03/25/20

please show working

2. The deep blue compound Cu(NH3)4SO4(s) is made by mixing solutions of copper sulfate and ammonia, and evaporating water away: Cu2+(aq) + SO4 2- (aq) + 4NH3(aq) > Cu(NH3)4SO4(s) (a) If you... more
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03/25/20

show working please
If you dissolve 25.0 g of CuSO4(s) in water, then add 25.0 g of NH3(aq), what is the theoretical yield of Cu(NH3)4SO4(s)?
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03/25/20

What is the solubility of calcium chloride at 5 degrees Celsius?

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03/24/20

How do you write the molecular equation and net ionic equation for the reaction of hydroiodic acid and potassium hydroxide?

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03/24/20

How much hydrogen and oxygen atom is in a 133g of water?

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03/24/20

How do you write the net ionic equation for the chemical reaction

write the net reaction of : HClO2(aq)+NaOH(aq) ->H2O(l) +NaClO2(aq)
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03/23/20

How many carbon dioxide (CO2) molecules are produced during the decomposition of 1.25 moles of Carbonic acid (H2CO3)
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03/23/20

How many grams of MgCl2 will be produced from 16.0 g of Mg(OH)2 and 11.0 g of HCL?
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03/23/20

chem homework please help
Suppose that Daniel has a 3.00 L bottle that contains a mixture of O2, N2, and CO2 under a total pressure of 4.90 atm. He knows that the mixture contains 0.270 mol N2 and that the partial pressure... more
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03/23/20

Solid ammonium chloride, NH 4 Cl , is formed by the reaction of gaseous ammonia, NH 3 , and hydrogen chloride, HCl . NH 3 ( g ) + HCl ( g ) ⟶ NH 4 Cl ( s )

A 6.90 g sample of NH 3 gas and a 6.90 g sample of HCl gas are mixed in a 2.00 L flask at 25C. Identify the limiting reagent. NH4Cl orHCl orNH 3How many grams... more
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03/23/20

What is an example of a molecule that utilizes each type: Dipole-dipole force London dispersion force Hydrogen bonding

What is an example of a molecule that utilizes each type:Dipole-dipole forceLondon dispersion forceHydrogen bonding
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03/23/20

How many grams of C3H8 are combust when 18.00mol of 02 are consumed

how many grams of C3H8 are combusted when 18.00mol of O2 are consumed?
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03/23/20

Because the vapor pressure of a solution is lower than the vapor pressure of the pure solvent , it makes salt water (harder or easier...choose one) to boil than pure water
Because the vapor pressure of a solution is lower than the vapor pressure of the pure solvent , it makes salt water (harder or easier...choose one) to boil than pure water
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03/23/20

Vapor Pressuring Lowering (VPL) means the vapor pressure of a solution is (greater/lower) than that of pure solvent (water)
Vapor Pressuring Lowering (VPL) means the vapor pressure of a solution is (greater/lower...choose one) than that of pure solvent (water)
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03/23/20

A sample of gas in a 1.40 L container at 475 kPa, at a temperature of 303K expands to fill a 3.50 L container. What is the new gas pressure if the temperature is now 268 K?
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03/23/20

Chemistry Ksp question
A generic salt, AB3, has a molar mass of 307 g/mol and a solubility of 6.40 g/L at 25 °C.What is the Ksp of this salt at 25 °C?AB3(s)−⇀↽−A3+(aq)+3B−(aq)
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03/23/20

Given Raoult’s Law P= (X1)) P10 Tell what each factor stands for P1 is X1 is P10 is
Given Raoult’s Law P= (X1)) P10 Tell what each factor stands forP1 isX1 isP10 is
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03/23/20

You have 1287.7 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?
You have 1287.7 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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03/22/20

Calculate the pH of a solution that results from mixing 36 mL of 0.11 M benzoic acid with 13 mL of 0.14 M sodium benzoate.
Calculate the pH of a solution that results from mixing 36 mL of 0.11 M benzoic acid with 13 mL of 0.14 M sodium benzoate. The Ka value for C6H5COOH is 6.5 x 10-5.the answer is: 3.85please explain... more
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03/22/20

When 7.5 x 10-4 g of KOH is dissolved in 1.00 L of 1.0 x 10-8 M

When 7.5 x 10-4 g of KOH is dissolved in 1.00 L of 1.0 x 10-8 M Cu(NO3)2, a precipitate of Cu(OH)2 is formed. True or False? (Ksp of Cu(OH)2 is 2.2 x 10-20)The answer is true
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03/21/20

How do you find the average enthalpy using the slope of a graph?

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03/21/20

Chemistry exercise about the different phases:

if a sample has a relatively low density, the phase is like to be (gas or liquid or solid) but probably not (gas or liquid or solid) and (gas or liquid or solid).
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03/21/20

If Luke mixes 20g of NaOH(formula wt. of 40g/mol) with enough water to make 500mL of solution (1L= 1000mL); what is the Molarity (M) of the solution (SW)
If Luke mixes 20g of NaOH(formula wt. of 40g/mol) with enough water to make 500mL of solution (1L= 1000mL); what is the Molarity (M) of the solution (SW)
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03/21/20

If Sue mixes 20g of sugar with 60g of water; what is the wt% sugar of the solution? What is the solute? What is the solvent?
If Sue mixes 20g of sugar with 60g of water; what is the wt% sugar of the solution? What is the solute? What is the solvent?
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03/21/20

chem homework please help!
If a gaseous mixture is made by combining 1.39 g Ar and 2.45 g Kr in an evacuated 2.50 L container at 25.0 ∘C, what are the partial pressures of each gas, PAr and PKr, and what is the total... more
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