What is the pH of a 1.0 x 10-4 M solution

4

Explanation:

pH is the negative logarithm of hydrogen ion concentration in a solution. pH can be mathematically expressed as;

pH = -log(H+)

where H+ is the hydrogen ion concentration.

pH = -log(1.0 x 10-4 M)

pH = -(-4)

pH = 4 (The two minus signs cancelled out, so, the result becomes 4)

Thus, the pH of the solution is 4 (indicating an acidic solution)

it would be a gas formation

(newtons first law)

conservation of momentum law states :

momentum before collision = momentum after collision

momentum p (kg-m/s)= mass * velocity

say moving car=1 000 kg, velocity = 10 m/s then p = 1 000*10= 10 000 kg-m/s

say still car = 2 000 kg, velocity = 0 m/s then p = 2 000* 0 = 0 kg-m/s

total momentum prior to collision = 10 000 + 0 = 10 000 kg-m/s

momentum after collision = 10 000 kg-m/s

mass now = 1 000 kg+2 000 kg = 3 000 kg

10 000 = 3 000 kg* velocity m/s

10 000/3 000 = velocity

3.33 m/s = velocity after collision

an impulse is a force applied over time , momentum is exclusive of external forces and a perfect collision is implied