Step-by-Step Chemistry Tutorials for Easy Learning

Find the mass percent of CuSO4 in a solution whose density is 1.30 g/mL and whose molarity is 1.36 M.
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14) A sample of He gas (2.35 mol) occupies 57.9 L at 300.0 K and 1.00 atm. The volume of this sample is L at 469 K and 1.00 atm.
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What might happen if a substance that is not a substrate molecule binds to an enzyme's active site? click the correct box.
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how does successive ionisation energy prove that an atom of oxygen has two occupied electron shells?
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An object was weighed in air had a mass of 40. 0 gram. In water, its apparent mass is 35. 0 grams. What is the density in g/cm^3 of the object correct to three significant figures?
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If 23. 0 g of ethylene reacts in excess o2, at constant pressure, calculate the total enthalpy change. show your work for credit
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Calculate the free [ag+] in a solution that contains 0. 620 m agno3and 1. 20 m nh3?(ans. 0. 02)ag2 + nh3 [ag(nh3)2] + kf= 1. 6 107
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Two (2) moles of an ideal gas are in a container at 200 kpa and a temperature of 300 k. The volume occupied by the gas in the container is?
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Material requirements planning _______ generally substitutes out requirements a. recycle. b. resource. c. return. d. reuse.
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Help me out please Classify each by whether they are, or tend to form, cations or anions.
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What mass of sucrose (C12H22O11) should be combined with 537 g of water to make a solution with an osmotic pressure of 8.95 atm at 305 K
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A homonuclear diatomic molecule is found to have a bond order of 2. If there are 10 electrons in bonding orbitals, how many electrons are in antibonding orbitals
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Carbon dioxide has a density of 2.0gl. what mass will a 3.5 l sample of carbon dioxide have?
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The volume and pressure of a gas are 6.50 m3 and 2.10 atm, respectively. (a) If this gas expands to four times its initial volume while the pressure is constant, determine the work done on the gas. J (b) On the other hand, if this gas is compressed to two-thirds its initial volume while the pressure is constant, determine the work done on the gas. J
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what is the ph of a solution made by mixing 592. ml of 0.429 m hio(aq) and 381. ml of 0.567 m naoh? (ka of hio = 2.3 x 10 -11)
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what mass of barium sulfate can be produced when 400.0 ml of a 0.100 m solution of barium chloride is mixed with 400.0 ml of a 0.100 m solution of iron(iii) sulfate?
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which of the organic compounds is the least soluble in water? c6h12o6 , glucose ch3ch2cooh , propanoic acid c5h12 , pentane ch3ch2nh2 , ethyl amine ch3oh , methanol
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how many water molecules are removed during the dehydration synthesis of six triglyceredes molecules? how many bonds are formed?
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the following compound is an example of an amide. draw a good contributing structure of this amide that illustrates the location of the most basic atom. hint: there will be formal charges on the oxygen and nitrogen atoms. if you click on the or symbols, you can then add a charge by clicking on the atom.
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draw the product of the given reaction sequence. the starting material consists of 3 fused rings. one of the rings is a 6 carbon ring where carbon 1 is double bonded to an oxygen and carbon 2 and 3 are shared with an adjacent benzene ring. the adjacent benzene ring is fused to another benzene ring via carbons 4 and 5. this reacts with a 4 carbon chain where carbon 2 is double bonded to oxygen and there is a double bond between carbons 3 and 4. the other conditions are n a o c h 3, methanol and heat.
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An aluminum atom has a mass of and a small airplane has a mass of . Use this information to answer the questions below. Be sure your answers have the correct number of significant digits.
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If a solution of agno3 added to an equilibrium mixture of co(h2o)62 and cocl42- ions would you expect the solution to beomce more pink or blue
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The energy of the atoms of material located in the interior of the material is _______ the energy of the atoms located on the surface of the material.
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10 points item skipped ebookhintprintreferencesitem 1 consider a mixture of several gases of identical masses. will the mass fractions and mole fractions both be identical?
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