Sains KIMIA

1.) 12 gram magnesium di bakar di udara menggunakan oksigen membentuk 20 gram magnesium oksida. hitunglah massa oksigen yang di perlukan......?

2.) Pasa Suhu Dan tekanan tertentu 2p molekull NO2 Bervolume 0,5 L jika pada Suhu dan tekanan yang sama gas CO2 memiliki volume 2L, Hitunglah jumlah Molekul Yang di miliki Gas CO2 .......?

3.) 2L gas oksigen bereaksi dengan 1L gas nitrogen membentuk 2L gas NxOy menurut persamaan reaksi

N2 + 02 --> NxOy

Tentukan rumus kimia dari senyawa tersebut

Merry Christmas and Sweet Dreams Little Kitty

Awwww….Merry Christmas and sweet dreams little kitty. One look and I knew you weren’t dreaming of sugar plums dancing in your head, you had something much more exciting on your mind. There you were, all snuggled up with your stuffed animal and purrrring up a storm. I could almost see the smile forming on your face. I just had to let you sleep. Sweet dreams little kitty, sweet dreams.