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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: How much is 20 grams of sodium.
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Q: Byproduct of mining iron
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Q: How do you make a 10uM solution of H3BO3
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Q: Bonds between particles are weak in
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Q: Ca plus Br and gt CaBr2 what is the reducing agent
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Q: Is a muesli a pure substance or a mixture
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Q: Does calcium become a cation by gaining two electrons
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Q: Why use iodine on onion slide
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Q: What occurs when molecules are distributed evenly through a solid liquid or a gas
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Q: Is ch3ch2oh an acid or base
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Q: Is ethanol an acid or base
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Q: Is acetate fabric safe
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Q: How do you clean utc jewelry
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Q: Is Lil an ionic compound
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Q: During which of the 5 Cs should you establish an entry control point
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Q: How many atoms are in mg (C2H3O2)2
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Q: Mentos acid or base
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Q: How does the foetus get oxygen from its mother
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Q: Generally absorption from the lungs is greater than from the mouth why
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Q: Why electrons are removed first from 5d than 4f orbital in lanthanides
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Q: What do you a property of matter that retains its identity after a reaction
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Q: Write an equation that shows the formation of a sodium ion from a neutral sodium atom.
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Q: What exactly does it mean to say a substance is malleable
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Q: Exemple of substance that is malleable
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Q: What happens to the entropy in the reaction l2(s) l2(g)
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Q: The electron dot diagram for a neutral atom of chlorine (atomic number 17) is shown below. Which of the following symbols represents a chlorine ion with a stable arrangement of eight valence electrons
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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
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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
1 answer
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.
2 answers
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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