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A sample of hard water has 1.5g Ca+2 in every 500mL of water. Calculate the molality an ppm Ca+2 in this sample.
An unknown compound contains only carbon, hydrogen, and oxygen (C x H y O z). Combustion of 5.50g of this compound produced 8.07g of carbon dioxide and 3.30g of water.
In which one of the following species is the best Lewis structure a resonance structure. a. NH3 b. CO2 c. SF6 d. O2 e. CO32
A certain reaction has an activation energy of 70.0 Kj/mol and a frequency factor of A1 = 4.80×1012. A) What is the rate constant, k , of this reaction at 30.0 C
A solution of Chloroform (CHCl3) and Acetone ((CH3)2CO) exhibits a negative deviation from Roult's law. The result implies that
while a person with inherited MCAD deficiency will experience life-threatening symptoms (lack of energy and coma) after about a day of fasting
What is the wavelength of an electron (mass= 9.11 x 10^-31 kg) moving with a velocity
the weak base methylamine is titrated with 0.10 M HNO3. Calculate the pH after 20.0 mL and 60.0 mL acid addition (HNO3).
If a 88.2 gram charcoal briquette (assume pure carbon) is burned in an excess of oxygen, what mass of CO2 is produced by the reaction
This is a study guide for naming of organic compounds, specifically alkanes and substituted alkanes. Thirty (30) questions and answers are also included. The study guide shows you
if 162 of wet is collected over water at 24 and a barometric pressure of 736 how many grams of have been consumed? the
If atom X forms a diatomic molecule with itself, the bond is A) ionic B) polar covalent C) nonpolar covalent D) polar coordinate covalent
When blood is donated, sodium oxalate solution is used to precipitate Ca2+, which triggers clotting. A 104 mL sample of blood contains 9.7 x 10^-5 g Ca2+/mL. A technologist treats the sample with 100 ml of .1550 M Na2C2O4. Calculate [Ca2+] after t..
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