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Illusion [34]
3 years ago
15

An investigation was done to see if keeping the lights on for different amounts of time each day affected the number of eggs chi

ckens laid.
Biology
1 answer:
sergiy2304 [10]3 years ago
3 0

Answer:

This question is incomplete, the complete part is asking to identify the variables of the experimental statement i.e. dependent and the independent variables.

Independent variable: different amounts of time light is on

Dependent variable: Number of eggs laid by chicken

Explanation:

In a scientific experiment, variables, which are factors that can be altered, are used. These variables are independent and dependent variables.

An independent variable is that variable that is subject to manipulation or control by the experimenter in order to bring about a change in the dependent variable. For this experiment, the independent variable is the DIFFERENT AMOUNT OF TIME LIGHT IS ON.

On the other hand, a variable is said to be dependent if it is the measurable or responding variable. The response of the dependent variable is dependent on the independent variable. In this experiment, the dependent variable is the NUMBER OF EGGS LAID BY CHICKENS. The number of eggs laid (dependent variable) is dependent on the amount of time light is on (independent variable).

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1 year ago
Please I would like some help. Will give brainliest for correct answer.
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Answer

D

Explanation

The conservation of mass principle says that whatever you do to a chemical, the mass of the reactants must equal the mass of the products.

There is a loss somewhere that has not been accounted for.The ribbon and oxygen add up to 6.95 which means that the reactants (oxygen and Magnesium ribbon) added up to more than the mass of the product.

The product was only 6.53 grams. Why that  is so is another matter and how they measured the oxygen is still yet something else.

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C is wrong. They are not equal. The products are a little less than the mass of the reactants added together. They do not differ by much, but they do differ.

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