HELP!! How many moles of hydrogen gas will be produced if you start with 2.5 moles of magnesium and an excess of hydrochloric acid given the following balanced chemical reaction:
Mg+2HCl -> MgCl2+H2

A. 2.5 moles
B. 1.25 moles
C. 7.5 moles
D. 5.0 moles

Freezing and boiling are endothermic processes. this means that these processes absorb energy from their surroundings in order to occur. use this information and the data you collected in the phase change gizmo to describe what happens to the temperature of water when you boil it, then explain why this result occurs.

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Can someone me with 6 to 10 plz this is for masteries test.