•■■ 0 STATES OF MATTER Calculating mass percent composition V A chemist mixes 80. g of diethyl ether with 17. g of thiophene and 38. g of acetic acid. Calculate the percent by mass of each component of this solution. Round each of your answers to 2 significant digits. component mass percent diethyl ether thiophene […]
Molarity, mass concentration, and mass percent composition Q STATES OF MATTER Calculating mass concentration 0/5 (Madeline NI) RM. V A chemist prepares a solution of calcium sulfate (CaSO4) by weighing out 0.3466 g of calcium sulfate into a 250. mL volumetric flask and filling the flask to the mark with water. Calculate the concentration in […]
0 CHEMICAL REACTIONS Calculating molarity using solute moles 0/S (Madeline V) V A chemist prepares a solution of silver(I) perchlorate (AgC104) by measuring out 5.0 x 102 gmol of silver(I) perchlorate into a 300. mL volumetric flask and filling the flask to the mark with water. Calculate the concentration in mmol/L of the chemist’s silver(I) […]
As a scientist, it is important to be able to independently study topics that are of interest to you. Electrochemistry has many applications and societal impacts. For this quiz, identify a topic of interest to you. Read a paper from the references provided. Your primary paper must be one of the references suggested or obtain […]
Questions: Q1) EpCam (Epithelial cell adhesion molecule) has been associated with several cancers including breast cancer. In the paper by Soysal et al (2013) entitled ‘EpCAM expression varies significantly and is differentially associated with prognosis in the luminal B HER2+, basal-like, and HER2 intrinsic subtypes of breast cancer’ the authors investigated levels of EpCam using […]
Answer all of the questions below. Part marks will be given where appropriate. Your final answer should have the correct number of significant figures unless noted otherwise. Copper sulphate pentahydrate CuSO4.5H2O is a blue solution that can be analyzed using AA Spectroscopy. A set of standards is run and the best fit line for the […]
Name _________________________Station # ______ Date _____________________ CHM 101 Spectrophotometry PRE-LAB Calculate the molarities of diluted Copper (II) Sulfate solutions from the stock solution, which is 0.1 M CuSO4. Flask # Volume of CuSO4 Solution (mL) Volume of DI H2O (mL) Molarity (M) of Solution Cuvette #1 0 5 Blank (0.0 M) Flask # 2 1 […]
Organic Chemistry I Lab Report for Lab #8 Catalytic Dehydration of 4-methyl-2-pentanol using acid. You are to write up a lab report using the observations during my lab that are attached to do #6 Conclusions/Discussions. You do not need to do #7 or #8.
Using robust details and ample evidence, create a reflection paragraph that describes 4 learning objectives you met while performing this experiment. View the learning objectives from the lab manual provided and select four to focus your writing on. Make this a well-constructed paragraph by including an introduction and conclusion sentences, avoiding bulleted lists. Challenge yourself […]
Respond with 250 words On average there are 62 different types of metal that go into the production of modern smartphones. Most of these metals are mined from third world countries and some with very limited supplies. What are your thoughts on our reliance on these metals, their source, and consequences to both the environment […]
