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What is the empirical formula of a compound with the molecular formula C 12 H 8?
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∙ 10y ago
Empirical formula: C3H2
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∙ 10y ago
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Determine the molecular formula of a compound if its empirical formula is C2H6O and its molar mass is 138g?
Because an empirical formula is the simplest form of a compound, we know that the molecular formula contains more atoms than it does. Since we are given the molar mass, we can use this formula. x ( MM of empirical formula ) = MM of molecular formula MM of empirical formula = 12(2) + 1(6) + 16 = 46 MM of molecular formula = 138 46x = 138 x= 138 / 46 x=3 Therefore, the molecular formula is 3(C2H6O) that is C6H18O3
What is the molecular formula of a compound whose empirical formula is CH3 and whose molar mass is 30 g mol?
C2h6
The molecular formula mass of this compound is 210 amu What are the subscripts in the actual molecular formula Enter the subscripts for C H and O?
Element Element's atomic massC : 12H2 : 2(hydrogen's atomic mass is 1 but remember there are two)O : 16Add all the elements atomic mass and then divide the molecular mass by it. After that you only need to multiply all the subscripts of each element to find your answer.12+2+16=30240/30=88(CH2O) = C8H16O8
What is the molecular formula for cyclohexane?
The chemical formula for cyclohexane is C6H12 - It is not an equation, as by definition an equation would need two things that equate to each other (For example 2H2 + O2 --> 2H2O would be a chemical equation as each side is balanced). Cyclohexane is a hexagonal ring-shaped structure.
How do you determine a empirical formula?
The empirical formula is when you can not simplify the formula any further. Let's use the formula for glucose, C6 H12 O6 That is the molecular formula of glucose. The Empirical Formula of Glucose would be C1 H2 O1, because you can divide each element by 6. As for a compound such as ammonia N H3, that is it's Molecular Formula. It's empirical formula would be N H3 as well because it can not be simplified any further.
Determine the molecular formula of a compound if its empirical formula is C2H6O and its molar mass is 138g?
Because an empirical formula is the simplest form of a compound, we know that the molecular formula contains more atoms than it does. Since we are given the molar mass, we can use this formula. x ( MM of empirical formula ) = MM of molecular formula MM of empirical formula = 12(2) + 1(6) + 16 = 46 MM of molecular formula = 138 46x = 138 x= 138 / 46 x=3 Therefore, the molecular formula is 3(C2H6O) that is C6H18O3
What is the molecular formula of a compound whose empirical formula is CH3 and whose molar mass is 30 g mol?
C2h6
What is the molecular formula of a compound given the molar mass of the compound is 162.27 grams and the empirical formula is C2H3?
The empirical mass is C2H3 2 x 12 = 24 3 x 1 = 3 24 + 3 = 27 So divide 27 into 166.01 Hence 162.27 / 27 = 6.01 ~ 6 So multiply each atom in the empirical formula by '6' Hence Empirical C2H3 Molecular C12H18
What is the molecular formula of a substance that has an empirical formula of C2H5 and a molecular mass of 58 grams per mole?
If C2H5 was the molecular formula its molecular mass would be 29 ( 12 x 2 + 5 x 1) However, 29 x 2 = 58 the actual molecular mass. So we double up the atoms in C2H5 to C4H10 . C4H10 is the molecular formula.
A glucose molecule contains carbon hydrogen and oxygen in the ratio 6 to 12 to 6 What is the molecular formula for glucose?
Molecular formulas can not be determined from information about atomic ratios only. If the ratios stated are atomic ratios, then the empirical formula of the compound is CH2O. If the questioner meant, "A glucose molecule contains 6 carbon atoms, 12 hydrogen atoms, and 6 oxygen atoms ...", the molecular formula is C6H12O6.
What the compound 3C6H12O6?
From the formula C6H12O6, it is possible to tell that the compoundHas six carbon atoms, 12 hydrogen atoms, and 6 oxygen atoms in every one of its moleculesHas a molar mass of 6(12.00g) + 12(1.01g) + 6 (16.00g) = 180.12 grams per mol.Has an empirical formula of CH2O (which is not to be confused with the molecular formula, for CH2O is the molecular as well as the empirical formula of formaldehyde, but it is clear from the larger quantities of carbon, hydrogen and oxygen atoms that C6H12O6 is not formaldehyde)Is probably a monosaccharide (simple sugar).What is not clear from this molecular formula is how the six carbon atoms, twelve hydrogen atoms, and six oxygen atoms are arranged. Different arrangements made from this same molecular formula result in different substances; for example, glucose and fructose share this molecular formula but are different sugars that are metabolized differently in the body.
What is the molecular formula of the compound CH2 with molar mass 168 gmo?
You think probable to cyclodecane - (CH2)12.
The molecular formula mass of this compound is 210 amu What are the subscripts in the actual molecular formula Enter the subscripts for C H and O?
Element Element's atomic massC : 12H2 : 2(hydrogen's atomic mass is 1 but remember there are two)O : 16Add all the elements atomic mass and then divide the molecular mass by it. After that you only need to multiply all the subscripts of each element to find your answer.12+2+16=30240/30=88(CH2O) = C8H16O8
What is molecular mass?
the relative molecular mass or molecular weight of a compound is the mass of a molecule of the compound relative to the mass of a carbon atom taken as exactly 12.
How do you determine the atomic weight percent of an element in a compound?
To determine the weight percent of the elements in a compound, you only need to two things: the formula of the compound and a periodic table. With that, just follow these three steps.1) Determine the molecular weight (or molar mass) of the compound. For instructions on how to do that, see the Related Questions links to the left.2) For each element in the compound, multiply the atomic weight of that element by the number of times it occurs in the compound. Do this for each element you want to know the weight percent for. See the example below for more about how to do this.3) For each element, take the answer you got in Step 2, and divide it by the number you got in Step 1, and then multiply by 100%. In other words, take the weight of each element in the compound, and divide by the total weight, and then multiply by 100 to make it a percent (instead of a fraction).--EXAMPLE: What is the percent by mass of carbon and hydrogen in C9H20?--ANSWER: First, according to Step 1, we must find the molecular weight of the compound. To do that we multiply the atomic weight of each element by the number of times it occurs in the compound:(9 * 12.011) + (20 * 1.008) = 128.259 grams per mole.Now, let's look at carbon (C). According to the formula, there are 9 carbons in the molecule. Multiplying them as in Step 2, we have:9 * 12.011 = 108.099Finally in Step 3, we take this and divide it by the total weight:108.099 ÷ 128.259 = 0.84281Then multiply by 100%:0.84281 * 100% = 84.281% carbon by mass in C9H20.Now we can do the same thing again, but for hydrogen (H):20 * 1.008 = 20.1620.16 ÷ 128.259 = 0.157180.15718 * 100% = 15.718% hydrogen by mass in C9H20.Finally, we can do a quick double check. Since the compound only has carbon and hydrogen in it, the two percents that we found better add up to 100%!84.281 + 15.718 = 99.999 .... which is just slightly off due to rounding errors, but that's close enough!
If a compound has an empirical formula of CH and a mass of 26 grams what is the molecular formula?
First, add together the atomic masses of the elements:C- 12.0H- 1.00_______13.0Now put it into the following formula:x(added atomic mass) = molecular weight13.0x = 26.0Then find xx= 2Take the x value and multiply it with the number of atoms in the empirical formula/C1H1 * 2 = C2H2The final answer is the actual molecular formula C2H2 or Acetylene
What is the molecular formula for cyclohexane?
The chemical formula for cyclohexane is C6H12 - It is not an equation, as by definition an equation would need two things that equate to each other (For example 2H2 + O2 --> 2H2O would be a chemical equation as each side is balanced). Cyclohexane is a hexagonal ring-shaped structure.
