How many grams of methane, ch4 are produced from the complete reaction of 5.15 moles of carbon monoxide, co

 The grams  of CH4  that is  produced  is  82.4 grams

  calculation

 Co + 3 H₂  → H₂O + CH₄

Step 1  :  Use  the  mole ratio  to  calculate the  moles of CH4

   The    mole  ratio  of  Co:   CH4  is  1:1  therefore the  moles of   CH4  

    =  5.15  moles

step 2 :  use  the mass  of CH4

 mass  =  moles  x  molar mass

  molar mass  of CH4  = 12 +(1 x 4) = 16 g/mol

mass is therefore  =  5.15  moles x  16  g/mol= 82.4  grams

82.4

Explanation:

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.