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 H2O molecules are contained in 1.50 L of water? Assume the density of water...
How many molecules of water are in one drop if there are 3.50×1022 molecules in 1.00 g (given that 1 mL = 22 drops)? Assume that 1 mL = 22 drops is an exact equivalent and does not affect the number of significant digits in the answer. (Assume density of water is 1.00 g/mL.)
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)
+ 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?
If drinking water contains 1ppm of lead, how many milligrams of lead are contained in 1L of drinking water? What is the molarity of lead in drinking water? (assume density of drinking water is 1.00g/mL) ***please do not show as one massive fraction conversion, I would really like it broken into parts. Thank you*****
1) Sample of nitrogen gas, N2 weighs 15.3 g. How many molecules N2 and how many atoms of N are present in this sample? 1a)A mixture of sand and salt is found to be 57 percent NaCl by mass. How many moles of NaCl are in 47 g of this mixture? 1b) What is the mass of 4.6*10^23 of ammonia? 1c) A water solution of sulfuric acid has a density of 1.67 g/mL and is 65 percent H2SO4 by mass....
How much energy is required to change the temperature of 1.50 L of water from 25.0 °C to 100.0 °C? The specific heat capacity of water is 4.184 J/g·°C; density H2O = 1.0 g/mL; 1000 mL = 1 L Which of the following pairs of aqueous solutions will react to produce a precipitate (an insoluble solid) when mixed together? Group of answer choices Li2CO3 and HClO4 Li2SO4 and SrCl2 NaCl and KBr NaOH and HCl
5) How much heat is required to warm 1.50 L of water from 25.0 °C to 100 °C? (Density of water = 1,0 g/mL for the water; Cs of water 4.18 J/g oC). Evaporating sweat cools the body because evaporation is an endothermic process which can be expressed using the following reaction: H20 (g) AHOxn +44.01 kJ H2O (I) Estimate the mass of water that must evaporate from the skin to cool the body by 0.5 °C. Assume a body...
1. how many milliliters of water at 15 degrees C with a density of 1.00 g/ml must be mixed with 75 mL of instant coffee at 100 degrees C so that the reuslting combination will have a temperature of 60 degrees C? Assume that coffee and water have the same density and the same specific heat. 2. a cylinder has a mass of 3262.6 mg. a graduated cylinder filled with water had an initial volume of 1.42 L. when the...
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.
can you show ur work
4. How many molecules are present in one mole of glucose, C6H1206? 5. A person drinks 1.50-10 grams of water (H2O) per day. How many moles is this? And how many molecules? 6. How many moles of marble, CaCO3, are there in a 275 g piece of marble? And how many molecules?