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A Naturally occurring element A exists in three forms of its isotopes: A-28 (27.977 amu, 92.23% abundance), A-29 (28.976 amu, 4.67% abundance), and A-30 (29.974 amu, 3.10% abundance). Compute the atomic weight for this naturally occurring element A?
Find what is the initial concentration of the chlorine before dilution - unknown concentrated chlorine
Calculate how many grams of Ni2+ are present in 3.36 moles of nickel(II) fluoride(NiF2) and also determine the number of moles of F- ion are present in 4.82 grams of nickel(II) fluoride.
Fundamentals of chemistry - The conditions under which gases behave most ideally and Under the Bronsted?Lowry definition a base
Water supply in a city is fluoridated by adding NaF. The preferred concentration of F- is 1.6ppm.calculate the amount of Naf in milligrams should be added per gallon (treated water) if the water supply is 0.2 ppm in F-?
Calculate how many grams of phosphorus are present in 2.68 moles of phosphorus pentachloride(PCl5) and also determine the numbers of moles of chlorine are present in 3.71 grams of phosphorus pentachloride?
Compute how many titanium atoms are there in 24.1 grams of titanium and also determine what is the mass in grams of 3.23E+23 atoms of titanium.
Given chemical reaction is used to produce electricity in lead storage battery that used in automobiles generally.
Compute the heat amount required to heat a 3.9kg gold bar from 28 degree Celsius to 68 degree Celsius. Given Specific heat capacity of gold = 0.128 J/g°C.
Solving this question helps the student to understand how to find molecular formula using moles and mass and What is the molecular formula of this compound?
Which graduated cylinder would have the greatest volume change if equal masses of Au and Pt are transferred to equal volumes of H2O in separate graduated cylinders? Density of gold = 19.31 g/cm3 , density of platinum =21.43 g/cm3
Compute the number of moles - As we know many volatile substances are present in Earth's atmosphere in trace amounts.
Determine the molar mass of aspartame and How many moles of molecules are in 10.0g of aspartame?
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