Do the rocks get older or younger as you go away from the Mid Atlantic Ridge towards the continents? Why? EXPLAIN.

The mass of a neutron is equal to the mass of a proton plus the mass of an electron. true or false false true

Find the number of grams of hcl needed to react completely with .50 moles of magnesium.

Suppose a pair of chemical compounds a and b can react in two different ways: a + b -> c reaction 1 gives product c. a + b -> d reaction 2 gives product d. the following facts are known about the two reactions: . reaction 1 is endothermic and reaction 2 is exothermic. if a reaction vessel is charged (filled) with a and b , then at first d is produced faster than c. use these facts to sketch a qualitative reaction energy diagram for both reactions. note: because these sketches are only qualitative, the energies don? t have to be exact. they only have to have the right relationship to each other. for example, if one energy is less than another, that fact should be clear in your sketch.