04/23/19

CHEMISTRY SPECIFIC HEAT HOMEWORK HELP
And unknown sample is being evaluated in lab. What is the specific heat of the compound if it requires 106.47 J to raise the temperature of 58.15 grams of the unknown from 15.25 °C to 21.06 °C.?i... more
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04/22/19

Identify the anode and cathode?

Cell 1: Zn(s) │Zn2+(aq) ║ Cu2+(aq) │Cu(s)Identify the anode?Identify the cathode?
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04/22/19

Calculate the concentration of a solution made by diluting 82.0 mL of 5.7 M HBr to a final volume of 675.0 mL.

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04/22/19

How many grams of sodium hydroxide are present in 247.0 mL of a 0.600 M NaOH solution? mass of sodium hydroxide
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04/22/19

Calculate the mass percent of solute in each of the solutions. 2.77 g KCl dissolved in 49.6 g H2O
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04/22/19

According to the following reaction, how many moles of ammonia will be formed upon the complete reaction of 26.6 grams of nitrogen gas with excess hydrogen gas?
nitrogen (g) + hydrogen (g) ammonia (g) 
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04/22/19

According to the following reaction, how many grams of hydrogen gas will be formed upon the complete reaction of 28.4 grams of hydrobromic acid?

hydrobromic acid (aq) hydrogen (g) + bromine (l) 
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04/21/19

How many moles of solute is contained in 1.65 L of 0.125 M solution?
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04/21/19

Which is more soluble in water? Malonic Acod or Propanoic Acid? And why?
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04/21/19

Chemistry - Balancing Equations
If 10.5 g of P4 is reacted with 25.0 g of chlorine to produce phosphorus trichloride (PCl3). Write a balanced chemical reaction. Identify which of the reactant is the limiting reagent. How much... more
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04/21/19

Chemistry - Mass of Iron
A sample of iron was dissolved in hydrochloric acid. The liberated hydrogen was collected over water. The hydrogen occupied 262.0 mL at 26.0°C. The barometer pressure was 748 mm Hg. What mass of... more
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04/21/19

Using molarity formula
How many liters would you have to add to 234g of NaCl to make a .5M solution?
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04/20/19

How many grams of Potassium carbonate are produced from 7.2 * 10^24 formula units of potassium phosphate?
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04/20/19

What is the percent ionization of a weak monoprotic acid?
The concentration of the monoprotic acid = 0.116 M and the Ka = 6.21x10-3
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04/20/19

Isopropyl alcohol is mixed with water to produce 36.0% (v/v) alcohol solution. How many milliliters of each component are present in 865 mL of this solution? Assume volumes are additive.
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04/19/19

How many grams of C3H8 are needed to react with 6.50 moles of O2
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04/19/19

Limiting Reactant
In a reactions of propane (C3H8) and oxygen O2, and water and carbon dioxide were the products, which one of the following would be the limiting reactant if we used 10 grams of propane and 30 grams... more
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04/19/19

If D1 receptors stimulate adenylate cyclase (through GPCRs) and D2 receptors inhibit it, then why do mutations in both have similar effects?
D1 and D2 both refer to specific types of dopamine receptors.I'm sure it has something to do with the fact that the D1 receptors are in regions different from D2 receptors.I know that adenylate... more
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04/19/19

Calculate the standard entropy change for the following process at 298 K: 2H2(g)+O2(g)⟶2H2O(g)
Calculate the standard entropy change for the following process at 298 K:2H2(g)+O2(g)⟶2H2O(g)The standard entropies are as follows: S∘H2(g)=130.57Jmol K, S∘O2(g)=205.0Jmol K, S∘H2O(g)=188.7Jmol K 
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04/19/19

Physical Chemistry question from chemical kinetics
A piece of wood from an archeological source shows a 14C activity which is 60% of the activity found in fresh wood today. What will be the age of the archeological sample would be (t1/2 = 5770 years)? more
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04/19/19

Actual yeild is less than theoritical yeilds? Just because impurities are present in the reactants and shows side reactions

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04/18/19

What volume in L of a 6.3 M solution would have 7 moles in it?
I am not sure how I would solve this.
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04/18/19

Decay rate,k is 4.8% per year=-0.048. What is the half-life in years
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04/18/19

How many grams of copper are produced when 9 moles of silver react with copper (II) nitrate
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04/18/19

Chemistry brooo
6. Draw reaction coordinate diagrams for the following situations:a.) A chemical reaction in which the reactants start with an energy of 200 kJ. Theactivation energy is 50 kJ. The ∆H is -150 kJ. Is... more
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