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allochka39001 [22]
3 years ago
6

Observation Use your senses to make an observation about your environment. Questions Create a hypothesis that can be tested in a

n experiment. Remember, a hypothesis has a specific "if then" wording. It describes what will happen to the dependent variable when changes are made to the independent variable. For example, "If a plant is fertilized (independent variable), then it will grow faster (dependent variable)." Design and plan an experiment. Be sure to identify an independent variable, a dependent variable, and any controls. Remember, controls are factors which stay the same. In an experiment designed to test the previously stated hypothesis, one control would be to use the same kind of plant. Write a complete description of your experiment. Include a list of necessary materials. It is a good idea to follow a step-by-step procedure format. Think of everything you need to do, then write it down in the order it must be completed. Your description and procedure should be clear enough that another person could duplicate your experiment exactly.
Chemistry
1 answer:
hichkok12 [17]3 years ago
4 0

Answer:8000

Explanation:926749

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What is a mixture called when it has its different components mixed unevenly within the substance?
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3 years ago
You have 41.6 g of O2 gas in a container with twice the volume as one with CO2 gas in another container. The pressure and temper
prisoha [69]

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The mass of carbon dioxide is 28.6 grams

Explanation:

<u>Step 1:</u> Data given

Mass of O2 = 41.6 grams

Volume of the O2 container = 2V

Volume of the CO2 container = V

Pressure and temperature are the same

<u><em>Step 2:</em></u> Ideal gas law

The ideal gas law = p*V=nRT

For O2: p*2V = n(O2)*R*T

For CO2: p*V = n(CO2)*R*T

n(O2)*R*T / P*2V = n(CO2)*R*T / P*V

Since P, R and T are contstant, we can simplify this to:

n(O2)/2 = n(CO2)

<u>Step 3:</u>  Calculate moles of O2

Moles O2 = mass O2/ Molar mass O2

Moles O2 = 41.6 grams / 32 g/mol

Moles O2 = 1.3 mol O2

The number of moles CO2 = 0.65 mol

Mass of CO2 = Moles CO2 * Molar Mass CO2

Mass of CO2 = 0.65 mol * 44.01 g/mol

Mass of CO2 = 28.6 grams

The mass of carbon dioxide is 28.6 grams

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4 years ago
PLEASE HELP!!!! <br> show work and also balance equation plus stoic
siniylev [52]

Answer:

:)

Explanation:

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3 years ago
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