Chemistry

Chemistry, 22.06.2019 12:00, daytonalive83481

Ican determine the molar mass of an element by looking on the under the atomic mass for the element. for example the molar mass of phosphorus is 30.974 grams/mole. avogadro’s number tells me the amount of representative particles in 1 mole of any substance. this means 12.011 gram sample of carbon and a 32.0 gram sample of sulfur have the same number of atoms.

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Chemistry, 20.07.2019 05:50, kathleendthomas

Given the atomic mass of select elements, calculate the molar mass of each salt. element molar mass (g/mol) beryllium (be) 9.012 magnesium (mg) 24.31 cobalt (co) 58.93 cadmium (cd) 112.41 bromine (br) 79.90 match the numbers to the appropriate blanks in the sentences below. make certain each sentence is complete before submitting your answer. hints 88.91 gmol 104.21 gmol 168.81 gmol 138.83 gmol 184.11 gmol 218.73 gmol 192.31 gmol 272.21 gmol 1. the molar mass of cobr2 is . 2. the molar mass of bebr2 is . 3. the molar mass of mgbr2 is . 4. the molar mass of cdbr2 is .

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Chemistry, 02.08.2019 22:30, salvadorperez26

The second step is to calculate the mass of a given element ammonium nitrate (nh4no3). we will calculate the masses of all three elements. the molar mass of each element is given below: molar mass of n: 14.0 g/mol molar mass of h: 1.0 g/mol molar mass of o: 16.0 g/mol identify the number of moles of each element present in one mole of nh4no3. # moles n: 2 # moles h: 4 # moles o: 3 calculate the mass of each element in the compound by multiplying its molar mass by the number of moles of the element present in one mole of the compound. mass n = g mass h = g mass o = g

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Chemistry, 02.08.2019 22:30, averystricker7837

The second step is to calculate the mass of a given element ammonium nitrate (nh4no3). we will calculate the masses of all three elements. the molar mass of each element is given below: molar mass of n: 14.0 g/mol molar mass of h: 1.0 g/mol molar mass of o: 16.0 g/mol identify the number of moles of each element present in one mole of nh4no3. # moles n: # moles h: # moles o:

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Chemistry, 23.09.2019 14:30, dragongacha777

When an element, e, is burned in air, the compound e4o10 is formed. assume that one experiment showed that 0.744 g of e produces 1.704 g of e4o10. use this information to determine the ratio of atomic masses of e and e4o10, and then use the atomic mass of oxygen to determine the atomic mass of e and identify the element for which e stands. (remember: atomic mass and molar mass are numerically equivalent.) (hint: there isn’t enough space below to perform all of the required calculations. you should brainstorm and consider how mass, molar mass, and the ratio of elements that can be determined from the chemical formula are related to each other. try to "see" the connections between these concepts.)

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