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3 years ago

Which step in an investigation involves predicting the results?

Chemistry

1 answer:

Firdavs [7]3 years ago

5 0

Forming a hypothesis

Explanation:

The step in an investigation which involves the prediction of results is the stage of forming of a hypothesis.

A hypothesis is a stage in scientific investigation that follows shortly after asking a simple scientific question.
Hypothesis is simply a scientific guess that is logical in nature.
It presents a problem in a manner in which the problem is stated, the cause and the likely outcome can be predicted.
After a hypothesis formulation, the experiment is conducted and results of findings weighed against the predictions of the statement.

learn more:

Hypothesis brainly.com/question/3418951

#learnwithBrainly

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Where do you write salt and suger why

Rashid [163]

Answer:

here: "salt and sugar"

Explanation:

I dunno, looks pretty, gives 5 points. even tough any context is missing

but seriously:

salt and sugar look the same. just someone with a split personality

7 0

3 years ago

1. The two qualities used to describe winds are________ and speed. 2. a local wing that blows during the day from an ocean towar

Mazyrski [523]

<span>1. The two qualities used to describe winds are direction and speed.
2. a local wind that blows during the day from an ocean toward land is a(n) sea breeze.
3. The increase in cooling that wind can cause is called the wind-chill factor.
4. Temperature differences between the equator and poles produce convection currents.
A movement that is parallel to Earth's Surface is called wind and a local wind is that wind that blows over a short distance.</span>

4 0

3 years ago

I WILL MARK BRAINLIEST How could this sentence be re-written to convey the active voice?

Fed [463]

C is the answer to this question

5 0

3 years ago

Read 2 more answers

Can someone please help me please?

OleMash [197]

I would say the second option

Hope this helps *smiles*

8 0

2 years ago

1 C8H10(l) +21/2O2(g) → 8CO2(g) + 5H2O(g), Hcomb= ? Hf for C8H10(l) = +49.0kJ/mol C8H10(l) Use the balanced combustion reaction

nikklg [1K]

Answer:

$H_{comb}=-4406kJ/mol$

Explanation:

Hello,

In this case, the enthalpy of combustion is understood as the energy released when one mole of fuel, in this case octene, is burned in the presence of oxygen and is computed with the enthalpies of formation of the fuel, carbon dioxide and water as shown below (oxygen is circumvented as it is a pure element):

$H_{comb}=8*\Delta _fH_{CO_2}+5\Delta _fH_{H_2O}-\Delta _fH_{C_8H_{10}}$

Thus, since we already know the enthalpy of combustion of the fuel, for carbon and water we have -393.5 and -241.8 kJ/mol respectively, thereby, the enthalpy of combustion turns out:

$H_{comb}=8*(-393.5kJ/mol)+5(-241.8kJ/mol)-49.0kJ/mol\\\\H_{comb}=-4406kJ/mol$

Best regards.

4 0

3 years ago