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lana [24]
2 years ago
11

Carlos is trying to determine how music affects the growth of bean plants. He hypothesizes that classical music will cause a pla

nt to grow at a higher rate than no music or rap music. He grows nine bean plants in similar lighting, temperature, and soil conditions. Three are exposed to classical music 24 hours a day, three are exposed to rap music 24 hours a day, and three are grown in complete silence. Carlos measures the growth of the plants every day and finds that the plants all seem to have the same rate of growth. What is missing from Carlos's scientific investigation?
A: A specific hypothesis predicting a relationship between independent and dependent variables
B: Controlled variables to ensure only the independent variable is being changed
C: Experimental data collected regularly that can be recorded and analyzed
D: Research on what other scientists have observed and investigated on this topic
Chemistry
1 answer:
lord [1]2 years ago
4 0

Answer:

well what I think is that C is the correct answer

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A stream consisting of 48.9 mole% benzene (B) and 51.1% toluene (T) is fed at a constant rate to a process unit that produces tw
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The vapor flowrate will vary with time by ;  gradually increasing from zero to one half of the molar feed flow rate and then remain constant ( C )

<u>Although the options related to your question is missing attached below are the missing options </u>

<u />

Vapor flow rate is the amount of vapor per unit of time that flows through a specific area at a given time .

Given that the stream consists of 48.9 mole% of benzene and 51.1% toluene fed at a constant rate into a process unit. The vapor flowrate will vary with time because it will gradually increase from zero to 1/2 of the molar feed flow rate before it will remain constant.  

Hence we can conclude that The vapor flowrate will vary with time by  gradually increasing from zero to one half of the molar feed flow rate and then remain constant.

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7 0
2 years ago
A compound has the empirical formula CH2O. If its molar mass is 150 g/mol, what is the molecular formula of the compound?
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The molecular formula is a multiple of the empirical formula. I.e

Molecular formula => [CH2O]n

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8 0
3 years ago
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