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.
Answer:
thin,slender, sparse, meager.
Explanation:
the opposite of thick
Answer:
hope it helps.
Explanation:
1.Ted was discouraged from studying medicine
2.I have doubts whether to have my ears pierced or not.
4.Dad got an expert to give him advice about renovating the house.
3 Jeremy has set standards for himself and wants everything to be perfect.
5.He had his car windows broken yesterday.
6.Jane has a tendency of being late for appointments.
Answer:
This story revolves around two step brothers and their mother. One of the brother Alexis lives with his father and other brother is Aaron who lives with his mother. Both of the brothers have never seen each other.
Alexis returns to meet his mother since his father is going to India for some religious matters. When Alexis reaches the airport he meets his step brother Aaron for the first time.
During their journey from airport to home Alexis shows off his seventeen scars to Aaron and tells a story for each scar. Aaron is not interested in these stories and does not believes in the stories narrated by Alexis.
Alexis has a habit of using abusive language but his mother interrupts and forbade him to use these type of words but he continues using this language without letting his mother know as he then speaks in lower tone so that his mother doesn't notices his abusive language.
They stop their car at Burger King for dinner but Alexis does not eat anything except for fries since he is vegan. When they return to car due to some issue his mother starts crying and worrying about the problem but Alexis helps his mother in fixing the issue.
When they reach the house, Alexis went to backyard and Aaron follows him to see. Alexis have coke in his hand along with 1 white envelopes in which he has several white pills. He eats 2 pills and has it with coke and also offers these pills to Aaron and he has 1 of it. When they go to dining table suddenly everything seems slow to Aaron and he feels that his mother is talking in underwater. Aaron and Alexis both look at each other and laugh loudly.
