a box contain 2.5*10^21 hydrogen molecules. how many moles of hydrogen does this represent? what is the mass of the gas?
a box contain 2.5*10^21 hydrogen molecules. how many moles of hydrogen does this represent? what is...
how many moles of THC does this 23 μg represent? how many molecules?
A sample of glucose, C6H12O6, contains 1.270×1021 carbon atoms. 1.How many atoms of hydrogen does it contain? 2.How many molecules of glucose does it contain? 3.How many moles of glucose does it contain? 4.What is the mass of this sample in grams?
How many moles of water, H2O, contain 2.0×10^22 molecules of water?
+ 6. How many moles of CsHız are contained in 3.10 x 10" molecules? 7. What is the mass in grams of 6.56 x 10^2 molecules of ascorbic acid (C.H.O.)? TH Name Date Molar Mass, Molar Ratio, A- 8. How many stoms of carbon are in a sample of acetone (C,H,O) that has 3.00 mol of hydrogen? 9. How many atoms of hydrogen are in 10.00 mL of ethanol (C110) if the density of ethanol is 0.789g/mL?
3. Consider 1.00 mole of hydrogen gas, H2. How many dihydrogen molecules are present? How many hydrogen atoms are present? What is the mass of this sample? 4. Ethanol has a molecular formula of CH3CH2OH. a. What is the average mass of one molecule of ethanol? b. What is the mass of 1.000 moles of ethanol? c. What is the mass of 0.5623 moles of ethanol, CH3CH2OH? d. How many moles of are present in a 100.0 g sample of...
2.1 moles of oxygen atoms represent how many molecules
In 10 ml of 2M sodium hydroxide, how many grams and moles does it contain and what is the density.
acetaminophen has the formula C8H9NO2. a dose contains 0.500g A) how many moles does 0.500g contain? B) how many molecules does 0.500g contain? C) how many C atoms are in 0.500g?
a sample of male sex hormone testosterone, C19H28O2, contains 3.18 x 10^21 atoms of hydrogen. How many atoms does it contain? How Many molecules of testosterone does it contain?
Part D How many molecules (not moles) of NH3 are produced from 6.91*10-4 g of H? Express your answer numerically as the number of molecules. View Available Hint's) Hint 1. How to approach the problem Hint 2. Calculate the number of moles of hydrogen gas Hint 3. Calculate the number of moles of ammonia produced