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liraira [26]
4 years ago
7

Complete the sentence. When an acid is added to water, hydroxide ions __________.

Biology
2 answers:
sladkih [1.3K]4 years ago
6 0

When an acid is added to water, hydroxide ions increases.

maksim [4K]4 years ago
4 0

it decreases. i know this for sure

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Antibodies, B-cells, killer T-cells, and helper T-cells are all examples of what part of
wlad13 [49]

Answer:

b    whit blood cells

Explanation:

6 0
3 years ago
Which of the following elements is likely to form a ionic bond with potassium
Igoryamba

 The element  that  is  likely  to form a ionic  bond  with potassium is  Cl  (answer A)


<em><u>Explanation</u></em>

Ionic   bond  -  is a  bond formed  when  a  metal  and  a  non metal react.

Metal loses  electron ( donate  electrons)  while  non metal   gains  electrons  ( accept  electrons)  to form  ionic  bond.

potassium  is a metal  while Chlorine(Cl)  is a non  metal.  They  react  to form an ionic  bond   by potassium  donating  1 electron  while  chlorine accept 1 electron.


8 0
3 years ago
The binding of a neurotransmitter on a postsynaptic cell allows potassium ions to diffuse out of the cell. this would result in
xxMikexx [17]

Answer:

The binding of a neurotransmitter on a postsynaptic cell allows potassium ions to diffuse out of the cell. This would result in a NEGATIVE CELL MEMBRANE POTENTIAL which is an HYPERPOLARIZATION event.

Explanation:

The binding of a neurotransmitter to a postsynaptic cell results in a group of channels in the cell membrane called ligand gated channels open or close in response to that binding.

Hyperpolarization occurs when a ligand gated channel opens and allows potassium ion to flow out of the cell.

During hyperpolarization, potential of the cell membrane experience changes which makes it to become more negative.

4 0
3 years ago
Round the number 14.587020 to 4 significant digits. a. 14.59 b. 14.58 c. 14.587 d. 15.00 Please select the best answer from the
gregori [183]

Answer:

A. 14.59

Explanation:

Firstly, rounding a number means making a number simpler but keeping its value close. So rounding 14.587020 means making it look less complex but making sure the rounded value is within range of the original value.

Next, we have to know that to round a number;

* Digits below 5 (<5) rounds down the next digit to their left i.e. we leave the digits the same and turn the rounding digit to 0.

* Digits above 5 (>5) rounds up the next digit to the left i.e. we add 1 to the next digit

Next, to round to 4 significant digits means we want to see only the first four non-zero digits in our value. Note that, all non-zero digits i.e. 1-9 are significant

Hence, 14.587020 will be:

= 14.587020

= 14.58700

= 14.59000

We have four (4) digits which are non-zero already, hence we stop here and remove all zeros to the right

Hence, 14.587020 to 4 significant digits is 14.59 i.e. 14.587020 ~ 14.59

3 0
3 years ago
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The answer is <span>Determine why the beetle is eating one tree but not the other.

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