638 Answered Questions for the topic AP chemistry

Ap Chemistry Chemistry

05/16/21

What is the formula for dinitrogen pentachloride?
What is the formula for dinitrogen pentachloride?
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Ap Chemistry Chemistry

05/13/21

Carbon disulfide is produced by the reaction of carbon and sulfur dioxide
Carbon disulfide is produced by the reaction of carbon and sulfur dioxide. What is the percent yield of carbon disulfide if the reaction of 180.0 g of sulfur dioxide produces 72.0 grams of carbon... more
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Ap Chemistry Chemistry

05/12/21

3 moles of nitrogen and 5 moles of hydrogen react to form ammonia. Use the balanced equation below to determine which is the limiting reactant
1/ 3 moles of nitrogen and 5 moles of hydrogen react to form ammonia. Use the balanced equation below to determine which is the limiting... more
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Ap Chemistry Chemistry

05/12/21

need help chemistry its urgent

1/ Use the balanced equation from number four above to determine the limiting reactant if we had a mixture of 5.0 moles of Fe and 4.0 moles of O2.2/ Use the balanced equation below to determine... more
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Ap Chemistry

05/11/21

Calculate the pH of a 100 mL solution of 0.15 M NH3, given the Ka of NH4+ is 5.8 x 10-10. (1 pt)
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Ap Chemistry Chemistry

05/11/21

I have an exam tommorow ( chemistry)
1/ A sample of neon initially has a volume of 2.50 L at 15 degrees Celsius. What is final temperature, in degrees Celsius, is needed to change the volume of the gas to 1.25 L?2/A 10.0 L balloon... more
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Ap Chemistry Chemistry

05/11/21

I HAVE AN EXAM TOMORROW (chemistry)
1/ Write the balanced net ionic equation for a solution formed from AgNO3 (aq)  and K2S(aq)2/Write the balanced net ionic equation for a solution formed from CaCl2(aq) and Na2SO4 (aq)3/Write the... more
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Ap Chemistry Chemistry Biochemistry

05/10/21

need help chemistry

1/ How would the wavelength in the image below change if the temperature was changed to 3800?2/What is the range of wavelengths for the visible spectrum?the picture is in this link :... more
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Ap Chemistry Chemistry Biochemistry

05/10/21

Need help chemistry its urgent

1/  put the following in order from lowest to highest frequency?microwaves, x-rays, radiowaves2/ Which of the objects in the image below emits radiation with a wavelength of approximately .01m?the... more
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Ap Chemistry Chemistry

05/09/21

Help with chemistry plz its urgent

1-Nitrogen dioxide and water react to produce nitric acid, HNO3, and nitrogen oxide.                               3NO2 + H2O --> 2HNO3 + NO2- How many grams of H2O are needed to produce 45g of... more
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Ap Chemistry Chemistry

05/09/21

Help its urgent chemistry

1- Using the equation below, how many grams of CO2 are produced when 54.5g of C2H2 is burned?                               2C2H2 + 5O2 --> 4CO2 + 2H2O2 - Use the following equation to determine... more
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05/09/21

Help with chemistry questions plz

1-Calculate the mass in grams, in 2.28 mol of H2SO4.2-Calculate the number of moles in 144 g of P.3-Calculate the number of moles in 11.0 grams of NaOH4-Calculate the moles of Iron (Fe) in 3.8 x... more
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Ap Chemistry Chemistry

05/08/21

Q: Which Reaction is more likely to occur: Cl20 + 2F-1 → 2Cl- + F20 F2 + 2Cl-1 → 2F- + Cl20 Why?
Q: Which Reaction is more likely to occur: Cl20 + 2F-1 → 2Cl- + F20 F2 + 2Cl-1 → 2F- + Cl20 Why?
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Ap Chemistry Chemistry

05/08/21

Which Reaction is more likely to occur: Cu+2 + Al0 → Cu0 + Al+3 Cu0 + Al+3 → Cu+2 + Al0 Why?
Which Reaction is more likely to occur: Cu+2 + Al0 → Cu0 + Al+3 Cu0 + Al+3 → Cu+2 + Al0 Why?
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Ap Chemistry Chemistry

05/07/21

What mass of Na2A should you add to NaHA solution to create a buffer with pH = 5.82?
Sodium hydrogen succinate (NaHA) is a weak acid with pKa of 5.61. You have 10.0 mL of 0.283 M NaHA solution. How much Na2A should you add in grams to the NaHA solution to create a buffer with pH =... more
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Ap Chemistry Chemistry

05/06/21

What is the NET ionic equation for the following?
AgNO3(aq) + KCl(aq) --> AgCl(s) + KNO3(aq)
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Ap Chemistry Chemistry

05/06/21

What is the TOTAL ionic equation for the following?
Ca(ClO)2(aq) + 4HCl(aq) --> CaCl2(aq) + 2H2O(l) + 2Cl2(g)SrBr2(aq) + K2SO4 (aq) --> SrSO4 (s) + 2 KBr (aq)2 Cr(NO3)3 (aq) + 3 FeSO4 (aq) --> 3 Fe(NO3)2 (aq) + Cr2(SO4)3 (aq)Please keep in... more
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Ap Chemistry Chemistry

05/06/21

How many grams of magnesium cyanide are required to make this solution?
How many grams of magnesium cyanide are required to make 275 mL of 0.075 molarity solution?
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05/05/21

HELP Chemistry. energy required to heat
At 1 atm, how much energy is required to heat 53.0 g H2O(s) at −22.0 ∘C to H2O(g) at 119.0 ∘C? In KJ.
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05/05/21

Vapor pressure of a certain liquid
A certain liquid has a vapor pressure of 92.0 Torr at 23.0 ∘C and 206.0 Torr at 45.0 ∘C.a. Calculate the value of delta H vap for this liquid.b. Calculate the normal boiling point of this liquid.
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05/03/21

Vapor pressure of a certain substance
A certain substance has a heat of vaporization of 33.31 kJ/mol. At what Kelvin temperature will the vapor pressure be 4.50 times higher than it was at 291 K?
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Ap Chemistry

05/01/21

Based on these data, the rate constant for the reaction is ?
The decomposition of nitrosyl bromide at 10 °CNOBrNO + ½ Br2is second order in NOBr.In one experiment, when the initial concentration of NOBr was 0.347 M, the concentration of NOBr dropped... more
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Ap Chemistry

05/01/21

Complete the rate law for this reaction in the box below.
The following initial rate data are for the oxidation of arsenate ion by cerium(IV) ion in aqueous solution:AsO33- + 2 Ce4+ + H2OAsO43- + 2 Ce3+ + 2 H+ Experiment [AsO33-]o, M [Ce4+]o,... more
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Ap Chemistry Chemistry College

05/01/21

The following initial rate data are for the reaction of tertiary butyl bromide with hydroxide ion at 55 C :
The following initial rate data are for the reaction of tertiary butyl bromide with hydroxide ion at 55 oC:(CH3)3CBr + OH-  (CH3)3COH + Br- Experiment [(CH3)3CBr]o, M [OH-]o, M Initial Rate,... more
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Ap Chemistry

04/30/21

Calculate the ph of a buffer solution that is 0.250 M HCN and 0.170 M KCN. Ka=4.9x10^-10 for HCN. A) add 0.099 mol NaOH to calculate the new ph B) add 10 ml of 1.00 M HCl and calculate the new ph
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