Chem Q1 Question 14

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M Apple Google Disney ESPN Yahoo! Biomedical Careers Program ☆ CATEG WHOS r B r SLIVET H₂ (9) + F2(g) → 2HF(g) PC15 (9) → PC13 (9) + Cl₂ (9) CO₂(g) + H₂(g) → CO(g) + H₂O(g) Apple iCloud Yahoo Images Bing Google Wikipedia Facebook Twitter D2L b G 3 2H₂O2 (1) → 2H₂O(1) + O2(g) prod03-cnow-owl.cengagenow.com 2CO2(g) + 5H2(g) → C2H2 (9) + 4H₂O(g) D2L VULLI CETURT JU D2L LITUNTUT T Clear All AS > 0 AS < 0 COWLv2 |... b too close to decide SISS LinkedIn The Weather Channel Yelp TripAdvisor C M G с G C VVIML. + 88 M

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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

Question 11 please

Need help on part C

Chrome File Edit View History Bookmarks People Tab Window Help * 30% (4) Sat 2:00 PM Q OE o Chem101 O General Chemistry I (LAB SCI) X + i app.101edu.co EApps MM Gmail YouTube 9 Maps A Translate https://www.carth. 9 Google Chrome isn't your default browser Set as default Question 7 of 7 Submit Using the equations 2 Sr(s) + O2 (g) → 2 Sro (s) AH° = -1184 kJ/mol CO2 (g) → C (s) + O2 (g) AH° = 394 kJ/mol kJ/mol Determine the enthalpy for the reaction C(s) + 2 SrO(s) → CO2 (g) + 2 Sr(s). 1 2 6 C 03.0 Se VHFORMA The MO -Standa 8 AH ma +/- x 100 8T國山電@ O etv Oct 24 MacBook Air 80 888 SC FS F6 F3 F2 %23 2$ & delete 3 5 8. W E R Y U H J к K ret F V M 4-

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4) The intensity of gamma rays, X-rays, or any other radiation is A) inversely proportional to the cube of the distance from the source. B) inversely proportional to the distance from the source. C) inversely proportional to the square of the distance from the source. D) directly proportional to the square of the distance from the source. E) directly proportional to the distance from the source. dele (1

* 60% iPad 2:23 PM + openvellum.ecollege.com Search Textbook Solutions | Chegg.com 61%iPad2:20 PM+openvellum.ecollege.comSearch... Course Home My Courses KOnline homework for CH08 Course Home Chapter 8 Multiple-Choice Problem 45 > 35 of 41 Syllabus Scores Review | Constants I Periodic Table еТext Document Sharing User Settings Part A Course Tools The process of crenation occurs when the concentration outside a cell is and is said to be higher in concentration; hypotonic higher in concentration; hypertonic lower in concentration; hypertonic lower in concentration; hypotonic Request Answer Submit Pearson Copyright O 2019 Pearson Education Inc. All rights reserved.| Terms of Use | Privacy Policy Permissions Contact Us

[Review Topics] It takes 1.15 kJ of energy to heat a certain sample of pure silver from 12.0 °C to 16.4 °C. What is the mass of this sample of silver? The specific heat of silver is 0.24 J/g °C. Mass= g Submit Answer Retry Entire Group Show Hint 7 more group attempts remaining [References] Cengage Learning Cengage Technical Support Previous Next> Save and Exit

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.

View History Bookmarks Develop Window Help A east.cengagenow.com [References) 1 pt EXERCISE Unit Conversion 1 pt Drag conversion units onto the boxes in the equation to make conversions. Some boxes can be left empty. Click on a unit to remove it from its position. 1 pt 1 cm³ Cu 9 g Cu 9.5 x 1021 atoms Cu 1 g Cu 1 pt 1 kg 1000 g 1 cm = 1 mL 1 pt 1 L 1000 cm3 1 pt 1 pt 520 L x 1 pt 1 pt 1 pt A piece of copper has a volume 520 L. What is the mass of the sample, in units of grams? In the boxes above, enter the correct setup that would be used to solve this problem. 1 pt 1 pt Check Next (2 of 3) 1 pt 1 pt Submit Answer Try Another Version 2 item attempts remaining 1 pt

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

Cla Unit 1 Review Answer KEY- Goo X it 1 Quiz #4 Properties of MathX cl.castlelearning.com/Review/CLO/Student/Assignment/Questi Home - Hudl M East Rochest Quizlet Live Quizlet schools.org bookmarks Unit 1 Quiz #4 Pro 1 of 10 Question 1 Review Which statement describes a chemical property of hydrogen gas? 1. Hydrogen gas burns in air. 2. Hydrogen gas is colorless. 3. Hydrogen gas has a density of 0.000 09 g/cm at STP. 4. Hydrogen gas has a boiling point of 20. K at standard pre Standard

Pls pls select right option and pls do it accurate it's important for me

Please provide the answer in Litres with 3 significant figures.

