1. A scientific hypothesis can become a theory if ______.A) the entire community accepts it
B) the hypothesis is tested extensively and competing hypothesis are eliminated
C) there are no other competing hypothesis
D) the hypothesis can be tested at least once
2) A preliminary untested explanation that tries to explain how or why things happen in the manner observed is a scientific ________.
A) law
B) theory
C) fact
D) hypothesis

Answers

Answer 1
Answer:

1) The answer is: B) the hypothesis is tested extensively and competing hypothesis are eliminated.

Theory is a tested, unifying explanation for a set of verified facts.  

Theory is a system of explanations that ties together a lot of facts.

Steps of the scientific method:  

1) ask a question about something that is observed.  

2) do background research.  

3) construct a hypothesis, an attempt to answer questions with an explanation that can be tested.  

4) test of hypothesis.  

5) analyze collected data and draw a conclusion.  

2) The answer is: D) hypothesis.

Hypothesis is a suggested explanation for an observable phenomenon.

Experimenters may test and reject several hypotheses before solving the problem.

A working hypothesis is provisionally accepted as a basis for further research.

A law in science is a generalized rule to explain a body of observations in the form of a verbal or mathematical statement.

Answer 2
Answer: 1) - it can become a theory if the hypothesis is tested extensively and competing hypotheses are eliminated - other options are not enough


2) This is a hypothesis. A theory is basically almost an established truth, which can still be changed with new data, but which as far as we know is true.


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Use bond energies to calculate the enthalpy change for the following reaction. H2(g) + CO2(g) ⟶ H2O(g) + CO(g)

please help!!!

Answers

The enthalpy change for the given reaction is 36kJ/mol
Answer is 36kj/mol same question thank you

When the combustion engine was invented it had many positive effects on society years later it has been discovered that the burning of oil and col has one major negative effect on the environment What is that negative effect?

Answers

Answer:

Global warming crisis.

Explanation:

Global warming is the long term rise in the average temperature of the earth's climate system.

If the pH of a solution is 5.3, what is the pOH?
A.5.3
B.4.7
C.8.7
D.9.3

Answers

The correct answer is C) 8.7

What does pH answer mean?

The pH of a solution indicates the acidity or basicity of the answer. A solution is said to be neutral if the pH is 7, if the pH fee is less than 7 then it is acidic in nature and if the pH cost is greater than 7 then the solution is simple in nature.

What does pH stand for?

Ph may appear as it belongs at the periodic desk of factors, however, it's truly a unit of size. The abbreviation pH stands for ability hydrogen, and it tells us how an awful lot hydrogen is in drinks—and the way active the hydrogen ion is.

What's the pH of a solution?

PH is a measure of the attention of H+(aq) ions in an answer. The attention of H+ ions may be stated in mol dm(-three), but the use of the log(10) feature simplifies the numbers concerned. Definition: pH is the terrible logarithm to base 10 of the hydrogen ion awareness in an aqueous solution.

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Jason thinks that global climate change is not happening, because a city in northern Florida received snow one day in January. Which statement explains what is wrong with Jason's reasoning. A) Jason has confused the weather for one day with the climate of a region.

B) Northern Florida would need snow for at least a week for this to be true.

C) The climate of northern Florida would be unaffected since it is already warm in Florida.

D) Jason does not realize that Southern Florida would also need to receive snow to make this true.

Answers

Final answer:

Jason is mistaken in equating a one-time weather event, such as snow in northern Florida, with climate change. Weather is short-term and local, whereas climate represents long-term regional patterns. An isolated weather occurrence does not contradict the extensive evidence of global climate change.

Explanation:

Jason has confused a singular weather event with the overall climate in his reasoning. The correct statement that explains what is wrong with Jason's reasoning is:

A) Jason has confused the weather for one day with the climate of a region.

Weather refers to short-term atmospheric conditions in a specific area, such as a snowy day in northern Florida. Climate, on the other hand, is the average weather in a region over a long period, typically taken over 30 years. A single instance of snow in a typically warm region does not refute the evidence of global climate change. It's the long-term trends and patterns, not isolated incidents, that indicate climate change. Therefore, the occurrence of snow in northern Florida is simply an irregular weather event and not an indicator of the overall climate or a disproof of global climate change.

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Answer: C

Explanation:

What are the two important jobs of photosynthesis

Answers

1. Photosynthesis is important because oxygen is released as a byproduct. We need that oxygen to survive. 

2. Photosynthesis helps get rid of the carbon dioxide in the air. Carbon dioxide, as you may probably know, is necessary for this process to occur.

It converts solar energy into chemical energy that is stored for later use.

Oxygen is created.

What effect does an atibiotic have on an infection like strep throat ?

Answers

Keeps infection from spreading
I think that it kills the virus