- 0.05 L needs to be added to the original 0.12 L solution in order to dilute it from 0.13 M to 0.23 M.
The dilution problem uses the equation :
The initial molarity (concentration) 
0.13 M
The initial volume 
= 0.12 L
The desired molarity (concentration) 
= 0.23 M
The volume of the desired solution 
= ( 0.12 + x L )
Substituting values in above equation;
(0.13 M ) (0.12 L) = (0.23 M ) (0.12 L + x L)
0.0156 M L = 0.0276 M L + 0.23 x M L
- 0.012 M L = 0.23 x M L
x = - 0.05
Therefore, - 0.05 L needs to be added to the original 0.12 L solution in order to dilute it from 0.13 M to 0.23 M.
Learn more about molarity here:
brainly.com/question/26873446
#SPJ4
the balanced equation is:
CH4 +2O2 -> CO2+2H2O
The force exerted on the parked car by the moving car is –30000 N
To solve this question, we'll begin by calculating the deceleration of the moving car. This can be obtained as follow:
Initial velocity (u) = 10 m/s
Final velocity (v) = 0 m/s
Time (t) = 0.5 s
<h3>Deceleration (a) =?</h3>
<h3>a = - 20 m/s</h3>
Finally, we shall determine the force exerted by the moving car on the parked car. This can be obtained as follow:
Mass of moving car (m) = 1500 Kg
Acceleration (a) = - 20 m/s
<h3>Force (F) =.?</h3>
F = ma
F = 1500 × (-20)
<h3>F = -30000 N</h3>
NOTE: The negative sign indicate force is in opposite direction to the parked car.
Therefore, the force exerted on the parked car by the moving car is –30000 N
Learn more: brainly.com/question/15430805
<span>The answer to this question would be: a double replacement reaction
In double replacement reaction or metathesis, the reaction will result in two new compound. The cation from the molecule reaction is switching with the cation from other molecules.
In contrast to the double replacement reaction, in single replacement reaction the molecule made in just one. In this case, the compound is just swapping its molecule with a more reactive one, results in a more stable compound.</span>
b. false
0.01 gram is equivalent to 0.0001 hectogram.
hope this helps!.
