526 L O2 x 1 mol O2 / 22.4 L = 23.5 mol O2
Answer:
idk
Explanation:
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Answer:
95% Copper and 5% Zinc
Explanation:
Easy stuff read in the chemistry book...
Atomic mass Calcium ( Ca) = 40.078 u.m.a
40.078 g --------------- 6.02x10²³ atoms
187 g ------------------- ??
187 x ( 6.02x10²³) / 40.078 =
1.125x10²⁶ / 40.078 = 2.808x10²⁴ atoms
hope this helps!