Answer:
Demand for recycled paper has increased as consumers have become more aware of the environmental issues surrounding waste disposal. Paper is a natural raw material made from renewable wood and plants. Recycled paper is made from waste paper and paperboard. Both new paper and recycled paper contain traces of heavy metals. However, some types of recycled paper contain more heavy metals than new paper due, in part, to the inks used for printing or adding color to the original paper. Metals can migrate from the paper packaging and containers used for food to the food itself. This metal migration is controlled and monitored to reduce the exposure of humans to heavy metals. Food agencies in each country determine the limit of cadmium, zinc, nickel, and copper in packaging materials. Most countries impose a limit of heavy metals in recycled paper not to exceed 100.0 ppm or 100.0 . The limit for lead in eggfruit, or vegetable-packaging is lower-not to exceed-20.0 mg/kg. The table in Figure a lists the results of the analysis of samples of recycled paper produced by a manufacturer during a three-month period. The goal of the manufacturer is to reduce the amount of heavy metals-especially lead-in the recycled paper it produces and sells. From March to May, the manufacturer varied the
methods of production each month to determine which method would produce paper with the lowest metal content. Each month, lab technicians cut small samples of recycled paper with an area of 1.000 and a thickness of 0.0500 The technicians then prepared the samples for analysis. The average density of the samples is Use the information provided in the figure to answer the
following questions:
a. Did the company reduce the amount of lead in its product between March and May?
b. Which metal was not reduced?
c. Each month's sample represents a different manufacturing process. Which process would you recommend the manufacturer choose to continue to use over the next year while additional processes are tested? Why?
d. What is the total amount of the five metals for the April sample (in mg/kg)?
e. What is the total mass (in mg) of the five metals for the April sample found in the 1.000 sample?
f. Lead has four stable isotopes: 204
Explanation:
so this problem gives us a lot of information and asked us to answer several questions. So, Letter A says, did the company make reduce the amount of lead in its product between March and May? And the answer is yes. The PB levels went from 3.5 to 2.8 22.4, so it was reduced. Be asks which medal was not reduced. And that would be sync because England from 2.723 point 2.723 2 to 3.7 so zinc increased. It was not reduced. See says each month sample represents a different manufacturing process.
<span>If you're not told otherwise who is your audience when you are writing
B. the reader
Hope this helps^^</span>
Answer:
New discoveries influence contemporary psychological perspectives because they provide new ways to look at things, or give new technology for new ways to diagnose problems and try to solve them.
Answer:Điểm gọi trên trán cá rô.
Explanatio nPhương Đông bí ẩn thu hút cư dân của phương Tây với những nét văn hóa, truyền hàng thế kỷ và sự lộng lẫy của trang sức và váy, vẻ đẹp của phụ nữ. Điều đặc biệt quan trọng là điểm trên trán của phụ nữ Ấn Độ, được gọi là Bindi - đây là một trong những bí mật khiến nhiều khách du lịch phấn khích và không nghỉ ngơi: tại sao phụ nữ ở Ấn Độ lại tự đưa ra quan điểm này? Nó là một trang trí hoặc một phương pháp để truyền đạt bất kỳ thông tin cho tất cả các thông tin xung quanh? Cần lưu ý rằng ngày nay bindi rất phổ biến không chỉ với phụ nữ Ấn Độ, mà cả những người dân ở các quốc gia khác như một vết bẩn truyền thống và đồ trang sức có ý nghĩa cụ thể của riêng nó.
Bindi có thể nói về điều gì?
<span><span>The lines in the
excerpt from "L'Allegro" contrast with those ideas in </span>"Il
Penseroso," John Milton are:</span>
Married to immortal
verse
Such as the meeting soul
may pierce
In notes with many a
winding bout
Of linked sweetness long
drawn out
