E1_density_in_lab_worksheet_SP2023

1. In the stone age, it took this long to cut down a tree?() 1 hour, 1 day, 1 week or 1 month?2. An Egyptian pharaoh who died in 1324 B.C. was buried with an iron head rest, bracelet, and a dagger. () King Tutankhamen, King Tutankayulatan, King tutankamin or King Tutakayun?3. motorcycle plastic hydraulic lines are made off() brated stainless steel, high carbon steel, medium carbon steel, or low carbon steel?4. This is important for products with moving parts.() Brass, platinum, Bronze or Steel5. used in the hospitals with extra chromium in it to resist the salts in body fluids.() high carbon steel, low carbon steel, stainless steel or mild steels?6. Mobile nutrients like nitrogen are found deeper into the soil profile while non-mobile nutrients like potassium and phosphorous are found at the _____ soil profile.() zero to six inches, composite sample, 24 inches, or Depth?

TRUE OR FALSE __________ 6. The bowl of the funnel for gravity filtration may be filled to the brim. __________ 7. Transfer liquids and solutions from a reagent bottle or beaker with the aid of a stirring rod. __________ 8. Never touch, taste, or smell a chemical unless specifically told to do so. __________ 9. If uncertain as to how to dispose of a chemical, dumping it into the sink followed by copious amount of water is a safe disposal procedure. __________ 10. A centrifuge machine should be balanced with an even number of centrifuge/test tubes, placed across the rotor from one another, with equal volumes of liquid.

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Question 20

75 min total time. No file uploáds. Question 1 What is the classification of the compound shown below? CH2OH C=O Но—с—н ČH2OH A) L B) D C) A sugar this small is not classified as L or D. D) Not applicable O B O A O D MacBook Air esc 80 888 F2 F3 F4

Chemistry

please skip this if you have already answered. I will upvote if it is correct and complete. thank you

The purpose of the many chemical reactions in our bodies is to ________.

-2 -1 0 +1 +2 +3 +4 +5 +6 +7 將門路 ?? 5NO2 + 6H+ + 2MnO4 R9 555 5NO3 + 2Mn+² + 3H2O Reset Help

for forensic chemistry :  If a vehicle with four wheels is traveling in a linear path through soft dirt, how many and which tires would you expect to leave tire track impressions?

Can you help me with question 2? Thanks!

1. For each field, which problem is being addressed by the consumer product? 2. What are some chemical components of the consumer products?

Question 19

Provide a short description of multiplicity and give an example of how it relates to someone life. 150 words minimum

Please correct answer and don't use hend raiting

Question 21, thank you

For each of the following equilibria, write the equilibrium constant expression for Ke Y Part A 2N₂Os (9) 4NO₂(g) + O₂(g) O Ke = O K₂= O K. OK- Submit Part B [NO₂[0₂] N₂O₁ Ke = [NO₂¹0₂] N₂0₂ N₂O₁] NO₂0₁ N₂O, NO₂] O₂ Request Answer 3F2(g) + Cl₂ (9) 2CIFs (9) (CIF₂ CI, P ICE, P Pearson

Chemistry is the study of ______ .

As a material expands its weight per unit of volume (also called density) _______ ? Group of answer choices Changes unpredictably Decreases Increases Stays the same

234Th90 -->  __________  +  0e-1

• Stock solution: 1000 mg/L Target sample concentrations: 50-400 mg/L • Create a 5-point standard dilution to cover the test • If each test only needs 10 mL, make plans to make the dilution so you have 20 mL of each concentration. ·

Give correct answer

Part C Say you glued two samples together; a 5.00 g sample of acrylic with a density of 1.19 g/mL and a 2.35 g sample of Teflon (d = 2.22 g/mL). What is the density of the combined sample? Be careful here and remember the difference between intensive and extensive properties. • View Available Hint(s) ? 1.29 g/mL

Question 23 Not yet answered Marked out of 1.00 P Flag question 17NEW June 20 2019. Analysis of several plant food preparations for the content of organics yielded the following data: 16.40, 16.36, 16.26 and 16.34%. The true value is 18.50%. The results of this analysis are, Select one: a. Inaccurate but Precise b. Accurate and precise c. Accurate and imprecise d. Inaccurate and imprecise Question 24 Not yet answered Marked out of 1.00

Document2 (Autösaved) - Microsoft Word (Product Activation Failed) File Home Insert Page Layout References Mailings Review View Cut A Find - * 10 - A A Aa 粤 A 三,三,年,套 公 T Arial AaBbCcDc AaBbCcDc AaBbC AaBbCc AaB AaBbCc. AaBbCcD AaBbCcDt AaBbCcD AaBbCcDc AaBbCcD AgBbCcD AABBCCDE AABBCCDE A Copy ahe Replace Paste BI U - abe x, x I No Spaci. Heading 1 Subtle Ref... Intense R.. Change Styles I Normal Heading 2 Title Subtitle Subtle Em.. Emphasis Intense E... Strong Quote Intense Q.. VFormat Painter A Select - Clipboard Font Paragraph Styles Editing 11 I 13 14 15 . 1 . 16. . 18 I 19 L Choose the set of letters corresponding to the best answer on the compounds shown. For 1-4: 1. Which will form a secondary alcohol upon reduction? 2. Which will produce a positive reaction with Tollens' test? H. HO. TAY WIN TYN NEW 3. Which will react with NaHCO3? 4. Which compound can be oxidized by KMNO4 to NEW? For 5-8: 5. Which is the most acidic? 6. Which will form an alcohol and a NH2 OCH3 carboxylic…

Match column A (tests) to column B (positive results) and column C (substance) in answering, Use CAPITAL LETTERS for column B and small letters for Column C. Separate each anser with one(1) space not comma(,). If there are more than one answer for each column then write possible answers Ex. 1. B c 2. B c e

Importance of forensic chemistry

ZHN 1 eq Ac20 EtzN HO

All one question