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Author Question: A chemist needs 170 milliliters of a 71% solution but has only 47% and 98% solutions available. Find ... (Read 98 times) |
Looking at the sun may not only cause headache and distort your vision temporarily, but it can also cause permanent eye damage. Any exposure to sunlight adds to the cumulative effects of ultraviolet (UV) radiation on your eyes. UV exposure has been linked to eye disorders such as macular degeneration, solar retinitis, and corneal dystrophies.
Every 10 seconds, a person in the United States goes to the emergency room complaining of head pain. About 1.2 million visits are for acute migraine attacks.
The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.
Aspirin may benefit 11 different cancers, including those of the colon, pancreas, lungs, prostate, breasts, and leukemia.