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