1.Stop do lutowania zawiera cynę i ołów w stosunku wagowym 3:1. Ile cyny jest w próbce stopu o masie : a) 28 g , b) 20 g , c) 32g, d)24g, e) 36g.
" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
a)
3x + x = 28g
4x = 28g
x = 7g ołowiu
3x = 21g cyny
b)
3x + x = 20g
4x = 20g
x = 5g ołowiu
3x = 15g cyny
c)
3x + x = 32g
4x = 32g
x = 8g ołowiu
3x = 24g cyny
d)
3x + x = 24g
4x = 24g
x = 6g ołowiu
3x = 18g cyny
e)3x + x = 36g
4x = 36g
x = 9g ołowiu
3x = 27g cyny