How many protons does Thorium have?

a gaseous mixture of O2 and N2 has 22.8% of the pressure exerted by N2. What is the partial pressure of oxygen in the mixture, if the total pressure is 785.0 mmHg?

If i have 5.6 liters of gas in a piston at a pressure of 1.5 atm and compress the gas until its volume is 4.8 L, what will the new pressure inside the piston be?

Which one of the following oxide has both acidic and basic properties? A. MgO B. N2O C. Al2O3 D. SO2

At a certain temperature the vapor pressure of pure thiophene is measured to be. Suppose a solution is prepared by mixing of thiophene and of acetyl bromide. Calculate the partial pressure of thiophene vapor above this solution.

Four substances, HCl (g), I2 (s), HI (g), and Cl2 (g), are mixed in a reaction vessel and allowed to reach equilibrium in the reaction: 2HCl (g) + I2 (s) ⇄ 2HI (g) + Cl2 (g) Which of the following changes will result in an increased amount of HI (g)

How many grams of KCl are produced when 60 grams of K are reacted?

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How do compounds affect an atom's stability

You need to make 10 mL of 2 mg/ml solution of protein and you have 25 mg/mL solution. How much protein solution and water do you need to mix in order to make the required solution?

The definition of volume is? a) width*height b) the space occupied by mass c) the space occupied by a liquid d) the mass of liquid required to fill a container