Answer:
Step-by-step explanation:
Y=cos(x+r/2)
Answer:
w = 80
Step-by-step explanation:
Common geometry math
412 + 162 + 347 = 921. Because it is closer to 900 than 1,000, the answer is 900.
Sodium oxide is a simple strongly basic oxide. It is basic because it contains the oxide ion, O2-, which is a very strong base with a high tendency to combine with hydrogen ions. Reaction with water: Sodium oxide reacts exothermically with cold water to produce sodium hydroxide solution