the formula mass may be correctly referred to as a molecular mass. Consider chloroform (CHCl3), a covalent compound once used as a surgical anesthetic and now primarily used in the production of the “anti-stick” polymer, Teflon. The molecular ...
The mole is used in chemistry to represent 6.022×10236.022×1023 of something, but it can be difficult to conceptualize such a large number. Watch this video to learn more. The relationships between formula mass, the mole, and Avogadro’s number can be applied to compute various quantities ...
Sometimes in chemistry, researchers do not know the chemical formula for a molecule they are investigating. In this case, they may only be able to determine the molecule's mass and what elements are in the molecule. Even if they can only discover some of the elements, using percent ...
Sarawutnam/iStock/GettyImages In chemistry, mass ratio, often called "percent composition by mass," is the proportion of a particular molecule that consists of each that molecule's constituent elements. For example, water consists of 11.1 percent hydrogen (H) and 88.9 percent oxygen (O), meani...
A calculator to determine the molecular mass, mass percent, and element info for any molecule. An excellent tool for any chemistry student or professional, at any level. No longer will you have to constantly check the periodic table for molecular masses. Simply type in the chemical formula into...
Calculate the weight percent of K2CO3K2CO3 and KHCO3KHCO3 in the mixture. I started this problem by finding the amount of moles of HClHCl added to the titration, assuming that the solution was completely neutralized at the endpoint. In 0.03129 L0.03129 L of a solution of 0.742 M HCl...
A calculator to determine the molecular mass, mass percent, and element info for any molecule. An excellent tool for any chemistry student or professional, at any level. No longer will you have to constantly check the periodic table for molecular masses. Simply type in the chemical formula into...
The atomic mass of hydrogen is1.00794and oxygen is15.9994. The formula to calculate the molecular weight based on the atomic weights looks like this: molar mass = 1.00794 (H) + 1.00794 (H) + 15.9994 (O) Therefore, the molar mass of H2O is18.01528 g/mol. ...
See how to determine the empirical formula from percent composition. Related to this QuestionWhat is the empirical formula of a compound that is 64.8% C, 13.6% H, and 21.6% O by mass? What is the empirical formula of a compound that is 48.6% C, 8.2% H, and ...
Chlorine-37 has an atomic mass of 36.966 amu and a percent abundance of 24.23%. To calculate the average atomic mass of chlorine, use the information in a periodic table of the element (see Resources) to find the (weighted) average but changing the percents to decimals: ...