According to the following chemical equation, how many moles of NaCl are needed to completely react with 12.6 moles of MgSO4?
MgSO4 + 2 NaCl → MgCl2 + Na2SO4
Use scratch paper to work out this problem.
A. .159 moles
B. 1470 moles
C. 6.30 moles
D. 25.2 moles

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.

Pl what kind of reaction is this? nahco3 + h2o → co2 + naoh + h2o -composition -decomposition -single replacement -double replacement im leaning more toward single replacement. if im wrong can you explain whyy?

When scientists are ready to publish the results of their experimentation, why is it important for them to include a description of the procedures they used?