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June 19, 2022

When the following molecular equation is balanced using the smallest possible integer coefficients, the values of these coefficients are: calcium carbonate (s) cal

 When the following molecular equation is balanced using the smallest possible integer coefficients, the values of these coefficients are: calcium carbonate (s) calcium oxide (s) + carbon dioxide (g)  Order this paper at Collepals.com They have best Essay Writing Service and excellent Support! They also have 100% Money back Guarantee if […]
May 20, 2022

Research project about the scientific human impa

  Research project about the scientific human impact on the Ozone layer like 4 slides in PowerPoint about it provide some pictures and chemical formula  scientific research presentation using PowerPoint that addresses the human impact on ozone layer . research focusing on the Chemistry aspects of the human impact of […]
May 4, 2022

THE SCIENCES The Evolution of the Periodic System From its origins some 200 years ago, the periodic table has become a vital tool for modern chemis

Use the checklist to write a 4-page research paper about the topic, on whether or not the periodic table needs to be updated or not.  Trouble in the periodic table | Feature | RSC Education https://www.scientificamerican.com/article/the-evolution-of-the-periodic-system/ https://cen.acs.org/physical-chemistry/periodic-table/periodic-table-icon-chemists-still/97/i1 https://www.sciencenews.org/article/periodic-table-history-chemical-elements-150-anniversary https://www.nytimes.com/2019/08/27/science/periodic-table-elements-chemistry.html PeriodictableArticlereferences4-2-1.docx PeriodicTable-2-1.docx Timetoupend-2-1.pdf PeriodicTableIconChemists-2-1.pdf Periodic table Article references Trouble in the […]
April 21, 2022

The fluoride rinse in dental offices usually contains sodium fluoride. Sodium fluoride can be prepared from the reaction between sodium metal and fluorine g

Complete your required discussion prompt: The fluoride rinse in dental offices usually contains sodium fluoride. Sodium fluoride can be prepared from the reaction between sodium metal and fluorine gas. Which properly represents the balanced chemical equation for this reaction? Na(s) + F2(g) → NaF2(s) Na(s) + F(g) → NaF(s) 7Na(s) […]
April 16, 2022

Which enzyme-catalyzed reactions are shared between the gluconeogenesis and glycolysis pathways? (Note: just provide the name of the enz

   1. Which enzyme-catalyzed reactions are shared between the gluconeogenesis and glycolysis pathways? (Note: just provide the name of the enzyme that catalyzes each of the shared reactions). 2. Why are some enzymes needed only in the gluconeogenesis pathway and not in the glycolysis pathway? 3. Which one of the […]
April 16, 2022

How many grams of solute and how many grams of solvent are contained in 450 grams of a 2.50% NaCl (aq) solution?

 How many grams of solute and how many grams of solvent are contained in 450 grams of a 2.50% NaCl (aq) solution? 
April 16, 2022

(10) 80-proof vodka contains 272.7 g of alcohol per 750 mL bottle. The density of vodka is 0.909 g/mL. What is the mass% alcohol in vodk

 (10) 80-proof vodka contains 272.7 g of alcohol per 750 mL bottle. The density of vodka is 0.909 g/mL. What is the mass% alcohol in vodka? 
April 14, 2022

What is an electron configuration? 2. How is the light emitted by an atom related to its electron configuration? expe

Home>Chemistry homework help    pre-lab questions 1. What is an electron configuration? 2. How is the light emitted by an atom related to its electron configuration? experiment 1 data sheet Table 2: Results of Firework Material Ignition Substance Observations  Lithium chloride (LiCl) Sodium chloride (NaCl) Potassium chloride (KCl)Calcium chloride (CaCl2) […]
April 14, 2022

How do nuclear reactions differ from ordinary chemical reactions? (3 points) In a nuclear reaction the elements change

Home>Chemistry homework help   Written Assignment 10: Nuclear Reactions   Answer all assigned questions and problems, and show all work.   1.      How do nuclear reactions differ from ordinary chemical reactions? (3 points)   In a nuclear reaction the elements change into new elements while in a chemical reaction, the […]
April 14, 2022

Redox reactions can also be used in titrations. An example is the titration of ascorbic acid (H2C6H6O6) in lemon juice u

