Answer:
3
Explanation:
metallic oxides are basic in nature.
The answer is (2) 2, because a total of 6 electrons is transferred. We can know the electron transferred number form Mg to Mg2+ ion. There is 3 Mg involved and two electrons per atom. So total is 6,
Answer:
The correct answer is option C.
Explanation:
r = resultant vector
y = vertical component of vector
x = horizontal component of vector
We have :
The vertical component of a vector is 40 N and its horizontal component is 25 N.
x = 25 N
y = 40 N
47.2 N is the magnitude of the vector.
B. <span>The heat lost by the metal will equal the heat gained by the water</span>
From boyles law.
P1v1=P2v2
So,12.3×40=v×60
V= 12.3×40/60
8.2