Questions1

Please help with question 6

Please help with question 6

Mla pnc.com/women Mail - Whi x O Grades for x Course Ho X G oxide cont X G Exercise 4.x E 4 - Molecu x O Bananas a X 1.84 x 10- x + envellum.ecollege.com/course.html?courseld 16985674&OpenVellumHMAC=a0b841caaee7feddab1623a6c83a92c0#10001 Review | Constants I Periodic Table Percent composition refers to the mass percent of each element in a compound: mass of element Part A mass percent = x 100% mass of compound > For example, the percent composition of water, H2O. is 11.2% hydrogen and 88.8% oxygen. Therefore, a 100-g sample of water contains 11.2 g of hydrogen atoms and 88.8 g of oxygen atoms. A hydrocarbon is a compound that contains mostly carbon and hydrogen. Calculate the percent composition (by mass) of the following hydrocarbon: CH22 Enter the percentages of carbon and hydrogen numerically to four significant figures, separated by commas. The periodic table will be useful when doing this problem. You can access a periodic table by clicking the "Tools" link in the upper right…

Given Benzene - https://fscimage.fishersci.com/msds/02610.htm   What is its boiling point (____grams per 100 mL)? Final answer must be rounded off to 2 decimal places and shall NOT have any unit.

The beaker below BEST represents a(n) ______________. Assume the particles are surrounded by water molecules that are not shown for clarity.

STPKsYapxmOBQpqJ9sYHEQf udwLFoPO2ojmMGw/edit s Help Last edit was seconds ago B U A G O O- E E E E E E - E - E E 14.5 3 4 5 6 You are asked to perform an experiment to determine the density of square block below. In order to complete your calculations you will need to (AKS 1b, DOK1). Question options: 1. Use the electronic balance to determine the mass of the block. 2. Use water displacement to determine the volume of the block. bD 1. Use the electronic balance to determine mass. 2. Use ruler to measure the length, width, and height to determine volume. C= 1. Use a pipet to determine the mass of the block. 2. Use water displacement to determine to volume of the block. Pr Au 立

Q 2 please I need help

Estimated volume of crucible 25.0 mL  measured volume of crucible 23.0 mL  percent error of estimate (% error=accepted value-experimental value/accepted value ) volume in (use measured volume of crucibleto answer for the ):  kL cL

calculate the mass of the distillate_______________ and the density of the distillate.  use the rules of significant figures include units    trail 1   mass of empty graduate cylinder, gm  5.280 grams volume of distillate, ml  3.01 ml mass of cylinder with the distillate, g  7.936 g boiling point of the distillate, C degree 92.1

Subparts 1-3

Home Conte Meas Take G Three Pears Maste G 4.988 Ta X G Three G Three D Spani -> A dmacc.blackboard.com/webapps/assessment/take/launch.jsp?course_assessment_id%= 402371 1&course_id%3 94346 18&ne pps Work for students... O New Tab M Gmail O YouTube A Maps G7 Translate CHM * Question Completion Status: QUESTION 2 Three separate lab groups determined the density of a metal to be 12.5 g/mL, 13.1 g/mL and 14.8 g/mL. Use these values to calculate the average density among the measurements. O A. 13.5 g/mL O B. 30.5 g/mL ОС. 13.1 g/mL O D. 10.1 g/mL QUESTION 3 Three senarate lah grouns determined the density of a metal to be 12.5 g/mL, 13.1 g/mL and 14.8 g/mL. If the accepted de

3. How many days should the prescription below last? Dr. Barbara Clemmons 121 West Loop Tacoma, WA 00000 phone 555-0404 Sharon Parker For Address R Pamelor 75 mg тро ТРОВIД Disp. #20 Baker C SUBSTITUTION PERMITTED TIMES MeK-3 REFILL 3 Date 1-21 DISPENSE AS WRITTEN DEA No. MO

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M Inbox ( x Precalc X A HOLID X Oluwa X Good ь Chemi X A fake X G spiral G the sar X X Micros X https://papers.xtremepape.rs/CAIE/IGCSE/Chemistry%20(0620)/0620_s05_qp_6.pdf The same mass of zinc was used each time. The volume of acid used was different each time. Use the syringe diagrams to record the volume of hydrogen produced each time in the table. Table of results volume of sulphuric acid/cm volume of syringe diagram hydrogen/cm3 10 20 30 40 50 60 70 80 10 20 30 40 50 60 70 80 15 10 20 30 40 50 60 70 80 20 10 20 30 40 50 60 70 80 25 10 20 30 40 50 60 70 80 30 10 20 30 40 50 60 70 80 10 20 30 40 50 60 70 80 35 40 10 20 30 40 50 60 70 80 ENG 23:09 O Type here to search 27°C US 21/04/2022

