Acompound made of two elements, iridium (ir) and oxygen (o), was produced in a lab by heating iridium while exposed to air. the following data was collected: mass of crucible: 38.26 g mass of crucible and iridium: 39.52 g mass of crucible and iridium oxide: 39.73 g show, or explain, your calculations as you determine the empirical formula of the compound.

What is the ph of a solution with a 1.50 × 10−9 m hydroxide ion concentration?

During metamorphic processes, increased pressure and temperature can affect the of minerals in rock. rocks subjected to very high pressure are typically than others because mineral grains are squeezed together, and the atoms are more closely packed. during metamorphic processes, water facilitates the transfer of ions between and within minerals, which can the rate at which metamorphic reactions take place. the growth of new minerals within a rock during metamorphism has been estimated to be about per million years. metamorphism is commonly associated with convergent plate boundaries, where two plates move toward each other. during contact metamorphism, a large intrusion will contain thermal energy and will cool much more slowly than a small one. metamorphosed sandstone is known as the metamorphic rock made from metamorphosed shale, was once used to make blackboards for classrooms.

If 3.00 g of titanium metal is reacted with 6.00 g of chlorine gas, cl2, to form 7.7 g of titanium (iv) chloride in a combination reaction, what is the percent yield of the product?