12/10/19

How many molecules of NO can be produced by the reaction of 65.00g of NH3, with 150.0g of O2, according to the balanced equation? 4NH3(g) +5O2(g)=4NO(g)+6H2O(g) ?
I know we have to find the limiting reactant and convert grams to moles but I am not sure how. Step by Step please and how do we get molecules of NO?
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12/10/19

For 12.4g of liquid SoCl2 obtained from the reaction of 6.11g of gaseous So2 and excess gaseous Cl2, calculate the percent yield.

step by step having trouble with percent yield do not seem to get the hang of it.
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12/10/19

Calculate Moles and Volume

Given the following amounts of gasses, calculate the number of moles of each gas. Calculate the volume of each amount of gas would occupy at 100°C and 15atm. a. 5.8g NH₃b. 48g O₂c. 10.8g He
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12/10/19

The reaction for the burning of one type of match tip is as follows: P4S3(s) + 8O2(g) △→ P4O10(g) + 3SO2(g) What volume of SO2 at STP can be produced by burning 1.00 grams of P4S3 in excess O2?
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12/09/19

Frequency and waves

WEGT( Hank-FM) operates at a radio frequency of 99.9MHza) what is the wavelength of this radiation (hint:1MHz= 10^6Hz)b) What is the energy of the radio frequency in the problem above in kJ?
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12/09/19

Draw the Lewis structure

Draw the Lewis structure for SO2 in which all atoms obey the octect rule. Show formal charges. Do not consider ringed structures
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12/09/19

Draw the Lewis structure for this element

Draw the Lewis structure for SO^-2 3, including lone pairs
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12/09/19

Name this formula

What is the name of this ion? Spelling counts. PO^-3 3?
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12/09/19

Glucose C6H12O6 is used as an energy source by the human body. The overall reaction in the body is described by the equation.
C6H12O6 (aq) + 6O2(g) = 6 CO2 (g) + 6H2O (I)calculate the number of grams of oxygen required to convert to 38 g of glucose to CO2 and H2O
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12/09/19

Partial pressure question
A 8.90 L container holds a mixture of 2 gases at 25 degree C. The Partial pressure of gas A and gas B, respectively, are .328 atm and .758 atm. If .180 miles of the 3rd gas is added with no change... more
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12/09/19

N2H4(aq) + O2(g) = N2(g) + 2H2O (I)
If 3.05 g of N2H4 reacts with excess oxygen and produces .750 L of N2 at 295 K and 1 atm, what is the percent yield
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12/09/19

What mass of excess reagent remains when 4.70 g of SrH2 and 3.75 g of H2O react according to the following reaction? The percentage yield is 100%. SrH2(s) + 2 H2O(l) → Sr(OH)2(s) + 2 H2(g)
Molar masses (in g/mol): SrH2=89.64, H2O=18.02, Sr(OH)2=121.64, H2=2.02How would I solve this? And what compound would be the excess reagent? H2O or Sr(OH)2? A) 0.95 g B) 1.86 g C) 6.27 g D) 6.38... more
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12/09/19

2Al(s) + 6HCL (aq) = 2 AlCl3 (aq) + 3H2 (g)

What volume of H2(g) is produced when 8.60 g Al(s) reacts at STP?They want it in L
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12/09/19

Chemistry stoic
How many grams of sulfur trioxide will be made when 18.7 L of oxygen react with excess sulfur.2S + 3O2 → 2SO3 
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12/09/19

Chemistry Word Problem

A student measured the mass of one dose of a store brand antacid tablet to be 0.750 g. The student powdered the tablets and used 0.126 g to neutralize a solution of acid. What percentage of the... more
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12/09/19

Calculating The pH of Solutions
Calculate the pH of each of the following solutions, and label each as acidic, basic, or neutral. Solution1.) [H3O+] = 1.0 × 10-9 M2.) [H3O+] = 0.001 M3.) [H3O+] = 3.7 × 10-6 M
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12/09/19

Volume of Water Vapor Collected ?
You collect 2.6 grams of hydrogen gas over water at a temperature of 75OC and the partial pressure of hydrogen is 1.6 atm. What are the grams of the water vapor and the volume of the... more
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12/09/19

Grams of Water Vapor - College CHEM
Zn  +  HCl  --->  ZnCl2  +  H2(g)If you measured the total volume of collected gas over water at 85oC to be 1752 ml at a total pressure of 1945 torr, how many milliliters of 3.1M HCl... more
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12/09/19

how does temperature affect the speed of the reaction rate between zinc and hydrochloric acid?
how does temperature affect the speed of the reaction rate between zinc and hydrochloric acid? For example, does it even react when it's in cold temperatures or does it react slowly? Does the... more
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12/09/19

If you have 184.1 mL of a 1.045 solution of NaOH, how many mL of a 0.550 M solution of H2SO4 do you need in order to neutralize it?
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12/09/19

Calculate the energy required to ionize a hydrogen atom to an excited state where the electron is initially in the n = 5 energy level. Report your answer in kilojoules. ΔΕ = ?
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12/09/19

What is the energy absorbed or released when 1.0 mole of NO is produced?
2 N2O (g) + O2 (g) ---> 4 NO (G) +82 +90 (kJ/mol)
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12/08/19

If a 0.100 M solution of potassium sulfate has an osmotic pressure of 5.68 atm at 25.0 C, what is the i value for the solution?
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12/08/19

Half-Reaction (Acidic and Basic) - Chemistry
Balance the following chemical reaction by the half reaction method under both acidic and basic conditions. What was oxidized and what was... more
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12/08/19

Chemistry question

(NH4)2SO4(aq)+CuCl2(aq)→Express your answer as a chemical equation. Enter NOREACTION if no reaction occurs. Identify all of the phases in your answer.
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