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🧪 Chemistry

Chemistry is the scientific study of the properties and behavior of matter. It is a natural science that covers the elements that make up matter to the compounds composed of atoms, molecules and ions: their composition, structure, properties, behavior and the changes they undergo during a reaction with other substances.

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Q: Are enzymes proteins
4 answers
Q: What is the reactions and the products of the reactions
2 answers
Q: Can energy be released during chemical reaction can it be absorbed can chemical reaction take place in which energy is neither absorbed or released
1 answer
Q: What is the theoretical yield of reaction
2 answers
Q: What is stoichiomerty
1 answer
Q: What type of molecule is 3- hexyne
2 answers
Q: Which molecule is active during the last step of DNA replications
1 answer
Q: How does heating water increase the amount of solute dissolved
4 answers
Q: What is the important difference between how concentration and solubility are measured
1 answer
Q: What is a block polymer
1 answer
Q: What is revealed in the reaction ca2 plus aq plus 2oh-aq -- caoh2 s h16.71
2 answers
Q: Why do elements the same group have similar properties
2 answers
Q: What are two major classes of mixtures
1 answer
Q: According to the phase diagram for water how is the state of water determined
1 answer
Q: Which class of macromolecules is not organized in repeating units of monomers
1 answer
Q: What is the molality of a solution made by dissolving 2 moles of NaOH in 10Kg of water
2 answers
Q: Energy can be created or destroyed during a chemical reaction
2 answers
Q: What would cause entropy to increase in reaction
2 answers
Q: Convert to -15 o C the Kelvin scale
2 answers
Q: What is the strong nuclear force that holds the nucleus together
1 answer
Q: What happens to a substances temperature during a phase change
1 answer
Q: What is a heterogenous mixture
2 answers
Q: How is an exothermic reaction indicated an equation
1 answer
Q: What is an in situ reaction
1 answer
Q: Is the element He a compound
2 answers
Q: Which one of the following does not describe an acid
1 answer
Q: A solid that has a high melting point and conducts electricity in solution is what kind of solid
2 answers
Q: How the deposition formed
1 answer
Q: What happens to the reactants in a chemical reaction
2 answers
Q: What happens to a positively charged object place within a positive electric field
1 answer
Q: Which is not a characteristic of a compound
1 answer
Q: Gold-184 and gold-186 are different of gold
3 answers
Q: Is 5 basic pH
2 answers
Q: What is the pH of a solution with H plus 2.3 10-12
2 answers
Q: Fructose and glucose are examples of what
2 answers
Q: Is K2CO2 soluble in water
2 answers
Q: Which of these elements tend to be radioactive Am Ne K and U
3 answers
Q: How many joules of energy are necessary to heat a sample of water with a mass of 46 g
1 answer
Q: What is the correct configuration notation for noble gas Co
1 answer
Q: What is the Lewis formula for the octet rule for the ions ClO2
1 answer
Q: The Quantum Number that defines the shape of space an electron most likely resides in is the quantum number.
1 answer
Q: What is the total reduction potential of a cell in which lithium (Li) is reduced and mercury (Hg) is oxidized
1 answer
Q: What would represent an increase in entropy
1 answer
Q: Basic unit of length in the metric system equal to 3937 inches
2 answers
Q: In the triglycerides molecules shown below what are the three molecules attached to the glycerol molecules
1 answer
Q: What is the energy of a photon that emits a light of frequency 6.42 times 1014 Hz
1 answer
Q: How does pressure speed up a chemical reaction
1 answer
Q: How electrolysis is an example of redox reaction
1 answer
Q: What information does the second quantum numbers of an electron give
1 answer
Q: She measured 5.0 kg of substances x at noon Tuesday shaunameasured 1.25 kg of substance x what is the half- life of substance x
1 answer
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