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Find the molecular mass of

I have to find the molecular formula for As2O3, to do so I have to divide its molecular mass by its empirical mass. I have
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2. asked by Mac
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A molecular compound is composed of 58.8% Xe, 7.2% O, and 34.0% F, by mass. If the molecular weight is 223 g/mol, what is the
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2. asked by chemistry
3. 1,278 views
What is the de Broglie wavelength in nm of a buckyball, (molecular formula C60), moving at speed 250 m/s?I don't understand how
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2. asked by Liana
3. 1,467 views
7.25 g of iron were reacted with sulfur until the product reached a constant mass of 13.50 g. If the experimental molecular mass
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2. asked by joan
3. 590 views
7.25 g of iron were reacted with sulfur until the product reached a constant mass of 13.50 g. If the experimental molecular mass
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2. asked by joan
3. 509 views
An is an Alkane with a relative molecular mass of 72 find the molecular formular of x and the molar mass of an alkane that is
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2. asked by Odunayo
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A chemist was asked to find the molecular mass of a gas. She massed the gas and found that 3.73 g of the gas occupied 300 cm3 at
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2. asked by B
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Find the molecular formula of a compound that is 48.38% carbon, 8.12% hydrogen, and 53.5% oxygen by mass and has a molecular
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2. asked by Jo
3. 2,196 views
In a certain reaction 0.20g of hydrogen gas combines with 3.20g of oxygen gas.if the relative molecular mass of the compound is
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2. asked by feyonce
3. 1,767 views
An unidentified compound contains29.84 g sodium, 67.49 g chromium, and 72.67 g oxygen. Find the empirical and molecular formula
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2. 42 views