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The mass of a beaker is 123.2537 g. After carrots were added to the beaker, its mass is 128.2671 g. The sample was then placed in the oven to remove water. The final mass of the beaker and carrots is 123.9088. What is the percent water in the carrot sample?
There are conventions for naming and constructing the formulas for acids and bases just as there are for other types of compounds. There are 3 main rules for naming acids.
A mixture of CaCO3 and CaO weighing 0.630 g was heated to produce gaseous CO2. After heating, the remaining solid weighed 0.464 g.
Calculate the volume in mL of a solution required to provide .85 g of acetic acid (CH3COOH) from a .30 M solution
An enzyme-catalyzed reaction produces a product that has a maximum absorbance at 412 nm. The extinction coefficient is 4000 M^-1 cm^-1. A 10-to-1 dilution of the enzyme is made and 20 microliter of the dilution are put into a cuvette with 80 micro..
Determine At what temperature does C 6 H 6 boil when the external pressure = 470 torr?
A mixture of 4.0 mol of H2 and 2.0 mol of O2 is placed in a sealed evacuated container made of a perfect insulating material at 27C. The mixture is ignited with a spark and it reacts to form liquid water. Find the temperature of the water.
If you wish to obtain 10.0 grams of copper metal from copper(II) sulfide, what mass of copper(II) sulfide (in grams) must you use?
The best means of personal protection from radiation for emergency responders is the implementation of three basic principles: time, distance and shielding. Please show your work when answering the following questions.
You have 50 mL of 0.010 fully protonated histidine. how many milimoles of base must be added to bring histidine solution to pH equivalent to the pI of histidine.
If sealed glass bottle containing an organic solvent is dropped and breaks, pieces of glass may be propelled outwards because of build-up pressure that forms in the bottle. explain which is more dangerous a liquid pentane or liquid decane
essential to prevent uncontrolled raise of the rate of chain reaction in the nuclear power plant. Can you try to find additional information how rate of chain reaction
What is the ph of a solution that is 0.0020 M acetic acid and 0.010 M sodium acetate? Note: the pKb for sodium acetate is 9.25
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