Answer the questions.
a) Why did Fat's mum put Fat
into the bath tub?
b) Who came first?
c) Why was Fat angry with
Funny and Naughty?
d) How old was Fat?
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2al+fe2o3 - 2fe+al2o3

дано:

m (n) = 5,6 г

найти:

v (n)

решение:

v=m/m

m (n) = 14 г/моль 

v (n) = 5,6/14=0,4 л

ответ: 0,4 л 

посмотри там..выбери

2na+2h2o=2naoh+h2 2naoh+co2=na2co3+h2o na2co3+h2so4=na2so4+co2+h2o na2so4+bacl2=2nacl+baso4 nacl+agno3=nano3+agcl 2nano3 = 2nano2 + o2 380-500° c; примеси na2o, no2 nano3 + 2h = nano2 + h2o nano3 + pb = pbo + nano2 выше 350° c 3nano3 + 4naoh + cr2o3 = 2na2cro4 + 3nano2 + 2h2o 350-400° c

2kclo3 = 2kcl + 3o2

xмоль - 2 моль

2     -   3

n(kclo3)=(2*2)/3=1.33 моль

m(kclo3)=1.33моль *   122,5г/моль=163г