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What is the empirical formula of aspirin if it contains 6g of carbon,0.44g of hydrogen and 3.56g of oxygen?

If 80g of glucose is fermented to form 4g ethanol,calculate the precentage yield of ethanol

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geoffw147
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SOURCE: if 80g of glucose is fermented to form 4g of ethanol,calculate the percentage yield of ethanol.

That is 4 / 80 * 100 = 5%
.

Posted on Dec 28, 2016

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A (n)_________tells what elements make up a compound and the ratios of the atoms of those elements.


It's called a Formula or Formula of a compound.
H2O, NaCl, H2SO4, I believe that's what you're asking about.
H2O is 2 parts Hydrogen to 1 part Oxygen. (Water)
NaCl is 1 part Sodium to 1 part Chlorine (Salt)
H2SO4 is 2 parts hydrogen, 1 part Sulfur, 4 parts Oxygen (Sulfuric acid)

Oct 03, 2016 | The Computers & Internet

1 Answer

What is the empirical formula of a compound that contains 50.0% carbon, 6.7% hydrogen, and 43.3% oxygen by mass?


CH2O
n(C) = 40.0 g / 12.01 g/mol = 3.33 mol

n(H) = 6.7 g / 1.01 g/mol = 6.63 mol

n(O) = 53.3 g / 16.00 g/mol = 3.33 mol

C: 3.33 / 3.33 = 1

H: 6.63 / 3.33 = 2

O: 3.33 / 3.33 = 1

Mar 24, 2015 | chemistry.com Computers & Internet

1 Answer

Orange trees


All plants make their own sugars or starches or oils out of hydro-carbons that they manufacture from carbon-dioxide from the air, and from the destruction of water molecules where it takes the hydrogen and gives off oxygen in the process. Therefore more sunlight and more water will produce more sugars.

Oct 18, 2013 | Computers & Internet

1 Answer

How many atoms of hyrdrogen gas in tow moles how


Hydrogen gas is a diatomic substance: Each molecule contains two hydrogen atoms.
A mole of hydrogen gas contains 6.02*10^23 hydrogen molecules, but since each molecule contains 2 hydrogen atom you have 2*6.02*10^23=?
The formula for nitric acid is HNO_3. It contains 5 atoms regardless of the elements
Now, 0.25 moles contain 0.25* 6.02*10^23 molecules oh nitric acid, ans since each molecule contains 5 atoms then 0.25 moles contain 0.25*5*6.02*10^23=? atoms
0.25*1*6.02*10^23 of hydrogen atoms, and the same number of nitrogen atoms and 0.25*3*6.02*10^23 oxygen atoms.

Oct 01, 2013 | Cars & Trucks

1 Answer

How many grams of aluminum acetate contain 2.24 x 1022 atoms of hydrogen?


1 Look up the formula for the aluminum acetate.
2 Count the number of Hydrogen atoms per molecule: Call that nH.
3 Dividing 2.24*10^22 by nH you get the number of molecules of acetate.
4. Divide that number by Avogadro's Number to obtain the number of moles required.
5. Multiply the number of moles by the molecular mass of the aluminum acetate (look it up or use the periodic table to calculate it), you will get the mass of aluminum acetate that contains 2.24*10^22 hydrogen atoms.

Sep 14, 2011 | Texas Instruments TI-84 Plus Calculator

1 Answer

Significant applications of anaerobic respiration in winemaking?


Vinegar is s the natural result of air exposure of beer and wine, as acetic acid-producing bacteria are present throughout the world.For most of human history, acetic acid, in the form of vinegar, has been made by acetic acid bacteria of the genus Acetobacter. Given sufficient oxygen, these bacteria can produce vinegar from a variety of alcoholic foodstuffs. Commonly used feeds include apple cider, wine, and fermented grain, malt, rice, or potato mashes.Vinegar is s the natural result of air exposure of beer and wine, as acetic acid-producing bacteria are present throughout the world.For most of human history, acetic acid, in the form of vinegar, has been made by acetic acid bacteria of the genus Acetobacter. Given sufficient oxygen, these bacteria can produce vinegar from a variety of alcoholic foodstuffs. Commonly used feeds include apple cider, wine, and fermented grain, malt, rice, or potato mashes.

Aug 24, 2011 | Computers & Internet

1 Answer

What is the full chemical equation for photosynthesis?


The full chemical equation for photosynthesis is:

Glucose + Oxygen = Carbon Dioxide + Water + Energy
C6H12O6 + 6O2 = 6CO2 + 6H2O +Energy

Oct 26, 2010 | Computers & Internet

1 Answer

Wiring


2002 PCED OBDII-Villager SECTION 1: Description and Operation Catalyst and Exhaust System Overview The catalytic converter and exhaust system work together to control the release of harmful engine exhaust emissions into the atmosphere. The engine exhaust gas consists mainly of nitrogen, carbon dioxide and water vapor. However, it also contains carbon monoxide, oxides of nitrogen, hydrogen, and various unburned hydrocarbons. Carbon monoxide, oxides of nitrogen, and hydrocarbons are major air pollutants, and emission into the atmosphere must be controlled.
The exhaust system consists of an exhaust manifold combined with a pre-catalytic converter, upstream heated oxygen sensor (HO2S11), (located just in front of the pre-catalytic converter), three way catalytic converter (TWC), downstream heated oxygen sensor (HO2S12) (located in front of the TWC), a muffler and an exhaust tailpipe.
Heated Oxygen Sensors The Villager is equipped with both upstream and downstream heated oxygen sensors (HO2S) (Figure 1). The upstream heated oxygen sensor (HO2S11) is used to control engine fuel flow. The sensor detects the concentration of oxygen in the exhaust gas and sends a signal to the powertrain control module (PCM). In a rich condition, the HO2S will output a voltage of 0.6 volts or greater, and in a lean condition a voltage of 0.4 volts or less will be output.
The downstream heated oxygen sensor (HO2S12) is used primarily for monitoring the efficiency of the catalytic converter system. The HO2S12 works in a similar way to the HO2S11 but only indicates to the PCM that the catalyst is functioning properly. In the event that the HO2S11 fails, fuel control will be switched over to the HO2S12 and the malfunction indicator lamp (MIL) will be illuminated. This allows the vehicle to operate with fewer emissions, even with a sensor failure.
Figure 1: Typical Heated Oxygen Sensor (HO2S)

Feb 21, 2009 | 2002 Mercury Villager

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