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Eddi Din [679]
2 years ago
13

*GIVING BRAINLIEST* *100 points*

Chemistry
1 answer:
ELEN [110]2 years ago
6 0

Answer:

1. Independent variables: temperature, distance, concentration gradient

Dependent variables: The water and food dye because it is being used to measure the rate of diffusion

2. The tube with a higher temperature would have a higher rate of diffusion than a tube with a lower temperature because introduction of heat helps the particles move farther and faster apart

3. A controlled variable can be the amount of food dye used in each tube so you can record an accurate rate of which the food die gets diffused.

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A testable question is one that _____.
cestrela7 [59]

Answer:

One that “Can be answered by conducting an experiment”

Explanation:

8 0
3 years ago
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How many moles of CH4 are in 148.6 g? Round your answer to two decimal places.
Dafna1 [17]

Answer:

9.29 mol

Explanation:

Given data:

Number of moles = ?

Mass = 148.6 g

Solution:

Number of moles = mass/ molar mass

Molar mass of CH₄ = 16 g/mol

Now we will put the values in formula.

Number of moles = 148.6 g/ 16 g/mol

Number of moles = 9.29 mol

Thus 148.6 g have 9.29 moles.

6 0
2 years ago
WORTH 20 POINTS Confirmation bias is where a scientist may change the data to support a certain bias.
Orlov [11]

Answer:

True

Explanation:

Confirmation Bias is the tendency to look for information that supports, rather than rejects, one’s preconceptions, typically by interpreting evidence to confirm existing beliefs while rejecting or ignoring any conflicting data

8 0
2 years ago
Which of the following is the best definition of a scientific theory?Help me plz
tatiyna
A scientific theory is a well tested explanation of a natural phenomenon.
7 0
3 years ago
Santiago's car has an overall average speed of 25 cm/s. If he could increase his car's overall average speed by 10%, what would
Evgen [1.6K]

Given:

The overall average speed = 25 cm/s.

The overall average speed increased by 10%.

To find:

The new overall average speed.

Solution:

We have,

Overall average speed = 25 cm/s.

The overall average speed increased by 10%. So, the new average speed is

New overall average speed = Initial average speed + 10% of initial  overall average speed

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\text{New overall average speed}=25+2.5

\text{New overall average speed}=27.5

Therefore, the new overall average speed is 27.5 cm/s.

3 0
3 years ago
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