(35 + 47 + 42 + x) / 4 = 50
(124 + x) / 4 = 50....multiply both sides by 4, cancelling the 4 on the left side.
124 + x = 50 * 4
124 + x = 200
x = 200 - 124
x = 76 <===
Answer:
d
Step-by-step explanation:
B) 4Na + O₂ → 2Na₂O
b) H₂ + Cl₂ ---> 2HCi
I don’t understand how many grams had the first one,so I can’t help you