Please help with question 2

mol stock solution of L. A chemist makes 0.670 L of mercury(I) chloride (Hg,Cl,) working solution by adding distilled water to 0.270 L of a 0.00000789 mercury(1) chloride in water. Calculate the concentration of the chemist's working solution. Round your answer to 3 significant digits. Submit Assignment Continue Privacy Center Accessibility O 2022 McGraw Hill LLC. All Rights Reserved. Terms of Use 80 F4 F5 F6 F8 F9 F10 $4 % &

ch-Blackboard... on-CLEARED4 cientific Method? 7... 2 QUESTION 8 The mass of one mole of water is 18.02 g. True O False Click Save and Submit to save and submit. Click Save All Answers 90 #5 16 MAR 1 23 5 245 6 tv 100 7

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Pl6 please answer question correctly and show all work, thank you.

vo/index.html?deploymentld355750828934189288909969212&elSBN=9781305657571&snapshotld%3D2199898&id-1... To NDTAP Q Search this cours Use the References to access important values if needed for this question. A sample of GeBra with a mass of 29.6 g was treated in such a way that all of its germanium was captured in the compound Ge S,Br4. Compute the mass (in grams) of this product. grams • Submit Answer 5 question attempts remaining

To determine the mass of Fe2O3 from the given mass of K3Fe(CN)6, the gravimetric factor to be used is a. Fe2O3 / K3Fe(CN)6 b. Fe2O3 / 2K3Fe(CN)6  c. 2Fe2O3 / K3Fe(CN)6 d. 3Fe2O3 / 2K3Fe(CN)6

esc Calculate oral dosage in teaspoons (tsp) of Tylenol suspension liquid (32.0 mg/mL) for a 27.5 lb child. Recommended dosage = 13.0 mg/kg. 1 J' t A N ? Type here to search @ 2 ** W S # 3 E D X C $ 4 0 IOI R F 15 % 5 V OO T G 19 6 B Y 4- & H 7 U N 4+ 8 J hp to 144 1 9 M 9 K 2 fo ➤11 > O O L ADI P : 112 [

121 (OL) Lab 3 Den... V Layout Search References Mailings Review View Help 1 2 3 5 6 I i Lynette Maina Commer 7 LE T Chem 121(OL) Lab 3: Density of Common Materials Part C Thickness of Aluminum Foil (For help understanding the calculations read the introduction and procedure) An experiment performed for Part C to measure the length, width and mass of a piece of aluminum foil gave the following data. You will use this data to solve for the thickness of aluminum foil using the equation from Part C in the introduction. Length of foil Width of foil Mass of foil 13.10 cm 9.50 cm 9.745 g Use the data in the table to determine the thickness of your aluminum foil (in cm) using the 2.6989 g/mL for the density of aluminum then convert this value to meters (m) and micrometers (um). Show your work here (use back if necessary). ons: On Accessibility: Investigate F3 F4 W cm K F5 ►11 F6 K H m um DELL F7 F8 Gu F9 Focus BB 5= 57°F Mostly sunny 4/1 F10 F11 F12 PrtScr "T

Klultiple choice questions. . 10C OF Y Cinarge pases a point ma catulne momnca he curent 12 the Cicut is ma circuHin 2 minute A O,083A. B 02A.

8 of 2 I Review | Constants | Periodic T Part A Suppose that, from measurements in a microscope, you determine that a certain layer of graphene covers an area of 2.60 um?. Convert this to square meters. 2. Express the area in square meters to three significant figures. • View Available Hint(s) ΑΣφ 2.60 µm? Submit P Pearson on Inc. All rights reserved. I Terms of Use | Privacy Policy I Permissions Contact Us 4:39 PM 25% 1/31/2020

Part A If 2.0 x 10-4 moles of S20 in 50 mL solution is consumed in 3 minutes and 17 seconds, what is the rate of consumption of S20 ? Express the rate in mol per liter-second to two significant digits. M 2.128 10 Submit Previous Answers Request Answer X Incorrect; Try Again; 4 attempts remaining < Return to Assignment Provide Feedback