Recent content by Valenti

A=ECL A = log(io/I) A = log100/1 = 2 2/105M(1cm) = 0.019M ~ 20mM Apparently the answer is 2mM, where did I go wrong?

When doing the same calculation for the first endpoint (10.24 mL used) I get a molar mass of 98g/mol. Should it matter which endpoint I use for the calculation?

using M=m/n I get formula weight to be 24.29g/mol

Hey, I've been having some trouble with my Lab report. After doing a titration of an unknown diprotic acid we had to find the molar mass of the acid and then find out which acid it is by comparing it to a list of given acids with molar masses. But when I run through the calculations my answer...

Wording may be a bit off since I don't remember what it was exactly, but since these were the only variables given would it be safe to assume it was just a test error?

Hey guys had a midterm yesterday but I got stumped on a question with really no idea how to solve it, I'm not really looking for an answer more of a what steps to solve this sort of question. I don't remember exactly what the question was but it was along the lines of Na2CO3 nH2O (This isn't the...

Seems I may be missing something, i still can't tell when its a plane or line

Not sure honestly, I changed the question around for my own use, but in the original question it says to verify why it is coplanar, so id assume it to span across a plane

Like the title says I'm not sure when the result is coplanar or collinear Homework Statement Are the following vectors in triple product coplanar or collinear? u = i + 5j -2k v= 3i - J w= 5i + 9j - 4k Homework Equations Cross product - place into a 3x3 matrix grid The Attempt at a Solution...

Ah alright thanks I'll be sure to do that for upcoming questions. As for this question not counting my errors in significant digits was it wrong, or did i have the right procedure?

Homework Statement A red and a blue rubber puck are free to slide along a frictionless air table. Each has a mass of 40 grams. They collide in an elastic collision. Initially the red one is at rest and the blue one is traveling in the x direction with a speed of 4 m/s. After the collision the...

Thanks, checked my work again and noticed i forgot to sq root for Vf in the KE formula, since it was negative only the momentum equation works. What type of questions would the KE formula be used though?

Homework Statement A child stands on frictionless ice and throws a snowball. Estimate the recoil velocity of the child. Homework Equations m1v1i + m2v2i =m1v1 +m2v2f 1/2mv21i + 1/2 mv22i = 1/2 mv21f + 1/2mv22f The Attempt at a Solution After choosing estimates for weight of snowball, speed of...

Homework Statement A red ball and blue ball are sliding on a frictionless surface, each ball has a mass of 40g. They collide in an elastic collision. Initially the red one is at rest and the blue one is traveling in the x direction with a speed of 4 m/s. After the collision the blue one is...

Homework Statement Kids are pulled 2km around a town in a wagon,The handle of the wagon is on an angle of 30 degrees from horizontal and requires 200N to maintain constant velocity. Determine the amount of work done against non‐conservative forces on this walk. Δx = 2km = 2000m angle θ = 30...