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Does The element with the largest subscript in a formula have the largest percent by mass in the compound?

Sometimes, but not necessarily: The largest percent by mass in a compound is that of the element for which the product of the subscript and the atomic weight is highest. For example, there is more carbon than hydrogen by mass in CH4.


What has the largest formula mass LiCl NaCl KCl MgCl2.?

MgCl2 has the largest formula mass among the given compounds. This is because the formula mass of a compound is the sum of the atomic masses of all the atoms in a formula unit, and magnesium (Mg) has a greater atomic mass than lithium (Li), sodium (Na), and potassium (K).


How to find the mass of an element in a compound?

To find the mass of an element in a compound, you can use the formula: mass of element (mass of compound) x (percent composition of element in compound). This formula helps you calculate the mass of a specific element within a compound based on its percentage composition.


How does molecular mass and formula mass are related to the mass of a compound?

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What is the molar mass of the nonelectrolyte compound if a 4.305 g sample of it is dissolved in 105 g of water?

To find the molar mass of the nonelectrolyte compound, we need to use the formula: Molar mass (mass of compound / moles of compound) First, we need to find the moles of the compound by using the formula: moles mass / molar mass Given that the mass of the compound is 4.305 g and it is dissolved in 105 g of water, we can calculate the moles of the compound. Next, we can find the molar mass of the compound by rearranging the formula: Molar mass mass / moles By plugging in the values, we can calculate the molar mass of the nonelectrolyte compound.


What are the sum of atomic masses of all atoms formula for a compound called?

It is called the molar mass of that compound. In other words, the total mass of all of the elements in a compound is equal to one mole of that compound.


What is gram formula mass?

The mass of a mole of an ionic compound.


What is the formula for the percent by mass of a compound?

((mass of element)/(mass of compound))*100


Is the element with largest atomic mass always present in highest percentage by mass in a compound?

No, the element with the largest atomic mass is not always present in the highest percentage by mass in a compound. The percentage by mass of an element in a compound is determined by its atomic mass and the total mass of the compound. The composition of a compound can vary based on the number of atoms of each element present.


What information is needed to calculate the percent composition of a compound?

The formula of the compound and the Atomic Mass of its elements.


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 is the molecular formula of the compound ch2 with molar mass equals 168 gmol?

c12h24