What volume of iron (blue/purple line) would have a mass equal to a piece of lead (red line) that has a volume of 3.0 mL? A.
40 mL

B.
40 g

C.
4.9 g

D.
4.9 mL
I NEED HELP PLS

4.3 g

Explanation:

Step 1: Given data

Volume of the piece of Pb: 3.0 mL

Step 2: Calculate the mass of the piece of Pb

The density of Pb is 11.35 g/mL.

3.0 mL × 11.35 g/mL = 34 g

We will look for the volume of a piece of Fe with a mass of 34 g.

Step 3: Calculate the volume of a piece of 34 g of Fe

The density of Fe is 7.87 g/mL.

34 g × 1 mL/7.87 g = 4.3 g

here we have to get the change of moles on decrease the volume of the reaction in gas phase.

the   per the given options it will decrease by (d) 11-50%

we know, on decreasing the volume of the gas phase reaction the reaction moves to the product side.

the reaction:                     so₂cl₂ (g) = so₂ (g) + cl₂ (g)         total

the moles at equilibrium:   1 - α                 α               α           = 1+α

concentrations:                   1 - α               α               α           = 1 + α

(concentration = moles/volume, as volume is 1 l)

(where α is the degree of dissociation)

now the dissociation constant in terms of concentration is :

=  

or,

or,   = (at v = 1l)

the reaction:                     so₂cl₂ (g) = so₂ (g) + cl₂ (g)         total

the moles at equilibrium:   1 - α                 α               α           = 1+α

concentrations:               (1 - α)/0.5           α/0.5         α/0.5       = (1 + α)/0.5

thus, the dissociation constant in terms of concentration is :

or,  

=  

so, the change of 1 : 1/0.5

or, 1: 2

thus it will decrease by 50%.

or, as per the given options it will decrease by 11-50%

answer is: naturally occurring solid, inorganic compound or element is mineral.

minerals usually have crystalline form, that means than crystal constituents (atoms, molecules or ions) are arranged in a highly ordered microscopic structure, forming a crystal lattice that extends in all directions.

for example magnetite is a mineral of iron oxide (fe₂o₃).

calcite is a carbonate mineral and the most stable polymorph of calcium carbonate (caco₃).

dolomite is an   carbonate mineral composed of calcium magnesium carbonate (camg(co₃)₂).