Chemistry

A 0.08425 g sample of gas occupies 10.0-mL at 292.5 K and 1.10 atm. Upon further analysis, the compound is found to be 13.068% C and 86.932% Br. What is the molecular formula of the compound?
Identify the geometry around each carbon atom. a)trigonal pyramidal b)bent c)tetrahedral d)linear e)trigonal planar Is the compound polar or nonpolar?

  1. 👍
  2. 👎
  3. 👁
  1. Use PV = nRT to solve for n = number of mols. Then n = grams/molar mass. You know grams and n, solve for molar mass.

    Take 100 g sample which gives
    13.068 g C
    86.932 g Br.

    Convert grams to mols
    mols C = 13.068/atomic mass C.
    mols Br = 86.932/atomic mass Br.
    Find the ratio of C to Br with the smaller value being 1.00. The easy to do this is to divide the smaller value by itself; divide the other number by the same small number to find empirical formula which will be CxBry.
    empirical mass x z = molar mass(from above)
    Solve for x which becomes
    (empirical formula)x = molecular formula.

    Post your work if you get stuck.

    1. 👍
    2. 👎
  2. Br7C

    1. 👍
    2. 👎

Respond to this Question

First Name

Your Response

Similar Questions

  1. Chemistry

    A 0.65 mole quantity of O2 occupies 4.0 L at 20.◦C. What is the final pressure exerted by the gas? 1. 0.92 atm 2. 3.9 atm 3. 6.2 atm 4. 1.1 atm 5. 0.27 atm — Initially, I got .27 atm. I got this answer by plugging in the

  2. Chemistry

    A gaseous compound is 30.4% nitrogen and 69.6% oxygen by mass. A 5.25-g sample of the gas occupies a volume of 1.00 L and exerts a pressure of 1.26 atm at -4.00°C. Which of these choices is its molecular formula?

  3. Chemistry

    A sample of H2 gas (12.28 g) occupies 100.0 L at 400.0 K and 2.00 atm. How much volume will a 9.49 g sample of H2 occupy at 353 K and 2.00 atm? a. 68.2 L b. 54.7 L c. 147 L d. 109 L e.77.3 L Is it a. 68.2 L?

  4. Chemistry

    A rigid cylinder contains a sample of gas at STP. What is the pressure of this gas after the sample is heated to 410 K? a. 1.0 atm b. 0.50 atm c. 0.67 atm d. 1.5 atm Explain how you get the answer.

  1. Chemistry

    If a nitrogen gas sample occupies a volume of 2.55 L at 22.0 degrees Celsius and 0.860 atm, what is the mass of the N2 gas?

  2. physics

    1. The volume of a gas is 10.0 liters and its pressure is 1.5 atm. If the pressure is decreased to 0.75 atm, what is its new volume? 2. The pressure of a gas is 100.0 kPa and its volume is 500.0 ml. If the volume increases to

  3. Chem hw!

    1. What pressure would be needed to compress 25.1 mL of hydrogen at 1.01 atm to 25% of its original volume? 2. If the pressure on a 1.04-L sample of gas is doubled at constant temperature, what will be the new volume of the gas?

  4. Chemistry

    a sample of gas of unknown pressure occupies 0.766 L at the temperture of 298k the same sample of gas is than tested under known conditions and has the pressure of 32.6kPa and occupies 0.664 L at 303 k. What is the original

  1. Chemistry

    A sample of gas at 47 C and 1.03 atm occupies a volume of 2.20 L. What volume would this gas occupy at 107 C and 0.789 atm?

  2. Chem

    A sample of gas of mass 2.929 g occupies a volume of 426 mL at 0degree Cel and 1.00 atm pressure. What is the molecular weight of the gas? Thanks!

  3. sciencee

    1. What pressure would be needed to compress 25.1 mL of hydrogen at 1.01 atm to 25% of its original volume? 2. If the pressure on a 1.04-L sample of gas is doubled at constant temperature, what will be the new volume of the gas?

  4. Chemistry

    A sample of gas at 47°C and 1.03 atm occupies a volume of 2.20L. What volume would this gas occupy at 107°C and 0.789 atm? Does your answer make sense in terms of the gas law relationships?

You can view more similar questions or ask a new question.