0 0. A gram mole (Calcium is daitomic) is 80 grams. Problem 21 Which of the following has more atoms: 1.10 g of hydrogen atoms or $14.7 \mathrm{g}$ of chromium atoms? Determine the volume of … Definition: 1 gram atom of any element means mass of 1 mole of atoms of the element 1mol of Ca atoms has mass = 40.0g 1 gram atom of Ca has mass = 40.0g 5gram atoms of Ca has mass = 5 * 40.0 = 200.0g. Trending Questions. Explanation: The Periodic Table tells us that #6.022xx10^23# individual calcium atoms have a mass of #40.1*g# . Join Yahoo Answers and get 100 points today. an equal number of atoms. Trending Questions. Calcium's atomic mass is 40.08 g/mole, which rounds to 40 g/mole. Calcium has atomic mass 40. We know that 113 mg is 0.113. Find an answer to your question how many atoms are in 115 grams of calcium kieara4life kieara4life 09/12/2016 Mathematics High School How many atoms are in 115 grams of calcium See answer kieara4life is waiting for your help. (b) How many nearest neighbors does each Ca atom possess? 0.113 g / 40.08 g/mole = 0.00282 moles of calcium. If I have 1405 mg of Fe₂O₃, how many moles of iron do I have? Get your answers by asking now. (a) How many Ca atoms are contained in each unit cell? How many atoms are there in total in a molecule of Calcium carbonate, - 5091164 How many moles of calcium (Ca) atoms are in $77.4 \mathrm{g}$ of Ca? We also know that 1 mole = 6.022 x 10^23 atoms. Each 40.078 grams of calcium has a mole of atoms. Add your answer and earn points. Compared with a mole of neon, a mole of calcium contains. 1.204 x 10²³ atoms of Au. Homework Statement "Calcium crystallizes in a body-centered cubic structure. How many atoms of gold does he have? Still have questions? The atomic number of calcium is 20. There are five stable isotopes (40 Ca, 42 Ca, 43 Ca, 44 Ca and 46 Ca), plus one isotope (48 Ca) with such a long half-life that for all practical purposes it can be considered stable. (c) Estimate the length of the unit cell edge, a, from the atomic radius of calcium … has a mass of 80 grams (atomic mass) you can find how many atoms have a mass of 15 grams (I hope you know how to do it). How many moles of calcium atoms do you have if you have 7.92 × 10²¹ atoms of calcium. Ask Question + 100. Avogadro number . The compound calcium nitrate consists of a total of nine atoms, including one atom of calcium, two of nitrogen and six of oxygen. 1) Find your moles. (The mass of one mole of calcium is 40.08 g.) with the right amount of sig figs. 2) To find the atoms, multiply 0.00282 moles x 6.022x10^23 atoms/mole = 1.70 x 10 ^21 atoms of calcium. Calcium nitrate has the molecular formula Ca(NO3)2 and a molecular weight of 164.08 grams per mole. Calcium (20 Ca) has 26 known isotopes, ranging from 35 Ca to 60 Ca. 6.022 X 10²³. ... A prospector finds 39.39 g of pure gold. A calcium atom has 20 protons, 20 electrons and 20 neutrons. 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