What three processes cause fireworks to emit light?

A scientific theory is a statement that describes what scientists expect to happen every time under certain conditions. a) true b) false

A 5L sample of CO2 at 540 torr and 25 degrees celsius expands to 15L at 32 degrees celsius. What is the pressure of the new container?

What is the mass in milligrams of 4.30 moles of sodium? use significant figures?

What kind of particles make up compound

What is the total pressure exerted by the mixture of gases only products or products + reactants?

Plates include large sections of Earth Oceanic or Continental

How many joules of heat are needed to raise the temperature of 1.5 g of aluminum at 45°C, if the specific heat of aluminum is 0.75 J/g°C? Group of answer choices

Which is the best predictor of the radioactive nature of an isotope? (A) the proton-to-electron ratio (B) the neutron-to-proton ratio (C) the neutron-to-electron (D) ratio the electron-to-proton ratio

Which of the following statements correctly describes the relationship between fossils and rock strata? Fossils found in the rock strata are all the very small in size. Fossils are all found only in the top layers of the rock strata.

The trend for ionization energy is a general increase from left to right across a period. However, magnesium (Mg) is found to have a higher first ionization energy value than aluminum (Al).