What was the possible source of error
A student found that her mixture contained 6% NH4Cl, 29% NaCl, and 75% SiO2. Assuming that her weighing and calculations were correct, what was the possible source of error in her experiment?
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Show the mechanism that forms the three products. Predict the major and minor products. Explain your choices.
How many moles of oxygen are needed to react completely with 2.20×10^24 molecules of acetylene?
Neutron stars consist only of neutrons and have unbelievably high densities. A typical mass and radius for a neutron star might be 2.2 1028 kg and 2.0 103 m. (a) Find the density of such a star.
Suppose that ammonia (a monoprotic base), applied to a field as a fertilizer, is washed into a farm pond containing 3.0 × 106 L of water. If the pH of this pond is found to be 9.81, what volume of liquid ammonia found its way into the pond?
An airtight box has a removable lid of area 1.1 10-2m2 and negligible weight. The box is taken up a mountain where the air pressure outside the box is 0.75 105Pa. The inside of the box is completely evacuated. What is the magnitude of the force re
The normal boiling point of the solution is 61.51?C, the normal boiling point of CCl4 is 61.2?C. The boiling point constant for CCl4 is 4.95 K · kg/mol. What is the molar mass of the compound?
In about 200 words, outline the issues that a user might encounter when using a web browser on a smart phone to view a web page. explain what a web designer might do to address those issues.
certain anesthetic contains 64.9% C 13.5% h and 21.6% O by mass. at 120 degrees celsius and 750 mm hg, 1 l of the gaseous compound weighs 2.3g what is the molecular formula of the compound'
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