Taking into account the definition of calorimetry, the mass of the sample is 478.41 grams.
Calorimetry is the measurement and calculation of the amounts of heat exchanged by a body or a system.
Sensible heat is defined as the amount of heat that a body absorbs or releases without any changes in its physical state (phase change).
So, the equation that allows to calculate heat exchanges is:
Q = c× m× ΔT
where Q is the heat exchanged by a body of mass m, made up of a specific heat substance c and where ΔT is the temperature variation.
In this case, you know:
- Q= -543 J because the energy is releases
- c= 0.227
- m= ?
- ΔT= Tfinal - Tinitial= 10 C - 15 C= -5 C
Replacing:
-543 J= 0.227 × m× (-5 C)
Solving:
<u><em>m=478.41 grams</em></u>
In summary, the mass of the sample is 478.41 grams.
Learn more about calorimetry:
A moderator or translator to help the new player figure out what’s going on and how to communicate with everyone else. I hope that helps.
Answer: Water
Explanation:
Chemically speaking, a solution has two components: solute and solvent.
The <u>solute</u> is that substance (usually solid, but it can also be liquid or gas) that dissolves in a liquid substance and <u>its proportion in the resulting solution is usually less than the solvent.
</u>
The <u>solvent</u> is the substance used to <u>dissolve the solute, and generally its proportion in the resulting solution is greater.</u> Being the most common used solvent water.
This means that in a solution there is usually more solvent than solute.
So, in the case of the hydrogen peroxide solution, since the proportion is 
to 
, the hydrogen peroxide is the solute and water is the solvent.
Answer:
Deposition
Explanation:
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The mass of 22.4 L of H2O at STP IS 18.0 grams
calculation
mass = moles x molar mas
Calculate the moles of water at STP
At STP 1 mole =22.4 L
what about 22.4 l of H2O
by cross multiplication
1mole x22.4 L/22.4 L = 1 mole
molar mass of water = (1 x2) + 16 =18 g/mol
moles is therefore = 8 g/mol x 1 mol = 18 grams
