Can someone answer these questions..? 1. Describe one sign of a chemical change from the example with the iron nail above

2. Describe an additional sign of a chemical change from the expanse above.

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Explanation:

What has happened to the nail is a typical example of a chemical change. In a chemical change, a new substance is formed, heat is released and it is not easily reversible.

The nail has undergone chemical change because it no longer conducts heat as it used to. This shows that the chemical composition of the nail has changed.

Also, the change in the physical appearance of the nail from a shinning metal to reddish brown indicates that a chemical change has occurred.

11 players on a field that has a maximum of 11 players

answer: a tank of height h is filled with water and sits on the ground. water squirts from a hole at a height y above the ground and has a range r. for two y values, 0 and h, r is zero. determine the value of y for which the range will be a maximum.

explanation: