The amount of oxygen in the reactants is 4 atoms. in the products, the oxygen is distributed to water (h2o) and o2 gas. which coefficients would be placed in front of water and oxygen? 2 in front of water and 2 in front of oxygen 1 in front of water and 2 in front of oxygen 1 in front of water and 1 in front of oxygen 2 in front of water and 1 in front of oxygen

Option (d) is the correct answer.

Explanation:

To balance a chemical equation it is necessary that the total number of reactant molecules equal the total number of products.

It is given that amount of oxygen atoms on reactant side is 4.

There is formation of and which means that without balancing the equation, total number of oxygen atoms on product side is 3.

Therefore, to balance the equation multiply by 2 and by 1. Thus, now there will be total 4 atoms on the product side.

Hence, we can conclude that the coefficient 2 should be placed in front of water and 1 in front of oxygen.

explanation:

considering the bohr theory, the type of connection that requires the transfer the answer conuldn't be right

the minimum constant speed at which she can catch the train is 2.7 m/s

given:

acceleration = 0.6

time = 4.5 s

to find:

velocity = ?

formula used:

from 1st kinematic equation we get,

v = u + at

u = initial speed of train = 0 m/s

v = final speed of the train

a = acceleration of the train

t = time

solution:

from 1st kinematic equation we get,

v = u + at

u = initial speed of train = 0 m/s

v = final speed of the train

a = acceleration of the train

t = time

v = 0 + (0.6 × 4.5)

v = 2.7 m/s

the minimum constant speed at which she can catch the train is 2.7 m/s