Consider a block G with mass of 49.231 g and a volume of 23.8 ml what is its density

ρ = 2.07 g/mL

Explanation:

Step 1: Given data

Step 2: Calculate the density (ρ) of the block G

The density is an intrinsic property, equal to the mass of the block divided by its volume.

ρ = m/V

ρ = 49.231 g/23.8 mL

ρ = 2.07 g/mL

The density of the block G is 2.07 g/mL.

b. atoms in metallic solids are not arranged in a regular pattern

explanation:

answer: the enthalpy of the overall chemical reaction is +87.88 kj or +88 kj.

according to hess's law, the overall enthalpy of a reaction is the difference between the sum of enthalpy values of all the products and the sum of enthalpy values of all the reactants.

δh(reaction) = ∑nδh(products) - ∑nδh(reactants)

δh(reaction) = [δh +δh] - [δh]

δh(reaction) = [1(-287.02) + 1(0) ] - [1(-374.9)] kj = +87.88 kj

here, δh (pcl3) = -287.02 kj, δh(cl2) = 0, δh(pcl5) = -374.9 kj

therefore, enthalpy of the overall reaction is +87.88 kj or +88 kj.