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Calculate the percent increase of mobile device sales from 1998 to 2007. Each mobile device sold in 2007 contained an average of 0.03 gram of gold. Calculate the number of grams of gold that were used in the production of the mobile devices sold in 2007. Assume that the average mass of each mobile device was 0.1 kilogram. The United States Environmental Protection Agency estimates that about 10 percent of the mobile devices sold in 2007 were recycled. Calculate the mass (in kilograms) of the mobile devices sold in 2007 that were not recycled. Discarded mobile devices become part of the electronic waste stream (e-waste). Mercury is often present in e-waste. Identify one negative human health effect, other than death, associated with exposure to mercury. Improper disposal of e-waste has harmed human health and caused environmental damage in developing cou

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Based on the number of phones sold in 1998 and 2007, the percent increase is 500%.

The number of grams of gold used in producing the mobile devices sold in 2007 was5,400 kilograms of gold.

The mass of sold phones that were not recycled is 16,200,000 kg.

What was the percentage increase in phones sold?

= (180 million - 30 million)  / 30 million x 100%

= 500%

What was the mass of gold in phones sold in 2007?

= 0.03 x 180 million

= 5,400,000 grams or

= 5,400 kg of gold

What was the mass of mobile devices that weren't recycled?

= 0.1 kg x 180 million x (1 - 10%)

= 16,200,000 kg

Find out more on the effects of mercury at https://brainly.com/question/8624536.

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