J.R. S.

05/20/21

Calculate the molecular formula of a compound whose molar mass is 60.0 g/mol & empirical formula is CH4N. (SHOW WORK)

Calculate the molecular formula of a compound whose molar mass is 60.0 g/mol & the empirical formula is CH4N. (SHOW WORK)

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Chemistry

05/20/21

Which of the equations demonstrate a weak acid?

Which of the equations demonstrate a weak acid?H2SO4 + H2O --> H3O+ + HSO4- --> H3O+ + SO4-2HBr + H2O --> H3O+ + Br- HC2H3O2 + H2O --> C2H3O2 + H3O+HI + H2O --> H3O+ + I-

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Chemistry

05/20/21

When carbonic acid and sodium hydroxide react in the correct combination, a neutralization reaction occurs. Which of the following is this balanced reaction?

When carbonic acid and sodium hydroxide react in the correct combination, a neutralization reaction occurs. Which of the following is this balanced reaction?H2CO3 + NaOH --> Na2CO3 + H2OHCO3- +... more

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Chemistry

05/20/21

What is the difference between a solution with a pH of 13 and a solution with a pH of 4?

What is the difference between a solution with a pH of 13 and a solution with a pH of 4?9 times more basic1 x 1010 times more basic1 x 109 times more basic10 times more basic

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Chemistry

05/20/21

Explain why the third ionization energy is much higher than the second ionization energy for an atom of magnesium.

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Science Biology Chemistry

05/20/21

chemistry question I would really love if someone can help me

2. How many grams of sodium nitrate can be produced with 60 grams of sodium chloride and 55 grams of lead IV nitrate? Which reactant is limiting? How many grams of the excess reactant will be... more

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Chemistry

05/20/21

what subatomic particle is associted with the number that uniquely identifies an element? Why can the other subatomic particles not serve this purpose?

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Chemistry

05/20/21

Keq, Equilibrium Calculations and Given Initial Conditions

0.00400 mol/L of NO and 0.00300 mol/L of O2 are reacted together: 2 NO(g) + O2(g) --> 2 NO2(g) Initially, there is no NO2 in the flask. At equilibrium, it is determined that [NO2] = 0.00350... more

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Chemistry

05/19/21

What is the frequency of a wave that is 4.21 x 10-7 m? c=𝜆𝜈

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Chemistry

05/19/21

How do you calculate average current?

0.149grams of Gold (Au) is deposited after the voltaic cell ran for twenty minutes. What is the average current that passed through?

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Chemistry

05/19/21

PCI5(g) <-> PCI3(g) + Cl2(g). At equilibrium, [PCl5] = 1 M and [Cl2] = 3.16x10^-2 M. What is the equilibrium concentration of PCl3? Use Keq=1x10^-3

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Chemistry

05/19/21

Chemistry Molarity

10.0g of Cr(NO3)3 in 325 ml of solution

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Chemistry Organic Chemistry

05/19/21

Use the following information to determine the enthalpy for the reaction shown below.

CO2(g) + 2SO2(g) --> CS2(l) + 3O2(g) ΔHo = ?C(graphite) + O2(g) --> CO2(g) ΔHo = −393.5 kJS(s) + O2(g) --> SO2(g) ΔHo = −296.8 kJC(graphite) + 2S(s)... more

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Chemistry Biochemistry Organic Chemistry

05/19/21

Consider the following reaction for the questions below: Ca + Br2 --> CaBr2

a. What type of reaction(s) is/are being represented by the chemical reaction above?b. Is this reaction an oxidation-reduction (redox) reaction?c. If this is a redox reaction, then identify the... more

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Chemistry Biochemistry Organic Chemistry

05/18/21

Assume that Silver Nitrate and Calcium Bromide are the starting substances (reactants) in the reaction.

a. Write a balanced chemical reaction betweenSilver Nitrate and Calcium Bromide. Be sure to include physical states.b. State the names of the products that are produced from this reaction.c. Write... more

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Chemistry

05/18/21

In a titration 0.452L of 0.95M barium hydroxide is used to neutralize 15.5mL of sulfuric acid. What is the concentration of sulfuric acid?

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Chemistry

05/18/21

A gas mixture being used to simulate the atmosphere of another planet consists of 305 mg of methane, 186 mg of argon, and 267 mg of nitrogen.

