1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
EleoNora [17]
3 years ago
14

Upon combustion, a 1.3109 g sample of a compound containing only carbon, hydrogen, and oxygen produces 3.2007 g

/tex.z-dn.net/?f=CO_%7B2%7D" id="TexFormula1" title="CO_{2}" alt="CO_{2}" align="absmiddle" class="latex-formula"> and 1.3102 gH_{2}O. Find the empirical formula of the compound.
The answer I got was CH_{16}O, but I'm not sure if I did it right or not. Can someone confirm this for me?
Chemistry
2 answers:
Ivenika [448]3 years ago
8 0

Answer:

The answer to your question is:   C₃H₃O  This is my answer.

Explanation:

Data

Sample = 1.3109 g

CxHyOz

CO₂ = 3.2007 g

H₂O = 1.3102 g

Empirical formula = ?

MW CO2 = 44 g

MW H2O = 18 g

For Carbon

                                     44 g -------------------- 12 g

                                     3.2007 g ------------    x

                                      x = (3.2007 x 12) / 44

                                      x = 0.8729 g of Carbon

                                     12 g of C --------------  1 mol

                                     0.8729 g --------------  x

                                     x = (0.8729 x 1) / 12

                                     x = 0.0727 mol of Carbon

For Hydrogen

                                 18 g ---------------------- 1 g

                              1.3102 g -------------------  x

                                   x = (1.3102 x 1) / 18

                                  x = 0.0727 g of Hydrogen                                      

                                  1 g ------------------------ 1 mol

                                  0.0727g ----------------  x

                                  x = (0.0727 x 1)/1

                                  x = 0.0727 mol of Hydrogen

For oxygen

                    g of Oxygen = g of sample - g of Carbon - g of hydrogen

                    g of Oxygen = 1.3109 - 0.8709 - 0.0727

                    g of Oxygen = 0.3673

                                  16 g of Oxygen ------------- 1 mol of O

                                  0.3673 g ---------------------   x

                                   x = (0.3673 x 1)/ 16

                                   x = 0.0230 mol of Oxygen

Divide by the lowest number of moles

Carbon              0.0727 / 0.023  = 3.1  ≈ 3

Hydrogen         0.0727 / 0.023 = 3.1  ≈ 3

Oxygen             0.0230 / 0.023 = 1

                                        C₃H₃O

Eddi Din [679]3 years ago
6 0

Answer:

The empirical formula of the compound is C_4H_8O_1

Explanation:

Moles of carbon dioxide = \frac{3.2007 g}{44 g/mol}=0.07274 mol

Moles of carbon in sample = 1\times 0.07274 mol=0.07274 mol

Moles of water = \frac{1.3101 g}{18 g/mol}=0.07279 mol

Moles of hydrogen in sample = 2\times 0.07279 mol=0.14558 mol

Mass of sample = Mass of carbon + Mass of hydrogen + Mass of oxygen

Mass of oxygen =

1.3109 g - (12 g/mol × 0.07274 mol) - (1 g/mol× 0.14558 mol)

Mass of oxygen = 0.29244 g

Moles of oxygen in sample = \frac{0.29244 g}{16 g/mol}=0.01828 mol

For empirical formula divide the moles of element which are is less amount with all the moles of every element.

Carbon =\frac{0.07274 mol}{0.01828 mol}=3.9\approx 4

Hydrogen =\frac{0.14558 mol}{0.01828 mol}=7.9\approx 8

oxygen=\frac{0.01828 mol}{0.01828 mol}=1

The empirical formula of the compound is C_4H_8O_1

You might be interested in
En un recipiente cerrado y rígido se introdujo una mezcla gaseosa a cierta temperatura y las presiones parciales de cada gas son
valkas [14]

Answer:

Qp > Kp, por lo tanto, la presión parcial de BrF₃(g) aumenta hasta alcanzar el equilibrio.

Explanation:

Paso 1: Escribir la ecuación balanceada

BrF₃ (g) ⇌ BrF(g) + F₂(g)      Kp(T) = 64,0

Paso 2: Calcular el cociente de reacción (Qp)

Qp = pBrF × pF₂ / pBrF₃

Qp = 1,50 × 2,00 / 0,0150 = 200

Paso 3: Sacar una conclusión

Dado que Qp > Kp, la reacción se desplazará hacia la izquierda para alcanzar el equilibrio, es decir, la presión parcial de BrF₃(g) aumenta hasta alcanzar el equilibrio.

7 0
3 years ago
what type of science allows us to alter the DNA of a corn plant so that it will contain more protein?
fiasKO [112]

Answer:

biotechnology

Explanation:

hope this helps have a good day

4 0
2 years ago
Read 2 more answers
Besides being slow to reproduce, what else could make a population susceptible to being endangered?
olga_2 [115]

Answer:

Not being able to adapt to their surroundings

Explanation:

For example, a population living in a cold climate and wears little to no clothes will give them frost bite. And so the nature of needing to adapt is core to survival.

6 0
3 years ago
Read 2 more answers
I Need help asap i will give brainliest
Flauer [41]

Answer:

It maintains a constant internal temperature.

Explanation:

Our body tries its hardest to maintain a constant internal temperature. This is because if we get to warm or cold it is unhealthy. If your body senses that it is getting to warm or cold it will try to correct itself.

3 0
3 years ago
The recommended daily allowance (RDA) of the trace metal magnesium is 410 mg/daymg/day for males. Express this quantity in μg/da
Ira Lisetskai [31]

Answer:

410mg/day *\frac{1000 ug}{1 mg}

Recommended daily Amount (RDA) of magnesium is  410,000 μg/day.

Explanation:

There are 1000μg in 1 mg and 1000 mg in 1g

1 mg=1000μg

The Recommended daily Amount (RDA) is 410 mg/day of magnesium. Converting 410 mg/day into μg/day

410mg/day *\frac{1000 ug}{1 mg}

It will become 410,000 μg/day

So Recommended daily Amount (RDA) of magnesium is  410,000 μg/day.

4 0
3 years ago
Other questions:
  • Which represents potential energy? A)bread baking B)lawnmower cutting grass C)car racing downhill D)weed whacker full of gas
    9·2 answers
  • The diagram shows changes of state between solid, liquid, and gas. The atoms of a substance gain energy during a change of state
    15·2 answers
  • Las nubes el agua y el Hielo<br> son lo mismo?
    7·1 answer
  • Which scientist was able to quantify the electron's charge and estimate its specific mass? A. J. J. Thomson B. Robert Millikan C
    5·2 answers
  • There is an error in the rate-determining step of the following proposed mechanism.
    14·1 answer
  • What mass of oxalic acid dihydrate, H2C2O4•2H2O, is needed to make a 0.357 M solution of oxalic acid in a 250.0mL volumetric fla
    10·1 answer
  • A sample of CO2 gas has a volume of 2.7 L at 78.5 kPa. At what pressure would this sample of gas have a volume of 4.0L? Temperat
    12·1 answer
  • A solution is made by dissolving 4.8 moles of salt in 1.6L of solution. What is the molarity
    15·1 answer
  • An exploratory robot was sent to the planet mars. The gravity on mars is weaker than the gravity on earth. Compared to the mass
    6·1 answer
  • Isotopes are:
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!