The density of osmium, which is the densest metal, is 22.57 g/cm^3. what is the mass of a block of osmium that measures 1.00 cm x 4.00 cm x 2.50 cm? show your work.

The mass of a block of osmium = 225.7 grams

Density is a quantity derived from the mass and volume

Density is the ratio of mass per unit volume

With the same mass, the volume of objects that have a high density will be smaller than objects with a smaller type of mass

The unit of density can be expressed in g / cm³ or kg / m³

Density formula:

ρ = density

m = mass

v = volume

A common example is the water density of 1 gr / cm³

The beam is a building that has 6 sides and 8 corner points, and is formed from 6 squares

Beam Volume is the multiplication of Length (p), Width (l) and Height (t) of the Beam,

Beam Volume Formulas

A block of osmium that measures 1.00 cm x 4.00 cm x 2.50 cm has the volume:

V = 1 cm x 4 cm x 2.5 cm = 10 cm³

The density of osmium, ρ = 22.57 g / cm³

So the mass of a block of osmium

m = ρ. v

m = 22.57 g / cm³. 10 cm³

m = 225.7 grams

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Keywords: density, mass, volume, a block of osmium

as given the equation is

2al + 6 hcl > 2 alcl3 + 3 h2(g)

as per equation two moles of aluminum reacts with six moles of hcl to give two moles of alcl3 and three moles of hydrogen gas

given: three moles of al are present and 7 moles of hcl

for three moles of aluminum nine moles of hcl will be required

however as 7 moles of hcl are present so the limiting reagent is hcl

hcl is going to decide the number of moles of product formed

when six moles of hcl are present = 3 moles of h2 are formed

when one mole of hcl is present == 3/6 mole sof h2 will be formed

when 7 moles of hcl are present = 3 x 7/ 6 moles of h2 will be formed = 3.5 moles of h2