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3198 results
  • Waiting for answer Dimensional analysis

    ?atmospheres = 643 Kpa

  • Answered CHEM

    Please read this and solve those problems. 

  • Waiting for answer Average atomic mass, help please.

    Question 110 pts What is the atomic mass of Hafnium if 5% have a mass of 175.967 g/mol, 19% have a mass 177.046 g/mol, 27% have a mass of 178.012 g/mol, 14% have a mass of 178.968 g/mol, and 35% have a mass of 180.037 g/mol?  Submit your answer with three decimal places. Flag this Question Question...

  • Waiting for answer phase diagrams

    the density of a substance is greater in its solid phase than its iquid phase. Is the triple point or the melting point will be at lower temperature and why.

  • Answered Freundlich adsorption isotherm: Physical Chemistry

    Concept and Question about  Freundlich adsorption isotherm Freundlich Adsorption Isotherm Freundlich Adsorption Isotherm equation Freundlich Adsorption Isotherm Assumtion Freundlich Adsorption Isotherm Graph differences between freundlich and langmuir adsorption isotherem Absorbent and Applicat...

  • Answered Reading Assignment (CHEM)

    Please read those paragraph and fill the blank on pink sheet. 

  • Answered Passing ch3br in agcn

    when one passes methyl bromide in alcoholic compound silver cyanide, the results special compared to the reaction of other methyls.Therefore this question studies what happens when ch3br is passed in agcn.silver cyanide is a poisonous compound AgCN or Agx(CN )x that is obtained as a white curdy prec...

  • Waiting for answer chemistry

    ch3br pass through agcn then it gives

  • Waiting for answer calculating mole ratio

    What is the mole ratio of anhydrous nickel sulfate to water in the sample (if there are 6.7x10^-3 mol of water and 2.40x10^-2 mol of anhydrous nickel sulfate)?

  • Waiting for answer biochemistry Literature

    Please read the instructions on the attachments. 1 page summary  Use pubs.acs.org or jbc.org or pubmed.gov You can use a full paper or just a short paper/note The name of the journal has to have biochemistry on it!!

  • Waiting for answer You have gas! Well, you have a 450.0 mL sample of gas in a f...

    You have gas! Well, you have a 450.0 mL sample of gas in a flexible container at 298.15 K. If you heat the gas to a temperature of 315.15 K, what is the new volume in liters (L)? Answer Submitted by indigo11 on Sun, 2017-09-03 15:11 teacher rated 709 times 4.55007 price: $2.00...

  • Waiting for answer You have a mixture of 3 gasses with a total pressure of 750...

    You have a mixture of 3 gasses with a total pressure of 750 mmHg. If gas A is 125 mmHg and gas B is 343 mmHg, what is the partial pressure of gas C?

  • Waiting for answer You have a fixed container with a volume of 5.00L that conta...

    You have a fixed container with a volume of 5.00L that contains 35.0 g nitrogen gas (N2).  If the temperature is 298 K, calculate the pressure in the container.  R = 0.0821 L atm / mol K

  • Waiting for answer I'm looking at the barometer in my lab as I type this questi...

    I'm looking at the barometer in my lab as I type this question. It says the pressure is 760 torr. What is this pressure expressed in mm Hg?

  • Waiting for answer A sample of gas has an initial volume of 3.5 L at a pressure...

    A sample of gas has an initial volume of 3.5 L at a pressure of 970 torr and a temperature of 25*C. If the sample is heated to a temperature of 40*C and expands to a volume of 6.8 L, what is the final pressure in torr?

  • Waiting for answer If I have a cylinder that holds 10.7 L of gas at 298 K, how...

    If I have a cylinder that holds 10.7 L of gas at 298 K, how many liters of gas could it hold at 352 K?

  • Waiting for answer Chemistry

    Grade Level - 10/11 need help with 10 Chemistry questions that I got wrong. need to understand the calculations. 

  • Waiting for answer One way to make ammonia is to synthesize it directly from el...

    The equation for this reaction would be N2 + 3 H2 → 2 NH3. If you are able to stream in 7.0 g of N2, what would be the minimum amount of H2 in grams that would be required to completely react with this amount of N2?  A. 1.5 g  B. 0.5 g  C. 0.75 g  D. 3.0 g  E. none of the above

  • Waiting for answer Propane is commonly used to heat gas grills. Using the balan...

     A.  1 mole O2 = 32.00 g  B.  4 moles H2O = 72.08 g  C.  5 moles O2 = 2 moles CO2  D.  5 moles O2 = 4 moles H2O  E. none of the above

  • Waiting for answer Which of the following is NOT true regarding calculating per...

     A. percent yield = (actual yield / theoretical yield) × 100%  B. The theoretical yield is the amount of product that can be made based on the amount of limiting reactant.  C. The limiting reactant is completely consumed in a chemical reaction.  D. The actual yield is the amount of product actual...

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