04/06/20

Balance these reactions and identify the type.
N2 + H2 ---> NH3C2H6 + O2 ---> CO2 + H2OKClO3 + heat ---> KCl + O2
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04/06/20

Chemistry 60 HW Help
A 14.571 g sample of CaCl2 was added to 12.374 g of K2CO3 and mixed in water. A 3.582 g yield of CaCO3 was obtained.Calculate the percent yield of CaCO3
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04/05/20

Chemistry Homework HELPP
For the following reaction,  5.44 grams of  nitrogen gas are allowed to react with  5.58 grams of  hydrogen gas.nitrogen(g) +  hydrogen(g)   ammonia(g)What is the maximum mass of  ammonia that can... more
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04/05/20

Copper(II) chloride solution

1.9 g of copper (II) chloride reacted how many grams of copper metal will be recovered from the solution? Set up in dimensional analysis
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04/05/20

The effective nuclear charge, Z eff , for a valence electron can be approximated using the core charge of the atom; that is, the total charge of the nucleus and the inner (nonvalence) electrons.
Determine the core charge for an atom of Si
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04/05/20

Identify the number of core and valence electrons for each atom.
Ar:Be:Br:
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04/05/20

Determine the number of valence electrons for each of the atoms. Enter each answer as a numeral. For example, if an atom has two valence electrons, enter the number 2.
B:P:O:Ne:
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04/05/20

Finding Bond Polarity?

Rank the following bonds from least polar to most polar:Ge−FF−FK−FSe−FAs−Fleast polar  ______<  _____ < _____<  ______<  ______  most polar
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04/05/20

Chem homework help urgent
For the following reaction, 32.3 grams of aluminum oxide are allowed to react with 97.5 grams of sulfuric acid .aluminum oxide(s) + sulfuric acid(aq)  aluminum sulfate(aq) + water(l)What is the... more
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04/05/20

The equilibrium constant for the reaction is is 9.1 x 10-6(aq) at 298 K
The equilibrium constant for the reaction is is 9.1 x 10-6(aq) at 298 K when2 Fe3+(aq) + Hg22+(aq) <=> 2 Fe2+(aq) + 2 Hg2+(aq)Calculate ΔG in J when{Fe3+(aq)} = 0.725{Hg22+(aq)} =... more
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04/05/20

Answer this question without using numbers from the book (or anywhere else!) ΔS for the following reaction is positive. True or false?

Answer this question without using numbers from the book (or anywhere else!)ΔS for the following reaction is positive. True or false?CaCO3(s) => CaO(s) + CO2(g)the answer is: trueplease explain... more
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04/05/20

How much energy is required to raise the temperature of 18.6 grams of water from 15°C to 134°C?
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04/05/20

imiting Reagents (Chemistry) Answer a-d + Show Work Please
Given the balanced equation: C3H8 + 5O2 ----> 3CO2 + 4H2Oa) When 45g C3H8 react with 65g O2, how many grams of CO2 can be produced?b) What is the limiting agent?c) How many grams of the excess... more
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04/05/20

12.4g of methane mixed with 30g of oxygen maximum mass of water?
12.4g of methane mixed with 30g of oxygen maximum mass of water?
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04/05/20

How many moles of tin atoms are in a pure tin cup with a mass of 37.6 g ?

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04/04/20

An aqueous potassium iodate

An aqueous potassium iodate (KIO3) solution is made by dissolving 531 grams of KIO3 in sufficient water so that the final volume of the solution is 3.00 L. Calculate the molarity of the KIO3 solution. more
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04/04/20

How many grams of sodium hydroxide are present in 247.0 mL of a 0.400 M NaOH solution?
How many grams of sodium hydroxide are present in 247.0 mL of a 0.400 M NaOH solution?
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04/04/20

How many moles of Cl 2 molecules are required to react with 3.23 mol Al atoms?
How many moles of Cl2 molecules are required to react with 3.23 mol Al atoms?
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04/04/20

Calculate the value of ΔG in kJ at 298 K if the partial pressures of N2, H2 and NH3 are 8.553, 8.881, and 63 atm respectively.
The value of ΔGo for the reaction, N2(g) + 3 H2(g) <=> 2 NH3(g) is -32.90 kJ at 298 K.Calculate the value of ΔG in kJ at 298 K if the partial pressures of N2, H2 and NH3 are 8.553, 8.881, and... more
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04/04/20

Calculate the value of ΔGo in kJ for the reaction at 589 K.
At a certain temperature, 589 K, Kp for the reaction,2 SO2(g) + O2(g) <=> 2 SO3(g) is 4.67 x 1028.Calculate the value of ΔGo in kJ for the reaction at 589 K.The correct answer is -323
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04/04/20

Calculate the value of ln K for the reaction at this temperature to one decimal place.
At 555 K, ΔGo equals 139 kJ for the reaction, Br2(g) <=> 2 Br(g) Calculate the value of ln K for the reaction at this temperature to one decimal place. The answer is -30.1
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04/04/20

Calculate ΔSo at 319 K in J/K.
A particular reaction has a ΔHo value of -193 kJ and ΔGo of -187 kJ at 319 K. Calculate ΔSo at 319 K in J/K.The correct answer is -18.81. I am not sure why I keep getting positive 18.81
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04/04/20

Find ΔG for CaCO3(s) => CaO(s) + CO2 (g)
Given the following data,Ca(s) + CO2(g) + ½ O2(g) => CaCO3(s) ΔGo = -7302 Ca(s) + O2(g) => 2 CaO(s) ΔGo = -1,200Find ΔGo for CaCO3(s) => CaO(s) + CO2 (g)I got the 130 as the answer but the... more
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04/04/20

How many mol of CO2 are produced when 8 mol of H2O are produced?

How many mol of CO2 are produced when 8 mol of H2O are produced?
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04/04/20

what happens to the volume?
what happens to volume of a gas if its pressure is doubled keeping the temperature constant? A. remains sameB. doublesC. halvesD. increases by four timesF. decreases by four times
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