A student is using a 12-inch clear plastic tub to model a plant cell wall. Given this model design, which other part could best be included in the model?
A a drop of red food dye, to model mitochondria
B. a basketball, to model the nucleus
C. an 11-inch green plastic tub, to model a chloroplast
D. clear gelatin, to model the cytoplasm

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.

i believe the answer is c. "baking" is the gerund, while "baking blueberry muffins" would be the gerund phrase. hope this ! : )

the role of the microscope world in creating new materials .