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Chemistry

Delve into the study of matter, its properties, composition, structure, and the changes it undergoes during chemical reactions. Chemistry is the central science connecting other scientific disciplines.

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Questions
Q: The volume of a container is 40 cm3. It has a length of 4 cm a width of 2 cm. What is the height of the container
1 answer
Q: In the reaction A plus B C plus B what are the reactants
2 answers
Q: If Bromine has an atomic number of 35 and has 45 neutrons what is its mass number
1 answer
Q: . A mixture of oxygen hydrogen and nitrogen gases exerts a total pressure of 282 kPa. If the partial pressures of oxygen and hydrogen are 110 kPa and 106 kPa respectively what is the partial pressure
2 answers
Q: What would a significant source of phosphorus be provided by
1 answer
Q: Which condition applies when water boils at 100 and degC
5 answers
Q: When K plus and I- combine a(n) bond results.
2 answers
Q: What color tube for bilirubin direct
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Q: What does .925 cna inside a ring mean
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Q: Which of thew following best describes a property of water
3 answers
Q: Which pair of substances would most likely result in the production of a gas when reacting with an acid
1 answer
Q: Is rubidium and calcium an ionic compound
5 answers
Q: Name at least 4 other gases in the atmosphere besides oxygen and nitrogen
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Q: The attraction between various combinations of atoms will produce bonds which form molecules. True False
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Q: A mineral's ability to reflect light is a test for .
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Q: Iron silver and gold are all examples of .
3 answers
Q: Look at the periodic table. What is the charge on any ion formed by an alkaline earth metal
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Q: Aluminum oxide is decomposed balanced equation
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Q: The most active metals on the periodic table are found on the lower left upper right middle upper left or lower right
2 answers
Q: What is the atomic mass number of an atom of sodium that contains 12 neutrons
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Q: What is the differences between subscripts and coefficients
3 answers
Q: Electronegativity is defined as a measure of the tendency of atoms to attract electrons in a chemical bond. True False
1 answer
Q: Which element if combined with iodine will have the greatest attraction for the iodine electrons B C P
2 answers
Q: Which element if combined with chlorine will have the greatest attraction for the chlorine electrons N P As
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Q: In an acid-base titration equivalent quantities of hydronium ions and hydroxide ions are present a. at the beginning point. c. at the endpoint. b. at the midpoint. d. throughout the titration.
2 answers
Q: Why do the solid sodium hydroxide and aluminium powder not react when stored in a sealed container
2 answers
Q: Write an equation showing the ionization of hydrochloric acid in water
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Q: Which element if combined with sulfur will have the greatest attraction for the sulfur electrons
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Q: To test how fertilizer affects aquatic animals a student prepared four identical containers with water fleas. The student then added different amounts of fertilizer mixed with distilled water to three
2 answers
Q: The particles of a suspension are dissolved into the solvent.
2 answers
Q: Copper wire with a wooden handle being held in a flame after a few minutes what will most likely happen
1 answer
Q: Effects on some farmers used too much chemical fertilizers to replinish soil fertility
1 answer
Q: A stong acid will what
1 answer
Q: An acid produces what when it is dissolved in water
2 answers
Q: Ammonia can be classified as a base because in a chemical reaction with an acid ammonia will
1 answer
Q: Explain why lithium and beryllium form ions with different charges
3 answers
Q: Outline why atoms form ion
10 answers
Q: What is the chemical symbol for Mercury Gold Silver Arsenic Radon Plutonium Uranium Potassium Sodium Titanium
2 answers
Q: What kind of engine carries its own supply of oxygen
1 answer
Q: Does copper sulfate dissolve in alcohol
1 answer
Q: How many grams of H2 are needed to react with 2.40 g of N2
2 answers
Q: If an atom with an atomic number of 10 and a mass number of 24 would have
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Q: At STP which substance has metallic bonding
5 answers
Q: What are the similarities for freezing and melting
2 answers
Q: How much citric acid is in cranberry juice
1 answer
Q: The half-life of carbon-14 is 5730 years. How long will it take for the number of carbon-14 nuclei in a sample to drop to a quarter of the original number
8 answers
Q: Which oxide is used to bleach wood pulp in the manufacture of paper
1 answer
Q: Is Red and grey in color a qualitative property
1 answer
Q: Why For a water-cooled condenser the condenser is arranged so that water enters the condenser at the lowest point and leaves at the highest point
1 answer
Q: What is the name of AI(NO3)3
2 answers
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