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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: Name a part of the atom that contains protons and neutrons
1 answer
Q: What element has the chemical symbol He
2 answers
Q: Insert the appropriate coefficients in the blank space to balance the equation. SF4 plus H2O and acirc and 158 and 158 SO2 plus HF
2 answers
Q: How does the the reactivity of metals change when moving from left to right on the periodic table
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Q: What is the temperature at which paint ignites
1 answer
Q: The reactions that produce molecular oxygen (O2) take place in
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Q: Is grilling a steak endothermic or exothermic
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Q: In what type of reaction do burning flames and explosion occur
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Q: Why is water evaporation so important to leaves
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Q: What is a solid substance that has both shape and volume
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Q: How does Iron reacts with silver nitrate to produce aqueous iron(III) nitrate metal balance
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Q: Balance solid carbon disulfide burns in oxygen to yield carbon dioxide and sulfur dioxide gases.
2 answers
Q: Sentence with the word moisture
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Q: Calcium metal (Ca) can be produced by passing an electric current through molten calcium chloride (CaCl2). Chlorine gas (Cl2) is also formed. What is the balanced equation for this reaction
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Q: Is steel spring an insulator or conductor
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Q: Suppose 0.7542 g of magnesium reacts with excess oxygen to form magnesium oxide as the only product what would be the theoretical yield of the product
3 answers
Q: Carbon disulfide is prepared industrially by reacting carbon with sulfur dioxide according to the above equation. If 5.9 moles of carbon react how many moles of CS2 are produced
2 answers
Q: What is chemical potential energy Apex
3 answers
Q: Is corrosive a physical property
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Q: Coal is NOT classified as a mineral because
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Q: Saturated fat definition
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Q: In which sealed container would the organisms be able to continuously cycle O2 and CO2 gases
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Q: If magnesium (metal) has two valence electrons while chlorine (nonmetal) has seven how many chlorine atoms are needed to form an ionic bond with magnesium
2 answers
Q: The bond between two oxygen atoms (a molecule of oxygen air) has two characteristics. What are they
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Q: The valence electrons found in metals are different from nonmetals because .
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Q: Atoms with electronegativity differences below 0.4 generally form polar covalent bonds.
2 answers
Q: If 6 moles of a compound produce 84 J of energy what is the Hreaction in Jmol
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Q: What color lab tube is used for iron panel
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Q: Quelle est la formule chimique du diluant pour peinture
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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
1 answer
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
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Q: Is aluminum polar or non polar
8 answers
Q: Simple explanation on how salicylic acid acetyl is made
1 answer
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
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Q: Is ripping up a paper a chemical or physical change
2 answers
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
1 answer
Q: What is the formula for ionic compound for Boron and Bromine
2 answers
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
2 answers
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