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∙ 7y agoThe gram molecular mass of HF is 20.01. Therefore, 0.589 mole has a mass of 11.79 grams and is sufficient to form 0.589 mole of sodium fluoride* when sodium is present in excess. The gram molecular mass of sodium fluoride is 41.99, so that 0.589 grams of it has a mass of 24.7 grams, to the justified number of significant digits.
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The formula unit of both hydrogen and sodium fluorides contains a single fluorine atom.
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∙ 11y agoThe balanced equation for the reaction between HF and Na2SiO3 is unknown. Therefore, it is not possible to determine the exact amount of moles of HF needed to react with 0.220 mol of Na2SiO3 without additional information.
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∙ 11y ago(0.500molHf x 1molNa2SiOx41.988gNaF)/(8moleHF)= 2.62gNaF x 2= 5.25gNaF
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∙ 8y ago6 moles of HF react with 1 mole of SiO2.
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∙ 11y ago2.40 mol HF
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∙ 7y ago1,6 moles of HF are needed.
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∙ 7y ago0.44 moles HF required.
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∙ 11y ago0,61 g
Dental procedure code 0220 refers to a dental x-ray (periapical), specifically, it is the first image exposed. All subsequent x-rays are coded differently.
Dental procedure code 0220 refers to a dental x-ray (periapical), specifically, it is the first image exposed. All subsequent x-rays are coded differently.
1 acre = 43,560 square feet
The ISBN of The Silver Spike is 0-8125-0220-5.
The address of the Georgetown Branch is: 4570 Highway 500, Georgetown, 71432 0220
The address of the Bridgeport Community Library is: 1206 Columbia St, Bridgeport, 98813 0220
The address of the Kearny Public Library is: 912-A Tilbury Road, Kearny, 85137 0220
The phone number of the Sunnyvale Historical Museum is: 408-749-0220.
The phone number of the Freeman Road Branch is: 847-934-0220.
The address of the Morrill Memorial Library is: 33 Walpole St., Norwood, 02062 0220
The address of the Richland Township Library is: 8821 Third Street, Vestaburg, 48891 0220
The address is 2125 E South Blvd, Montgomery, AL and their phone number is 334- 532-0220