An 80.0 g sample of iodine-131 was placed in a sealed vessel forty days ago. Only 2.5 g of this isotope is now left. What is its half-life?

Examples of solid mixtures

Enter a balanced chemical equation for the reaction between potassium metal and liquid water.

Which of the following changes occurs with the greatest increase in entropy?

How many moles of n are in 0.187 g of n2o?

The ksp value for lead (ii chloride is 2.4 * 10?4. what is the molar solubility of lead (ii chloride?

What does the dashes line represent? A. Medium B. Boundary C. Normal D. Incident Ray

Only a small amount of cerium oxide nanoparticles is needed because the nanoparticles ... 1) are elements 2) are very reactive 3) have a high surface area to volume ration

Describe the solubility of water compared to ethanol?

When the free-energy change (AG) of a reaction is negative, the reaction is said to be: Endergonic Non spontaneous Spontaneous Endothermic

The solubility of carbon dioxide gas in water can be increased by