Enzymes are catalysts in living things, including in the molds and bacteria that cause the spoiling reactions that decompose food. Use your knowledge of reaction rates to explain why food doesn’t rot as fast when it is covered and refrigerated. For full credit identify two different factors and explain how they are slowing down the reaction. I already have that the cold temperature will slow down the reaction, and I'm sure the covering has something to do with it, but I'm not sure what the factor could be. I think my answer has to be one of the factors we learned in class (which are catalyst, concentration, surface area, and temperature).

 Discover ZEISS Solutions

Investigate soft materials like polymers, catalysts, coatings and chemicals to gain a better understanding of their properties. Analyze surface topography, chemical composition, tensile deformation and fracture patterns. Scroll down this page and discover microscopy characterization techniques and solutions from ZEISS enabling you to perform soft materials research in your lab efficiently.

Discover ZEISS Solutions

Investigate soft materials like polymers, catalysts, coatings, and chemicals to gain a better understanding of their properties. Analyze surface topography, chemical composition, tensile deformation, and fracture patterns. Scroll down this page and discover microscopy characterization techniques and solutions from ZEISS enabling you to perform soft materials research in your lab efficiently.

answer by yourhope:

how do models compare to real-world objects?

d. most models represent a real-world object in a simpler way.

: )

assuming that your periodic table has eighteen columns, you should highlight   the four elements in the third column from the left of the table.

neutral atoms of elements after calcium contain d electrons. the energy of d orbitals of a particular main shell lies between the energy of the s and p orbitals of the next main shell. for example, electrons in the have energy higher than those in the orbital while lower than those of the orbital.

by the aufbau principle, electrons fill orbitals one at a time, starting from those of the lowest energy. the orbital is therefore filled right after orbitals and before orbitals.  

potassium has electron configuration and calcium . the s orbital of a main shell holds a maximum of two electrons. the next element would thus have the electron configuration and satisfy the requirements.

a neutral atom of the element contains three electrons on top of the most recent noble gas element. it should thus be placed in the third column of the periodic table. both scandium and yttrium would satisfy the conditions. an aufbau diagram indicates that the 4f orbital is filled before the 5d. however, it appears that exceptions exists for both lanthanum and actinium. neutral atoms of the two d-block elements also demonstrate the and should be highlighted as well.