A 1.5L sample of a gas at 150kPa and 250K is changed to STP. What is the new volume?

The new volume is 2.4 L

Explanation:

Combined gas law is the combination of Boyle's law, Charles's law and Gay-Lussac's law.

The combined gas equation is,

where,

= initial pressure of gas = 150 kPa

= final pressure of gas =  101 kPa (at STP)

= initial volume of gas = 1.5 L

= final volume of gas = ?

= initial temperature of gas = 250 K

= final temperature of gas = 273 K ( at STP)

Now put all the given values in the above equation, we get:

Thus the new volume is 2.4 L

in theory, limestone is composed principally of the compound calcium carbonate - caco3, but in reality this compound is deposited in conditions involving a number of other compounds as impurities so it ends up being a mixture of many compounds.

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tony (lordcaos066)

quartz

explanation: