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Moles of As in Na2HAsO4.7H2O?

To find the moles of As in Na2HAsO4.7H2O, you would first calculate the molar mass of Na2HAsO4.7H2O, then divide the molar mass of As by the molar mass of Na2HAsO4.7H2O to find the moles of As.


How do you find the molar mass of an atom?

To find the molar mass of an atom, you need to add up the atomic masses of all the atoms in its chemical formula. This can be determined from the periodic table. The unit for molar mass is grams per mole.


How do you find theoretical percent of water?

To find the theoretical percent of water in a compound, you need to determine the molar mass of the compound and the molar mass of water. Then, divide the molar mass of water by the molar mass of the compound and multiply by 100 to get the percentage.


How do you find the relative molar mass with the fraction abundance and isotope molar mass?

To find the relative molar mass of an element using its isotopes, you multiply the molar mass of each isotope by its fractional abundance (the proportion of that isotope relative to the total). Then, you sum these products for all isotopes. The formula can be expressed as: [ \text{Relative Molar Mass} = \sum (\text{Isotope Molar Mass} \times \text{Fractional Abundance}) ] This gives you the weighted average molar mass of the element based on its isotopic composition.


What is is the molar mass of 3.00 of NaCL and 1.50kg?

The molar mass of NaCl (sodium chloride) is 58.44 g/mol. To find the molar mass of 3.00 mol of NaCl, you would multiply 3.00 mol by the molar mass of NaCl. For the 1.50 kg, you would first convert the mass from kilograms to grams (1 kg = 1000 g), then divide the mass by the molar mass to find the number of moles.