Chemistry help please!?

1)A quantity of helium gas has a fixed volume, a pressure of 95 kPa, and a temperature of –25°C. When the temperature is decreased to –100°C, what is the new pressure of the helium gas?

2)If Vo is the original volume, Vnew is the new volume, To is the original Kelvin temperature, and Tnew is the new Kelvin temperature, how is Charles’s law expressed mathematically?

3)Standard pressure is the pressure exerted by a column of mercury exactly how high?

4)A quantity of helium gas has a fixed volume, a pressure of 95 kPa, and a temperature of –25°C. When the temperature is decreased to –100°C, what is the new pressure of the helium gas?

5) All of the following gas laws are direct proportions except which of the following laws?

a) Boyle’s law

b)Charles’s law

c)Gay-Lussac’s law

d)Avogadro’s law

1 Answer

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  • Colin
    Lv 7
    9 years ago
    Favorite Answer

    3) mercury column is 760mm at STP

    Source(s): Rtc
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