How much heat energy (in megajoules) is to convert 7 kilograms of ice at - 9 degrees celcius to water at 0 degrees c

How many moles of potassium iodide, KI, are in 50 grams?

Which synthetic polymer is made into fibers that do not wear out easily? A) Cellulose B) Polyethylene C) Nylon D) Rubber

Iron (2) Chloride reacts with sodium oxide to form ... ?

A 12.34 ml solution with an unknown salt concentration had a mass of 10.25g. when the water was evaporated from the solution 4.78 g of NaCl remained. Calculate the mass-mass percent NaCl concentration in the solution.

A liquid occupies 321ml and has a mass of 376g. what is the density of the liquid?

Which elements are present in sugars?

How does Q compare to Keg? O Q> Keq O Q< Kea OQ = Keg

What is the mass (in grams) of 9.09x10^24 molecules of methanol (CH3OH) ? AND How many moles of N are in 0.183g of N2O?

What are the basic building blocks of matter? A) molecules B) atoms C) electrons D) compounds

How does an atom with too few neutrons relative to protons undergo radioactive decay? * by converting proton to a neutron by converting a neutron to a proton by emitting an alpha particle