Home>Chemistry homework help In Lab 9, students performed acid-base titrations. Redox reactions can also be used in titrations. An example is the titration of ascorbic acid (H2C6H6O6) in lemon juice using triiodide (I3–). A starch indicator will turn the solution blue-black at the endpoint. The half-reactions involved are shown below. […]
April 14, 2022

Label each of the arrows in the following slide image: A=Chromosomes, B=Nucleus, C=Cytoplasm, D=Cell Wall 2.      What i

Home>Chemistry homework help Your Full Name:     UMUC Biology 102/103 Lab 3: Cell Structure and Function INSTRUCTIONS:   ·        On your own and without assistance, complete this Lab 3Answer Sheet electronically and submit it via the Assignments Folder by the date listed intheCourse Schedule (under Syllabus). ·        To conduct […]
April 14, 2022

What is the conversion from Celsius to Kelvin and why is this conversion useful when applying gas law calculations?   2.

Home>Chemistry homework help    pre-lab Questions 1.  What is the conversion from Celsius to Kelvin and why is this conversion useful when applying gas law calculations?   2. A room is heated from 15 °C to 30 °C. What are these temperatures in Kelvin? 3. Following question 2, what is […]
April 14, 2022

Group 2 “ The Alkaline Earth Metals The alkaline earth elements are in Group 2 of the Periodic Table.  In this experiment Be, Mg, Ca, Ba, and Sr wil

Group 2 – The Alkaline Earth Metals The alkaline earth elements are in Group 2 of the Periodic Table.  In this experiment Be, Mg, Ca, Ba, and Sr will be studied.  All of the alkaline earth metals are M2+ cations (Mg2+, Ca2+, etc.) when they combine with nonmetals in ionic […]
April 12, 2022

 What is the conversion from Celsius to Kelvin and why is this conversion useful when applying gas law calculations?  2.

Home>Chemistry homework help    pre-lab Questions 1.  What is the conversion from Celsius to Kelvin and why is this conversion useful when applying gas law calculations?  2. A room is heated from 15 °C to 30 °C. What are these temperatures in Kelvin? 3. Following question 2, what is the […]
April 12, 2022

Indicate the colored lines you observe in fluorescent light, street lights, car headlight, and an additional light sour

   1. Indicate the colored lines you observe in fluorescent light, street lights, car headlight, and an additional light source of your choice by creating an illustration similar to that of figure 15 in your lab. (10 points)    Data Table 1   Fluorescent   Light Image Car   Headlight Image Street […]
April 12, 2022

What is the connection between the two equations below?                                            acacH => acac¯ + H+ 

These are practical questions to be done in lab, for writing a solution/calculation with no values/experimental results please make an educated guess because the prac is yet to be done. For the other questions please try to be as specific as possible. Read the document I uploaded (it has procedures […]
April 12, 2022

Briefly summarize what you did to perform this experiment and what equipment you used. Do not simply copy the procedure

 Procedure: Briefly summarize what you did to perform this experiment and what equipment you used. Do not simply copy the procedure statement from the lab manual I need it after 4 hours 42-0151-00-02-EXPDeterminationofKaforaWeakAcid.pdf 42-0166-00-02-EXPEquilibriumandLeChatliersPrinciple.pdf 42-0129-00-02-EXPThePropertiesofWater.pdf 42-0195-00-02-EXPReactionOrderandRateLaws1.pdf 42-0158-00-02-EXPHesssLaw.pdf 42-0186-00-02-EXPOxidation-ReductionActivitySeries.pdf 42-0149-00-02-EXPColligativePropertiesandOsmosticPressure.pdf 42-0139-00-02-EXPAntacidAnalysisandTitration.pdf 42-0153-00-02-EXPElectrochemicalCellsandCellPotentials.pdf Determination of Ka for a Weak Acid Hands-On Labs, […]
April 12, 2022

Given what you have learned about the hydrogen bonding shared between nucleic acids in DNA, which pair is more stable un

Given what you have learned about the hydrogen bonding shared between nucleic acids in DNA, which pair is more stable under increasing heat: adenine and thymine, or cytosine and guanine? Explain why. Under increasing heat, the more stable pairs are; Guanine (G) and Cytosine. This is because their composition consists […]
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