How many moles of argon are equal to 3.01*1023 atoms

Why do the spectra of the molecular species show broader bands compared to atomic spectra such as that seen for the hydrogen atom?

Which of these is a weekly foliated rock that is made up of bands of defferent minerals A) slate B) phyllite C) schist D) gneiss

When electricity is applied to water, water (H2O) will undergo a decomposition reaction to form hydrogen gas and oxygen gas. True False

What is osmosis as a scientific term

Element X reacts with chlorine to form an ionic compound that has a formula of XCl2. To which group could element X belong? (1) Group 1 (2) Group 2 (3) Group 13 (4) Group 15

An insulator: A. Conducts heat well B. Does not conduct heat well C. Is used to heat cold objects D. Is used to cool hot objects

Which of the following choices would have a negative entropy change? A. N2 (g) + 3H2 (g) - >2NH3 (g) B. CaCO3 (s) - > CaO (s) + CO2 (g) C. H2O (s) - > H2O (l) D. Fe2O3 (s) + 3C (s) - > 2Fe (s) + 300 (g)

Increasing the temperature of a liquid-solid solution will:

What is the most abundant substance dissolved in sea water? magnesium chloride sodium chloride

Problem 5.32 - enhanced - with feedback the rolling resistance for steel on steel is quite low; the coefficient of rolling friction is typically μr=0.002. suppose a 180,000 kg locomotive is rolling at 22 m/s on level rails.