How many molecules of liquid ethyl mercaptan, C2H6S, are contained in a 1.0 ?μL sample? The density of ethyl mercaptan is 0.84 g/mL. (show all work)
How many molecules of liquid ethyl mercaptan, C2H6S, are contained in a 1.0 ?μL sample? The...
How many H2O molecules are contained in 1.50 L of water? Assume the density of water is 1.00 g/mL. How many H atoms are contained in 1.50 L of water? Assume the density of water is 1.00 g/mL. please show work, thanks
how many molecules are contained in a 7.05 How many molecules are contained in a 7.05-g sample of dimethylmercury? Express your answer in molecules to three significant figures. What is the percentage of mercury (by mass) in the sample? Express your answer as a percent to four significant figures.
+ 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?
A sample of carbon dioxide is contained in a 500.0 mL flask at 0.928 atm and 18.1 C. How many molecules of gas are in the sample?
How many molecules are contained in each of the following number of moles? Report your answer using two significant figures. a. 5.6 mol of penicillin molecules b. 0.84 mol of NH3 molecules a. × 10 molecules
A vinegar sample contained 4.60% acetic acid . How many mL of 0.450N sodium hydroxide would be required to titrate 25.00 mL of hte vinegar sample? Assume the density of the sample to be 1.00 g /mL^-1
1. How many moles of HNO3 are contained in 1.0 mL of concentrated nitric acid? Please try to show me your calculations so I can learn how to do it. 2. Draw a lewis electron dot structure for the nitronium ion, NO2+. Show all valence electrons.
A sample of sulfur trioxide (SO3) weighs 5100g. How many molecules are contained in this sample? Use 80.063 the molar mass of SO3. Use 6.022 x 1023 mol-1 for Avogadro's number. Report your answer in scientific notation.Your answer should have two significant figures.
What is the mass of a 400-mL sample of ethyl alcohol if its density is 0.8 g/mL? Please show work.
How many molecules of sucrose (C12H22O11, molar mass = 342.30 g/mol) are contained in 14.3 mL of 0.140 M sucrose solution?