Answer:
I doint understand that question resend it again
Answer:
253.5 K
Explanation:
Charles law equation, which is as follows is used to solve this question:
V1/T1 = V2/T2
Where;
V1 = initial volume (Litres)
V2 = final volume (Litres)
T1 = initial temperature (K)
T2 = final temperature (K)
According to the numerical information provided in this question:
V1 = 4.0 L
V2 = 3.0 L
T1 = 65°C = 65 + 273 = 338K
T2 = ?
Using V1/T1 = V2/T2
V1T2 = V2T1
T2 = V2 × T1/V1
T2 = 3 × 338/4
T2 = 1014/4
T2 = 253.5 K
Answer:
28869.6J
Explanation:
Given parameters:
Mass of water in flask = 100g
Initial temperature = 21°C
Final temperature = 90°C
Specific heat capacity = 4.184J/g°C
Unknown:
Amount of heat the water absorbed = ?
Solution:
The amount f heat the water absorbed can be determined using the expression below:
H = m x C x Δt
m is the mass
C is the specific heat capacity of water
Δt is the change in temperature
Now insert the parameters and solve;
H = 100 x 4.184 x (90 - 21) = 28869.6J
The compound that has the smallest ions with the greatest charge will have the strongest ionic bonds. On the other hand, large and minimally charged ions will form weaker bonds.
Limiting reagents doesn't present in all reactions.
No. not at all
<u>Explanation:</u>
In any chemical reaction, the reactant which is used first is called as limiting reagent. From a mathematical point of view, there always won't be any limiting reagent. But in the molecular perspective, in a reaction, one of the reactant must used up since we can't count the atoms accurately.
Consequently even if there is an ideal stoichiometric ratio by means of moles mathematically, there may not exist a perfect stoichiometric ratio in terms of molecules probably in molecular view point.