What is the edge length of a 305-g iron cube? (The density of iron is 7.86 g/cm3g/cm3, and the volume of a cube is equal to the edge length cubed.

edge length = 3.61 cm

Explanation:

Givens

m = 369 gm

d = 7.86 gm / cm^3

v = ?

Formula

v = m / d

Solution

v = 369 / 7.86

v = 46.95 cm^3

That's not the answer. You must take the cube root of the volume

side = cube root (46.95)

side = 3.61 cm

answer: the value of enthalpy change will be -152.80 kj.

solution:

pressure = 1atm , temperature = = 298 k

given that pressure and temperature are same in both gases , the number of moles of both gases can be determined by the ideal gas equation.

according to reaction 3 moles no are reacting with 1 mol of ,then 0.49 mol of no will react with moles of ozone that is 0.16 moles of ozone. since, no is limiting reagent and is an excessive reagent.

enthalpy change for the reaction between the given volumes of the gases is :

oxygen, selenium, tellurium, and polonium.

they're all from the same group as sulfur (group 16).