7) Graph w_ Low Accesibility

Chrome File Edit View History Bookmarks People Tab Window Help 74% Sat 2:20 PM Kayley Valentine OneLogin x O Microsoft Office Home Content New Tab AALEKS-Kayley Valentin x A www-awu.aleks.com/alekscgi/x/Isl.exe/1o_u-IgNsikr7j8P3jH-IBI5ahvJxLWwcNXdqGDIniqicnbb-P2iXO0filILEyqsWt8DxNO... E Apps HPrechecks: Test 2. O MATTER Calculating mass density Try again. Kayley v A chemist v v as a safety inspector finds an unmarked bottle in a lab cabinet. A note on the door of the cabinet says the cabinet is used to store bottles of pentane, dimethyl sulfoxide, acetone, methyl acetate, and chloroform. The chemist plans to try to identify the unknown liquid by measuring the density and comparing to known densities. First, from his collection of Material Safety Data Sheets (MSDS), the chemist finds the following information: liquid density 0.63 mL pentane db dimethyl sulfoxide 1.1 0.79 acetone 0.93 mL methyl acetate 1.5 chloroform 3 Next, the chemist measures the volume of the unknown liquid as 1797.…

Could you please help me format this question, I've been stuck on it for some time now.

Please help answer this

15a

2. In a Mars Direct mission, the astronauts would return home in an Earth Return Vehicle (ERV) fueled by     methane and oxygen produced from terrestrial hydrogen and Martian CO2     helium-3 extracted from the lunar surface     finely-ground Martian rocks accelerated by an electromagnetic mass driver     cheap, traditional kerosene fuel brought from Earth   We might go back to the Moon someday to mine the lunar surface for an energy resource called     methane     antimatter     hydrazene     helium-3

i think this is physics and chemistry so i hope you can help me to answer this, only TRUE OR FALSE

What safety rules did Andrew break?

Catra wanted to determine the concentration of copper(II) chloride at an unknown concentration .She began by trying to determine the value of epsilon (ε) using beers law for copper(II) chloride. Catra remembered in lab when they wanted to solve for epsilon they would test the absorbance for three different concentrations of a known solution and then graph it. Catra got frustrated and asked Shera what to do next to determine epsilon. What should Shera tell Catra?

You work in a research organization that is looking for markers of various diseases that can be used as a diagnostic for the disease. It has been reported in the past that high levels of Cu are found in the sweat of people with cystic fibrosis. One of the research projects is focused on looking for high levels of Cu in samples that can be obtained non-invasively such as saliva, sweat, hair, nails, etc. The lab will analyze large samples for Cu. What instrument would you recommend purchasing to support this work, Atomic absorption spectrophotometer or an inductively coupled plasma atomic spectrophotometer? Explain the basis for your decision.

口 A docs.google.com Classroom | Google for Education Alchemy Lesson 20 & 21 Worksheet Andres Carrill Andres Carrillo - Alchemy Lessons 20 & 21 Worksheet Update Apple ID S Some account servi available until you sig File Edit View Insert Format Tools Add-ons Help Last edit was 2 days ago 100% Normal text Arial 11 BIUA E = E = EE E - E E X 1 2 3 4 .. 6 I 7 O 8 1 IC 5 AIV-20: Getting Connected (Writing lonic Compounds) Part 1: Putting together lonic Compounds lonic compound Metal Number of cation nonmetal number of anion total total charge = 0 valence valence number of electrons electrons valence electrons NaF, sodium fluoride Na Na + (+1)+(-1) = 0 F- 8. MgO, magnesium oxide Mg 02- (+2) + (-2) = 0 MgCl2, magnesium chloride Mg CI 7 16 (+2) + 2(-1) = 0 Ne, neon Ne 8 BeF2, beryllium fluoride Be MgS, magnesium sulfide CaCl,, calcium chloride Na Br K Se Al Al203, aluminum oxide Al Al F

Rsimi, Nour 2023VVA Chemistry.7b.FA1 An unknown solid substance is heated according to the temperature versus time graph below. Temperature (°C) 70 40 30 20 288 8 2 0 0 5 15 Time (min) 20 00 4 of 5 1 2 3 4 5 25 While the substance is a liquid, at what temperature do the molecules of the substance have the greatest average kinetic energy? 2 % 3 4 5 16 7 8 insert

I need help with my reasoning for my claim and evidence which I have already done. I need help coming up with a thorough reasoning from what I wrote and the article attached.

