06/14/21

Outline the process you could use to identify three unlabeled solutions. One solution contains calcium ions, another contains barium ions and third has silver ions present
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06/14/21

chemistry (ice table)
Set the ICE table for the following equation: NH3 + NO → N2 + H2O (first balance the equation) If we add 4 mol of NH3 in a 4 L container, find the concentration of N2 in equilibrium state.
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06/14/21

A sample of a compound was found to contain 8.00 g of carbon, 1.344 g of hydrogen and 10.66 g of oxygen. Determine the empirical formula
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06/14/21

aluminum foil measurements
I have a foil with a mass of 1.235 g. the length is 6 7/8 and the width is 6 1/8. I need help in calculating the volume and thickness of the foil
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06/13/21

Assuming equal concentration arrange these solution by pH
CaBr2Alcl3Mg(CIO)2HCILiOH
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06/12/21

my homework is due in a few hours and I am confused. Please... help... quickly!
Sodium chlorate decomposes into sodium chloride and oxygen gas as seen in the equation below.   ­­2NaClO3­ --> 2NaCl +3O2  How many grams of NaClO3­ were needed to produce 6 grams of O2? Round... more
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06/12/21

A steel cylinder has a volume of 246 cm3 and a density of 7.93 g/cm3. What is its mass in kilograms?
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06/12/21

Hello. My chemistry homework is due in 1 hour. I continue to get this question wrong time and time again. Please help me as soon as possible please!!
Question 1: 2 NH3 + 3 CuO g 3 Cu + N2 + 3 H2OIn the above equation how many grams of N2 can be made when 158 grams of CuO are consumed?Round your answer to the nearest tenth. If you answer is a... more
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06/11/21

Reaction; Rate Constant
For the following second order reaction, the half-life is 14.7 and the [A]0 = 9.55. Calculate the rate constant.2 A → 3 BWhat is the rate constant and the formula used?
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06/11/21

Reaction; Rate Constant
For the following first order reaction, the rate constant is 0.0118. If [A]0 = 6.12, calculate [A] at 2.32 seconds.2 A → 3 B
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06/11/21

Reaction; Half-Life
For the following zero order reaction, the rate constant is 0.853 M/s and the [A]0 = 4.54 M. Calculate the half-life.2 A → 3 BWhat is the half-life and the formula used?
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06/11/21

Daltons and grahams law
2.Blast furnaces give off many unpleasant and unhealthy gases. If the total air pressure is 0.99 atm, the partial pressure of carbon dioxide is 0.05 atm, and the partial pressure of hydrogen... more
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06/11/21

Mass of CaCl2: 10,0 g Mass of Na2CO3: 10.0 g Actual amount collected: 2.00 g CaCO3 1. Write a balanced chemical equation.

A student performs a lab at school. They massed out both reactants and then mixed them together. The reaction produced a precipitate. They filtered out the product and took the mass of it. (I'm a... more
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06/11/21

Dalton and Grahams law
4. A container of gas has a combination of gases. Gas 1 has a pressure of        98.6 mmHg, Gas 2 10.3 mmHg, Gas 3 207 mmHg, and Gas 4 56.7 mmHg.        What is the total pressure of the gas in the... more
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06/11/21

Calculating Molecular formulas
1. A compound of iron and iodine has an empirical formula of FeI3. Its molecular mass is 436.5 g/mol. Determine its molecular formula.
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06/11/21

Determine the mass in grams of 2.11 × 10²¹ atoms of arsenic. (The mass of one mole of arsenic is 74.92 g.)
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06/11/21

When the temperature of the cylinder changes from 150K to 300K the pressure inside the cylinder doubles
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06/10/21

Chemistry Unit 7 and 8
Find the equilibrium constant, Kc, for the equation from the last problem: C12H26 (g) + O2 (g) ⇌ H2O (g) + CO2 (g)>[C12H26] = 1.8 x 103 M>[O2] = 8.6 x 103 M>[H2O] = 1.1 x 103 M>[CO2] =... more
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06/10/21

C2H5OH(aq) + 3O2(g) ---> 2CO2(g) + 3H2O(l) If 735 g of water is produced in this reaction, what mass of ethanol was initially reacted?
C2H5OH(aq) + 3O2(g) ---> 2CO2(g) + 3H2O(l) If 735 g of water is produced in this reaction, what mass of ethanol was initially reacted?
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06/10/21

2Fe + 3Br2 --> 2FeBr3 How many grams of FeBr3 will be produced if 67.0 grams of Br2 react?
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06/10/21

Mg + 2HCl --> MgCl2 + H2 How many grams of H2 are produced when 22.8 grams of Mg react?
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06/10/21

C3H8 + 5O2 --> 3CO2 + 4H2O How many moles of O2 are needed to react with 206 moles of C3H8 combust?
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06/10/21

2 C2H6 + 7O2 = 4 CO2 + 6 H2O If 0.31 moles of H 2 O were produced, how many moles of carbon dioxide would also have been produced?
Grateful for any help given!
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06/10/21

chemistry question
CaCl2 + Na2C2O4 ⇒ CaC2O4 + NaCla. Write a balance equation.b. Find the molar mass for CaCl2.c. Find the molar mass of CaC2O4.d. How many grams of CaC2O4 is produced from 30.0 g of CaCl2.Please show... more
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06/09/21

2 NABr + Ca(OH)2 = CaBr2 + 2 NaOH How many moles of CaB 2 are produced, if 14.72 moles of NaBr and excess Ca(OH) 2 react?
Grateful for any help given!
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