W73

What about if I wanted to put an aluminum grate in a bbq to hold the charcoal? I don't know what temperature it begins to off gas.

levorotatory isomer. What is the specific rotation of the sample?

How do I use the percentages to figure out the specific rotation? I don't get it.

My lab teacher is 2 chapters ahead of my lecture class. Does anyone know the equation for calculating this or how to calculate this?

in a two dimensional cartesian system, the x-component of a given vector is equal to that vector's magnitude multiplied by which trigonometric function, wth respect to the angle A between vector and the positive y-axis.

Please explain why?

The Ksp of Ca(IO3)2 is 7.1x10^-7 at 298 K. Calculate the solubility (g/L) of calcium iodate in

(a) 0.060 mol/L Ca(NO3)2

(b) 0.060 mol/L NaIO3

I have a final tomorrow and I still don't get this one.

is the same concentration of methanoic (formic) acid (pKa=3.74). for each of these solutions calculate:

(a) [H3O+] and pH

(b) [OH-] and pOH

This question confuses me in the way it is written.

Consider the following reaction: CO(g)+H2O(g)=CO2(g)+H2(g) for which Kc=102 at 500K. If a reaction mixture originally contains 0.125 mol/L of CO and 0.125 mol/L of H2O (a) what is Q at the start? (b) calculate the equilibrium concentration of all species present. Thanks, I really appreciate the help.

x=1+(y-2)^2. I want to graph it, but I need it to be y=....

Please help me. The fact that I have a y^2 and y is confusing me. Is it even possible?

Iron(III) ion reacts with hypochlorite ion in basic solution to form ferrate ion (FeO4^2-), Cl^-, and water.

Any help would be appreciated.

kind of a tar or caulking that was smeared in the seam. I had to grind it out, and now I want to replace it. Does anyone know what it is? It's not caulking. It's more like a hard tar or something. It's stock on camaros and chevelles and probably many other cars.

I need to know what the percentage of each is and their sum should equal 100%. I have .0486 of one thing and .0475 of another. One should be slightly above 50% and the other should be slightly below 50%. I feel like I should be able to figure this out easily, but I can't. I really need help.

altitude 3 ft. If the water level is rising at a rate of 0.5 inches per minute when the depth is 2 ft, how fast is water entering the trough?

So far, I have:

a/h=2/3

a=2h/3

A=1/2(base1+base2)h

V=15A

V=15/2[60+(60+2a)]h=900h+5h^2

V'=900+10h

Here I'm getting confused. Did I do everything right up to this point, and how do I finish?

I think I want:

dV/dt=dV/dh*dh/dt

and runs to first base at 25 ft/sec.

a.) At what rate is the distance between the ball and first base changing when the ball is halfway to third base?

b.) At what rate is the distance between the ball and the player changing when the ball is halfway to third base?

For (a.) I got 45.72 ft/sec., but I'm stumped on (b.). Could someone show me how to solve?

My teacher says it's cose^xe^x, and I don't understand why. I just want to confirm the answer is correct. He makes a lot of mistakes.

I have a 5mL solution of HCl. The density of HCl is 1.05 g/mL. The density of water is 0.998 g/mL. And I added 2mL of water to the solution. I really need help. Could someone please help me figure this out. Thanks.

determination 1, [HBPB^2-] = 7.22x10^-6 mol/L, [OH^-] = 1.00 mol/L, time = 75 s

determination 2, [HBPB^2-] = 7.22x10^-6 mol/L, [OH^-] = 0.25 mol/L, time = 290 s

determination 3, [HBPB^2-] = 3.63x10^-6 mol/L, [OH^-] = 1.00 mol/L, time =152 s

Assume that the small, constant amount of HBPB^2- consumed in the experiment described above corresponds to an HBPB^2- concentration change of 7.22x10^-7 mol/L.

Could someone please help me figure this out. I know it's a first order reaction, but I'm having trouble figuring out what to put in my equation k = rate/[HBPB^2-][OH6-]. Please show the work so I can see how it's done. Thanks to anyone who helps me.

A 0.996 g sample of an unknown was dissolved in 10.1 g of benzene. If the freezing point depression of the solution was -4.19 °C, find the molar mass (g·mol-1) of the unknown. Any guidance would be appreciated.