chem

posted by .

a simple hwk question.. i don't understand what i need to do..

1-butanol (shown below) burns in the presence of oxygen to give off carbon dioxide and water by the following reaction:
C4H9OH + 6 O2 ==> 4 CO2 + 5 H2O
If 40.88 mL of 1-butanol burns completely, how many grams of 1-butanol have burned? grams
(Hint: The density of 1-butanol is 0.810 g/mL)

  • chem -

    You only have to solve for the mass; everything else is irrelevant to the answer. I hate it when teachers give you a bunch of extra information that you do not need to solve a straight forward problem.



    Density=mass/volume

    So, solve for mass

    density *volume=mass=(0.810g/mL)*(40.88mL)=33.1g of 1-butanol

    notice that the mL's cancel out and you are only left with grams (g).

  • chem -

    wait okay I figured it out till there... but then later I got this question and got stuck
    How many moles of 1-butanol does this number of grams represent?

  • chem -

    mols = grams/molar mass

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. chemistry

    From the following combustion: 1-butanol + oxygen = carbon dioxide + water. How many grams of carbon dioxide and water are produced when 130.6 grams of 1-butanol is completely burned?
  2. chem

    balance 1-butanol + oxygen=carbon dioxide+water how many grams of carbon dioxide and water are produced when 130.6 grams of 1-butanol is completly burned?
  3. chemistry

    1. Chlorobenzene, C6H5Cl, is used in the production of chemicals such as aspirin and dyes. One way that chlorobenzene is prepared is by reacting benzene, C6H6, with chlorine gas according to the following BALANCED equation. C6H6 (l) …
  4. chem hwk

    a simple hwk question.. i don't understand what i need to do.. 1-butanol (shown below) burns in the presence of oxygen to give off carbon dioxide and water by the following reaction: C4H9OH + 6 O2 ==> 4 CO2 + 5 H2O If 40.88 mL of …
  5. chemistry

    1-butanol (shown below) burns in the presence of oxygen to give off carbon dioxide and water by the following reaction: C4H9OH + 6 O2 ==> 4 CO2 + 5 H2O If 40.88 mL of 1-butanol burns completely, how many grams of 1-butanol have …
  6. Chemistry

    1. Hydrogen gas combines with oxygen gas to yield water. if 15 g O2 is present in the reaction, compute how much water will be produced. 2. Ten (10)grams methane gas combines with oxygen gas to form water and carbon dioxide. How much …
  7. Chemistry (My previous post lacked something)

    Question: At STP propane (C3H8) burns in oxygen to form 2.15L of carbon dioxide and water. The question is in 4 parts. I just need the first: a)What mass of oxygen is necessary for this reaction?
  8. chem

    The problem is :2.8 grams of ethene burns in oxygen to form carbon dioxide and water Calculate a)the number of moles in 2.8g of ethene b)the number of carbon dioxide(mole ratio) dioxide formed c)the mass of carbon dioxide formed D)the …
  9. Biology Asap!

    1. A hypothesis and a theory are related because A.a Theory is always used to develop a hypothesis B.They are both developed in the absence of observations. C. the data collected when a hypothesis is tested can support a theory. D. …
  10. Chemistry

    1.When 5 grams of wood burns completely and 15 grams of oxygen, 10 grams of water vapor and some carbon dioxide are given off. (How many grams of carbon dioxide would be produced in this example?

More Similar Questions