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Emergency treatment of cardiac arrest victims sometimes involves injection of a calcium chloride solution directly into the heart muscle.
1- How many grams of calcium chloride are administered in an injection of 5.0 mL of a 5.0 % m/v calcium chloride?
2- How many milliequivalents of calcium ion are injected in the 5.0 mL does?
3- What is the concentration of the 5.0% m/v calcium chloride solution in units of molarity?
4- What is the osmolarity of the 5.0% m/v calcium chloride solution?
5- If you put a red blood cell into this 5.0% m/v calcium chloride solution, explain what would happen to the cell during the process of osmosis and why?
Draw the carboxylic acid produced from the acid hydrolysis of butyl acetate (butyl ethanoate)
Solid iron reacts with chlorine gas to produce iron(III) chloride. If 10.0 grams of iron reacts with excess chlorine gas and 18.5 grams of iron(III) chloride is produced
If 28mL of 5.2M H2SO4 was spilled, what is the minimum mass of NaHCO3 that must be added to the spill to neutralize the acid?.
How much sodium nitrate (NaNO3), in grams, should be added to water to prepare .05L of solution with a molarity of .25M?
An alloy of iron contains 75.0% iron and 25.0% other elements. How many grams of iron are present in 150. g of the alloy?
we then titrated both the aqueous and organic layer. for organic layer, we used 0.1M (S2O3)2- for aqueous layer, we used 0.01M (S203)2- find concentration [I]2 (subscript 2) for aqueous and organic layer
Important information about Molar concentrations, Calculate the molar concentrations, I-, disulfur octaoxide, disulfur trioxide.
A 59.0-g sample of an alloy at 93.0°C is placed into 264 g of water at 22.0°C in an insulated coffee cup. Assume that no heat is absorbed by the cup.
What are the concentrations of HSO4-, SO42-, and H+ in a 0.255 M KHSO4 solution? (Hint: H2SO4 is a strong acid; Ka for HSO4- = 1.3 10-2.)
A 12 kg block of ice has a temperature of -10.0 degrees celsius. The pressure is one atmosphere. The block absorbs 4.50 times 10 to the sixth power J of heat. What is the final temperature of the liquid water?
A gas weighing 33.62 g occupies a 10.00 liter flask at 27oc and 730 torr of pressure. what is the molar mass of the gas?
The dipole moment of HBr (a polar covalent molecule) is 0.784 (debye), and its percent ionic character is 11.6 . Estimate the bond length of the bond in picometers.
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