Why do people prefer LED lighting?

How do I calculate moles?

Potassium + Fluorine

A closed 5.00 L container is filled with a mixture of 4.00 moles of hydrogen gas, 8.00 moles of oxygen, 12.0 moles of helium, and 6.00 moles of nitrogen. What is the pressure due to the oxygen in this container at a temperature of 25 °C?

Is elephant toothpaste an exothermic or endothermic? How do you know?

6. A chemist needs 457.8 g of KMnO4 to make a solution. How many moles of KMnO4 is that? 7. How many moles of erythromycin (C37H67N013), a widely used antibiotic, are in 1.00 x 10°g of the substance? 8.

The most important reason why solid sodium hydroxide is not used as a primary standard is

plate a and plate b are both continental plates. what is ghe most likely result if the two plates collide?

According to the second law of thermodynamics, the entropy of any system always increases. According to the second law of thermodynamics, the entropy of any system always increases. True False

If the density of Cu is 8.96g/cm cubed, what is the volume of 28kg of Cu?

A piece of iron can change in different ways. How is iron bending different from iron rusting?