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Yuliya22 [10]
3 years ago
13

If enough experimental data supports a hypothesis, then it:

Chemistry
2 answers:
ExtremeBDS [4]3 years ago
8 0

Answer:

A. Is accepted as true until proven false.

Explanation:

Hypothesis is an explanation of an observable phenomenon. Hypothesis is falsifiable and testable. A hypothesis is tested independently by different scientists.  When different experiments lead to the same conclusion a hypothesis reaches in the scientific community. However, if new data emerges that proves the hypothesis as incorrect then the hypothesis is rejected.

Dvinal [7]3 years ago
4 0
A. is accepted as true until proven,
 which is what the definition of a hypothesis
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Answer:

The correct answer is option E.

Explanation:

Structures for the reactants and products are given in an aimage ;

Number of double bonds in oxygen gas molecule = 1

Number of double bonds in nitro dioxide gas molecule = 1

Number of single bond in in nitro dioxide gas molecule = 1

Number of triple bonds in nitrogen gas molecule = 1

N_2+2O_2\rightarrow 2NO_2,\Delta H=?

\Delta H=[2 mol\times \Delta H_{f,NO_2}]-[1 mol\times \Delta H_{f,N_2}-2 mol\times \Delta H_{f,O_2}]

\Delta H_{f,NO_2}=33.18 kJ/mol

\Delta H_{f,N_2}=0 (pure element)

\Delta H_{f,O_2}=0 (pure element )

\Delta H=2 mol\times 33.18 kJ/mol=66.36kJ=15.86 kcal

The enthalpy of the given reaction is 15.86 kcal.

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3 years ago
You are given an unknown type of clothing dye. how could you use the procedures in this lab to see if this dye is a mixture?
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One separation technique to be used is the paper chromatography. This works by separating the components of the mixture through the difference of their concentrations. There is a stationary phase and the mobile phase, which flows through the stationary phase. The components travel at different rates and is usually signified by the colors. If more than one color would appear, that means that the dye is a mixture.
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<span>22 million years ago</span>
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Answer:

26.4 960 for the first one

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200 mL

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