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3 years ago

PLEASE HELP WILL MARK BRAINLIEST

Chemistry

2 answers:

Lelechka [254]3 years ago

7 0

Answer:

The answer is

Explanation:

Definitions

Observation: is when something catches our attention

Prediction: is a statement about a future event, based upon experience and knowledge

Inference: is a conclusion based on evidence and reasoning.

Hypothesis: is a proposed explanation for a fenomenon

Case I:

It isn't an observation

It isn't a prediction because it happened not will happen

I think is an inference

It isn't a hypothesis, a hypothesis has an specific structure If ... then ...

Case II

I think is a prediction, something that will happen

It isn't an observation he did more than that

It isn't an inference

Hypothesis has an structure.

MAXImum [283]3 years ago

4 0

Answer:

1 is b and 2 is d

Explanation:

because you do not know that the cat had done that you was just thinking it was the cat

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Answer:

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Explanation:

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Answer:

C3 H6 Cl 3

Explanation:

C -24.2%

H - 4.0%

Cl - (100-24.2 - 4.0)=73.8 %

We can take 100g of the substance, then we have

C -24.2 g

H - 4.0 g

Cl - 73.8 g

Find the moles of these elements

C -24.2 g/12.0 g/mol =2.0 mol

H - 4.0 g/1.0 g/mol = 4. 0 mol

Cl - 73.8 g/ 35.5 g/mol = 2.1 mol

Ratio of these elements gives simplest formula of the substance

C : H : Cl = 2 : 4 : 2 = 1 : 2 : 1

CH2Cl

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Real molar mass = 150 g/mol

real molar mass/ Molar mass (CH2Cl) = 150 /49.5=3

So, Real formula should be C3 H6 Cl 3.

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