Compute the molality of the unknown compound

Assignment Help Chemistry
Reference no: EM13152819

Calculate the molality of the unknown compound (m). m=mol of solute X particles per formation / mass of solvent , kg Data given: Mass of test tube , flask, t-butyl alcohol and unknown : 146 .42g Mass of test tube and flask: 139.53g Mass of t-butyl alcohol , test tube , and flask : 146:24g Mass of t-butyl alcohol : 6.71 g Mass of unknown : 0.18g Freezing Point of solution from cooling point: 29.3 C Freezing point depression caused by addition of the unknown to t-butyl alcohol.: -5.00C

Reference no: EM13152819

Questions Cloud

What is the relationship between good x and y : What is the relationship between good X and Y.  With the aid of a well-labeled diagram, show what happens to equilibrium price and quantity of good X, if the price of good Y increases.
Transactions of carson company : Described below are certain transactions of Carson Company for 2007: On May 10, the company purchased goods from Jay Company for $50,000, terms 2/10, n/30. Purchases and accounts payable are recorded at net amounts. The invoice was paid on May 18.
What is the new gas pressure : A 12.0g- sample of a gas has a volume of 5.25g at 28 celcius and 757mmHg If 2.7g of the same gas is added to this constant 5.25L- volume and the temperature raised to 64 celsius, what is the new gas pressure?
What length would a dna sequence need : a. Assume the human genome is a random sequence with equal frequencies of A, G, C, and T. If you were to choose a particular, randomly selected 6 bp piece to examine, what is the probability that one piece would have the sequence GTAGAC?
Compute the molality of the unknown compound : Calculate the molality of the unknown compound (m). m=mol of solute X particles per formation / mass of solvent , kg Data given: Mass of test tube , flask, t-butyl alcohol and unknown
Ordinary regression line for proportional to the x value : Ordinary regression line where the spread is assumed to be constant in all parts of the line. In practice, plot yi vs. xi from the sample and see what type of relation exists. When can a ratio estimator be used?
What volume of carbon dioxide (co2) will be produced : What volume of carbon dioxide (CO2) will be produced if 2.90 moles of iron (Fe) is produced?
What proportion of human genome actually codes for protein : a. The current estimate for the number of protein coding genes in human genome is about 20,000. If the average protein is about 550 amino acids long, and it requires 3 base pairs to encode each amino acid, how many base pairs would be required to ..
Components of entity system of internal control : An auditor is required to obtain a sufficient understanding of each of the components of an entity's system of internal control to plan the audit of the entity's financial statements and to assess control risk for the assertions embodied in the ac..

Reviews

Write a Review

Chemistry Questions & Answers

  Determine the ph

Determine the pH of 263 ml of solution which has [NH4I] = 0.300 M. Kb = 1.74 × 10-5 for NH3(aq)

  Calculate the heat involved in the reaction

1.500 g of Mg(s) was combined with 125.0 mL of 1.0 M HCl. The initial temperature was 25.0oC and the final temperature was 72.3oC.

  Calculate the amount of heat [kcal] released

Calculate the amount of heat [kcal] released when 50.0 g of steam at 100 °C hits the skin, condenses, and cools to a body temperature of 37 °C.

  What is the mole fraction of ammonia

An aqueous solution is 30.0 % by mass ammonia, NH3, and has a density of 0.892 g/mL.The mole fraction of ammonia in the solution is?

  What are the percent abundances of each isotope

Silver has two naturally-occurring isotopes with masses of 106.905092 amu and 108.904756 amu. What are the percent abundances of each isotope, respectively?

  Determine the equation of reaction

If 7.85 x 10 to the 24th power Sc atoms react with excess CaO, how many grams of each product will form? You will need to determine the equation of the reaction.

  Explain the protons that give rise to the signal

The protons that give rise to the signal at 7 ppm are more shielded than the protons that give rise to the signal at 9 ppm. B) The protons that give rise to the signal at 7 ppm are less shielded than the protons that give rise to the signal at 9 p..

  Write the rate laws and determine the units of k

Write the rate laws and determine the units of k (the rate constant) for the following reactions: (a) The reaction A + 2B --> C is found to be second order in A and B, and third order overall

  Calculate the mass of cu(no3)2·3h2o needed

Calculate the mass of Cu(NO3)2·3H2O needed to prepare 50.0mL of a 0.50 M Cu(II) solution?

  How many grams of oxygen are needed

when ethane (C2H6) is burned, how many grams of oxygen are needed to react with 477 grams of ethane?

  Evaluate the partial pressure of the he gas

Mixture also contains He (helium gas). determine the partial pressure of the He gas?

  Explain treatment of compound with ozone

A colorless liquid A (C3H6O) was soluble in water and ether, and had a boiling point of 94-96 degrees C. it decolorized a Br2-CH2Cl2 solution and gave a positive ceric nitrate test, Treatment of Compound A with ozone, followed by hydrolysis in the ..

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd