Dry ice (solid co2) has occasionally been used as an "explosive" in mining. a hole is drilled, dry ice and a small amount of gunpowder are placed in the hole, a fuse is added, and the hole is plugged. when lit, the exploding gunpowder rapidly vaporizes the dry ice, building up an immense pressure. assume that 391 g of dry ice is placed in a cavity with a volume of 0.770 l and the ignited gunpowder heats the co2 to 695 ∘c. what is the final pressure inside the hole?

Final pressure = 0.77atm

Explanation:

The concept used to approach this question is the Ideal gas equation

PV = nRT

where P = pressure

V = Volume

n = number of mole or amount of substance

R = ideal gas constant

T = Temperature in Kelvin

plugging into the equation to get the final pressure,

1. a)c-14 has two more protons

2. d)they have different numbers of protons, neutrons, and valence electrons; they are all gases at room temperature.

3. c) iron and nickel.

i wish i could but this one is weird give me abc and i can solve it.