Which of the following elements can form diatomic molecules held together by triple covalent bonds?

The ratio of elimination to substitution is exactly the same (26% elimination) for 2-bromo-2-methylbutane and 2-iodo-2-methylbutane in 80% ethanol/20% water at 25°C.

When multiplying numbers in scientific notation, what do you do with the exponents?

A sucrose solution is prepared to a final concentration of 0.210 M. Convert this value into terms of g/L, molality, and mass % (molecular weight, MWsucrose = 342.296 g/mol; density, ρsol′n = 1.02 g/mL; mass of water, mwat = 948.1 g).

A 0.050 M aqueous solution of which compound is the best conductor of electric current

A 1.0108 g sample of an unknown nonelectrolyte is dissolved in 10.0090 g of benzophenone and produces a solution that freezes at 35.8 C. If the pure benzophenone melted at 48.1 C, what is the molecular weight of the unknown compound?

Given the propane molecule C3H8 (g) ! a) What is the balanced equation for the combustion of propane in O2? (20 pts.) b) What is the standard enthalpy change ΔH0 for the reaction at 25°C? (20 pts.

Which of the following happens during a chemical change? Check all of the boxes that apply. One atom or more changes into atoms of another element. New substances with different properties are formed. Solids, liquids, or gases may form.

Which has more inertia: a kilogram of cotton balls or a kilogram of gold?

Democritus who lived in greece during the fourth century b. c suggested that matter is made up of tiny particles that cannot be divided. what did he called them

What is the root mean square of carbon iv oxide at 27°C?