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klasskru [66]
3 years ago
11

What are produced when a base is mixed with water?

Biology
2 answers:
avanturin [10]3 years ago
6 0

Answer:

Hydroxide ion OH-

Explanation:

Bases are bitter in taste, slippery in touch and turns red litmus paper to blue. They contains hydroxide ion OH- and when they are dissolved in water, bases produces this ion. The production of hydroxide ion determines that a solution is basic in nature. When base is reacted with acid, in most of the case the resultant product is water as the H+ ion from acid combines to OH- ion of base to form H_{2}O.

H^{+}+OH^{-}⇒H_{2}O

Veronika [31]3 years ago
4 0

Answer:

<em>Bases are those substances that have </em><u><em>hydroxyl ions</em></u><em> present in it.</em>

Explanation:

When these bases dissolve in water then they tend to separate from the base and yield hydroxide ions.

For instance, sodium hydroxide- There are certain bases that do not have hydroxide ion present in it but still acts as a base because they tend to remove hydrogen ions from the water molecule when dissolved in water.

For instance, Ammonia - it does not have hydroxide ion but still acts as a base.

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An event lasts 4 hours and 20 minutes. How long did the event last in seconds?
daser333 [38]

The event last in 15,600 seconds.

Answer: Option B

<u>Explanation:</u>

We know that there is 60 seconds in one minute i.e., 1 minute = 60 seconds

There is 60 minutes in one hour. i.e., 60 minutes = 1 hour.

Given : An event lasts 4 hours and 20 minutes

4 hours contains 240 minutes,

               4 \times 60=240 \text { minutes }

When the above expressed in seconds,

              240 \times 60=14400 \text { seconds } ------>eq. 1

When 20 minutes expressed in seconds,

              20 \times 60=1200 \text { seconds }------->eq. 2

Adding both eq. 1 and 2, we get

          4 hours and 20 minutes = 14400 + 1200 = 15600 seconds

7 0
3 years ago
Which of the following is conical movement in which the distal end of a structure moves in a circle and the proximal end remains
mars1129 [50]

Answer:

The correct answer is OPTION C (Circumduction)

Explanation:

Circumduction is motions without clear opposites of the part of the body, an example is rotating the hand from the wrist. The answer is circumduction because this type of movement ensures the distal end of a bone moves in a circle while the proximal end remains relatively stable is particularly found in bones where the movements of the joints are opposite to each other example is the ball and socket joint movement. For circumduction to take place, the degree of distance between two bones of the body has to be decreased and sometimes straightened to increase the level of movement or motion produced, there must be a movement towards the middle of the body and sometimes joint movement away from the middle of the body. All these movements are in order.

4 0
3 years ago
A heat engine converts thermal energy into what?
horrorfan [7]

Answer:

i is either chemical energy or electrical energy im mostly going to chemical energy but im not sure

Explanation:

5 0
3 years ago
Which is characteristic of rheumatoid arthritis?
lesya692 [45]

Answer:

c. It is a systemic inflammatory disease.

Explanation:

One of the main characteristics of rheumatoid arthritis is that is a systemic inflammatory disease. This disease can affect the entire body and is not just localized to the individual's joints. In many cases the disease has been known to attack an individual's skin, eyes, lings, heart and even the blood vessels within the individual's system.

4 0
4 years ago
Plants take in<br> and release oxygen gas.
Zina [86]

Answer:

Photosynthesis

Explanation:

Carbon Dioxide is from the air and then release oxygen gas.

4 0
3 years ago
Read 2 more answers
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