All categories

3 years ago

How many protons does oxygen (O) have? a) 2 b) 4 c) 8 d) 16 e) 32

Biology

1 answer:

Vika [28.1K]3 years ago

5 0

Answer:

Explanation:

Oxygen is one of the most important element present in the environment as well as inside the living organism. The atomic number of the oxygen is eight.

The proton number of an element is equal to the atomic number of that element. The number of proton of an oxygen atom is eight. The number of electron can be lose or gain in the chemical reaction.

Thus, the correct answer is option (c).

You might be interested in

On the graph below, what would explain why the rabbit population levels drastically increased instead of decreasing drastically?

Ilia_Sergeevich [38]

Based on factors affecting population, the rapid increase in the rabbit population could be dues to high fertility rate, abundance of food and lack of predators.

<h3>What is population increase?</h3>

Population increase refers to the increase in the number if species of an organism found in a given habitat over time.

Increase in population can be brought about by factors such as;

abundance of food
high fertility rate
favorable environmental conditions
lack of predators

Therefore, the rapid increase in the rabbit population could be dues to high fertility rate, abundance of food and lack of predators.

Learn more about population increase at: brainly.com/question/2408010

7 0

2 years ago

PLEASE HELP WITH MY BIOLOGY

AlladinOne [14]

Answer is the second option by the way :)) !

7 0

3 years ago

A new screening test for Lyme disease is developed for use in the general population. The sensitivity and specificity of the new

Ahat [919]

Answer:

The predictive value of a positive test is:

B. 18.2%

Explanation:

5 0

3 years ago

This problem has been solved!

larisa [96]

Answer:

The smallest size tube that will hold the entire reaction is 0.5ml

Explanation:

25ul (DNA sample) + 25ul (enzyme) + 50ul (buffer) + 400ul (water) = 500ul total

since 1000ul=1ml, then 500ul = 0.5ml

Answer:

The device that mostlikely would not be used P20

Explanation:

P20 is a pipette used to measure and sample volumes of 20ul maximum.

Answer:

The reaction mix will have 400 units of the enzyme.

The working dilution will be 0.8 Units/ul.

Explanation:

The mix has 20ul of the enzyme which is 20Units/ul. Then we have 20ulx20Units/ul= 400 Units of enzyme in the mix.

Since the final volume is 500ul, the final concentration 400Units/500ul=0.8 Units/ul.

6 0

3 years ago

Please help me answer 4-9 please

Anastaziya [24]

Answer:

decomposers are organisms that break down dead matter in an ecosystem.

8. in the process of photosynthesis.

somebody else help

6 0

3 years ago