Use the data listed in the supporting materials to calculate the equilibrium constant, Kp, for the synthesis of HCI at 298.15 K. H2(g) + Cl2(g) =2 HCI(g) 4.0 2.47e33 What is the value of Kp if the equilibrium is expressed as below? 1/2 H2(g) + 1/2 Cl2(g) = HCI(g) 4.0

A model for the compound 2,3-dimethylbutanoic acid is shown. 20 F3 E D Write a balanced chemical equation that shows the formation of 2,3-dimethylbutanoic acid from the elements carbon (C), Hydrogen (H₂) and oxygen (O₂). Submit Answer $ ball & stick + labels (Use the smallest integer coefficients possible and do not include states. Enter the elements in the order: C, H, then O in the product box.) 4 DOO DOD F4 R + LL H F [References] Use the References to access important values if needed for this question. 65 % Retry Entire Group F5 + T H Cengage Learning Cengage Technical Support 6 MacBook Air G 9 more group attempts remaining F6 Y - & 7 F7 H U 8 00 FB J 9 F9 K M 0 O A F10 « Previous Email Instructor P Next Save and Exit = A F12

Heating Cold Water: 199.74g 1) Mass of Beaker and Cold Water: 107.36 92.38 2) Mass of Beaker: 3) Mass of Cold Water: 4) Final Temperature of Cold Water: 90 °C 5) Initial Temperature of Cold Water: 21 °C 6) Change in Temperature: 69 °C 7) Elapsed Time: 324 SecondS Apout Heating Hot Water: 1) Mass of Beaker and Hot Water: 199.75 107.36 92.39 2) Mass of Beaker: 3) Mass of Hot Water: 4) Final Temperature of Hot Water: 90 °C 5) Initial Temperature of Hot Water: 45 °C 6) Change in Temperature: 45 °C 7) Elapsed Time: 2016 seconnds

Would you agree to buy 1.23 x 1021 gold atoms for $17? Explain why or why not, showing all work. The current price of gold is 63.18 dollars/gram

The movie below shows some molecules in a tiny sample of a mixture of gases. 12345 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 ||||||||||||||||||I Drag the slider to see how the molecules move. Does a chemical reaction happen during this movie? If a chemical reaction does happen, write a balanced chemical equation for it. П yes no carbon nitrogen chlorine key hydrogen oxygen bromine X

History stry Bookmarks X O8 https://app.101edu.co FEB 13 Tools Window 80 Aktiv Chemistry F3 Balance the following chemical equation (if necessary): Si₂H3(s) + O₂(g) → SiO₂(g) + H₂O(g) 1 $ + Reset Help SIO₂ O F4 X 04 03- 3 0₂ 03 ) + F5 Question 40 of 47 0²- 4 0 ↑ H₂O < 0- 5 05 □+ ALL F6 6 0 1 MacBook Air 2 2+ & 7 Si₂H3 07 (s) (1) (g) (aq) 4 F7 8 9 0 08 09 Do • x H₂O 4+ ♫ A * 0₂ FB Delete tv w O O DD F9

Part A MISSED THIS? Read Section 7.3 (Pages 267 - 272) ; Watch IWE 7.2. An unknown mass of each substance, initially at 21.0 °C, absorbs 1980 J of heat. The final temperature is recorded. Find the mass of each substance. a. Pyrex glass (T; = 55.7 °C) Express your answer using two significant figures. Πνα ΑΣφ m = g Submit Request Answer Part B sand (Tf = 62.3 °C) Express your answer using two significant figures. Hνα ΑΣφ m = g Submit Request Answer Part C ethanol (T; = 44.0 °C) Express your answer using two significant figures. Hνα ΑΣφ ? m = g Submit Request Answer