oblicz w ilu gramach wapna gaszonego znajduje się 20 g wapna
Ca(OH)₂ - wapno gaszone
masa Ca(OH)₂: 40g + 2 * 16g + 2g = 74g
masa Ca: 40g
40g Ca - 74g Ca(OH)₂
20g Ca - x g Ca(OH)₂
x = (20g * 74g) : 40g = 37g
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Ca(OH)₂ - wapno gaszone
masa Ca(OH)₂: 40g + 2 * 16g + 2g = 74g
masa Ca: 40g
40g Ca - 74g Ca(OH)₂
20g Ca - x g Ca(OH)₂
x = (20g * 74g) : 40g = 37g