Recent content by jessica.so

Okay. Is the heat of solution a value that I need to calculate that has a formula? Or should I be able to find a list that lists all of them?

Homework Statement What is the heat of solution of calcium chloride (CaCl2) and sodium bicarbonate (NaHCO3)? Homework Equations The Attempt at a Solution Heat of solution is more formally known as the enthalpy of fusion. I tried googling this but I am not sure if this is the...

No, I have not titrated 100mL

:eek: So sorry! Yes, I did mean the coefficient. So...I'm using the first attempt... 2CaVa = CbVb 2(Ca)(0.02500 L) = (0.0800 M)(0.04000L) Ca = 0.0640 M #moles of H2A = CaVa = (0.0640 M)(0.10000 L) = 0.00640 mol molecular mass of H2A = mass/# moles = 1.5000 g / 0.00640 mol =...

I've always been taught that the exponent in CaVa = CbVb equations is the number of moles of H[SUP]+[SUP] ions or OH[SUP]-[SUP] ions which is why I put the 2 infront of the CaVa. Another time I attempted this question but I balanced the neutralization first. H2A + 2 NaOH --> 2 H2O + Na2A...

Homework Statement 1.5000 g of diprotic weak acid H2A was dissolved in 100.00 mL volumetric flask. 25.00 mL aliqouts of this solution was titrated with a monoprotic strong base NaOH (0.08000 M). The titre volume of NaOH was 40.00 mL. Calculate the molecular weight of H2A. Homework...

If you were given a sample unknown solid acid that had a mass of 0.7 g and it was being dissolved in 50 mL of water and was being titrated with NaOH, is it possible to find the molar mass or the formula of the acid? Given information Mass of solid acid: 0.7 g Volume of acid solution: 50 mL...

If you have different molarities of an acid, would it affect the rate law and have different constants for each molarity?

What is the chemical formula of Kerosene?

Q: When water and chloroform, CHCl3, are mixed, the two components separate into two distinct layers, each of which smells strongly of chloroform. Account for these observations in terms fo the polarity of the two substances involved. Describe how you could very quickly determine which of the...

Q1: Why are titrations using permanganate performed in acid solution? Q2: A bottle containing a standard solution of potassium permanganateis found to have brown stains on the inside. Why will this potassium permanganate be of no further use for quantitative experiments? KNOWN: Potassium...

Does anyone know how to do a regression analysis on excel? I need to find the correlation coefficient and the coefficient of determination and I only know how to do that with a graphing calculator TI 83+

Homework Statement When you are given the type of function, the roots and the zeros, how do you find the equation? Information given was: a cubic function with zeros -2 (order 2) and 3 and y-intercept 9 Homework Equations N/A The Attempt at a Solution since zeros are -2 and 3, x+2...

The ball is pulling on the pole through the rope? Okay. I think I got it. Thank you!

Homework Statement How does Newton's Third Law of Motion apply to a tetherball? Homework Equations N/A The Attempt at a Solution Forces always occur in pairs (action/reaction force). I know that when you're pushing on a wall, the wall pushes back on you, which is why you don't...