A. Base , salt , water,acid
Answer:
(a)0.0002778
(b)![1.16\times10^{-5}](https://tex.z-dn.net/?f=%201.16%5Ctimes10%5E%7B-5%7D)
Explanation:
(a) The minute hand has a period of 60 minutes ( or 60 * 60 = 3600 seconds) for 1 circle. Its frequency per second would be
1 / 3600 = 0.0002778
(b) The hour hand has a period of 24 hours ( or 24*60 * 60 = 86400
seconds) for 1 circle. Its frequency per second would be
![1 / 86400 = 1.16\times10^{-5}](https://tex.z-dn.net/?f=1%20%2F%2086400%20%3D%201.16%5Ctimes10%5E%7B-5%7D)
My calculations state, not rounding, the mass is 1.8
Hydrogen .When acids touches all metal hydrogen gas is emitted .Strong acids is one that can produce a high concentration of hydrogen ions.Hope this helped!