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What is the percent composition of a compound that contains 17.6 g of iron and 10.3 g of sulfur has a total mass of 27.9 g compound?
The percent by mass of iron in the stated compound is 100(17.6/27.9) or 63.1 %, to the justified number of significant digits. Since the compound contains only two elements, the percent by mass of sulfur is 100 - 63.1 or 36.9 %. To find the atomic percentages rather than the mass percentages, the mass for each element must be divided by the gram atomic mass of that element. 17.6 grams constitutes 17.6/55.457 or about 0.313 gram atoms of iron, and 10.3 grams of sulfur constitutes 10.3/32.06 or about 0.321 gram atoms of sulfur. The atomic ratios of the two elements in simple binary compounds such as iron sulfide must have ratios of small whole numbers. The specified compound contains about equal numbers of iron and sulfur and therefore has the formula FeS.
If 230 g sample of a compound contains 136.6 g of carbon 26.4 g of hydrogen and 31.8 g of nitrogen The rest is oxygen What is the mass percent of oxygen in the compound?
To find the mass percent of oxygen in the compound, first calculate the total mass of the compound by adding the masses of carbon, hydrogen, and nitrogen. The total mass of the compound is 136.6 g (C) + 26.4 g (H) + 31.8 g (N) = 194.8 g. The mass of oxygen can be calculated by subtracting the total mass of the compound from the given mass of the sample: 230 g - 194.8 g = 35.2 g. Therefore, the mass percent of oxygen in the compound is (35.2 g / 230 g) x 100% ≈ 15.3%.
What is the percent composition of ammonium carbonate?
Ammonium carbonate has the formula (NH4)2CO3. To calculate the percent composition, you first find the molar mass of each element and then divide the molar mass of each element in the formula by the formula mass of the compound and multiply by 100 to get the percentage.
What is the mass percent of hydrogen in ammonium phosphate NH4 3PO4?
To find the mass percent of hydrogen in ammonium phosphate NH4 3PO4, first calculate the total molar mass of the compound. Then, determine the molar mass contributed by hydrogen. Finally, divide the molar mass of hydrogen by the total molar mass of the compound and multiply by 100 to get the mass percent.
What is mass percent of H in H20?
The mass percent of hydrogen (H) in H2O (water) is 11.11%. This can be calculated by dividing the mass of hydrogen by the total mass of the compound (2g H / 18g H2O * 100%).
How do you find the percent composition of a given element?
You don't. Elements are all just one substance. The element 'gold' is 100% gold; the element Americium is 100% Americium; The element Krypton is 100% Krypton, and so on through the table of the elements.
What is the percent 59.7 lithium mass of 100 g of the compound?
The percent mass of lithium in a compound with 100 g is calculated by dividing the mass of lithium by the total mass and multiplying by 100. So, if the compound contains 59.7 g of lithium, the percent mass of lithium would be (59.7 g / 100 g) * 100 = 59.7%.
What is the mass percent of oxygen in the compound?
To determine the mass percent of oxygen in a compound, you would calculate the mass of oxygen in the compound and then divide it by the total mass of the compound, before multiplying by 100. The formula is: (mass of oxygen in compound / total mass of compound) x 100%.
What must the sum of all the percent be?
The sum of all percent must be 100
What is the formula for the percent by mass of a compound?
((mass of element)/(mass of compound))*100
How is the percent composition by mass determined?
The percent composition by mass of a compound is determined by dividing the mass of each element in the compound by the total mass of the compound, then multiplying by 100 to get the percentage. This calculation gives the proportion of each element in the compound by mass.
How to find the percent by mass of a compound in a given sample?
To find the percent by mass of a compound in a given sample, you need to divide the mass of the compound by the total mass of the sample and then multiply by 100. This will give you the percentage of the compound in the sample.
What is the percent nitrogen in NH4NO3?
The percent nitrogen in NH4NO3 is 35.04%. This can be calculated by dividing the molar mass of nitrogen in the compound by the molar mass of the entire compound and then multiplying by 100.
What is the definition of percent composition?
Percent composition is the percentage by mass of each element in a compound. It is calculated by dividing the mass of each element in the compound by the total molar mass of the compound and then multiplying by 100 to get the percentage.
How do you calculate the percent by mass of an element in a compound?
To calculate the percent by mass of an element in a compound, you divide the mass of the element by the total mass of the compound and then multiply by 100. This gives you the percentage of the compound's mass that is made up of that specific element.
What percent of 100 is 10?
10 percent of 100 is 10. Basically to find the number that is a percentage of another number, you just need to multiply them together. However, just remember that you must convert the percentage to a decimal and to convert, you must divide the percentage by 100.
How do you find the percent of oxygen by mass in a compound?
To find the percent of oxygen by mass in a compound, you need to know the molar mass of the compound and the molar mass of oxygen. Divide the molar mass of oxygen by the molar mass of the compound and multiply by 100 to get the percentage.
