Answer:
183.6kg
Explanation:
Given parameters:
Specific heat of the substance = 0.246J/g°C
Change in temperature = 15.5°C
Amount of energy released = 700J
Unknown:
Mass of the sample = ?
Solution:
To solve this problem we used the energy equation:
H = m c Δt
H is the energy released
m is the unknown mass
c is the specific heat
Δt is the change in temperature
Now insert the parameters and find m;
700 = m x 0.246 x 15.5
700 = 3.8m
m = 183.6kg
The molecular formula of the compound that we are required to find is the compound C4H8O8
<h3>What is empirical formula?</h3>
The empirical formula of a compound is a formula that shows the ratio of each atom present in the compound. We will start by dividing each mass with the relative atomic mass of the atom.
Carbon - 48.38 g/12 Hydrogen - 6.74 g/1 Oxygen - 53.5 g/16
Carbon - 4 Hydrogen - 6.74 Oxygen - 8.9
Dividing through by the lowest ratio;
Carbon - 4/4 Hydrogen - 6.74/4 Oxygen 8.9/4
Carbon 1 Hydrogen 2 Oxygen 2
The empirical formula is CH2O2.
To obtain the molecular formula; brainly.com/question/11588623
[12 + 2 + 32]n = 180
n = 180/[12 + 2 + 32]
n =4
The compound C4H8O8
Learn more about empirical formula:
Flashlight or smoke detector have simple dry cell or batteries.
The cell are generally of 6 volts.
In these cells Zn acts as anode and graphite electrode acts as cathode.
A mixture of MnO2 and carbon blacks surrounds the graphite cathode
The electrolyte is ZnCl2 and ammonium chloride. This mixture is used as thick paste.