A gas with a pressure of 25.0 psi and a temperature of 18°C is heated to 24°C. What is the new pressure of this gas?

26 psi

Explanation:

Since the question is between pressure and temperature, you use Gay-Lussac's Law: (P1/T1)=(P2/T2) It's saying that the initial pressure divided by the initial temperature is equal to the final pressure divided by the final temperature.

1. Convert C to Kelvin by adding 273: 18+273=291 & 24+273=297

2. Input the numbers into the equation: (25 psi/291 K)=(P2/297 K)

3. Cross multiply 25 and 297: 25*297=7425.0000

4. Divide by 291: 7425/291=25.5155

5. Round to the correct number of sig figs (or however many the equation says to round to): 26 psi

See explanation

Explanation:

On the pH scale acidity ranges from pH values of 0-6.9. Natural rain water is slightly acidic due to the presence of carbon dioxide in the atmosphere which is an anhydride of carbonic acid.

CO2(g) + H2O(l) > H2CO3(aq)

B. The equations that turn sulfur to sulfuric acid are;

S(l) + O2(g) > SO2(g)

2SO2(l) + O2(g) > 2SO3(g)

SO3(g) + H2SO4(l) > H2S2O7(l)

H2S2O7(l) + H2O(l) > 2H2SO4(l)

-

At pH 6, H^+ concentration = 1 * 10^-6 M

At pH 2, H^+ concentration = 1 * 10^-2 M

Hence;

1 * 10^-2/1 * 10^-6

= 10^4 times more acidic