**Answer:**

- <em>
**If the volume is doubled and the pressure is tripled, **</em><em><u>the temperature changes by a factor of 6.</u></em>

**Explanation:**

Since, for** ideal gases** the temperature is in direct relation to the volume and the pressure, you can predict that if the volume is doubled and the pressure is tripled the effect on the temperature will be **3 × 2 = 6 times**.

You can prove it using the **combined law of gases**:

Where the letters P denote absolute pressures, the letters T denote temperature measured in absolute scale, and the letters V denote volume.

The changes given may be written it this way:

Then, you can write T₂ in terms of the other variables:

- T₂ = (P₂ V₂ T₂) / (P₁ V₁) = 3P₁ 2V₁ T₂ / (P₁V₁)

Cancel the common factors P₁ and V₁

Which proves that the final temperature is **6 times** the initial temperature.

The molarity of solution made by diluting 26.5ml of 6.0ml hno3 to a volume of 250ml is calculated using the following formula

M1V1 = M2V2, where

M1 = molality 1 (6.00m)

V1= volume 1 (26.5 ml)

M2 = molarity 2(?)

v2=volume 2 (250)

M2 = M1V1/V2

M2= 6 x26.5/250 = ** 0.636 M**

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