All categories

3 years ago

For the following experiments, identify the independent variable and the dependent variable:

Chemistry

1 answer:

faust18 [17]3 years ago

3 0

Answer:

A) IV: number of hours DV: score

Explanation:

Coz,

IV- is the variable that u change

DV- is the variable that u test or measure

In this case, we need to change the hours of studying to see how studying for different hours [1 hr, 2hr, etc (( Independant variable coz we're changing the no. of hours)) ] is going to affect the student's score, and in the end, we are measuring the score of each student [this is the dependant variable].

You might be interested in

What structure helps the earthworm form cocoons

vodka [1.7K]

Go to this website it will help you alot
http://cocoon.org/earthworm-cocoon/
hope it helps
:)

7 0

3 years ago

Which of the following is an example of an attempt to improve an environmental problem caused by chemicals

Leto [7]

what are the answer choices?

5 0

3 years ago

Read 2 more answers

Why are fungi classified together?

mash [69]

Answer:

A, they get their food in the same way.

Explanation:

Some fungi can be toxic or poisonous.

Example: mushrooms. Mushrooms typically are found in forests and meadows/plains.

Some fungi are glowing, brown, and in many forms/shapes.

In conclusion, fungi all get nutrient from the dirt they grew in, forests can be moist which gives fungi excellent places to form, usually around trees, because they can absorb plenty of nutrients from the dirt.

4 0

3 years ago

Without constants you would not know which variable affected the

bonufazy [111]

Two independent variables could change at the same time, and you would not know which variable affected the dependent variable

4 0

3 years ago

Based on this reaction, how many moles of H2 can be obtained starting with 3 mol CH4?

sleet_krkn [62]

Answer:

9 moles of H₂ are produced

Explanation:

Note: The question is incomplete. the complete question and the given image is found below:

The diagram represents a high-temperature reaction between CH4 and H2O. Based on this reaction, how many moles of H2 can be obtained starting with 3 mol CH4?

From the attachment, the equation of the reaction can be written as:

2CH₄ + 2H₂O ----> 2CO + 6H₂

From the equation the reaction shown above, 2 moles of methane, CH₄ reacts with 2 moles of gaseous water or steam, H₂O (since the reaction occurs at a high temperature) to produce six moles of hydrogen gas, H₂.

Therefore, starting with 3 moles of CH₄ and assuming the number of H₂O are equal to or greater than three moles (since the mole ratio of CH₄ to H₂O is 1 : 1 according to the equation of the reaction), number of moles of H₂ that will be produced = 3 * 6/2 moles of H₂

number of moles of H₂ produced = 9 moles

Therefore, 9 moles of H₂ are produced

5 0

3 years ago