How many moles are represented by 86.5 g of Ca(OH)2?
*please help fast*

Which of the following statements is true about planck’s law

Match each object to its description: a. coma of a comet b. comet tail c. oort cloud haze surrounding a nucleus created by solar wind. hypothetical sphere around the solar system

Using the periodic table, complete the table to describe each atom. type in your answers