why is there a danger of explotion in places such as coal mines where there are large quantities of powder, combustibe materials​

In this chemical reaction, 325 grams of barium (ba) react completely. how many moles of lithium (li) are produced?

Which of the following is true about a carbonated soft drink? . the carbon dioxide is the solvent, and water is the solute.. the water is the solution, and carbon dioxide is the solvent.. the carbon dioxide is the solution, and the water is the solvent.. the water is the solvent, and the carbon dioxide is the solute.. .

What are some natural measures of time