If you have a given mass of a compound, you can calculate the number of moles. Conversely, if you know how many moles of the compound you have, you can calculate its mass. For either calculation, you need to know two things: the chemical formula of the compound and the mass numbers ...
The table to the right shows how these elements would be arranged on the periodic table. Notice that each element is represented by a symbol and that the symbol for aluminum is Al. The number above each symbol is the element's atomic weight, measured in atomic mass units (amu). Atomic ...
What is Avogadro's number and how do you use it to find the number of moles present in a sample? Measuring Atoms in Chemistry: Atoms are very, very small and are measured inamu, or atomic mass units. This number is very small, and so scientists came ...
What is an Atomic Mass Unit (AMU)? How do you show the number of protons and neutrons on a Bohr-Rutherford diagram? How does an atom try to fill its valence shell? How do you find the valency of an element? How can one find the valency of an element?
To find how much a certain number of atoms weigh in atomic mass units, multiply the atomic mass by the number of atoms. Note you will usually be doing this for very large numbers of atoms, and will need a calculator. Say you're given a problem to find the mass of 6.7 x 10^4 carb...
in finance, exponents are used to calculate compound interest. the formula a = p (1 + r/n)^(nt) calculates the final amount (a) when a principal amount (p) is invested at an annual interest rate (r) compounded n times per year for t years. how does floating-point representation in...
First of all, convert the masses to the number of moles of each compound, and use theperiodic tablefor the atomic masses of the elements. Besides, the atomic mass unit of carbon is 12.0 amu (rounding to one decimal place) and of chlorine, the amu is 35.5. So, one mole ...
other compound is a mole of that compound. One mole of any compound has a characteristic mass in grams, which happens to be exactly the same as its atomic mass in atomic mass units (amu). For example, the atomic mass of hydrogen is 1.008 amu, so a mole of hydrogen weighs 1.008 grams...
Ask a question Our experts can answer your tough homework and study questions. Ask a question Search AnswersLearn more about this topic: What is Mass? | Definition, Formula & Units from Chapter 28 / Lesson 42 123K What is mass? Learn the mass definition and how to fi...
Grams to Moles Conversion:Water, like any pure chemical compound, has a definite mass-mole correspondence or conversion. The correspondence or conversion factor is the molar mass of water. A mole of water constitutes 6.02×1023 molecules. This is true of a mole of...