Classify the following change as physical or chemical: A match lights when struck.

A. Physical change

B. Chemical change

Calculate the grams of oxygen in 90.0 g of cl2o

If 22.5L of nitrogen at 748 mm Hg are compressed to 725 mm Hg at constant temperature. What is the new volume?2. A gas with a volume of 4.0L at a pressure of 205kPa is allowed to expand to a volume of 12.0L.

Which of the following resources is renewable? A. gasoline B. cotton C. oil D. coal

A hydrogen atom requires a minimum energy of 2.18*10^-18 J atom to remove an electron from its ground state level. Determine whether a blueviolet light with a wavelength of 434.0 nm can affect this process.

What is the law of conservation of mass? how is it related to balancing chemical equations

What concentration of so32 - is in equilibrium with ag2so3 (s) and 9.50 * 10-3 m ag? the ksp of ag2so3 can be found here?

Groups or families in the periodic table have what in common

Why is the isotope mass multiplied by the isotopes percent abundance?

Rank the following substances in order from most soluble in water to least soluble in water: ethane, C2H6; 2-butanol, C4H9OH; potassium chloride, KCl; and propane, C3H8.

What information can be learned about the element chlorine (Cl) by looking at the periodic table? Select all that apply. chlorine has 35.45 protons chlorine has 35.45 neutrons chlorine has 17 protons chlorine has 17 electrons