2 years ago

In an investigation, explain the best way to use variables in an experiment

1 answer:

6 0

Answer:

An experiment is an investigation in which a hypothesis is scientifically tested. In an experiment, an independent variable (the cause) is manipulated and the dependent variable (the effect) is measured; any extraneous variables are controlled. An advantage is that experiments should be objective.

Explanation:

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lisov135 [29]

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3 years ago

What is the mass of Ca(NO3)2?

Solnce55 [7]

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3 years ago

A cylinder of oxygen gas contains 2.80 mol of 02. If the volume of the cylinder is 8.58 L, what is the pressure of the 02 if the

Anni [7]

Answer:

pressure of the oxygen gas is 7.88atm

Explanation:

Moles of oxygen in cylinder = 2.80 mol

volume=8.58L

temperature=294K

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The pressure is calculated using ideal gas law:

PV = nRT

making Pressure subject of the formula

P = nRT /V

= 2.80× 0.0821 ×294 /8.58 L

P = 7.88 atm

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3 years ago

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