What type of star has an absolute brightness of 1 and a surface temperature around 7,500 ∞C

Supergiant

Giant

Main sequence

Dwarf

A break in the steel hull of the titanic caused it to leak water and sink. steel it is a combination of iron with many other substance that are evenly mixed together. steel is an example of which type of mixture?

What would the pH of a solution be if the [H+] = 3.00x10-5 moles/liter

How is agriculture and urbanization similar

What is the percent composition of tungsten

Which statement correctly describes an endothermic chemical reaction? (1) The products have higher potential energy than the reactants, and the ΔH is negative. (2) The products have higher potential energy than the reactants, andthe ΔH is positive.

Fish breathe oxygen, o2, dissolved in the water. since water is a polar substance and oxygen is a nonpolar substance, how can there be any oxygen, o2, in the water?

Barium carbonate, baco3, is stable at ambient temperatures, but decomposes to barium oxide and carbon dioxide at higher temperatures.

How do an isotope and a radioactive isotope differ?

What is a cause of polarity in water molecules?

Which is the force of attraction that holds atoms together? A. gravity B. friction C. physical bond D. chemical bond