Answer:
The heat capacity for the sample is 0.913 J/°C
Explanation:
This is the formula for heat capacity that help us to solve this:
Q / (Final T° - Initial T°) = c . m
where m is mass and c, the specific heat of the substance
27.4 J / (80°C - 50°C) = c . 6.2 g
[27.4 J / (80°C - 50°C)] / 6.2 g = c
27.4 J / 30°C . 1/6.2g = c
0.147 J/g°C = c
Therefore, the heat capacity is 0.913 J/°C
In group theory, a branch of mathematics, the term order is used in two unrelated senses:
<span><span>The order of a group is its cardinality, i.e., the number of elements in its set. Also, the order, sometimes period, of an element a of a group is the smallest positive integer m such that <span>am = e</span> (where e denotes the identity element of the group, and am denotes the product of m copies of a). If no such m exists, a is said to have infinite order.</span><span>The ordering relation of a partially or totally ordered group.</span></span>
This article is about the first sense of order.
The order of a group G is denoted by ord(G) or | G | and the order of an element a is denoted by ord(a) or | a |.
Answer:
Molarity of HCl = 0.12 M
Explanation:
Given data:
Volume of HCl = 13.0 mL
Volume of NaOH = 36.11 mL
Molarity of NaOH = 0.045 M
Molarity of HCl = ?
Solution:
Formula:
M₁V₁ = M₂V₂
M₁= Molarity of HCl
V₁ = Volume of HCl
M₂ = Molarity of NaOH
V₂ = Volume of NaOH
M₁ × 13.0 mL = 0.045 M × 36.11 mL
M₁ = 1.62 M.mL / 13.0 mL
M₁ =0.12 M
We are given that the concentration of the KCl is 2 meq /
mL. Assuming that the ampule also has exactly this concentration, therefore:
amount of KCl in ampule = (2 meq / mL) * (20 mL)
amount of KCl in ampule = 40 meq
This amount of KCl is now inside a solution of 1 Liter (also
equivalent to 1000 mL), therefore the new concentration in the resulting
solution is:
new concentration = 40 meq / 1000 mL
new concentration = 0.04 meq / mL
Since 0.04 in decimal is 4% in percentage, therefore the
strength of the resulting solution is 4% KCl.
The reaction for the formation of HI, at the given time, has a reaction quotient of 613.
What is the reaction quotient?
Reaction quotient is the ratio of the concentration of product and reactant raised to the stoichiometric power at a given time interval.
The chemical reaction for the formation of HI is given as:
The reaction quotient is given as:
![\rm Q=\dfrac{[HI]^2}{[H_2]\;[I_2]}](https://tex.z-dn.net/?f=%5Crm%20Q%3D%5Cdfrac%7B%5BHI%5D%5E2%7D%7B%5BH_2%5D%5C%3B%5BI_2%5D%7D)
The concentration of system at the time, t has been:
Hydrogen = 0.1 M
Iodine = 0.2 M
HI = 3.5 M
Substituting the values for reaction quotient:
The reaction quotient for the reaction is 613. Thus, option D is correct.
Learn more about the reaction quotient, here:
brainly.com/question/8205004
