Answer:
1a. monovalent or univalent
b. Group
2a. divalent
b. Different group
Explanation:
It means celebration for the 12th party
Uses Of Periscope
It is used in submarines to determine the distance of a torpedo and helps in deciding the right time for the attack.
It is used in a nuclear reactor to observe the chemical reactions that are taking place.
In military periscopes are used to observe from their hiding position. Hi
When encountering another vessel in darkness, the visible white, red and green lights indicate you are approaching a powerboat head-on.
In this case neither vessels has the right of way. Both boat operators must take early action to stay out of the way for other vessels. The operators must reduce their speed and steer to starboard.
<h2>Further Explanation</h2>
The visible white, red and green lights are all navigation lights with different purposes. However, the four common navigational lights are sidelights, sternlight, Masthead light and all-round white light.
Sidelights are also referred to as combination lights. It is the combination of red and green light and visible to another vessel that approaching head on or from the side. The green light is the boat starboard (right hand side) and the red light is the port side (left) of a vessel.
The sternlight is the white light seen from behind the vessel.
The masthead light is a white light. The white light shines forward to all sides of the vessels. It is on all power driven vessels.
All-round white light is a white light used to combine sternlight and masthead light to form a single white light so that it can boldly be seen by other vessels.
LEARN MORE:
KEYWORDS:
- boat
- head-on
- masthead light
- white light
- operators
Answer:
Calcite
Explanation:
When in contact with hydrochloric acid, calcite releases carbon dioxide gas.
