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Determining the mass and mass % of the atoms in a molecule.
1. Compute the mass of fluorine (in grams) in 37.1mg of calcium fluoride, CaF2.
2. Conclude the mass % of carbon, hydrogen and oxygen in acetate, C2H3O2.
An artist's statue has a surface area of 15 ft2. The artist plans to apply a gold plate coating to the statue and wants the coating to be 25 µm thick. How many grams of gold will be required for the
Identifying of an Unknown Substance I need the chemistry post lab report as same as you did once before. The original prelab report you did and lab experiment details are attached in pdf. I also attached the Error analys ...
A gas cylinder is filled with pure ammonia. Which term or terms could be used to describe the contents of this gas cylinder?
An ancient gold coin is 2.2 cm in diameter and 3.0 mm thick. It is a cylinder for which volume = (p)(radius)2(thickness). If the density of gold is 19.3 g/cm3, what is the mass of the coin in grams?
Dolomite is a mineral consisting of calcium carbonate and magnesium carbonate. When dolomite is strongly heated, its carbonates decompose to their oxides (CaO and MgO) and carbon dioxide is expelled. (a) Write separate e ...
Toxicologists use the term LD50to describe the number of grams of a substance per kilogram of body weight that is a lethal dose for 50 percent of test animals. Calculate the number of arsenic(VI) oxide molecules correspo ...
Your teacher has just asked you to measure out 2.25 moles of Sodium Bicarbonate. Sodium Bicarbonate has a Molecular Formula of NaHCO3. Using a Periodic Table, calculate the molecular mass of Sodium Bicarbonate to 2 decim ...
Lab: ISOLATION OF A NATURAL PRODUCT BY STEAM DISTILLATION Procedure Weigh approximately 5.0 g of spice into a 250 mL round bottom flask and add 150 mL of water. Assemble a simple distillation apparatus. Careful heating i ...
Part 1: the Chemistry and qualitative analysis of cations: group I 1. Propose a separate Ag + from solution containing Fe 2+ and Sn 4+ 2. Use le Chatlier's principle to predict what will happen S2in the following equatio ...
Explain the structure of a water molecule and how hydrogen bonding leads to some of its very special properties. Be sure to include how these properties are important to life on Earth.
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A cola-dispensing machine is set to dispense 9 ounces of cola per cup, with a standard deviation of 1.0 ounce. The manuf
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