A. 1 proton and 1 neutron
Description:
<span>"0.0400 mol of H2O2 decomposed into 0.0400 mol of H2O and 0.0200 mol of O2."
This means that a certain amount of H2O2 (0.0400 mol) decomposed or was broken down into two components, 0.04 mol of H2O and 0.02 mol of O2. To examine the system, we need a balanced equation:
H2O2 ---> H2O + 0.5O2
The final concentrations of the system indicates that the system is in equilibrium. </span>
If the number of rats decrease, snakes would look for another prey.
<h3>
Answer:</h3>
Distance traveled is 9.055 km
<h3>
Explanation:</h3>
Speed is given by dividing distance by time.
The distance given is 550 ft and the time is 100 seconds.
Therefore; Speed = 550 ft ÷ 100 sec
= 5.5 ft/sec
We can calculate the distance the runner covered in one and half hour.
Time = 1.5 hours
But 1 hour = 3600 sec
1.5 hours = (1.5 × 3600)
= 5400 sec
Distance is given by multiplying speed and time
Thus; Distance = 5.5 ft/sec × 5400 sec
= 29700 ft
But; 1 m = 3.28 ft
1000 m = 1 km
Therefore; 29700 ft will be equivalent to
= 29700 ft/3.28 ft
= 9054.878 M
but 1000 m = 1 km
Thus, distance = 9054.878 ÷ 1000 m
= 9.055 km
53.14 grams of Zn
will be produced from 26.0 g of Zn and 42.0 g of HCl.
Explanation:
Balanced chemical reaction:
Zn + 2 HCl ⇒ Zn + 
data given:
mass of Zn = 26 grams
mass of HCl = 42 grams
mass of Zn = ?
here in the reaction Zn is the limiting reagent so mass of
Zn formed will be determined by it.
atomic mass of zinc =65.38 grams/mole
number of moles = 
putting the values in the above equation:
number of moles of zinc = 
number of moles of zinc = 0.39 moles
From the balanced reaction it is seen that
1 mole of Zn produced 1 mole of Zn
0.39 moles will produce x moles of Zn
0.39 moles of Zn (atomic mass of Zn = 65.38 grams/mole)
mass = atomic mass x number of moles
= 0.39 x 136.28
= 53.14 grams
53.14 grams of Zn is formed
