WA Practice 4 - CHEM 1201 X co Course: 2020 Spring CHEM b My Questions | bartleby A https://www.webassign.net/web/Student/Assignment-Responses/randomize?pos=14&dep=22671454&tags=autosave#question361117_14 ... 15. 0/0 POINTS PREVIOUS ANSWERS 21/100 Submissions Used MY NOTES ASK YOUR TEACHER A gas of unknown molar mass was allowed to effuse through a small opening under constant pressure conditions. It required 1130 s for 1.00 L of this gas to effuse. Under identical experimental conditions it required 600. s for 1.00 L of ozone (03) gas to effuse. Calculate the molar mass of the unknown gas . (Remember that the faster the rate of effusion, the shorter the time required for effusion; that is, rate and time are inversely proportional.) O a) The molar mass is 13.5 g/mol. O b) The molar mass is 65.9 g/mol. O c) The molar mass is 170.3 g/mol. O d) The molar mass is 90.4 g/mol. O e) The molar mass is 35.0 g/mol. Submit Assignment Save Assignment Progress Home My Assignments + Request Extension 3:49 AM O Type here to search 4/10/2020

The solution calls for an exponent. How would I write that?

Why does the x go from:-0.9968x = -0.0025To:x= 0.0025x/0.9968And not:x= 0.9968/0.0025Wouldn't the negatives simply be ignored and the x would remain with:0.9968x and then you divide then 0.0025 without the coefficient x to get the value of x by cancelling out the 0.9968?

Chemistry How to balance centrifuge with odd number of vials with no balancing vials. Given 24 slots, with 7, 9, 11, 13, 15, 17, 19 vials.

CUTICLE OIL O Microsoft W final E.A 1. G fahrenheit x 9 Learning M X O Schoology x O ch 9 key A mukilteo.schoology.com/common-assessment-delivery/start/4592487484?action on.. Bb Molar Mie O Periodic x 3-6, 6-5, & 6-6 Test 6 of 10 © 29 POSSIBLE POINTS: 2 What is the mass of a 5.521 mole sample of MgCl2? O 17.26 g O 100.7 g O 525.7 g O 256.1 g 4. 6 8 9 10 Lenovo DI 23 $ 7 4 t r e ーの づ

Determine the molar mass of Cu(NO,),. Provide an answer to two decimal places.

A particle is immersed in a gas. What would happen with the gas pressure the particleexperiences if the density of the gas was halved?. Explain.

I have calculated this problem various times, but every time I input the answer into the assignment it says it's wrong, I can't find the issue. What could it be?

2. A donut contains 37.8 grams of sucrose (C12H22O11). How many moles of sugar are in the donunt?   Example attached and significant figure rules. Be SURE to apply the significant figure rules to your final answer. Also write how many significant figures each answer has.