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4 years ago

(01.01 MC)

2 answers:

8 0

The answer would be option B "I believe there is life on other planets." Scientific statements have a possibility to be wrong. It's not option A because option A is a opinion. It's not option C because option C is a fact. It's not option D because option D is a opinion.

Hope this helps!

OLga [1]4 years ago

5 0

The correct answer is option C, that is, it appears that ants live in colonies.

The statement, that is, pizza is the best-tasting food on Earth is false, as it cannot be tested. The statement, that is, I believe that there is life on other planets is not a scientific statement, as it is just a belief. The statement, that is, I think nuclear energy is bad is also not a scientific statement as it is just an opinion.

The statement, that is, it appears that ants live in colonies is a scientific statement as one can observe and test this.

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Zeke is on spring break. He lives in a cold climate, so he decides to drive to a warmer climate. Before he leaves for his vacati

Pie

D.
This happens because in warmer temperatures, the atoms are more active. This increases the pressure because each atom uses up more space as they become more active.

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3 years ago

A 6.165 gram sample of an organic compound containing C, H and O is analyzed by combustion analysis and 10.27 grams of CO2 and 3

e-lub [12.9K]

Answer:

Explanation:

mass of carbon in 10.27 g of CO₂ = 12 x 10.27 / 44 = 2.80 g

mass of hydrogen ( H ) in 3.363 g of H₂O = 2 x 3.363 / 18

= .373 g

These masses would have come from the sample of 6.165 g .

Rest of 6.165 g of sample is oxygen .

So oxygen in the sample = 6.165 - ( 2.8 + .373 ) = 2.992 g

Ratio of C , H , O in the sample

2.8 : .373 : 2.992

C: H : O : : 2.8 : .373 : 2.992

Ratio of moles

C: H : O : : 2.8/12 : .373/1 : 2.992 / 16

C: H : O : : .2333 : .373 : .187

C: H : O : : .2333/.187 : .373/.187 : .187/.187

C: H : O : : 1.247 : 1.99 : 1

C: H : O : : 5 : 8 : 4 ( after multiplying by 4 )

Hence empirical formula

C₅H₈O₄

Molecular formula ( C₅H₈O₄ )n

n ( 5 x 12 + 8 x 1 + 4 x 16 ) = 132

n x ( 60 + 8 + 64 ) = 132

n = 1

Molecular formula = C₅H₈O₄.

3 0

3 years ago

Which gas would you expect to deviate more from ideality, h2 or hbr? explain your answer. which factor is the major cause for de

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Deviation of ideal gas is mainly due to interaction between the particles itself, the more they interact with each other, the more it deviates.

HBr deviate more from ideality because of the high electronegativity of bromine. an ideal gas has molecules that preform elastic collision , because bromine is solo electro negative, it may begin to attract slight positive charge of hydrogen atom on other molecules. H2 does not have dipole moment so would act like an ideal gas.

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4 years ago

Read 2 more answers

The esophagus is a passageway to what organ?<br> A. lungs<br> B. stomach<br> C. liver<br> D. kidney

Scilla [17]

It is a passage to the stomach.

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4 years ago

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Why must the line of origin be drawn in pencil instead of pen on the chromatography strip?

Kruka [31]

Answer:

Because if you use pen, your chromatography will separate also the colors of the pen and not just your sample.

Explanation:

The pencil since is carbon as simple element, is solid and is not dissolved in solvents like commonly are used in paper chromatography, it will not interrupt the separation of the compounds in your mixture, otherwise, your results will be confuse because you are not sure if the spots that you observe is due to the ink pen or due to the mixture that you want to separate.

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3 years ago