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When studying for the HESI exam, the nursing school entry exam, I'm having an issue with the chemistry section as it's the only class I did not take at any point during my 2 year degree. Any suggestions for learning basic chemistry, QUICKLY.
An aqueous solution contains 4.90% NH3 (ammonia) by mass. The density of the aqueous ammonia is 0.979 g/mL. What is the molarity of NH3 in the solution?
Exactly 5.02 grams of an unknown gas was sealed in a 3.0 L flask at 37.0oC and a pressure of 1.25 atm. Which one of the following is most likely to be the unknown
Determine number of moles of oxygen molecules are in the cylinder and compute the mass of solid C 2 H 3 NaO 2 required mixing with 60.0mL of .125M C 2 H 4 O 2 to form a ph 4.20 buffer?
Question- Balance the following equation for the reaction in an acidic medium by the ion-electron method: Fe2++MnO4-------Fe3++Mn2+
Calculate the expansion work done when 50g of water is electrolysed under constant pressure at 25C.
Problem- A 17.75liters sealed vessel contains 1.512g of hydrogen , 4.000g of oxygen, 4.750g of florine and 33.52g of kypton at 28.0°c. 1) What is the pressure in the vessel
What is the pH of a solution containing 50.00 mL of 1.0 M HCl and 50.00 mL of 1.0 NH3? The Kb for NH3 = 1.8 x 10-5.
a gas is enclosed in a cylinder fitted with a piston. the volume of the gas is 2.00 l at 1.00 atm pressure. the piston
When 1.661 g of this compound (molar mass = 155.32 g/mol) was burned in a bomb calorimeter, the temperature of the calorimeter (including its contents) rose by 4.193°C. What is the heat capacity (calorimeter constant) of the calorimeter
A gas sample occupying a volume of 64.7mL at a pressure of 0.971 atm is allowed to expand at constant temperature until its pressure reaches 0.389atm. what is the final volume
With respect to the Cooper pair model, explain why increasing temperature reduces the effectiveness of low-temperature superconductors.
An average man (mass = 70 kg, specific heat - same as water) produces about 10^4 kJ of heat each day through metabolic activity.i) If he were an isolated system, what would his temperature rise be in one day?
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