06/11/21

DUE TODAY PLZ HELP!!!
During an experiment, ice and water were placed in a perfectly insulated thermos flask at 0 °C. Describe this system when it phase reaches equilibrium
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06/11/21

Calculating molecular formulas
1. Analysis of a compound reveals 64.9% carbon, 13.5% hydrogen, and 21.6% oxygen. If it’s molecular mass is 148.0 g/mol, compute its molecular      formula.  2. Data from a lab yields these... more
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06/10/21

Le Chatelier's Principle; Pressure
Given the following reaction:3 H2(g) + N2(g) <--> 2NH3(g)If the pressure of the reaction is decreased, the reaction will shift to the ___ to restore equilibrium.A. LeftB. Right
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06/10/21

Le Chatelier's Principle; Volume

Given the following reaction:3 H2(g) + N2(g) <--> 2NH3(g)If the volume of the reaction is decreased, the reaction will shift to the ___ to restore equilibrium. A. RightB. Left
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06/10/21

Le Chatelier's Principle; Temperature
Given the following reaction:Hb(CO)4(aq) + 4 O2(g) <--> Hb(O2)4 (aq) + 4 CO(g)                ΔH= -123.5 kJIf the temperature of the reaction is increased, the reaction will shift to the ___... more
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06/09/21

2 NABr + Ca(OH)2 = CaBr2 + 2 NaOH What was the initial mass of calcium hydroxide for a reaction that produced 52.9 g of NaOH?
Grateful for any help given!
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06/09/21

How many grams of the excess reactant are left after the reaction is complete?
The reaction of Cr2O3 with silicon metal at high temperatures will make chromium metal.2Cr2​O3​(s)+3Si(s)4Cr(l)+3SiO2​(s) The reaction is begun with 137.00 g of Si and 125.00 g of Cr2O3.
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06/09/21

A sample of neon gas occupies a volume of 461 mL atSTP. What is the volume of the neon gas when thepressure is reduced to 0.76 atm?
please show work !!!!!!!!!!!!!!!!!!
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06/09/21

A 7.25-L container holds a mixture of two gases at 37 °C. The partial pressures of gas A and gas B, respectively, are 0.352 atm and 0.810 atm.

If 0.220 mol of a third gas is added with no change in volume or temperature, what will the total pressure become?it says answer should be P total=___ atmI keep getting 1.93 and it says its wrong
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06/08/21

How many compounds are there in 600.0g of PbSO4? Please Explain.
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06/08/21

5. Consider the dissociation of acetic acid in water at equilibrium
you start with .05 moles of acetic acid in 500 mL of water. At equilibrium, the pH of the solution is 2.873. What is the equilibrium constant of this reaction?
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06/08/21

If one salt lowers melting point farther than another, hypothesize why this is happening, thinking about the molecular difference between NaCl and CaCl2.
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06/07/21

Stoichiometry Problem
What is the limiting reagent when 135 g of Nitrogen reacts with 53.1g of hydrogen in the production of Ammonia? What is the maximum amount (in grams) of Ammonia that can be... more
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06/07/21

Percent Yield Problem
For the balanced equation shown below, if the reaction of 37.5 grams of C2H5NSCl produces 10.07 grams of SO2,         what is the percent... more
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06/06/21

Balance HO2––––> O2 (basic)

This question is messing me up!
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06/06/21

How much heat is released?
How much heat is released when 75.0 g of steam at 100.0°C is cooled to ice at -15.0°C? The enthalpy of vaporization of water is 40.67 kJ/mol, the enthalpy of fusion for water is 6.01 kJ/mol, the... more
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06/05/21

How to name a fatty acid according to their degree of unsaturation and delta nomenclature?
can someone give me an example... im so confusedlike in the case of lauric and linoleic acid. hoping someone can help me
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06/04/21

Chemistry questions

Carbon-14 has a half-life of 5715 years. If a sample of carbon-14 has and original mass of 12 g, what will be the amount remaining at the end of 10,788 years? Write out your equations and type out... more
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06/04/21

atoms to grams of calcium
How many atoms of calcium are in 3456 grams of calcium? a) 5.19e25b) 2.30e-19c) 8.34e28d) 1.43e-22
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06/04/21

Hi, someone please help me with this and how am i gonna know if it's acidic or basic?
Calculate thehydrogen ionconcentration of asolution with a pOHreading of 7.8
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06/04/21

general chem ch.6
A 2.50 g sample of powdered zinc is added to 100.0 mL of a 2.00 M aqueous solution of hydrobromic acid in a calorimeter. The total heat capacity of the calorimeter and solution is 448 J/K. The... more
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06/04/21

general chem chapter 6
A 3.921 sample of a new organic material is combusted in a bomb calorimeter. The temperature of the calorimeter and its contents increase from 24.89 degrees c  to 28.74 degrees cThe heat capacity... more
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06/04/21

Answer the question.

Why is the radius of ions of halogen elementa larger than the radijus of atoms?
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06/04/21

science problem
How many grams of excess reactant is left over when 60 grams of NaCl reacts with 55 grams of Pb(NO3)2?A) 40 g B) 60 g C) 50 g D) 30 g
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06/04/21

CHEMISRY problem I really need help :)

Which of the following will not conduct electricity when dissolved in water: NaCl, NaOH, HCl, C6H12O6A) C6H12O6B) NaCIC) NaOHD) HCI
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