FREE Trial
Answered step by step
Verified Expert Solution
Link Copied!

Question

1 Approved Answer

last time posted expert got wrong answer please show all steps thanks PBDEs (polybrominated diphenyl ethers) are a class of compounds than have been used

last time posted expert got wrong answer image text in transcribed
please show all steps thanks
PBDEs (polybrominated diphenyl ethers) are a class of compounds than have been used as flame retardants in furniture. There has been concern that their gradual release into indoor air presents a health hazard. A 200m3 house has a ventilation rate of 2 turnovers per hour. PBDE-209 is emitted from furniture at a rate of .055mg/d. The concentration of PBDE-209 in outdoor air is 0.08ng/m3. What is the concentration of PBDE-209 in the air in the house in ng/m3

Step by Step Solution

There are 3 Steps involved in it

Step: 1

blur-text-image

Get Instant Access to Expert-Tailored Solutions

See step-by-step solutions with expert insights and AI powered tools for academic success

Step: 2

blur-text-image

Step: 3

blur-text-image

Ace Your Homework with AI

Get the answers you need in no time with our AI-driven, step-by-step assistance

Get Started

Recommended Textbook for

Principles And Modern Applications Of Mass Transfer Operations

Principles And Modern Applications Of Mass Transfer Operations

Authors: Jaime Benitez

3rd Edition

1119042739, 978-1119042730

More Books

Students also viewed these Chemical Engineering questions

Question

★★★★★
The Shipbuilders Council of America in Washington, D.C., publishes data about private shipyards. Among the variables reported by this organization are the employment figures (per 1000), the number of...

Answered: 1 week ago

Question

★★★★★
ces The balance sheets for Federer Sports Apparel for 2022 and 2021 are presented below. 2. Prepare a horizontal analysis for 2022 using 2021 as the base year. (Decreases should be indicated by a...

Answered: 1 week ago

Question

★★★★★
=+8.21. A set C in S is closed if Ejecp ;, = 1 for i = C: once the system enters C it cannot leave. Show that a chain is irreducible if and only if S has no proper closed subset.

Answered: 1 week ago

Question

★★★★★
Andular Financial Services was organized on April 1 of the current year. On April 2, Andular prepaid $9,000 to the city for taxes (license fees) for the next 12 months and debited the prepaid taxes...

Answered: 1 week ago

Question

★★★★★
( h ) Implement both gradient descent and the coordinate scheme in code ( from scratch ) and apply it to the provided data. In your implementation: Use \ lambda = 0 . 0 0 1...

Answered: 1 week ago

Question

★★★★★
a. Find the critical points of the following function on the given interval. b. Use a graphing utility to determine whether the critical points correspond to local maxima. local minima. or neither....

Answered: 1 week ago

Question

★★★★★
5. Cumulative frequencies A statistics content developer at Aplia wanted to know whether study skills are related to memory quality. She invited students to perform an online memory task. The...

Answered: 1 week ago

Question

★★★★★
The Gable Company manufactures trendy, high-quality, moderately priced watches. As Gable's senior financial analyst, you are asked to recommend a method of inventory costing The chief financial...

Answered: 1 week ago

Question

★★★★★
Suppose, in the single-factor model, an obligor has a one-period default probability of 2.75 percent and an asset return correlation to the market factor of =0.4. What fractions of its asset return...

Answered: 1 week ago

Question

★★★★★
1. Find the most frequent bigrams (20 pts) Please complete the freq_bigram function to find the nn most frequent bigrams. Your function should return a list of top_n tuples. Each of the tuples should...

Answered: 1 week ago

Question

★★★★★
Objective: This activity has the purpose of helping students to implement sorted lists with links (dynamic memory). (Objective 4). Students Instructions: After studying this module, write the answers...

Answered: 1 week ago

Question

★★★★★
(Appendices) INVENTORY TURNOVER. A recent annual report for The Limited shows cost of goods sold for the year of approximately $5,286 million and average inventory of approximately $769 million...

Answered: 1 week ago

Question

★★★★★
(Appendices) RECORDING SALES. Sullivan Company sells industrial cleaning supplies and equipment to other businesses. During the first quarter of 19x2, the following transactions occurred: a) On...

Answered: 1 week ago

Question

★★★★★
(Appendices) CORRECTING AN ERRONEOUS WRITE-OFF. The new bookkeeper at Karlin Construction Company was asked to write off two accounts totaling $1,710 that had been determined to be uncollectible....

Answered: 1 week ago

Previous Question Next Question