04/23/21

How many grams of Si3N4 can be produced from 0.33 moles of N2?
3 Si + 2N2 → Si3N4 is the balanced equation for the problem
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04/23/21

ASAP 8.0 mL of 0.10 M HC2H3O2 is titrated with 0.10 M NaOH. Perform the following calculations

8.0 mL of 0.10 M HC2H3O2 is titrated with 0.10 M NaOH. Perform the following calculations -pH at the equivalence point-Volume of 0.10 M NaOH needed to reach the half-way point-pH at the half-way point more
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04/23/21

Nitrous oxide (N2O) reacted with oxygen gas to produce dinitrogen tetroxide (N2O4)...
Nitrous oxide (N2O) reacted with oxygen gas to produce dinitrogen tetroxide (N2O4). If the equilibrium concentrations of N2O, O2, and N2O4 are 0.089 M, 0.064 M, and 2.5M, respectively, what is the... more
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04/23/21

What is the value of Kc for the reaction 2A(g) + 3B(g) 2C(g) + D(g) ....
What is the value of Kc for the reaction 2A(g) + 3B(g) 2C(g) + D(g) if at equilibrium [A] = 0.60 M, [B] = 0.30 M, [C] = 0.10 M and [D] = 0.50 M?
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04/23/21

Given the following reactions, predict whether reactants or products predominate.
The acetate ion, Ac-, is a stronger base than water, which is a stronger base than chloride ion, Cl-.Given the following reactions, predict whether reactants or products predominate.HCl(aq) + H2O ⇒... more
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04/23/21

Given the following reaction and its equilibrium constant at a certain temperature...
Given the following reaction and its equilibrium constant at a certain temperature:N2(g) + 3H2(g) ↔ 2NH3(g)         Kc = 2.67Calculate the numerical value of the equilibrium constant for the... more
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04/23/21

You have 1469.9 g of a bleach solution. The percent by mass of the solute sodium hypochlorite, NaOCl, is 3.62%. How many grams of NaOCl are in the solution?
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04/23/21

Answer please ....... Thank you
When Samantha analyzed a compound to find that it contains the following percentages of the elements by mass: barium, 89.56%; oxygen, 10.44 %. a) Assuming 100.0 g of this compound, how many grams... more
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04/23/21

The temperature of a sample of water increases from 20°C to 46.6°C as it absorbs 5650 J of heat. What is the mass of the substance? The specific heat of water is 4.186 J/gºC.

The temperature of a sample of water increases from 20°C to 46.6°C as it absorbs 5650 J of heat. What is the mass of the substance? The specific heat of water is 4.186 J/gºC. Show all work and... more
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04/22/21

Calculate the effusion rate of N2 gas to Cl2 gas?
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04/22/21

Which is the conjugate acid of CO3-2?
HCO3-1 O3-2 H+1 CO2 CO3-2
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04/22/21

For the reaction ? C6H6 + ? O2 → ? CO2 + ? H2O 41.4 grams of C6H6 are allowed to react with 142.5 grams of O2. How much CO2 will be produced by this reaction? Answer in units of grams.
For the reaction ? C6H6 + ? O2 → ? CO2 + ? H2O 41.4 grams of C6H6 are allowed to react with 142.5 grams of O2. How much CO2 will be produced by this reaction? Answer in units of grams.
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04/22/21

When copper metal is added to silver nitrate in solution, silver metal and copper(II) nitrate are produced. What mass of silver is produced from 44 g of Cu? Answer in units of g.
When copper metal is added to silver nitrate in solution, silver metal and copper(II) nitrate are produced. What mass of silver is produced from 44 g of Cu? Answer in units of g.
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04/22/21

Calcium carbonate, also known as chalk, can be produced by reacting .5 M calcium chloride solution and solid sodium carbonate.

Besides calcium carbonate, what is the other product? Write the balanced equation.  What volume of calcium chloride solution will be needed to produce 10 g of chalk? What mass of sodium carbonate... more
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04/21/21

A compound has 40.68% carbon, 5.12% hydrogen, and 54.20% oxygen (by mass). Calculate its empirical formula.
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04/21/21

Balanced equations
1. Write the balanced equation for the reaction of copper (I) oxide and Vinegar.2. Write the balanced equation for the reaction of copper (II) oxide and Vinegar.
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04/21/21

You test the solubility of a solute in three different solvents: water, vegetable oil, and hexane. Your results were: Water: Insoluble Vegetable Oil: Soluble Hexane: Soluble

You conclude that:A. the solute must be some foreign substance from outer space because this is not possibleB. The solvent hexane is polarC. The solute is non-polarD. The solvent hexane must be... more
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04/21/21

Faraday’s Law: Calculate Current or Time
How many seconds are required to deposit 0.152 grams of nickel metal from a solution that contains Ni²+ ions, if a current of 0.586 A is applied._______s
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04/21/21

Electrochemical Cells: Line Notation
Write the cell notation for an electrochemical cell consisting of an anode where Cr2+ (aq) is oxidized to Cr3+ (aq) at a platinum electrode and a cathode where Sn2+ (aq) is reduced to Sn (s) .... more
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04/21/21

Consider the following reaction in a closed system:
H2(g) + I2(g) → 2HI(g)Which of the following will decrease the rate of the reaction?A. add some H2B. remove some HIC. increase the volumeD. increase the temperature
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04/21/21

Effusion question
Determine the rate of a fusion of ammonia and hydrochloric acid
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04/21/21

hey, i really need help with this question

The combustion of liquid quinone (C6H4O2) produces gaseous carbon dioxide and liquid water according to thefollowing equation:  C6H4O2(l) + 6O2(g) → 6CO2(g) + 2H2O(l) When a 2.200 g sample of... more
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04/21/21

please, please answer this chemistry problem

Calculate the mass of NO that can be produced by the reaction of 29.5 g HNO3 according to the following balanced equation.8 HNO3(aq) + 3 Cu(s)  2 NO(g) + 3 Cu(NO3)2(aq) + 4 H2O(l)
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04/21/21

General Chemistry 1
The Ostwald process is used commercially to produce nitric acid, which is, in turn, used in many modern chemical processes. In the first step of the Ostwald process, ammonia is reacted with oxygen... more
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04/21/21

Weigh out 7.3 g of the dried potassium hydrogen phthalate (MW:204.22 g/mol) and prepare 250 ml solution by dissolving in deionized water. Calculate the molar concentration of the

Weigh out 7.3 g of the dried potassium hydrogenphthalate (MW:204.22 g/mol) and prepare 250 mlsolution by dissolving in deionized water. Calculate themolar concentration of the potassium hydrogen... more
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