During the formation of metamorphic rocks, what leads to increased heat? check all that apply.

sun warms rocks.
magma pockets rise.
friction occurs between sliding rocks.
lava at earth’s surface flows over rocks.
rocks beneath earth’s surface are forced toward the mantle.

Explanation:

Magma pockets rise.

Rising magma pockets are the chief heat source that drives contact metamorphism. Hot magma making its way into higher crustal levels raises the temperature of country rocks to a point where metamorphic change is induced.

Friction occurs between sliding rocks.

Frictional sliding of rocks can yield substantial frictional heat for a rock to undergo metamorphic change. As rocks begins to slide into deeper crustal levels, a geothermal gradient is set up and heat from within the earth can lead to change in rock.

magma pockets rise

rocks beneath earth's surface are forced toward the mantle

Explanation:

1.consider the following balanced equation and answer parts a through. show calculations for each part.  

3 ag(s) + 4 hno3(aq) → 3 agno3(aq) + no(g) + 2 h2o(l)  

a. calculate the number of moles of agno3 produced by the reaction of 3 moles of ag with excess hno3. if the number to the left of the compound represents the number of moles of the compound which are present, then 3 moles of ag react with 4 moles hno3 to produce 3 moles agno3 (aq).

so the answer to a would be 3 moles.

b. calculate the number of moles of agno3 produced by the reaction of 108 grams of ag with excess hno3.  

i'm not sure how to plug in the grams of silver into an equation using moles to find how many moles are produced.

c. calculate the number of grams of agno3 produced by the reaction of 108 grams of ag with excess hno3  

d. calculate the number of moles of no produced as a byproduct of the reaction of 108 grams of ag with excess hno3.  

e. calculate the number of grams of no produced as a byproduct starting with 108 grams of ag and excess hno3.  

explanation:

a electronegativity decreases beacuse the size of nucleus is bigger.