describe the independent and dependent variables in this experiment then describe the other variables that need to be controlled

1 answer:

3 0

independent variable is being controlled and the dependent variable is being tested and being easured in a scientific experiment

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Anna007 [38]

Explanation: D and G

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3 years ago

What does the atomic numbrr represent on the periodic table?

lesya692 [45]

Answer:

Explanation:

The atomic number tell us the number of protons and neutrons in the nucleus of an atom. in other words ,each element has a unique number that identifies how many protons are in one atom of that element example, all hydrogen atoms, and only hydrogen atoms, contain one proton and have an atomic number of 1.

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The heat of vaporization of water at 100°c is 40.66 kj/mol. Calculate the quantity of heat that is absorbed/released when 9.00 g

timofeeve [1]

Answer:

20.3 kJ of heat is absorbed when 9.00 g of steam condenses to liquid water.

Explanation:

Heat is being consumed during vaporization and heat is being released during condensation.

To vaporize 1 mol of water, 40.66 kJ of heat is being consumed.

Molar mass of water = 18.02 g/mol

Hence, to vaporize 18.02 g of water , 40.66 kJ of heat is being consumed.

So, to vaporize 9.00 g of water, $(\frac{40.66}{18.02}\times 9.00)kJ$ of heat or 20.3 kJ of heat is being consumed