To do this, you need to know the molecular weight of the element you're dealing with, by adding up the atomic weights of the elements involved (found on any Periodic Table). The molecular weight is the mass in grams of the compound in one mole - this will provide you with a conversion factor. So take the measurement in grams and divide it by the molecular weight to convert to moles. Really what you're doing is multiplying the number by 1 mole, and dividing it by the equivalent of one mole, the molecular weight. That's the thought process behind unit analysis and how you get your "units to cancel".
In this case, the answer is about .0611 moles water.
10 grams nitrogen (1 mole N/14.01 grams)(6.022 X 1023/1 mole N) = 4.3 X 1023 atoms of nitrogen ======================
Water
Inder to find this out, you divide the numbers of grams you have by the amount of grams it takes to make one mole of that element (6.022 x 10^23) and then multiply by Avigadros number (6.022 x 10^23). That should tell you how many atoms are in the amount of grams you have. See, Avigadros number is the amount of atoms in one mole of every element, so you can use that to figure out about how many atoms are in any given element.
A molecule of of water contain 3 atoms.
q = mC∆T214 cal = (10g)(1cal/g/deg)(∆T)∆T = 214 cal/(10g)(1cal/g/deg) = 21.4 degreesSo, the temperature of the water will increase by 21.4 degrees
There are one hundred 10g in 1kilo
10g of helium has fewer atoms. This is because the atomic mass of helium is much higher than that of hydrogen, so the same mass of helium contains fewer atoms than the same mass of hydrogen.
20 x 500 mg = 10g or 10g = 500mg x 20
10 grams nitrogen (1 mole N/14.01 grams)(6.022 X 1023/1 mole N) = 4.3 X 1023 atoms of nitrogen ======================
1.36 tablespoons of coffee has been present in 10g.
Water
It depends on how much water you have!
The percentage strength of the solution is 20%. This is calculated by dividing the mass of the salt (10g) by the total mass of the solution (10g salt + 50g water) and multiplying by 100.
A 10g weight would sink in water as it is heavier than the water it displaces. Objects float when they are less dense than the liquid they are placed in.
Inder to find this out, you divide the numbers of grams you have by the amount of grams it takes to make one mole of that element (6.022 x 10^23) and then multiply by Avigadros number (6.022 x 10^23). That should tell you how many atoms are in the amount of grams you have. See, Avigadros number is the amount of atoms in one mole of every element, so you can use that to figure out about how many atoms are in any given element.
A molecule of of water contain 3 atoms.
q = mC∆T214 cal = (10g)(1cal/g/deg)(∆T)∆T = 214 cal/(10g)(1cal/g/deg) = 21.4 degreesSo, the temperature of the water will increase by 21.4 degrees