All categories

3 years ago

Results published in journals provide the most reliable information about new discoveries because _____.

Chemistry

2 answers:

stepan [7]3 years ago

7 0

Answer: A. they are proven before being published and D. they are reviewed by experts

Explanation: Journals are the written documents in which the scientists jots down about his proven fact or theory which has resulted through various kinds of rigorous experiments and has also been reviewed by the scientists as well.

Before publishing any kind of own work, the scientists first try to explain it which results in experimentation. After than, it would be reveiwed through his senior authoritites like senior scientists, who will remark it and will try to modify it or amend it if they would find any kind of mistake.

After the last verdicts from the scientist , it would go for the publication.

sesenic [268]3 years ago

3 0

The correct answer is D, they are reviewed by experts.

(Please mark this answer as Brainliest and leave a Thanks if I helped you!)

You might be interested in

A baseline for an experimental investigation is provided by the

Rina8888 [55]

A baseline for experimental investigation is provided by an hypothesis. This is a must before conducting experiments. Also, it is the hypothesis that is being proved by doing the experiments. So, hypothesis is very important in research studies. Hope this answers the question.

8 0

3 years ago

Read 2 more answers

Calcium (Ca) and oxygen (O) combine to form an ionic compound. Which best describes the electron dot formula for this compound

Blizzard [7]

CaO because oxygen have 2 dots and calcium as well
(oxygen valency -2
calcium valncy +2)= CaO

3 0

3 years ago

Perform the calculation and record the answer with the correct number of significant figures.

kotykmax [81]

The question is incomplete, here is the complete question:

A. (6.5-6.10)/3.19

B. (34.123 + 9.60) / (98.7654 - 9.249)

Answer:

For A: The answer becomes 0.1

For B: The answer becomes 0.4884

Explanation:

Significant figures are defined as the figures present in a number that expresses the magnitude of a quantity to a specific degree of accuracy.

Rules for the identification of significant figures:

Digits from 1 to 9 are always significant and have infinite number of significant figures.
All non-zero numbers are always significant. For example: 664, 6.64 and 66.4 all have three significant figures.
All zeros between the integers are always significant. For example: 5018, 5.018 and 50.18 all have four significant figures.
All zeros preceding the first integers are never significant. For example: 0.00058 has two significant figures.
All zeros after the decimal point are always significant. For example: 2.500, 25.00 and 250.0 all have four significant figures.
All zeroes used solely for spacing the decimal point are not significant. For example: 10000 has one significant figure.

Rule applied for addition and subtraction:

The least precise number present after the decimal point determines the number of significant figures in the answer.

Rule applied for multiplication and division:

In case of multiplication and division, the number of significant digits is taken from the value which has least precise significant digits

For A: (6.5-6.10)/3.19

This a a problem of subtraction and division.

First, the subtraction is carried out.

$\Rightarow \frac{6.5-6.10}{3.19}=\frac{0.4}{3.19}$

Here, the least precise number after decimal was 1.

$\Rightarrow \frac{0.4}{3.19}=0.125$

Here, the least precise number of significant digit is 1. So, the answer becomes 0.1

For B: (34.123 + 9.60) / (98.7654 - 9.249)

This a a problem of subtraction, addition and division.

First, the subtraction and addition is carried out.

$\Rightarow \frac{34.123+9.60}{98.7654-9.249}=\frac{43.723}{89.5164}=\frac{43.72}{89.516}$

Here, the least precise number after decimal in addition are 2 and in subtraction are 3

$\Rightarrow \frac{43.72}{89.516}=0.48840$

Here, the least precise number of significant digit are 4. So, the answer becomes 0.4884

6 0

3 years ago

Oxygen is important in the oxidation of glucose because it ____________________________. Oxygen is important in the oxidation of

Vlad [161]

can be oxidized to form carbon dioxide

Explanation:

Oxygen is important in the oxidation of glucose because it can be oxidized to form carbon dioxide. Oxidation of glucose involves the reaction of oxygen with glucose in a process called respiration. This gives a product of water, carbon dioxide and energy which is stored as ATP.

Oxidation involves the addition of oxygen.
Any specie that undergoes oxidation, is a reducing agent and it is said to be oxidized.
Oxygen is oxidized to form carbon dioxide and water.

Learn more:

Respiration and photosynthesis brainly.com/question/3437832

#learnwithBrainly

3 0

3 years ago

_P4 + ____O2 → __P2O3 How do I balance this equation?

Murljashka [212]

Explanation:

please mark me as brainlest

5 0

3 years ago

Read 2 more answers