[References] For the graph shown below: 45 40 35 30 25 20 15 10 5 FA 4 8. 10 What are the coordinates of point B: (x, y) = What are the coordinates of point E: (x, y) =1 Based on these two points, what is the slope of the line? Slope = Submit Answer Retry Entire Group 4 more group attempts remaining Cengage Learning | Cengage Technical Support MacBook Air 80 DII

K Haylee Scott - cp Zoom meeting lin com/web/viewer.html?state%=D%7B'ids %3A%5B"1zOflgo1GoQFrdviJ6PWx8L3h2j4uav5n"%5D%2C"action"%3A'open C Clever | Portal A Classroom https://sso.theleam. M Oro Grande Elemen. W Yearbook Aven ue Period 5 Scien. Haylee Scott - cprr061.pdf Building Vocabulary From the list below, choose the term that best completes each sentence. matter physical change endothermic reaction chemical change chemistry precipitate exothermic reaction 7. Any change that alters a substance without changing it into another substance is a(n) 8. is anything that has mass and takes up space. 9. A reaction that releases energy in the form of heat is called a(n) 10. A(n) absorbed. 11. A chemical reaction is also referred to as a(n) is a reaction in which energy is 12. A(n) a chemical reaction. is a solid formed from a solution during 13. is the study of the properties of matter and how matter changes. OPearson Education, Inc., publishing as Pearson Prentice Hall. All rights reserved…

11:15 .l .l 5.00 KB/S A O (12 4 app.teachermade.com/fill/13c37t (4) C Q Q T TI 4 v Save for Later I'm Done A. John Dalton was an English chemist. His Dalton's Atomic Theory ideas form the atomic theory of matter. Here are his ideas. • All elements are composed (made up) of atoms. It is impossible to divide or destroy an atom. • All atoms of the same elements are alike. (One Atoms of element X Atoms of ement Y Compound of elemeite XandY atom of oxygenis like another atom of oxygen.) • Atoms of different elements are different. (An atom of oxygen is different from an atom of hydrogen.) • Atoms of different elements combine to form a compound. These atoms have to be in definite whole number ratios. For example, water is a compound made up of 2 atoms of 1. What is the name of John Dalton's theory? 2. What are elements made of? 3. An atom of hydrogen and an atom of carbon are 4. What are compounds made of? 5. The ratio of atoms in HCI is: Atomic Structure J. J. Thomson was an English…

4. (Also can you explain what is meant by determinant error)

solve the question 20,21,22 on the paper itself only thanks

H20, H2S H9SO4 CrO3, H2SO4 HO, РСС

Which one is it?

6 Kronos Workforce.. ervice inte... (Last Day Promotio... [References] Given the following data 2 CIF(g) +O2 (g) Cb O(g) +F20(g) 2 CIF3 (g) + 202(g) Cl2 O(g)+ 3F20(g) 2F2 (g) + O2 (g) 2F20(g) AH= 167.4 kJ AH=341.4 kJ AH=-43.4 kJ calculate A H for the reaction CIF(g) +F2 (g) CIF3 (g) AH= kJ Try Another Version 1 item attempt remaining Submit Answer

3. D +je + SNi 4. P – 32P 15 325 16 5. 12°BA + _ie Ba+ _ĝe 56 6. 23°PU → 94 + 235U

Can you explain how you get the answer

How many different ways can 4 identical items be put into 6 possible spaces? How about 4 identical items in 7 possible spaces? & lastly, 5 identical items in 8 possible spaces?

Briefly define the phrase “fit-for-purpose” in relation to analytical chemistry.

Please answer fast it’s very important and urgent I say very urgent so please answer super super fast please For the image attached For 1. a Mass of metal: Trial 1 is 35.0228 g Trial 2 is 35.0915 g Trial 3 is 34.0821 g Mass of water: Trial 1 is 20.0177 g Trial 2 is 20.0250 g Trial 3 is 20.0168 g For delta t of water: Trial 1 is 15.5 C Trial 2 is 15.7 C Trial 3 is 15.1 C For delta t of metal Trial 1 is 80.1 C Trial 2 is 80.2 C Trial 3 is 79.5 C For B my calculated Specific heat is: Trial 1 is 0.462 Trial 2 is 0.467 Trial 3 is 0.466

Safari File Edit View History Bookmarks Develop Window Help Not Secure - a5.chem.binghamton.edu o E LON-CAPA t30p04a O [엘소드/KR Elswrod] 범… MC Kimetsu no Yaiba - Di. As you work on the questions, have your lab manual and text book handy. If you have questions go to one of the office hours and remember, do not leave it for the last minute! In the titration of 25.00 mL of a water sample, it took 19.090 mL of 3.165x 10-3 M EDTA solution to reach the endpoint. Calculate the number of moles of EDTA required to titrate the water sample. (enter your answer with 3 significant figures) 6.04x10-5 You are correct. Your receipt no. is 151-9969 ? Previous Tries The total hardness is due to one or a combination of Ca2+, Mg2+, and Fe2+ in your sample. It is convenient to express this hardness as though it was entirely due to Ca2+. Making this assumption, determine the number of moles of Ca2+ present in the bottled water sample titrated. (enter your answer with 3 significant figures) 6.04x10-5 You are…

3. What w Dinitrogen pentoxide gas is formed by the reaction of nitrogen dioxide gas and nitrogen trioxide gas. Write a balanced chemical equation for this reaction. 0 Continue 55°F Mostly clear Q Search ローロ L X 00 © 2023 McGraw Hill LLC. All Rights Reserved. DELL