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ChemistryLet us assume that Cr(OH)3(s) is completely insoluble.
$45.00Add to cartLet us assume that Cr(OH)3(s) is completely insoluble. Question Let us assume that Cr(OH)3(s) is completely insoluble, which signifies that the precipitation reaction with NaOH(aq) (presented in the transition) would go to completion. If you had a 0.150 L solution containing 0.0160 M of Cr3+(aq), and you wished to add enough 1.30 M NaOH(aq) to precipitate all of the metal, what is the minimum amount of the NaOH(aq) solution you would […]
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Chemistry
What is the concentration of HNO3 if 7.00×10−2mol are present in 905 mL of the solution?
$15.00Add to cartWhat is the concentration of HNO3 if 7.00×10−2mol are present in 905 mL of the solution?
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Chemistry
Exactly 8.5 mL of a H2SO4solution was required to neutralize 22.5 mL of 0.235 M NaOH.
$20.00Add to cartExactly 8.5 mL of a H2SO4 solution was required to neutralize 22.5 mL of 0.235 M NaOH. Question Exactly 8.5 mL of a H2SO4solution was required to neutralize 22.5 mL of 0.235 M NaOH. What was the concentration of the H2SO4solution? GIVEN: H2SO4(aq) + 2NaOH (aq) → 2H2O (l) + Na2SO4 (aq)
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Chemistry
Determination of Water Hardness Using a Titrator.
$25.00Add to cartDetermination of Water Hardness Using a Titrator.
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Chemistry
Please choose the best reagent for the following rxn.
$15.00Add to cartPlease choose the best reagent for the following rxn.
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Chemistry
Write an equilibrium expression for each chemical equation.
$25.00Add to cartWrite an equilibrium expression for each chemical equation. Question Write an equilibrium expression for each chemical equation involving one or more solid or liquid reac- tants or products. Part A. HCHO2(aq)+H2O(l)⇌H3O+(aq)+CHO−2(aq) Use A for [HCHO2], B for [H2O], C for [H3O+], D for [CHO−2]. Part B. CO2−3(aq)+H2O(l)⇌HCO−3(aq)+OH−(aq) Use A for [CO2−3], B for [H2O], C for [HCO−3], D for [OH−]. Part C 2C(s)+O2(g)⇌2CO(g) Use A for [C], B for [O2], C for [CO].
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Chemistry
The atomic number of an element is 6. How many electrons do exist?
$15.00Add to cartThe atomic number of an element is 6. How many electrons do exist? Question the atomic number of an element is 6. How many electrons do exist in the second electron shell in this element.
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Chemistry
How do you find the density of a solution given mass and volume?
$10.00Add to cartHow do you find the density of a solution given mass and volume?
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Chemistry
How do you find the molar absorptivity using Beer’s Law?
$10.00Add to cartHow do you find the molar absorptivity using Beer’s Law?
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Chemistry
Show all steps in full and be sure to put the right unit.
$15.00Add to cartShow all steps in full and be sure to put the right unit. Question Show all steps in full and be sure to put the right unit. How many moles of Ar gas are in a 50.0 L tank at 20.4 degrees celsius and 759.1 torr?
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Chemistry
Electrolyse process is occured.
$15.00Add to cartElectrolyse process is occured. Question electrolyse process is occured. In this process, anode is aluminium and cathode is platin. In addition this, electrolyte is sulfuric acid. This sulfuric acid is warmed ( get hot ) during electrolyse. How can we cool this sulfuric acid (we need to get cold this sulfuric acid but how?)