Question

1. One of the essential minerals in the human body is salt. How much salt (NaCl) is in the average adult human body?
2. If you fill a glass to the brim with ice water and the ice melts, what will happen?
3. The symbol Sb stands for stibnum or stibnite. What is the modern name of this element?

Answer 1

Explanation:

1. So a 50kg person would contain around 200g of sodium chloride – around 40 teaspoons.

2. When the cube melts, the surrounding liquid can move into the space it filled. If the glass contains only ice and water, it will not overflow because the amount of extra water will be equal to that previously displaced by the cube

3. Sb (stibnum) is antimony.

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