Question posted by kimgrogan
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| Bounty | Status | Category | Sub-Category | Question | Due | $0.75 | Closed, closed | Chemistry | General Chemistry |
grams of solute
Calculate the grams of solute needed to prepare each of the following: 2.0L of a 4.0M NaOH solution Answer 2 SF's 6.0L of a 0.70 M CaCl2 solution Answer 2 SF's |
Apr. 07, 2011 | $1.00 | Closed, closed | Chemistry | General Chemistry |
moles of solute needed
Calculate the moles of solute needed to prepare each of the following 3.0L of a 1.6 M CaCl2 solution Express answer in 2 SF's 6.0 L of a 0.90M NaOH solution Express answer in 2 SF's |
Apr. 07, 2011 | $0.75 | Closed, closed | Chemistry | General Chemistry |
iv conversions
A patient received 2.0g of NaCl in 8 hours. How many mL of a 0.90% (m/v) NaCl (saline) solution were delivered |
Apr. 07, 2011 | $1.00 | Closed, closed | Chemistry | General Chemistry |
solids formed with mixing of salts
Determine whether a solid forms when solutions containing the following salts are mixed. NaF and AgNO3 Express answer as a chemical equation. Identify all of the phases in answer. Enter no reaction... |
Apr. 06, 2011 | $1.00 | Closed, closed | Chemistry | General Chemistry |
saturated solutions
Using the table, determine whether each of the following solutions will be saturated or unsaturated at 50degrees C Solubility (g/100g H2O) Substance 20 deg. C 50 deg. C KCl 34.0 42.6 NaNO3 88.0 114.0... |
Apr. 07, 2011 | $0.50 | Closed, closed | Chemistry | General Chemistry |
pressure conversions
A gas mixture containing oxygen, nitrogen and neon exerts a total pressure of 1.20 atm. If helium added to the mixture changes the total pressure to 1140 torr, what is the partial pressure (in atm)... |
Apr. 02, 2011 | $0.50 | Closed, closed | Chemistry | General Chemistry |
conversion
How many grams of NH4NO3 are needed to produce 10.0 L of oxygen when ammonium bitrate is healed to 350 degrees C at 0.950 atm, and decomposes to produce nitrogen, water and oxygen gases in the... |
Apr. 02, 2011 | $0.50 | Closed, closed | Chemistry | General Chemistry |
pressure change in closed container
A scuba diver 40ft beneath the ocean's surface inhales 50.0 mL of compressed air in her scuba tank at a pressure of 3.00 atm and a temperature of 8 degrees C. What is the pressure of air in the lungs... |
Apr. 02, 2011 | $0.50 | Closed, closed | Chemistry | General Chemistry |
atm conversions
When the amount and pressure of a gas are held constant, what final temperature, in degrees Celsius, is needed to cause the volume to change from 4.00L (at 273K) to 1200mL? |
Apr. 05, 2011 | $0.50 | Closed, closed | Chemistry | General Chemistry |
atm conversions
Determine the new volume of methane (CH4) when the pressure is changed from 0.80 atm to 2500 torr, and the starting volume was 25mL and the temperature remains unchanged. |
Apr. 02, 2011 |
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