Magma/Lava is mainly composed of silica, with some traces of oxygen. :D
Answer:
In longhand notation the electron configuration is
1s² 2s² 2p6 3s¹
In Noble gas configuration
[ Ne ] 3s¹
Hope this helps you.
Answer:
M(NaSO4)=23+32+16*4=119 g/moles
n=200/119=1.68
Explanation:
Explanation:
(a) potassium oxide with water
According to reaction,1 mole of potassium oxide reacts with 1 mole of water to give 1 mole of potassium hydroxide.
(b) diphosphorus trioxide with water
According to reaction,1 mole of diphosphorus trioxide reacts with 2 moles of water to give 2 moles of phosphorus acid.
(c) chromium(III) oxide with dilute hydrochloric acid,
According to reaction,1 mole of chromium(III) oxide reacts with 6 moles of hydrochloric acid to give 2 moles of chromium(III) chloride and 3 moles of water.
(d) selenium dioxide with aqueous potassium hydroxide
According to reaction,1 mole of selenium dioxide reacts with 2 moles of potassium hydroxide to give 1 mole of potassium selenite and 1 mole of water.