I'm just asking about 2 and 3 but I assume you need the web to answer them

x MyLab and Mastering J Course Home MyLab and Mastering envellum.ecollege.com/course.html?courseld316985674&OpenVellumHMAC=Db6918a05d7d0ddc49a113faa2dba85b0# 10001 I Review | Constants | Periodic Table You may want to reference (Pages 420 - 425) Section 10.4 while completing this problem. Part A A chemical reaction occurring in a cylinder equipped with a moveable piston produces 0.641 mol of a gaseous product. If the cylinder contained 0.240 mol of gas before the reaction and had an initial volume of 2.19 L, what was its volume after the reaction? (Assume that pressure and temperature are constant and that the initial amount of gas completely reacts.) Express the volume to thee significant figures and include the appropriate units. Units Submit Previous Answers Request Answer X Incorrect; Try Again; 4 attempts remaining Provide Feedback Next2 P Pearson Copyright © 2021 Pearson Education Inc. All rights reserved. | Terms of Use | Privacy PolicyI Permissions Contact Us| search 78°F…

Be sure to answer all parts. What is the energy (in J) of one photon of 833 nm wavelength light? Enter your answer in scientific notation.  _____x10^J

Pls help me solve the following questiojn, explain it, thank yiou!!

1:25 A O * N 5GUC I 67%, Show What You Know: Learning... KO> O 8 de 8 A new band sensation is playing a concert and recording it for a live album to be released this summer. The band asks the sound mixer if he can autotune the singer who has a habit of singing slightly lower than the note. What would the mixer need to do to the sound wave? How would it affect the characteristics of the wave? В I |Revisión 田 !!!

Chrome File Edit View History Bookmarks Profiles Tab Window Help 31% Fri 10:35 PM sciencenotes.org 101 Chem101 Identify the region o x b My Questions | bart X CHEM 111-Ch 3 Flas X + 1 18 Update : IA VIIIA app.101edu.co 1A 8A Periodic Table of the Elements -1, +1 Apps M Gmail" YouTube Translate P MyLabsPlus | Pear... TE MYTCC Blcackboard Reading List H Не >> 2 13 IIIA ЗА 14 15 16 17 IIA IVA VA VIA VIIA Hydrogen 1.008 Atomic Number Helium 4.003 Valence 2A 4A 6A 5,-3,-3 8 5A 7A 4 5 +4,+3,+2,+1 -110 +1 +2 +3 3 7 Symbol 4,-3 -2,-1 Question 18 of 50 Submit Li Ве F Ne Lithium 6.941 Beryllium 9.012 Carbon Oxygen 15.999 Boron Nitrogen 14.007 Fluorine 18.998 Neon 20.180 Name Atomic Mass +4,-4 15 *5,*3,-3 16*6,+4,+2,-217*7.+5,+3,1 18 +1 +2 13 +3 11 12 14 Na Mg AI Si ci| Ar 3 IIIB ЗВ 4 IVB 4B 6 VIB 6B 7 VIIB 7B 8 10 Identify the region of the electromagnetic spectrum where the wavelength VB 5B VI 8 11 IB 1B 12 IB 2B Magnesium 24.305 Silicon 28.086 Sulfur 32.066 Chlorine 35.453 Argon 39.948…

337.1 nm(wavelength of a nitrogen laser) Express your answer using three significant figures.

measured to have a wavelength of (3.51x10^2) nm. What is the frequency • the correct number of significant figures • written in correct scientific notation Note: Your answer is assumed to be reduced to the highest power possible. Your Answer: -9 8.55 MHz x10 of the light (in Hz)? c = 3.00 x 108 m/s 1 Hz = 1 s 1 Be careful with your units!!! For full credit, your answer must be:

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12. Which of the following has the largest radius? A) Ве B) С C) О D) F E) Ne