10/28/21

Limiting Stoichiometry with showing steps
4.35 L of Butane (C4H10) is combusted with 26.50 L of Oxygen gas. What volume of each product is formed by this reaction? What volume of excess reactant remains?
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10/27/21

Can someone please help me with these problems and see if I got them correct?
For the reaction BaSO3 (s) ↔ BaO (s) + SO2 (g), the equilibrium constant is 0.345 M. What is the concentration of SO2 at equilibrium?A. 0.035 MB. 0.070 MC. 0.280 MD. 0.345 ME. 0.520 MFor the... more
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10/27/21

a 1.295g sample of a hydrocarbon is burned in an excess of oxygen producing 3.553g of co2 and water .what mass of hydrogen is contained in the original sample
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10/27/21

Finding amount yielded in equations

Find the mass of AlCl3 produced when 10.0g Al2O3 react with 10.0g HCl. Al2O3 + 6HCl > 2AlCl3 + 3H2Oshow each step
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10/27/21

Help I dont understand Stiochiometry

Using the following equation how many grams of pure oxygen do you need to consume 879 g of glucose: C6H12O6 + 6O2 → 6CO2 + 6H2O + energy
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10/27/21

Equation for the graph of the ideal gas law
How do you answer this question?For a plot of V vs. number of moles (n), where V is on the y-axis and n is on the x-axis, write an expression for the slope in terms of pressure, temperature and R.
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10/27/21

Calculate the standard enthalpy change
Calculate the standard enthalpy change for the reaction at 25 degrees C.2CH3OH(g)+3O2(g)⟶2CO2(g)+4H2O(g) Δ𝐻∘rxn= ?KJ
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10/27/21

Using the Bohr model, determine the lowest possible energy, in joules, for the electron in the Li2+ ion.
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10/26/21

Titration Question
Titration question An 0.0151 L acidic solution of potassium dichromate is titrated with a solution of 0.125 mol/L iron (II) chloride. The concentration of potassium dichromate according to the... more
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10/26/21

When a sample of 100ML of 0.0580M stannous fluoride is mixed with 25mL of .100M Na3(PO4)2, .555g precipitate of stannous carbonate is obtained. Calculate the theoretical and percent yield of Sn3(PO4)2
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10/26/21

Find the molarity of this solution.
In 20.0 degree Celsius, a 0.258 m aqueous solution of C6H12O6 (glucose) has a density of 1.017 g/mL. Find the molarity of this solution.
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10/26/21

Classify the following chemical reactions as endothermic or exothermic.
PCl3 (s) + Cl2 (g) → PCl5 (s) + energy2KNO3 (s) + energy → 2KNO2 (s) + O2 (g) NH4NO2 + energy → N2 (g) + 2H2O (g)2H2 (g) + O2 (g) → 2H2O (l) + energya.exothermic b.endothermic
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10/26/21

Limiting STOICH - Please show work, chem is hard.
What mass of Aluminum oxide is formed when 13.0g of Aluminum is burned in 21.0g of Oxygen gas? ?
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10/26/21

Mass-Mass Relationships.
-If sulfuric acid (H2SO4) reacts with 29 grams of sodium chloride (NaCl), how many grams of hydrochloric acid (HCl) are produced? H2SO4 + NaCl ----> HCl + Na2SO4-In the same reaction, how much... more
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10/26/21

Consider the reaction represented by the unbalanced equation: NH3 + O2 → NO + H2O. For every 259 molecules of ammonia that reacts, _____ molecules of oxygen are required.
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10/26/21

Chem 101 ideal gas
A hot air balloon is filled with 1.43 x106 of an ideal gas on a cool morning ( 11C)The air is heated to 131C  What is the volume of the air in the balloon after it is heated? Assume that none of... more
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10/25/21

Help me answer this problem!!!
The pressure of 4.85 L of an ideal gas in a flexible container is decreased to one-third of its original pressure, and its absolute temperature is decreased by one-half. What is the final volume of... more
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10/25/21

AP chem question
A solution of 100.0 mL of 0.200 M KOH mixed with a solution of 200.0 ml of 0.150M NiSo4.a) Write the balanced chemical equation for the reaction that occursb) What precipitate forms?c) What is the... more
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10/25/21

What kind of chemical reaction is 3 CuCl2●2H2O(aq) + 2 Al(s) -----> 3 Cu(s) + 2AlCl3(aq) + 6 H2O(l)
And how do you know this?
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10/24/21

What NaCl concentration results when 304 mL of a 0.610 M NaCl solution is mixed with 562 mL of a 0.340 M NaCl solution?
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10/24/21

An aqueous solution containing

An aqueous solution containing 7.40 g of lead(II) nitrate is added to an aqueous solution containing 5.94 g of potassium chloride.Enter the balanced chemical equation for this reaction. Be sure to... more
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10/24/21

Consider the reaction. 2Pb(s)+O2(g)⟶2PbO(s) An excess of oxygen reacts with 451.4 g of lead, forming 339.4 g of lead(II) oxide. Calculate the percent yield of the reaction.
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10/24/21

Need help solving these problems

When (8.140x10^2) J of heat is added to a liquid sample that is initially at 25.0 degrees Celsius, the temperature rises to (2.80x10^1) degrees Celsius. What is the volume of the sample in... more
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10/24/21

Octatomic sulfur (S8) reacts with bromine (Br2) to produce sulfur hexabromide (SBr6). If 8.25 moles Br2, and plenty of S8 were used, what would be the theoretical yield (in moles) of SBr6?
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10/24/21

CaI2+2AgNO3⟶2AgI+Ca(NO3)2 CaI 2 + 2 ⁢ AgNO 3 ⟶ 2 AgI + Ca ( NO 3 ) 2 what mass of silver iodide is produced from 5.31 mol of calcium iodide?
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