Explain the epirical formula then for the molecular formula

Assignment Help Chemistry
Reference no: EM13499746

A compund with a formula mass of 42.08 amu is found to be 85.64% carbon and 14.36% hydrogen by mass. find its molecular formula. I did this problem and got c2h for the epirical formula then for the molecular formula i got c4h2 but im not sure thats right.

Reference no: EM13499746

Questions Cloud

Write statement of stockholders equity : The information from these statements is used to analyze and establish budgets, forecast, variance reports, and ratios, among other things, with the key being that they are only used internally).
Define the naming laws to name elements : Explain the naming laws to name elements. and also how to derive the chemical formula from the names given.
Find the kinetic energy relative to the center of mass : A 8.5 kg block moves at 9 m/s to the right while a 8.5 kg block moves at 10 m/s to the right. Find the kinetic energy relative to the center of mass
How to calculate ph of the reaction : When 33.5 mL of 0.580 M H2SO4 is added to 33.5 mL of 1.16 M KOH in a coffee-cup calorimeter at 23.50°C, the temperature rises to 30.17°C. Calculate ?H of this reaction.
Explain the epirical formula then for the molecular formula : A compund with a formula mass of 42.08 amu is found to be 85.64% carbon and 14.36% hydrogen by mass. find its molecular formula. I did this problem and got c2h for the epirical formula then for the molecular formula i got c4h2 but im not sure that..
Conduct a sargan test for instrument validity : Enter the value of the test statistic in the box and enter the critical value corresponding to a 1% significance level in the box below (rounded to 3 decimal places).
Find out the electron affinity of hydrogen : Determine the electron affinity of hydrogen; that is, Delta H for the process H(g) + e- = H-(g). To do so, the bond energy of H2(g)
Estimate the angular acceleration of the pulley : A 2.70 bucket is attached to a disk-shaped pulley of radius 0.121 and mass 0.842 . If the bucket is allowed to fall. What is the angular acceleration of the pulley
Enter the t-statistic that you calculated : Enter the t-statistic that you calculated 'manually for the test in the box and Enter the x2 statistic that Gretl generates for this test in the box

Reviews

Write a Review

Chemistry Questions & Answers

  How many grams of dry nh4cl need to be added to 160 l of a

how many grams of dry nh4cl need to be added to 1.60 l of a 0.800 it m solution of ammonia nh3 to prepare a buffer

  Compute the total internal energy change in kilojoules

A gaseous reaction occurs at a constant pressure of 50.0 atm and releases 67.9kJ of heat. Before the reaction, the volume of the system was 8.80L . After the reaction, the volume of the system was 2.80L .Calculate the total internal energy change ..

  Compute the percent relative error for the three solutions

Calculate the percent relative error for the three solutions if perfect technique is used. Report the two new molarities. (The error in a 10-mL transfer pipet is 0.02, and the error in the 200-mL volumetric flask is 0.1)

  Explain balanced chemical reaction for the compounds

What compounds will be present after chemical reaction has occurred. Write out a balanced chemical reaction for this description, and name all compounds present.

  Determine how much pv work is done

Hydrochloric acid HCl are permitted to react at atmospheric pressure and the volume change is -71.1 liters then determine how much PV work is done?

  Calculate e when 7700 g of ch3ohg completely reacts at a

consider the following reaction.ch3ohg cog 2 h2g h 90.7 kjcalculate e when 770.0 g of ch3ohg completely reacts at a

  Explain what value of ksp can be derived

If pure PbI2 is allowed to dissolve in water and produces 5.0 x 10^-3 M I- what value of ksp can be derived

  Calculate the moles and the mass of solute

Calculate the moles and the mass of solute in 250.0 mL of 6.00 M NaOH.

  State the total molarity of acid and conjugate base

A beaker with 165 mL of an acetic acid buffer with a pH of 5.000 is sitting on a bench. The total molarity of acid and conjugate base in this buffer is 0.100 M. A student adds 7.00 mL of a 0.390 M HCl solution to the beaker. How much will the pH c..

  Impurities tend to lower the melting-point temperature

Does purified aspirin appear to be purer than crude aspirin? What is your evidence?

  What is the actual amount of magnesium oxide produced when

what is the actual amount of magnesium oxide produced when excess carbon dioxide reacts with 42.8grams of magnesium

  State the molar mass and the molecular formula of the solid

Calculate the molar mass and the molecular formula of the solid. (Ki for diphenl is 8.00'C/m)

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