1 molar Hydrochloric acid has a theoretical (actual is pretty close too) of 0. The pH is defined as the negative logarithim to base 10 of the Hydrogen ion concentration.
So - log10[1] = 0
Battery acid being stronger than that has a pH of zero (actually slightly negative).
When a substance changes from a liquid to a gas energy is absorbed. When a substance changes from a gas to a liquid energy is released.
Helium is pure as it is on the periodic table.
It depends on what substance the gas is.
If the gas in the test tube is hydrogen, the substance inside would be hydrogen gas since the gas in the tube is hydrogen itself.
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air is a substance because air is a gas and a gas is a substance.
Yes, gas is a pure substance.
When a substance changes from a liquid to a gas energy is absorbed. When a substance changes from a gas to a liquid energy is released.
Helium gas is a pure substance
Helium gas is a pure substance
The substance of Saturn is gas
Helium is pure as it is on the periodic table.
It depends on what substance the gas is.
If the gas in the test tube is hydrogen, the substance inside would be hydrogen gas since the gas in the tube is hydrogen itself.
No, hydrogen gas is a pure substance.
nitrogen gas is BASICALLY JUST PLAIN NITROGEN AND THUS IT IS A PURE SUBSTANCE.
The answer is that the temperature a substance freezes is also its melting point. Water freezes at 0 degrees Celsius into ice and if you heat ice up to 0 degrees Celsius it MELTS to give you water. Evaporation is the change from liquid to gas and condensation is the change from gas to liquid (for water this happens at 100 degrees Celsius).