It's the law! Matter cannot be created or destroyed in chemical reactions. This is the law of conservation of mass. In every chemical reaction, the same mass of matter must end up in the products as started in the reactants.

6 0

2 years ago

Balance equation of gas burns carbon dioxide and water

Klio2033 [76]

gas = methane
burn with O₂ (oxygen)

CH₄(g) + 2O₂(g) → CO₂(g) + 2H₂O(l)

4 0

2 years ago

Which word or group of words is represented by the word "period" in the term Periodic Table?

leonid [27]

The correct answer is C : energy level.

As you can see in the image of the periodic table presented below, periods are the horizontal columns of the periodic table.
Elements belonging to the same period have the same electron shell, the same number of orbits filled with electrons.
Elements of the same period have similar chemical and physical characteristics

6 0

3 years ago

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Five gases combined in a gas cylinder have the following partial pressures: 3.00 atm (N2), 1.80 atm (O2), 0.29 atm (Ar), 0.18 at

lisov135 [29]

This can be solved using Dalton's Law of Partial pressures. This law states that the total pressure exerted by a gas mixture is equal to the sum of the partial pressure of each gas in the mixture as if it exist alone in a container. In order to solve, we need the partial pressures of the gases given. Calculations are as follows:

P = 3.00 atm + 1.80 atm + 0.29 atm + 0.18 atm + 0.10 atm

P = 5.37 atm

5 0

2 years ago

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