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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.
1. What are the advantages of color and TLC tests? Under what circumstances might a color test be preferred over TLC ? 2. TLC data have been used as evidence in court cases. What do you think of this practice ? 3. How do ...
Explain and show the Chemical properties of tihydric alcohol
(a) The mass spectrometer in Figure 2.12 has a magnet as one of its components What is the purpose of the magnet? (b) The atomic weight of Cl is 35.5 amu. However, the mass spectrum of Cl (Figure 2.13) does not show a pe ...
When 100ml of M/10 H 2 SO 4 is mixed with 500ml of M/10 NAOH then nature or resulting solution and normality of excess of reactant left is
Identifying of an Unknown Substance Introduction: Elements and compounds are pure substances. A compound consists of two or more elements that are chemically bonded in definite proportion. Based on the constituent elemen ...
An unknown solid is entirely soluble in water. On addition of dilute HCl, a precipitate forms. After the precipitate is filtered off, the pH is adjusted to about 1 and H2S is bubbled in; a precipitate again forms. After ...
1. Use the balanced equation to answer the question. 2 C 2 H 6 ( g ) + 5 O 2 ( g ) 4 CO( g ) + 6 H 2 O( g ) How many moles of O 2 are needed to react completely with 1.8 moles of C 2 H 6 ? 2. Enter your answer in the pro ...
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 ...
1. According to estimates, 1.0L of seawater contains on the average 4.0x10 -9 g of gold. If gold is worth $390 per troy ounce and a troy ounce weighs 31.103 g , how many cubic meters of seawater would have a million doll ...
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?
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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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