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What is the number of molecules in a sample of 75.0 grams ferric chromate (Fe 55.845 Cr 51.996 O 16)?
Wiki User
∙ 8y ago
The answer is: approx. 10e23 molecules.
Wiki User
∙ 8y ago
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Why are there always the same number of adenine and thymine in a molecule?
Chemical analysis has shown that the number of adenine molecules in a sample of DNA is always the same as the number of thymine molecules. A sample of RNA would show that there are equal numbers of adenine molecules and uracil molecules.
How many molecules are contained in a 5.20 g sample of dimethylmercury?
The answer is 1,357.10 ex.23 molecules.
Flask A contains 2 liters of ch4 g and flask B contains 2 liters of o2 g each gas sample has the same?
number of molecules
How many molecules are contained in a g sample of dimethylmercury?
1.24*10^22
A sample of water contains 3.6 moles of hydrogen atoms How many molecules of water are present in this sample?
3.6 moles hydrogen atoms (1 mole water/2 mole H)(6.022 X 1023/1 mole water molecules) = 1.1 X 1024 molecules of water =======================
How many molecules of H2(g) are there in a 21.25 gram sample?
The number of molecules is 6,3985.10e24.
How many molecules of water does a 50g sample of H2O have?
The number of water molecules is 16,728.10e23.
Why are there always the same number of adenine and thymine in a molecule?
Chemical analysis has shown that the number of adenine molecules in a sample of DNA is always the same as the number of thymine molecules. A sample of RNA would show that there are equal numbers of adenine molecules and uracil molecules.
How can you get the molar mass of insulin knowing just the grams of insulin in a sample and the number of molecules that that sample contains?
by weighing out the bit of insulin that you want to find how much of it there is
What are the examples of organic molecules?
sample of complex organic molecules
How many moles of chromate ions are present in a sample that contains 3.71 moles of iron-III- chromate Fe2-CrO4-3. Dashes are parentheses.?
Fe2(CrO4)3 3.71 moles Fe2(CrO4)3 (3 moles CrO4/1 mole Fe2(CrO4)3) = 11.1 moles of chromate
At a certain temperature and pressure 0.02 mol of carbon dioxide has a volume of 3.1 L A 3.1 L sample of hydrogen at the same temperature and pressure?
contains the same number of molecules
Why aspirin gives voilet clr with ferric chloride?
Ferric chloride, or iron(III) chloride will not react with aspirin. It will, however, react with salicylic acid, which is used to synthesize aspirin. In this light, adding an aqueous ferric chloride solution to a sample of aspirin is a good way to see if there is any unreacted salicylic acid. A purple color is an indication of salicylic acid. A sample of pure aspirin should not exhibit any color change.
How many moles in NaCHO3?
A mole is a defined number of atoms/molecules of an element/compound. Therefore, the number of moles of NaCHO3 will depend on the mass of NaCHO3 that you have. To calculate the number of moles in a known sample, divide the mass of the sample (in grams) by the molecular weight.
How many molecules are contained in a 6.30g sample of dimethylmercury?
1.64×1022 molecules
How many molecules are contained in a 7.85-g sample of dimethylmercury?
2.05×1022 molecules
How many molecules are present in the C3H4 sample?
1.51 x 10 ^23 molecules
