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3 years ago

Research Question: Does the type of gasoline put in a car effect how fast the car can drive?

Chemistry

1 answer:

Jobisdone [24]3 years ago

6 0

Answer:

type of gasoline

Explanation:

Independent variable in an experiment is the variable that the experimenter changes or manipulates in order to bring out a measurable outcome or response.

In this experiment involving how the type of gasoline put in a car affect how fast the car can drive, the independent variable is the TYPE OF GASOLINE because it is what the experimenter changes in order to see it's effect on the speed of the car (dependent variable).

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A chemistry student needs 45.0mL of pentane for an experiment. By consulting the CRC Handbook of Chemistry and Physics, the stud

Masja [62]

The mass of pentane the student should weigh out is

The density of pentane is 0.626 gcm-3

To calculate the mass of pentane following expression is used,

(Density is defined as the mass divide by volume)

Density = mass / volume

mass of pentane = Density of pentane * Volume of pentane

mass of pentane = 0.626 gcm-3 * 45.0 mL

= 28.17 g

Here the unit of mass of pentane is g,

However the unit of density is gcm-3 and unit of volume is mL i.e. cm3

Hence, Mass = gcm-3 * cm3

Mass = g

The mass of pentane the student should weigh out is 28.17g

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1 year ago

3. How can you decrease the pressure of a gas in a container without changing the volume of the gas?

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Answer:

reduce the temperature of the gas

Explanation:

when you reduce the temperature of the gas the pressure will decrease

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3 years ago

DATA:

WITCHER [35]

Answer:

Explanation:

trial 1

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3 years ago

why it was important to use dishwashing gloves over nitrile gloves for distillation experiment and when IR plates are cleaned.

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Answer:

To protect your hands from sharp items and broken glassware and reduce while washing glassware.

Hope this helped! :)

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2 years ago