On another planet, the isotopes of titanium have the given natural abundances, Abundance
Isotope
46 Ti
48 Ti
79.200%
14.300%
6.500%
Mass (u)
45.95263
47.94795
49.94479
50 Ti
What is the average atomic mass of titanium on that planet?
average atomic mass =

Which description best characterizes the motion of particles in a solid?

Before it was launched, a helium-filled balloon had a pressure of 201 kpa at a temperature of 27°c. at an altitude of 15,000 m, the pressure had decreased to 2.5 kpa and the temperature had dropped to -14 °c. the volume of the balloon increased to 59.3 m3. what is the original volume of the balloon? 13 m3 0.85 m3 0.077 m3 1.17 m3

Scientists are often interested in knowing the molar heat of combustion – the heat released during the combustion of one mole of a substance. use the periodic table to find molar masses. how many moles of ethanol are present in the sample?