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Oksanka [162]
3 years ago
13

What is the manipulated variable, responding variable, and controlled Variable

Chemistry
1 answer:
otez555 [7]3 years ago
6 0

Answer:

Manipulated/independent variable- DIFFERENT ELECTROLYTES

Responding/dependent variable- BRIGHTNESS OF BULB

Controlled variable- WET CELL

Explanation:

The independent variable, also known as manipulated variable is the variable that the experimenter changes or manipulates in an experiment. In this case where different electrolytes are observed to see which will light a bulb most brightly, the manipulated variable is the DIFFERENT ELECTROLYTES.

Dependent or responding variable is the variable of an experiment that responds to the changes made to the independent variable. It is the variable that is being measured in an experiment. In this case, the BRIGHTNESS OF BULB is dependent on the electrolyte used, hence, it is the responding variable.

Controlled variable or constant is the variable that the experimenter keeps the same throughout the experiment. In this case, the WET CELL is kept constant for all the electrolytes used i.e. it is not changed, hence, the WET CELL is the controlled variable.

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Significant Figures For 7.06 × 10^5 ÷ 5.3 × 10^-2
Kay [80]

Answer:

\boxed{\text{two}}

Explanation:

In multiplication  and division problems, your answer can have no more significant figures than the number with the fewest significant figures.

\dfrac{7.06 \times 10^{5}}{5.3 \times 10^{-2}}= 1.332 075 472 \times 10^{7} (by my calculator)  

There are three significant figures in 7.06 and two in 2.3.

You must round to \boxed{\textbf{two}} significant figures and report the answer as 1.3 × 1.0⁷.

4 0
3 years ago
Which statement correctly explains whether or not this equation is a balanced equation?
Pavel [41]
The equation is balanced because the reactants are same as its products. so answer is B.
6 0
4 years ago
How much heat energy is needed to heat 250 g of water from 200C to its boiling point and then completely vaporize it?
alexandr1967 [171]

Answer: 40.66kJ/mol.

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Explanation:Assuming that pressure is equal to 1 atm , boiling water at its boiling point implies providing it with enough heat to turn it from liquid at 100∘C to vapor at 100∘

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8 0
3 years ago
The chemical combination of the Atoms of two or more elements is known as a/an
Tatiana [17]
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3 0
4 years ago
7.The following symbol is used to represent the particles in what type of radiation?Select one:a. Alphab. Betac. Gammad. Neutron
laiz [17]

Explanation:

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The symbol is used to represent beta particles.

Answer: b. Beta

5 0
2 years ago
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