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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: One mole of which element has the smallest mass
8 answers
Q: What kind of reaction is Kl(aq) plus AgNO3(aq) Agl(s) plus KNO3(aq)
2 answers
Q: Why should the total amount of liquids introduced into a test tube not exceed half the capacity of the test tube
1 answer
Q: What can acid can do to metal stone and other substances
1 answer
Q: What kind of reaction is 2H2O2 2H2O plus O2
5 answers
Q: Property for plasticine
2 answers
Q: Covalent bonds are sometimes shown using electron dot diagrams.
2 answers
Q: How does an atom of potassium-41 become a potassium ion with a plus 1 charge
1 answer
Q: How does an atom of potassium-41 become a potassium ion with a plus charge
1 answer
Q: Write the chemical equation representing the resrstion of ethene from ethanol
1 answer
Q: Write the chemical equation representing the preparation of ethene from ethanol
1 answer
Q: Name the two elements which are present both in cng and petroleum
1 answer
Q: What is the balanced chemical equation for the synthesis of sodium bromide from sodium bromine
2 answers
Q: What would cause the greatest increase in the motion of molecules in a system
2 answers
Q: A liquid dissolved in a gas results in a solution that is what
1 answer
Q: Sodium and chlorine can bond together. Sodium gives chlorine a needed electron. What is chlorine's charge after accepting the electron
2 answers
Q: Why is hydrogen listed in column 1 even though it is not a metal
9 answers
Q: Through what method can mercury be absorbed
1 answer
Q: What is an example of incomplete combustion of sucrose
2 answers
Q: Calculate the osmotic pressure of a solution containing 17.85 mg of hemoglobin in 15.8 mL of solution at 22 and 8728C . The molar mass of hemoglobin is 6.5 and times104 gmol.
1 answer
Q: What is a good sentence for electron dot diagram
1 answer
Q: Gold colored ring has a mass of 18.9 grams and a volume of 1.12 ml. Is the ring pure gold (The density of gold is 19.3 gml.) Explain.
1 answer
Q: An element that has the electron configuration Ne3s23p5 is in which period
2 answers
Q: 8. What pressure would be required to contain 100.0 g of SO2 gas in a 25.0 L container at a temperature of 100. and 61616C
1 answer
Q: The two most common ions found in ocean water are --
2 answers
Q: If the reactants of a reaction are HCI and NaOH what is the product
5 answers
Q: At the end of cellular respiration energy is stored in the bonds of what molecules
1 answer
Q: At the beginning of cellular respiration energy is stored in the bonds of what molecules
1 answer
Q: Which reactions shows a physical change
2 answers
Q: What is the release high energy electron from the nucleus
4 answers
Q: A student is given a small amount of unknown tan-colored liquid substance. This unknown liquid is placed into a glass of water and mixed. Despite mixing the tan liquid remains separated from the water
1 answer
Q: Why did it take so long for scientists to understand atoms
1 answer
Q: What are state symbols used for in chemical equations
1 answer
Q: What three things that store energy in chemicals
1 answer
Q: Discovery of the atomic bomb was partially based on his studies.
3 answers
Q: What is the chemical formula for nickel (II) permanganate
2 answers
Q: What is the chemical formula for lead (II) phosphide
11 answers
Q: What is the answer for what add special liquids to the sperm cells to make semen
1 answer
Q: Two substances that will be attacked by a corrosive acid
1 answer
Q: Generally a complete valence shell holds how many electrons.
4 answers
Q: During what phase change does the arrangement of water molecules become most orderly
9 answers
Q: What is the molality of a solution that has 6 mol of cacl2 in 3kg of water
2 answers
Q: What branch of natural science is the study of the interactions between compounds and molecules
1 answer
Q: What are the reactants and products common to all neutralization reaction
4 answers
Q: Is coal abundant
1 answer
Q: Explain the difference between a strong acid and a weak acid.
1 answer
Q: A representative element with eight electrons in its valence shell is said to be at .
3 answers
Q: What is the pH level of sodium acetate and distilled water
1 answer
Q: How do intermolecular forces affect the boiling of a liquid
4 answers
Q: What is an example of a chemical change that took a long time to occur
2 answers
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