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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: Burning gasoline in a car's engine a physical change or a chemical change
2 answers
Q: A tire has pressure of 325 kpa at 10c if the temperature of the tire rises to 50c and the volume remains constantwhat is new pressure
2 answers
Q: Is fat-reduced cocoa an acid or alkali
1 answer
Q: 8.02 grams of solute in 861 grams of water lower the freezing point to -0.430 c
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Q: Specific gravity of kerosene
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Q: One test to determine if a mixture is a true solution or calloid
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Q: Describe the uses for the range of finishing looks
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Q: The products of the reaction Mg plus HCl are
1 answer
Q: Is aluminum polar or non polar
8 answers
Q: Simple explanation on how salicylic acid acetyl is made
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Q: What is this inspect element
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Q: What statement is most consistent for an acid with a pH of 4
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Q: Cl2(g) plus 2Kl(aq)-- and gt I2(s) plus 2KCl(aq) Calculate the mass of iodide produced when 4.50x1000g of chloride gas is bubbled through an escess amount of potassium iodide solution
1 answer
Q: Is ripping up a paper a chemical or physical change
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Q: In what way are liquids and solids alike
1 answer
Q: If all the hydrogen bonds in a DNA molecule were to break what would happen
1 answer
Q: Does sodium and chlorine have the same or different reactivities
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Q: What is the formula for ionic compound for Boron and Bromine
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Q: A 0.175 M weak acid solution has a pH of 3.25. Find Ka for the acid.
2 answers
Q: Can I refill a Ronson Jetlite lighter with a Bernzomatic Butane Canister
1 answer
Q: When elements react they transfer or share
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Q: Why is iron a solvent and carbon a solute
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Q: Using the particle theory of matter to explain what the difference is between a saturated and an unsaturated solution
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Q: Does baking soda contain metallic and non metallic elements which ones are which
1 answer
Q: Using the terms solute and solvent what is the difference between dilute and a concentrated solution
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Q: Which process is responsible for returning nitrogen to the air
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Q: Which chemical change is most likely to involve bubbling or an odor
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Q: The first stage in the information of coal is
2 answers
Q: What is the pH of dish washing liquid
9 answers
Q: How many atoms are in hs2
3 answers
Q: Do wax sink or float
2 answers
Q: Is MgS insoluble
1 answer
Q: What lld in blood test
1 answer
Q: Why do you add distilled water to acid solution
3 answers
Q: An increase in the atomic number the atomic radius moving from left to right across a period.
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Q: Atoms with many electron shells will let go of their electrons more easily than those with fewer shells.
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Q: Wax like all matter comes in many phases. What are the three possible phases
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Q: The periodic table arranges elements by increasing .
2 answers
Q: Pure substances can be separated by physical means. true or false
1 answer
Q: How is heat involved in the sublimation of carbon dioxide when it changes from a solid to a gas
1 answer
Q: What greenhouse gases contain carbon
1 answer
Q: What ion would the selenium atom shown below bond with to form a stable ionic compound
1 answer
Q: Rubidium is in the same group as lithium (Group 1). What is the formula of rubidium nitride
1 answer
Q: How is most of the oxygen in earth produced
1 answer
Q: Why do lumberjacks wear kevlar
2 answers
Q: . Hydrogen bonds and van der Waals forces are types of
2 answers
Q: Distilled water is about the only completely neutral solution. What is its pH
3 answers
Q: Smell of chlorine gas
1 answer
Q: A is a device that produces electricity by converting chemical energy into electrical energy
1 answer
Q: A hydrogen fuel cell is more efficient than a combustion reaction because very little of the released energy is released as . When used at home a fuel cell eliminates the need for because the cell is
1 answer
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