Calculate the co, emissions from the combustion of a kilogram of (a) methane and (b) diesel to verify the numbers in table 1.1. problem 1.3 the 2014 ford focus bev with a 24 kwh battery pack has upstream emissions of 68 gco, km in los angeles, 162 gco, km in detroit, and 118 gco,/km as an average in the usa. the gasoline 2.0 l'automatic 2014 ford focus has upstream emissions of 221 gco/km. how many kilometers must be driven for an electric ford focus to result in lower carbon emissions than the gasoline ford focus in (a) los angeles, (b) detroit, and (c) the usa, if the cradle-to-grave emissions of co, for the electric car and gasoline car are 10,300 kg and 7,500 kg, respectively. if each car is driven for the usa annual average of 21,700 km per year over 8 years, determine the combined total for the cradle-grave and tailpipe and upstream emissions for the three locations using electric and gasoline. norway has electricity emissions of about 50 times less than the usa, or about 2.5 gco,/km. what are the combined cradle-grave and upstream emissions if the bev is driven in norway for 21700 km per year over 8 years a representative hev has cradle-to-grave emissions of 7,500 kg and total emissions of 118 gco2/km. determine the combined total for the cradle- to-grave and tailpipe and upstream emissions for the various locations us ing the electric, hybrid and gasoline vehicles when driving 12,000 km per year over eight years.

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.

the density of gold = 19.3 g/cm3

the relation between density and mass and volume is

density = mass / volume

given :

mass of gold = 13 g

density = 13g / volume = 19.3

volume = 13 /19.3 = 0.67 cm^3

thus volume of gold nugget = 0.67 cm^3

explanation: