In the lab Karen reacts manganese metal with excess calcium carbonale according to the following reaction: 1 Mn + 2 Caco, 6:1 Mn(CO3)2 + 2 Ca
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15. What type of reaction dld Karen carry out?
a. Synthesis
b. Combustion
C. Single Replacement
16. How many moles of Ca will be produced if 1.23 moles of Caco, are used in the reaction?
a 0.62 mol Ca
b123 mol ca
c. 246 mol ca
17. How many grams of Mn(C0.), will be produced if 0.77 moles
of Caco, are used in the reaction?
a. 67.34 g Mo{C0.),
b. 134 67 g Mn(CO),
c. 189.78 g Mn(CO)

Iknow the answer to 13 is b and 14 is d. i just need to know why the correct answers are correct

Rocks, as they are compressed, begin forming mountains above the earth's surface when two continental plates converge. the continental crust increases in depth as the mountains grow above. the himalayan mountains formed at a convergent plate boundary in this manner. the rocks are smashed together causing them to due to the intense heat and pressure from the colliding plates and eventually forming rock. a) melt; igneous b) layer; sedimentary c) recrystallize; metamorphic d) melt into the earth's interior; metamorphic

Water is initially present in a state where its molecules are far apart. during a change of state, its molecules slow down. which change of state has most likely taken place? from a gas to a liquid from a liquid to a gas from a solid to a liquid from a gas to a plasma