Independent variable: weather condition
dependent variable: sales of lemonade drink
controlled variable: the lemonade drink mixture.
Explanation:
From the description of the problem, the independent variable is the weather condition whereas the sales of lemonade drink is the dependent variable.
A dependent variable is one in which relies on the outcome of another variable. The independent variable does not rely on other variable. It is usually the cause in an experiment.
- The weather condition is an independent variable. Maria and Jane are simply trying to project their sales(dependent variable) on the condition of the weather.
- A control is that variable that does not have effect on the experiment. It is usually not the subject of an investigation and has no effect on the outcome. The Lemonade mix of lemon, sugar and water has no effect.
Learn more:
statistics:brainly.com/question/9004850
#learnwithBrainly
Answer:
11.442E23molecules
Explanation:
Given data:
Number of moles of water = 1.9 mol
Number of molecules of water = ?
Solution:
The given problem will solve by using Avogadro number.
It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance.
The number 6.022 × 10²³ is called Avogadro number.
For example,
18 g of water = 1 mole = 6.022 × 10²³ molecules of water
In 1.9 moles:
1.9 mol × 6.022 × 10²³ molecules / 1 mol
11.442 × 10²³ molecules
In e notation:
11.442E23 molecules
The answer is B because none of the other options are true.
Answer:
i think it is the last option a pure substance that can be separated into different elements by chemical means
Explanation:
