A large group of stars & a dust bound together by gravity

How does energy change when you eat food?

Assume that the enthalpy of fusion of ice is 6020 J/mol and does not vary appreciably over the temperature range 270-290 K. If 1.

The phenolic indicator (In-OH) has approximately the same pKa as a carboxylic acid. Which H is the most acidic proton in In-OH? Circle or otherwise indicate the most acidic proton. Explain why that H is the most acidic proton in In-OH (i. e.

When a solute is added to a solution why does it remain homogeneous?

What is the mass of 2.4 moles of barium nitrate?

Which statement describes the redox reaction that occurs when an object is electroplated? A. It is spontaneous and requires an electric current. B. It is spontaneous and produces an electric current. C.

How are electromagnetic different than all other waves

Find the ratio of speeds of an electron and a negative hydrogen ion (one having an extra electron) accelerated through the same voltage, assuming non-relativistic final speeds. Take the mass of the hydrogen ion to be 1.67*10^{-27} kg.

A type of rock that undergoes changes because of heat and pressure

How many milliliters of a 1.25 molar HCL solution would be needed to react completely with 60 g of calcium metal Ca+2HCl - - > CaCl2 + H2