06/05/21

Chemistry Class
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] = 1.1 x 103 M
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06/03/21

Hello. Please help me it’s down to the wire and I need immediate help with chemistry homework as soon as possible please

S   + 6 HNO3 --> H2SO4 + 6 NO2 + 2 H2OIn the above equation how many moles of water can be made when 110.4 grams of HNO3 are consumed?Round your answer to the nearest tenth. If you answer is a... more
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06/03/21

A specific compound has a molar mass of 14 G/MOL if I have 84G of this compound how many moles of this compound is that
A specific compound has a molar mass of 14 G/MOL if I have 84G of this compound how many moles of this compound is that
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06/03/21

chemistry question 3
An aqueous solution has [H3O+]=1.5x10^-12 Ma)determine [OH-] in Mb)determine the pHc)explain if it is acidic, basic or neutralplease show work to help me :)
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06/03/21

I need this ASAP
The reaction being observed is:HCl + NH3 --> NH4ClIf the Backyard Scientist added 5.9 grams of hydrochloric acid to excess ammonia and recovered 6.5 grams of NH4Cl, what was is the theoretical... more
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06/03/21

HOW TO FIND EQUILIBRIUM KC AND KP
2.     Consider the following heterogeneous equilibrium.        CaCO3 (s)                  CaO (s) + CO2 (g)                  At 800  the pressure of CO2 in 0.23 atm, calculate (a) Kp... more
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06/03/21

In a solution with a [OH] of 1.5 x 10-4 M, what is the [H3O+]?
Hi, I've been stuck on this question for a bit. Help would be greatly appreciated!
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06/03/21

Hi can someone please help me with this. Thank you!!
calculate the concentration of the hydrogen ion/hydroxide ion inthe samples below by its pOH level. Identify if the solution is acidic, basic, or neutral.1. Calculate the hydroxideion concentration... more
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06/03/21

4AlCl3 + 3O2 → 2Al2O3 + 6Cl2 How many moles of Cl2 are needed to make 75.5 grams of O2?
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06/03/21

If you measure 610.39 grams of CaCl2, how many moles do you have?
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06/03/21

Outline the process you could use to identify three unlabeled solutions. One solution contains potassium ions another contains copper (I) ions, and the third has calcium ions present
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06/03/21

general chemistry chapter 5
What NaCl concentration results when 249ml of a 0.740m NaCl solution is mixed with 427 ml of a 0.380m NaCl solution?
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05/28/21

determine the empirical formula of an imaginary hydrate.

A student wishes to determine the empirical formula of an imaginary hydrate. The following data is obtained- mass of empty crucible - 23.567g mass of crucible with hydrate before heating-... more
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05/28/21

please help me with this honors chemistry problem about solutions
Which aqueous solution of the following substances does not conduct an electric current?A. potassium hydroxideB. hydrogen bromide   C.  cesium iodideD. glucose, C6H12O6
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05/28/21

please answer this solutions problem in honors chemistry

In some cases, the force of the attraction between the ions is so strong that it cannot be overcome by the interaction of the ions with the water molecules.A. trueB. false   
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05/28/21

Chemistry pH calculations
What is the pH of a solution with a [H+] of 2.3 x 10^-8M?
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05/28/21

3.67 g of Na react with 8.00 g of H2o write the formula for the reactant that is limiting reactant. how many grams of h2 are formed? how much of the excess reactant in grams remains after the reaction
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05/27/21

Given the balanced equation: 16 HCl + 2 KMnO4 --> KCl + 2MnCl2 + 5Cl2 + 8 H20 If 4 moles of KMnO4 reacts, how many moles of H20 are produced?
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05/25/21

What is something that undergoes a reaction with a negative (∆H) enthalpy. Include a graph that representing this negative enthalpy (∆H) change.
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05/25/21

Highschool Chemistry Question
How many milliliters of 0.108 M KOH must be used neutralize completely 20.0 mL of 0.142 M H3PO4 (aq) solution? 1 H3PO4 (aq) + 3 KOH (aq) → 3 H2O (l) + 1 K3PO4 (aq)
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05/10/21

You are planning an experiment that requires 0.137 mol of nitrogen monoxide gas (NO). What volume would you need at STP? Answer in units of L.
You are planning an experiment that requires 0.137 mol of nitrogen monoxide gas (NO). What volume would you need at STP? Answer in units of L.
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05/08/21

If there are 7.6 x 1011 mg of sulfur dioxide gas at STP, how many milliliters does this occupy? Give your answer in scientific notation
Need help with his problem.
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05/08/21

How many grams of lithium carbonate are produced from 0.51 moles of lithium phosphate and excess iron(II) carbonate? 3 FeCO3 + 2 Li3PO4 --> 3 Li2CO3 + Fe3(PO4)2
Don't know how to do this.
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05/07/21

determine the molecular mass of a compound that contains 42.87% carbon, 3.598% hydrogen, 28.55% oxygen and 25.00% hydrogen if the molar mass is 168 g/mol
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05/07/21

which of the following gives the relative size of Ka and pH of a 0.10 M solution of HEX3(aq)?
HEX3(aq) + H2O(l) ⇌ H3O+(aq) + EX3−(aq)∆Go = +47 kJ/molrxnThe reaction between the acid HEX3(aq) and water is shown above. Based on the chemical equation and the value of ∆Go given above, which of... more
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