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How many particles in 1 gram?
In 1 gram of any substance, the number of particles can vary depending on the substance's molecular weight and Avogadro's number. To calculate the number of particles, you would first need to determine the molar mass of the substance in grams per mole. Then, you would use Avogadro's number, which is approximately 6.022 x 10^23 particles per mole, to find the number of particles in 1 gram of the substance.
How many moles are 1.25 and times 10 25 atoms of phosphorous?
Oh honey, let me break it down for you. Avogadro's number tells us that 1 mole is equal to 6.022 x 10^23 atoms. So, to find out how many moles are in 1.25 x 10^25 atoms of phosphorus, you just need to divide the number of atoms by Avogadro's number. That gives you approximately 20.75 moles of phosphorus.
What do you do when you have a mixed number in percentage base and rate?
What you need to do depends on what you wish to achieve.
How many mols are in 0.000264 g li2 hpo4?
To determine the number of moles in 0.000264 g of Li2HPO4, you first need to calculate the molar mass of Li2HPO4. The molar mass of Li2HPO4 is 115.79 g/mol. Next, you can use the formula n = m/M, where n is the number of moles, m is the mass in grams, and M is the molar mass. Plugging in the values, you get n = 0.000264 g / 115.79 g/mol ≈ 2.28 x 10^-6 moles of Li2HPO4.
When to use avogadros number?
When converting the mols measurement into atomic weight (or vice-versa). Since there are 6.02x10^26 atoms in a mol. There are some keywords you can look for to determine whether or not you need to use Avogadro's number. Look for the keywords ions, molecules, moles (IF grams [g] to moles), and formula units in the question. If the question is asking for any of these terms or involves any of those terms, Avogadro's number will be necessary to use.
