11/21/19

What would be the chemical reaction and net ionic equation for: Ammonium sulfide + lead II chlorate?
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11/21/19

Write the Chemical equation for the reaction of each weak acid w/ water. Write the corresponding acidity constant expression.

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11/21/19

Find p using this equation PV=nRT
A sample of hydrogen gas, H2, has a volume of 8.5 L at a temperature of 0oC and a pressure of 1.5 atm. Calculate the number of moles present in this gas sample.
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11/21/19

What is the volume of 0.350 moles of an ideal gas at STP?
What is the volume of 0.350 moles of an ideal gas at STP?PV=nRT
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11/21/19

What is the final temperature of the two pieces of metal in degrees C?
A 356.6g piece of gold (Cp=25.42 J/mol C) was heated to a temperature of -23.4 C and then placed in contact with a 1057g piece of uranium at 78.2 C (Cp=27.67 J/mol C) What is the final temperature... more
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11/20/19

True or False: True or False: The products of a chemical reaction are located on the right side of a chemical equation.
True or False: The products of a chemical reaction are located on the right side of a chemical equation.
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11/20/19

Thermochemistry
What is the change in temperature when 3.00 grams of ammonium nitrate is dissolved in 100 mL of water? -2.29  oCGiven the change in the temperature from adding 3.00 grams of ammonium nitrate to... more
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11/20/19

A mixture of leucine, histidine, and aspartic acid is put in an electrophoresis apparatus in a buffer at pH=6.0. ?

Which of the amino acids will travel toward the positive electrode when voltage is applied?A) leucineB) histidineC) aspartic acid
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11/20/19

How many ML of a 0.10 M NaOH solution are needed to neutralize 15 Ml of a 0.20 M H3PO4 solution?
How many ML of a 0.10 M NaOH solution are needed to neutralize 15 ml of a 0.20 M H3PO4 solution?. Step by step please?00
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11/20/19

A sample of gas has a volume of 28.7 mL at 758 torr and 25.0oC. How many moles of gas are in this sample?

A sample of gas has a volume of 28.7 mL at 758 torr and 25.0oC. How many moles of gas are in this sample?
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11/20/19

Stoichometery Problem

how many grams of carbon dioxide would result if we burn 19.2 liters of pure methane measured at 0.813 atm and 26 C?
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11/19/19

How many grams of CO2 could be produced from the combustion of 1.26 g of C2H2 in the presence of 3.39 g of O2?
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11/19/19

what is the balance equation for strontium carbonate and silver hydroxide form silver carbonate and strontium hydroxide
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11/19/19

Need help with this question.
Does valence bond theory agree with the experimentally measured bond angle of 98.2o
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11/19/19

Chemistry Thermodynamics Math Question 8
At 25 C, the partial pressure of CO2(g) in a bottle of soda water is 2.2 bar. Calculate the equilibrium concentration of dissolved carbon dioxide under these conditions. The standard Gibbs free... more
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11/19/19

Chemistry Thermodynamic Math Question 5
Compute the temperature at which calcite is in equilibrium with CaO(s) and CO2(g) at 0.8 bar. SubstanceΔfH0 kJ/molS0 J/mol K CaCO3(s)... more
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11/19/19

Chemistry Thermodynamics Math Question 3
The boiling point of methanol is 64.7 C. Calculate the equilibrium vapor pressure of methanol at 32 C. The enthalpy of vaporization of methanol is 37 kJ/mol. (bar?)
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11/19/19

Chemistry Thermodynamics Math Question 2
What is the value of the equilibrium constant for transformation of carbon from graphite to diamond at 400.0 C? SubstanceΔfH0 kJ/molS0 J/mol K graphite 0.0 5.7 diamond 1.9 2.4
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11/19/19

Chemistry Thermodynamics Math Question

Calculate the change in Gibbs free energy when 50 mg of liquid bromine dissolves in aqueous solution at 41 C. SubstanceΔfH0 kJ/molS0 J/mol K Br2(l) 0.0 152.2 Br2(aq) -2.6 130
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11/19/19

A student mixes 20.00 mL of 0.190 M Ca(NO3)2 and 12.00 mL of 0.150 M Na2CO3. What is the limiting reactant? Show your work.
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11/19/19

How would your results (percent yield) be affected if you spilled some of your reaction mixture while trying to filter your product? Be specific and give an explanation.
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11/19/19

How many liters of 0.4 M sodium hydroxide do you need in order to have 3.0 moles of water? 2NaCl(aq) + 2H20(l) 2Na0H(aq) + Cl2(g)
I don't know what to do
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11/19/19

2 Zn3N2 + 3 O2 ----> 6 ZnO + 2 N2?
Please help me. Select every statement that is true about the equation below. -The N on the left has a 2 next to it because it is diatomic molecule.-The charge on the oxygen on the left is-2.-the... more
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11/19/19

How many grams of metallic Na will be needed to produce 25.43 grams of H2 upon reaction with H2O?
I need help setting up the equation.
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11/19/19

Select every statement that is true concerning the Lewis dot structure for BeC2N2 (a linear molecule with beryllium in the center).?
Question options:There is at least one atom that does not have 8 electrons.There is at least one atom that has more than 8 electrons.There is at least one double bond. (Triple bonds do not count as... more
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