03/16/23

If 23 grams of iron (ID chloride reacts with 41 grams of sodium phosphate, what is the limiting reagent? How much sodium chloride can be formed?
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03/15/23

Chemistry please help.
A sample of compressed methane has a volume of 0.648 L at pressure of 503kPa at 75.0C. What pressure would it be compressed to in order to have a volume of 0. 216 L and a temperature of 50.0C?
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03/15/23

Titration: Strong base and strong acid
Consider a titration of 0.0200 moles HCl (a strong acid) with NaOH (a strong base). At the equivalence point, the total volume of the solution is 78.9 mL. What is the pH of this solution at this... more
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03/15/23

Consider the titration of 30.0 mL of 0.251 M weak base B (Kb = 1.3 x 10⁻¹⁰) with 0.150 M HI. What would be the pH of the solution after the addition of 100.0 mL of HI?
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03/15/23

Consider the titration of 30.0 mL of 0.251 M weak base B (Kb = 1.3 x 10⁻¹⁰) with 0.150 M HI. How many mL of the HI would be required to reach the halfway point?
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03/15/23

Consider the titration of 30.0 mL of 0.251 M weak base B (Kb = 1.3 x 10⁻¹⁰) with 0.150 M HI. What is the pH of the solution before any acid has been added?
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03/15/23

Consider the titration of 50.0 mL of 0.320 M weak base B (Kb = 7.5 x 10⁻⁶) with 0.340 M HNO₃. What is the pH of the solution after the addition of 90.0 mL of HNO₃?
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03/15/23

Complete the balanced molecular reaction for the following weak base with a strong acid:
NACLO+H2S04
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03/15/23

What quantity in moles of NaOH need to be added to 200.0 mL of a 0.200 M solution of HF to make a buffer with a pH of 3.90? (Ka for HF is 6.8 × 10⁻⁴)
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03/15/23

Determine if the following salt is neutral, acidic or basic.

If acidic or basic, write the appropriate equilibrium equation for the acid or base that exists when the salt is dissolved in aqueous solution. If neutral, simply write only NR. Be sure to include... more
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03/15/23

How many nutritional calories are there per gram of candy?
A researcher studying the nutritional value of a new candy place is a 4.2 g sample of the candy inside a bomb calorimeter and combusts it in excess oxygen. The observed temperature increases is... more
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03/15/23

Identify the affect the equilibrium of the system on the following given situation.
Consider the reaction that has reached a state of equilibrium at 200oC:CO(g) + 3H2(g) ⇌ CH4(g) + H2O(g)   exothermic Determine whether each of the following will increase the equilibrium... more
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03/15/23

Chemistry HW help
You decide to try to make a new kind of battery. After doing some research, you decide your two cells will be the NiO2 / Ni2+ and the H2MoO4/ MoO2 half-cells. This leads to the following... more
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03/15/23

chemistry 11 grade
3.2 moles of carbon dioxide held inside in a 15 L container. How much gas at the same temperature and pressure could be held in a 4.0 L container? Avogadro's Equation needed.At what temperature... more
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03/14/23

After performing the experiment, Calculate the percent yield of this reaction.
An excess of sodium carbonate, Na2CO3, in solution is added to a solution containing 17.85 g CaCl2. After performing the experiment, 12.23 g of calcium carbonate, CaCO3, is produced. Calculate the... more
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03/14/23

Chemistry HW help
What is the overall oxidation number of BiO+ and H3BO3?
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03/14/23

What mass of iron is needed to react with sulfur in order to produce 96 g of iron (III) sulfide

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03/13/23

Determine the oxidation number of each element in the reaction. Then determine the elements that are oxidized, reduced, the oxidizing agent, and the reducing agent.
Determine the oxidation number of each element in the reaction. Then determine the elements that are oxidized, reduced, the oxidizing agent, and the reducing agent.Cu (s) + 4HNO3 (aq) ->... more
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03/13/23

Electron configuration for the copper (II) ion
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03/13/23

How many grams of HCl are formed if 60.0 g of BCl3 reacts with excess H2O according to the following balanced reaction. BCl3 (g) + 3 H2O (l) → H3BO3 (s) + 3 HCl (g)
Please show work and answer!
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03/13/23

Stumped on chemical equilibrium problem
Suppose 93.0g of HI(g) is placed in a glass vessel and heated to 1107 K. At this temperature, equilibrium is quickly established between HI(g) and its decomposition products, H2(g) and I2(g):2HI(g)... more
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03/13/23

titration problem
A chemist needs to determine the concentration of a sulfuric acid solution by titration with a standard sodium hydroxide solution. He has a 0.1954 M0.1954 M standard sodium hydroxide solution. He... more
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03/13/23

MATH QUESTION HELP
Solid ammonium chloride, NH4Cl,NH4Cl, is formed by the reaction of gaseous ammonia, NH3,NH3, and hydrogen chloride, HCl.HCl.NH3(g)+HCl(g)⟶NH4Cl(s) NH3⁢(g)+HCl(g)⟶NH4Cl(s) A 4.59 g4.59 g sample... more
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03/12/23

What is the initial concentration of crystal violet solution
What is the initial concentration of crystal violet solution made from adding 4.04 mL of 1.00x10-5 M CV solution to 3.00 mL of 0.100M NaOH(aq) and diluting with water to make a 25.00 mL solution?... more
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03/11/23

Chemistry long HW help
Reaction. E°red (V) H3BO3 (aq) / B (s). -0.8698BiO+ (aq) / Bi (s) 0.3201.Find the overall reaction that will be occurring between the H3BO3 / B and BiO+ /... more
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