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You are given the masses, in grams (g), and the volumes, in cubic centimeters (cm3), for a series of substances. Arrange them in order of increasing density(Lowest to Highest)
1- Gold 19.3g/1cm3
2- Chloroform 14.8g/10cm3
3- Copper 44.5g/5cm3
4- NaCl 43g/20cm3
5- Ice 92g/100cm3
6-Butane 2895g/5000cm3
Compute the pH if NaOH solution of the 10.00 mL has been mixed. pKa of HCOOH = 3.74
Calculate the molar concentration of OH - ions in an 1.37 M solution of hypobromite ion, BrO- (Kb = 4.0 10-6).
the first order decomposition of N2O5 at 238 K has a rate constant of 1.70 * 10-3. If the initial concentration of N2O5 is 2.88M,
400 ml of .50 M HNO3 is added to 200 ml of water. if 100% dissociation occurs, find the resulting pH.
The concentration of sugar (glucose, C6H12O6) in human blood ranges from about 80 mg/100 mL before meals to 120 mg/100 mL after eating.
What is the concentration of P retained in the soil (in mg P/kg)? What is the concentration of PO4 retained by the soil (in mg PO4/kg)?
Calculate the molarity of a solution made by adding 23.9 mL of concentrated potassium hydroxide (34.5 % by mass, density 1.46 g/mL) to some water in a volumetric flask
a mixture of 2- percent ammonia 55 percent hydrogen and 25 percent nitrogen by a volume 9.8 newton per square meter. what is partial pressure of ammonia?
Design a qualitative analysis scheme
Chemical reactions are typically faster when a catalyst is added. This is because... 1. Molecules are moving faster when a catalyst is added
How many ml of 0.318 M K2Cr2O7 are needed to completely oxidize 179 ml of 0.768 M tin (II) chloride to tin (IV)?
Combustion of a 0.1000 g sample of a compound containing only carbon, hydrogen, and oxygen in excess yields 0.1953 g CO2, and 0.1000 g H2O. A separate experiment shows that the molar mass is 90 Daltons. Calculate the mass percent composition.
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