohydride is not necessary, just the mole ratio to the acetone.

How many grams of NaBH4 are required to reduce 45.00 g of acetone?

. If 40.00 gm of product are recovered, what is the percent yield for this reaction?

If acetone is reduced with NaBH4, and workup is completed by adding DCl, (deuterated hydrochloric acid), what is the structure of the resulting product?

1-propanol, C3H8O can be oxidized by NaOCl(aq), to propionic acid, C3H6O2 and NaCl(aq). Balance these half cells using the half cell method. You do NOT need to balance the entire redox reaction. (10 pt) C3H8O ---> C3H6O2 OCl-(aq) ---> Cl-(aq)

Ammonia reacts with oxygen according to the equation: 4 NH₃ (g) + 5 O₂ (g) + 6 H₂O (g). Delta H rxn= -906 kJ

Calculate the heat (in kJ) associated with the complete reaction of 143 g of NH₃

1.)What is the pressure (in millimeters of mercury) inside a container of a gas connected to an open-end manometer when the level in the arm connected to the container is 344.5 mm in height lower than the level in the arm open to the atmosphere? Atmospheric pressure is 765.1 mm Hg and the density of mercury is 13.546 g/mL.

2.)What is the pressure (in millimeters of mercury) inside a container of a gas connected to an open-end manometer filled with CHCl₂Br (density = 2.451 g/cm³) when the level in the arm connected to the container is 898.4 mm in height higher than the level in the arm open to the atmosphere? Atmospheric pressure is 755.1 mm Hg and the density of mercury is 13.546 g/mL.

3.)Two separate flasks are each filled with a gas at 25.0°C; the valve between them is opened and the gases are allowed to mix. What would be the final pressure in atmospheres after mixing, if initially C₂H₂ is in the first flask (Volume = 3.000 L) at 313.6 torr and Kr is in the second flask (Volume = 2.000 L) at 222.6 torr?

Aluminum crytallizes with a face-centered cubic cell.

a) What is the net number of Al atoms inside the unit cell?

b) If the edge length of the unit cell is 4.045x10^-10 m, what is the density of Al in grams per cm^3?

Why do you think the reaction between tetraphenylcyclopentadienone and dimethyl acetylenedicarboxylate can be conducted at relatively lower temperature compared to the reaction between tetraphenylcyclopentadienone and diphenylacetylene?    

1. Write two reactions to demonstrate the acid and base character of a bicarbonate ion (indicate the acid base pairs in both reactions).

2. Write one reaction to indicate the amphoteric nature of methanol, CH3OH (indicate the acid base pairs in both reactions).

When the cells of the skeletal vacuole of a frog were placed in a series of NaCl solutions of different concentrations at 298 K, it was found that the cells remained unchanged in a 0.70 % (by weight) NaCl solution. For a 0.70 % NaCl solution the freezing point is depressed by –0.406 K. The osmotic pressure was calculated to be 5.34 atm.

a. Suppose that sucrose (M=342 g/mol) was used instead of NaCl (M= 58.5 g/mol) to make the isoosmotic solution. Estimate the concentration (wt%) of sucrose that would be sufficient to balance the osmotic pressure of the cytoplasm of the cell. Assume that sucrose solutions behave ideally.

Hydrazine, N2H4, may react with oxygen to form nitrogen gas and water.

N2H4(aq)+O2(g)---------N2(g)+2H20(l)

If 3.05 g of N2H4 reacts and produces 0.850 L of N2, at 295 K and 1.00 atm, what is the percent yield of the reaction?

A buffer is prepared by adding 15.0 g of ammonium chloride (NH4Cl) to 5.00L of 0.200 M ammonia (kb=1.8x10^-5). 1. What is the pH of the buffer solution? (assume the addition of ammonia does not change the volume) 2. What is the pH of the buffer after 90.0 mL of 2.00M HCl are added to the original buffer?

A 10.0 mL solution of 0.064 M AgNO3 was titrated with 0.032 M NaBr in the cell. S.C.E. || titration solution | Ag(s) Find the cell voltage for 0.5, 14.0, 20.0, and 32.0 mL of titrant. (The Ksp of AgBr = 5.0 ✕ 10−13.)

Draw the two major allylic alcohol intermediates and the two final products in the following two-step synthesis. Show the correct stereochemistry of each compound; if applicable, use wedge/dash bonds to indicate chirality centers, and you must show hydrogens on these centers.