The partial pressure of nitrogen at 292 K is 7 kPa. Calculate the total pressure of the mixture. Calculate the volume.

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Chemistry

05/18/21

J.R. i think i missed out something

2 AB (g) + B2 (g) → 2AB2 (g); H° = +492.0 kJ/mol, S° = +236.9 J/KmolUse the data in the table below to calculate the value of the standard molar entropy S°, for B2 (g) at 25°C.Substance: AB (g)... more

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Science Biology Chemistry

05/18/21

This would be a huge help

1. What is the greatest amount of magnesium oxide in moles that can be made with 6.3 mol Mg and 6.9 mol O2? Which reactant is limiting? How many moles of the excess reactant will be left after... more

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Chemistry

05/18/21

Solve this task.

From 100g of limestone, 40 g of carbon dioxide were obtained. What is the estimated calcium carbonate in limestone?

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Chemistry

05/18/21

J.R. is this correct?

Calculate the value of the standard molar entropy S°, for B2 (g) at 25°CSubstance: AB (g) Standard Molar Entropy, S° (J/Kmol): 217.9substance: AB2 (g) Standard Molar Entropy, S° (J/Kmol): 238.1is... more

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Chemistry

05/18/21

How many moles of black iron oxide Fe3O4 can be produced from 9.2 moles of water and 3.4 moles of iron?Which is the limiting reactant and how many mol of the excess reactant wil be left afte the react

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Answers •1

Chemistry

05/18/21

What is the greatest amount of magnesium oxide in moles that can be made with 6.3 mol Mg and 6.9 mol O2? Which reactant is limiting?How many moles of the excess reactant will be left afte the reaction

Follows • 2

Answers •1

Chemistry

05/18/21

HSO4- + H2O. What arises?

Denote acids and their conjugate bases.

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Science Chemistry Biochemistry

05/18/21

practice #3 questions

1. What is the greatest amount of copper IV nitrate in moles that can be made with 24.3 mol copper II chloride and 20.9 mol sodium nitrate? Which reactant is limiting? How many... more

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Answers •1

Calculate the molecular formula of a compound whose molar mass is 60.0 g/mol & empirical formula is CH4N. (SHOW WORK)

Which of the equations demonstrate a weak acid?

When carbonic acid and sodium hydroxide react in the correct combination, a neutralization reaction occurs. Which of the following is this balanced reaction?

What is the difference between a solution with a pH of 13 and a solution with a pH of 4?

Explain why the third ionization energy is much higher than the second ionization energy for an atom of magnesium.

chemistry question I would really love if someone can help me

what subatomic particle is associted with the number that uniquely identifies an element? Why can the other subatomic particles not serve this purpose?

Keq, Equilibrium Calculations and Given Initial Conditions

What is the frequency of a wave that is 4.21 x 10-7 m? c=𝜆𝜈

How do you calculate average current?

PCI5(g) <-> PCI3(g) + Cl2(g). At equilibrium, [PCl5] = 1 M and [Cl2] = 3.16x10^-2 M. What is the equilibrium concentration of PCl3? Use Keq=1x10^-3

Chemistry Molarity

Use the following information to determine the enthalpy for the reaction shown below.

Consider the following reaction for the questions below: Ca + Br2 --> CaBr2

Assume that Silver Nitrate and Calcium Bromide are the starting substances (reactants) in the reaction.

In a titration 0.452L of 0.95M barium hydroxide is used to neutralize 15.5mL of sulfuric acid. What is the concentration of sulfuric acid?

A gas mixture being used to simulate the atmosphere of another planet consists of 305 mg of methane, 186 mg of argon, and 267 mg of nitrogen.

J.R. i think i missed out something

This would be a huge help

Solve this task.

J.R. is this correct?

How many moles of black iron oxide Fe3O4 can be produced from 9.2 moles of water and 3.4 moles of iron?Which is the limiting reactant and how many mol of the excess reactant wil be left afte the react

What is the greatest amount of magnesium oxide in moles that can be made with 6.3 mol Mg and 6.9 mol O2? Which reactant is limiting?How many moles of the excess reactant will be left afte the reaction

HSO4- + H2O. What arises?

practice #3 questions

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