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A compound with a formula mass of 42.08 amu is found to be 85.64% carbon and 14.36 % hydrogen by mass. find its molecular
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2. asked by Nick C
3. 2,581 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. 1,497 views
balance this equation. prove that it obeys the law of conservation of mass by using formula masses.HNO3 + Mg(OH)2 ---> HOH +
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2. asked by mike
3. 788 views
Find the empirical Formula of a compound that is 30.4% nitrogen by mass, and consists of only nitrogen and oxygen. What is its
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2. asked by Ernesto
3. 1,092 views
1)The chemical formula for aspirin is C9H8O4. What is the mass of 0.40 mol of aspirin? How would I find this?2)The gram
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2. asked by anonymous
3. 14,820 views
So I did a lab determining the chemical formula of a hydrate. We had to find the molecular formula of a hydrate of copper (2)
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2. asked by Katherine
3. 2,094 views
a 5.0 kg mass hangs at the end of a cord. Find the tension in the cord if the acceleration of the mass is 1.5 m/s squared up.
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2. asked by courtland
3. 1,220 views
A compound of B and H is found to have a mass percent composition of 81.1% Boron. Its empirical formula is B2H5. A mass
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2. asked by Nikela
3. 1,057 views
A gas has an empirical formula of POF3. If 0.350L of the gas at STP has a mass of 1.62g, what is the molecular formula of the
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2. asked by Sh
3. 839 views
How would you find the empirical formula for this... a substance was found by analysis to contain 20% by mass calcium and 80% by
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2. asked by Jamie Marie
3. 500 views