Which group of elements has a stable number of electrons in their outer energy level?

a. noble gases

c. halogens

b. alkali metals

d. alkaline earth metals?

The specific beta in aluminum is 0,900 J/g • Celsius. How much heat is required to raise the temperature of a 30.0 g block of aluminum from 25 degrees celsius to 75 degrees celsius

The density of a liquid form of a material is always less than the density of the solid form of that same material True False

Is acetone a compound, an element or heterogeneous or homogeneous

Hydrogen bonded to flurorine ionic or metallic

What is the most accurate sight for a firearm?

Suppose there is 0.63 g of HNO3 per 100 mL of a particular solution. What is the concentration of the HNO3 solution in moles per liter?

Of the three thermodynamic quantities, δg, δh, δs, which is most useful for determining spontaneity of a reaction?

Does the density of an object depend on its size? Explain?.

What are two fungal skin infections that humans can contract? pneumonia and ergot disease ergot disease and athlete's foot athlete's foot and ringworm ringworm and pneumonia

A critical biotic factor in Yellowstone National Park is A) geographic isolation B) high elevation C) high temperature in the summer D) population of wolves E) proximity to water