Question

1.1g某钢样在纯氧中完全燃烧，得到0.013g二氧化碳。求此钢样中碳的质量分数。附图

Answer 1

设，钢样品中含有碳是x
C+O2==点燃===CO2
12 44
x 0.013g
12/44=x/0.013g
x=0.003545g
此钢样中碳的质量分数0.003545/1.1*100%=0.32%

Answer 2

设，钢样品中含有碳是x
C+O2==点燃===CO2
12 44
x 0.013g
12/44=x/0.013g
x=0.003545g
此钢样中碳的质量分数0.003545/1.1*100%=0.32%钢样品中含有碳0.32%

Answer 3

C-------CO2
12 44
X 0.013g
12/x=44/0.013 x=0.0035455g
C的质量分数为：0.003545/1.1=0.32%

Answer 4

C + O2 =点燃= CO2
12 44
x 0.013g
12/44=x/0.013g
x=0.003545g
0.003545g/1.1g*100%=0.32%

Answer 5

解 设某钢梓中碳的质量分数为x