Here's the balanced equation for given Double displacement reaction ~
The products fored are : Lead Iodide ( PbI2 ) and Potassium Nitrate ( KNO3 )
How much heat is absorbed by a 26g iron skillet when its temperature rises from 13oC to 26oC?
1 answer:
Answer:- 152.1 J
Solution:- This type of problems are solved by using the formula:
where, q is the heat energy, m is the mass, c is specific heat and is change in temperature.
mass of iron is given as 26 g. temperature is changing from 13 degree C to 26 degree C.
So, = 26 - 13 = 13 degree C
specific heat for iron is 0.450 Joule per gram per degree C.
let's plug in the values in the formula and do calculations for q.
q = 152.1 J
So, 152.1 J of heat is absorbed by the iron skillet.
You might be interested in
The electronic configuration of x, y, and z.
Electronic configuration, also called electronic structure, is the arrangement of electrons in energy levels around an atomic nucleus.
a.
b.
x= Period 1 and group18
Y=Element is in period 3 and Group 2
Z=Element is in period 3 and group 17.
c.
X, Y & Z represents Helium, magnesium, and chlorine.
Learn more about the electronic configuration here:
#SPJ1
Answer: It will take 8.2 minutes until the concentration decreases to 0.055 M
Explanation:
The time after which 99.9% reactions gets completed is 40 minutes
Explanation:
Expression for rate law for first order kinetics is given by:
where,
k = rate constant
t = age of sample
a = let initial amount of the reactant
a - x = amount left after decay process
a) for completion of half life:
Half life is the amount of time taken by a radioactive material to decay to half of its original value.
b) Time taken for 0.085 M to decrease to 0.055 M
Thus it will take 8.2 minutes until the concentration decreases to 0.055 M