Homework1 - Version 212 – Homework 1 – Sutcliffe –...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Version 212 – Homework 1 – Sutcliffe – (53980) 1 This print-out should have 16 questions. Multiple-choice questions may continue on the next column or page – find all choices before answering. DO NOT ROUND ANY NUMERICAL PROBLEMS. WORK THEM USING 5 OR 6 SIG FIGS AND QUOTE ANSWER TO 4 OR 5 SIG FIGS. SEE HELP LINK ABOVE FOR MORE INFO. 001 10.0 points Which statement would best describe the term “groundwater?” 1. any water found above ground that needs treatment to remove contaminants 2. any water pumped from wells that have been drilled into underground aquifers that needs treatment to remove contaminants 3. any water found above ground that is usually free of contaminants 4. any water pumped from wells drilled into underground aquifers that is usually free from harmful contaminants correct Explanation: 002 10.0 points If a faucet drips one time every five seconds and each drop is 0.050 mL, how many gallons are wasted in four weeks? 1 gal = 3785.4 mL 1. 0.91 gal 2. 32. gal 3. 6.4 gal correct 4. 26. gal Explanation: Using the following information: 1 gallon = 3785.4 mL 1 hr = 3600 s 24 hr = 1 day 7 days = 1 week ? gal = 1 drip 5 s × . 050 mL 1 drip × 1 gal 3785 . 4 mL × 3600 s 1 hr × 24 hr day × 7 days 1 week × 4 weeks = 6 . 4 gal 003 10.0 points Water in parts of the Midwest may be very “hard” and have a calcium ion concentration as high as 400 ppm. What is this calcium ion concentration when expressed as a percent- age? 1. 4% 2. 0.04% correct 3. 0.004% 4. None of these 5. 40% 6. 0.4% Explanation: 400 ppm = 400 1000000 = 0 . 0004 = 0 . 04% 004 10.0 points 19 g of strontium are dissolved in 624000 mL of water. What is the concentration in ppb? Correct answer: 30448 . 7 ppb....
View Full Document

This homework help was uploaded on 04/16/2008 for the course CH 305 taught by Professor Sutcliffe during the Spring '08 term at University of Texas.

Page1 / 4

Homework1 - Version 212 – Homework 1 – Sutcliffe –...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online