Chemistry Homework Answers & Questions

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  • Answered A child is holding a balloon containing 25.0 L of

    A child is holding a balloon containing 25.0 L of helium gas at 150 kPa. The child accidentally lets the balloon go. The balloon begins to expand as it rises into the air. Assuming that the temperature remains constant, to what volume of helium will the balloon expand when it rises to an altitude wh...

  • Waiting for answer In section 6.1 you learned that an element is a pure substan...

    In section 6.1 you learned that an element is a pure substance than cannot be broken down into simpler chemical substances by any physical or chemical means write a new definition of an element based on what you have learned 

  • Waiting for answer A-Plus Writer ONLY!!!!!!!!!!!!

    The Expense of Pharmaceuticals In a 500 word assignment, discuss why it is so expensive to produce one medication. Be sure to cite your references accordingly. Submit as an APA formatted paper.

  • Waiting for answer Can someone complete this Outline Lab Report in less than 1...

    Create an Outline Lab Report. This report will contain a title and the 5 elements of a lab report: Abstract, Introduction, Methods/Materials, Results, and Discussion. Our outline is going to be compiled of questions, instead of information. I understand that some of them might be repetitive, especia...

  • Answered About elements

    Hydrogen is metal or nonmetal????

  • Answered chemistry

    Glucose is a compund made up of elements Carbon,oxygen and hydrogen, it's a common ingredient in drinks that provide us with energy. So my question is, does the glucose has the same properties as those of its constituent elements?

  • Answered Na2CO3

    Na2CO3

  • Waiting for answer Organic Chemistry

    Use a Diels-Alder reaction and an Aldol reaction to prepare the following molecule

  • Waiting for answer Molecular features

    Molecular features are often utilised in drug design. Explain how each of the five key molecular features of the drug captopril is used to inhibit the angiotensin converting enzyme.

  • Waiting for answer Good Work Required

    Students will submit four policy statements; to cover an Open Door Reporting Policy, A Safety Concern Card/Questionnaire (include designed form), Verbal Reporting of Injury, and Peer Reporting Initiative as covered in class.

  • Waiting for answer Chem article critique asap 4 hours

    https://www.researchgate.net/publication/230848387_Metabolic_Response_to_Decaffeinated_Green_Tea_Extract_during_Rest_and_Moderate-Intensity_Exercise?enrichId=rgreq-ff1826153e5723760715ece0f6e449df-XXX enrichSource=Y292ZXJQYWdlOzIzMDg0ODM4NztBUzozNDAyMDA3MDMxODQ4OTlAMTQ1ODEyMTU3NzAyMw%3D%3D el=1_x_3...

  • Waiting for answer Chem article critique asap 4 hours

    https://www.researchgate.net/publication/230848387_Metabolic_Response_to_Decaffeinated_Green_Tea_Extract_during_Rest_and_Moderate-Intensity_Exercise?enrichId=rgreq-ff1826153e5723760715ece0f6e449df-XXX enrichSource=Y292ZXJQYWdlOzIzMDg0ODM4NztBUzozNDAyMDA3MDMxODQ4OTlAMTQ1ODEyMTU3NzAyMw%3D%3D el=1_x_3...

  • Answered Balancing equation practice

    Balancing equation practice

  • Answered Ionization Percent

    Find the ionization percent of a mixture containing 0.150 M HONH2 and 0.150 M HONH3Cl.

  • Waiting for answer Chemistry

    This I gave it for prof.kankan and he did not do it can any one do it instead look at chemistry homework I posted and see if you can help me with that tonight. 

  • Waiting for answer Chemistry Excel sheet

    it is an experiment and you will find the instructio in the pictures . Some Exercises require you to look at the book so I took pic that you need from the book. It is important that I need it by tomorrow morning. If you can not do it please do not put me in trouble.

  • Answered REAKSI REDUKSI DAN REAKSI OKSIDASI

    AgNO3 + NaCl ➡ AgCl + NaNO3 CaCO3 + 2HCl ➡ CaCl2 + H2O + CO2

  • Waiting for answer A child is holding a balloon containing 25.0 L of helium gas...

    A child is holding a balloon containing 25.0 L of helium gas at 150 kPa. The child accidentally lets the balloon go. The balloon begins to expand as it rises into the air. Assuming that the temperature remains constant, to what volume of helium will the balloon expand when it rises to an altitude wh...

  • Waiting for answer Chemistry lab report (OBSERVING CHEMICAL REACTIONS/WRITING C...

    First of all I have done this lab before but I need you to edit it following the rubric exactly. My prof wants same as rubric. -I have attached all the pages from the manual book for this experimint (from lab1-lab3). . (FOLLOW THE RUBRIC Exactly) - Also there is the observation sheet from class.

  • Answered Chemistry problem

    What pressure would it take to compresz 350. L of helium gas initially at 1.00 atm into a 2.09 L tank at a constant temperature? 

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