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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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Q: What happens when copper and chlorine ions are combined together
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Q: Is copper chloride an electrolyte or non electrolyte
1 answer
Q: A patient is suffering from painful highly corrosive burns similar to acid and wheals have begun to appear on the skin. Which vesicant (blister agent) is susp
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Q: An atom of sulfur is represented by 3316S. How many neutrons are in the nucleus of this atom
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Q: Define a near-azeotropic refrigerant blend and give two examples.
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Q: Coal is considered a rock even though it consists of what
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Q: Are sodium and fluorine an ionic compound
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Q: How many atoms are found in 600 grams of iron
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Q: The density of mercury is 5427 kgm3. If the density of water is 1.0 gmL will mercury float or sink in water
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Q: If the temperature changes by 100 K by how much does it change in and degC
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Q: Why calcium chloride or silica is placed in desiccatorswhy should it be dried occasionally
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Q: In a properly written chemical symbol what is the first figure
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Q: If the particles of matter that make up a substance are relatively far apart and can move freely the substance is in a state.
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Q: Who was the first person to make slime
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Q: The molecular mass of the compound is 132 amu. What is the molecular formula
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Q: How many kinds of of atoms in a brass door handle
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Q: How do you separate gold from silver ore
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Q: If you add hydrochloric acid (HCl) to water what effect would this have on the H plus ion concentration On the pH
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Q: What happens when you mix TAP WATERand Bromothymol blue
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Q: What happens when you mix SODIUM HYDROXIDE and Bromothymol blue
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Q: What happens when you mix NaOH and Bromothymol blue
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Q: What is desorption means
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Q: How much energy is generated from freezing 2.5 water
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Q: Is 2H2O-2H2 plus O2 a redox reaction
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Q: Is plastic an acid
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Q: What form of carbon is extremely hard and is one of the few materials that can scratch glass
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Q: What charge would tungsten ion with 68 electrons have
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Q: The simple substances of matter are called
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Q: How many grams of NH3 can be produced from the reaction of 17.8 moles of H2 and a sufficient supply of N2 N2 plus 3 H2 and rarr 2 NH3
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Q: How much water in grams can be made from 1.95 and times 1024 hydrogen molecules Answer in units of g.
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Q: 2hcl plus ca(oh)2 oxidizing agent
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Q: What forms when covalant bonds form
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Q: How many sigma and pi are in c14h10
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Q: Plants counteract the greenhouse effect by removing what during photosynthesis.
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Q: The element fluorine has 9 electrons. Which is the electron configuration for an atom of fluorine
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Q: The quantum mechanical model of the atom
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Q: What solutes are electrolytes
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Q: Compared to pure silver a silver alloy called sterling silver is .
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Q: What is the name of the covalent compound N10O4
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Q: 985 grams of ethyl acetate equals how many liters
1 answer
Q: Ask us anythingUse the reaction I2(s) I2(g) H 62.4 kJmol S 0.145 kJ(molK) for question 10. What can be said about the reaction at 500 K
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Q: How many moles of HF are needed to react with 0.220 mol of Na2SiO3
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Q: Enzymes are catalysts. This means that they are able to speed up chemical reactions. Which of the following statements is also true of enzyme catalysts
7 answers
Q: What is significance of an electronegativity difference of 1.7 between 2 atoms
2 answers
Q: Colored chemical compounds that capture light energy are called .
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Q: What is the separation method of sulfur sodium chloride
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Q: Ask us anythingWhich of the following indicates an endothermic reaction
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Q: Write a balanced equation to show the reaction of aqueous aluminum acetate with aqueous ammonium phosphate to form solid aluminum phosphate and aqueous ammonium acetate.
1 answer
Q: . Osmosis is the diffusion of water across a selectively permeable membrane in which water moves from a solution containing a low concentration of solute to what kind of solution
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Q: 10. Hydrogen peroxide is a substance that is produced as a byproduct of many cell processes. However hydrogen peroxide is toxic to cells. In fact if cells are unable to break down hydrogen peroxide th
1 answer
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