03/11/19

Having a hard time with this one

Solid magnesium carbonate decomposes into soild magnesium oxide and carbon dioxide gasBalanced equation, type of reaction, and state of matter
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03/11/19

Having a hard time. Balanced equation for reaction help

1) Aqueous solution of calcium chloride and sodium phosphate react to form solid calcium phosphate and aqueous sodium chlorideBalanced equation, type of reaction, and state of matter2) Soild iron... more
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03/11/19

Equilibrium Equation
Assume that the reaction for the formation of gaseous hydrogen fluoride from hydrogen and fluorine has an equilibrium constant of 1.15E2 at a certain temperature. In a particular experiment, 2.500... more
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03/11/19

Equilibrium Question
Of the following equilibria, which one will shift to the left in response to a decrease in volume?Question 4 options: H2(g) + Cl2(g)  2HCl(g) 2SO3(g)  2SO2(g) + O2(g) CO2(g) +... more
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03/11/19

Equilibrum expressions
PCl5(g)  PCl3(g) + Cl2(g)a.) write the equillibrium expression.b and c.) At a certain temperature, a 1.00 L flask initially contained 0.298 mole of PCl3 and 8.70E-3 mole of PCl5. After the system... more
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03/11/19

Balanced equation for reaction question

Balance and write the equation for Heating copper (II) sulfate pentahydrate
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03/11/19

Balanced equation for reaction help

Balance and write the equation for Burning calcium And also Heating calcium carbonate
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03/11/19

Balanced equation for reaction

Balance and write out the equation for Lead (II) nitrate and potassium iodide
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03/11/19

Butanone + ethanol

What is the product of butan-2-one + ethanol the product of the reaction above reacts with ethanol to give what products?
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03/08/19

What is the energy change when the temperature of 14.2 grams of solid titanium is decreased from 37.9 °C to 21.7 °C ?
Answer must be in Joules.
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03/08/19

How much energy is required to raise the temperature of 10.5 grams of solid iron from 20.3 °C to 38.9 °C ?
Answer must be in Joules.
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03/08/19

2.00mol of the weak base methylamine, NH2CH3, is added to water to make up 1.500L of solution. The Kb of hydroxylamine is 4.4×10−4. What is the pH of the solution?
2.00mol of the weak base methylamine, NH2CH3, is added to water to make up 1.500L of solution. The Kb of hydroxylamine is 4.4×10−4. What is the pH of the solution?
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03/05/19

What does this question mean:

Identify each of the following terms as being associated with either a “bond” or a “molecule.” a) Polar covalent b) Nonpolar covalent c) Polard) Nonpolar
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03/05/19

What is the minimum volume of 0.20 M lead(II) nitrate solution required to react with all of the iodide ion in 16.6 grams of potassium iodide dissolved in a solution?
A) 1.0 LB) 0.75 LC) 0.10 LD) 0.50 LE) 0.25 LPlease explain and show work!!
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03/04/19

Electron and molecular geometries

Electron geometry of CH2O? Molecular geometry of CH2O?
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03/04/19

Electron and molecular geometries

Electron geometry of H2S?Molecular geometry of H2S?Electron geometry of CHCl3?Molecular geometry of CHCl3?
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03/04/19

A volume of 40.0 mL of a 0.860 M HNO3 solution is titrated with 0.570 M KOH. Calculate the volume of KOH required to reach the equivalence point.
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03/04/19

Determine how many grams of N2 are produced from the reaction of 8.60 g of H2O2 and 5.76 g of N2H4
2H2O2(l)+N2H4(l) ———> 4H2O(g)+N2(g)
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03/03/19

reaction vessel remaining?
For the following balanced chemical equation:     2 Mg (s)   +  O2 (g)   →  2 MgO (s)   3.6 moles of Mg are put into a reaction container with 1.4 moles of O2 gas. The reaction is run until all of... more
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03/02/19

What is the pressure of BrCl in an equilibrium mixture of Cl2, Br2, and BrCl if the pressure of Cl2 in the mixture is 0.115 atm and the pressure of Br2 in the mixture is 0.450 atm?
What is the pressure of BrCl in an equilibrium mixture of Cl2, Br2, and BrCl if the pressure of Cl2 in the mixture is 0.115 atm and the pressure of Br2 in the mixture is 0.450 atm? Kc=4.7*10^-2
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02/28/19

Solutions - Chemistry
A solution has 42.7 grams of KOH dissolved into 692.8 mL. How much water in mL must be added to reduce the concentration of the solution to 0.073 M?
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02/28/19

Chemistry question

Osmium has a density of 22.78 grams/cm. The mass of a weighing boat is tared to zero and the mass of a piece of osmium and the weighing boat is 103.752 grams. If the piece osmium is added to 47ml... more
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02/28/19

Which are acidic in water and which can be a base (functional groups)
Which of the functional groups listed is/are acidic in water (i.e., would be more soluble in base)? Which of them can be a base (i.e., would be more soluble in acid)?Functional groups: alkanes,... more
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02/24/19

Synthesis of Paracetamol

A student accidentally mixed p-aminophenol with acetic acid instead of acetic anhydride, then an acid/base reaction ended up occurring. Which atom of p-aminophenol , the N or the O is more basic. Why? more
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02/24/19

scientific notation

An atom of gold has a mass of approximately 3.25×10−22 grams. What is the mass of 9000 atoms of gold? Express your answer in scientific notation. Can you help me?
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