Answer:
The temperature increase = 23.15 °C.
Explanation:
Given data:
Mass of silver = 27.9 g
Heat added = 155 j
How many degree temperature increase = ?
Solution:
Specific heat capacity:
It is the amount of heat required to raise the temperature of one gram of substance by one degree.
Formula:
Q = m.c. ΔT
Q = amount of heat absorbed or released
m = mass of given substance
c = specific heat capacity of substance
ΔT = change in temperature
Specific heat capacity of silver is = 0.240 j/g.°C
Now we will put the values in formula.
155 j = 27.9 g × 0.240 j/g.°C × ΔT
155 j = 6.696 j/°C × ΔT
ΔT = 155 j /6.696 j/°C
ΔT = 23.15 °C
This is key: remember it's only an ion when it transfers electrons! If it isn't going through the process of the transfer of electrons it's a neutral atom.
b. atomic radius
as it goes increases when it goes down the periodic table, it decreases when going left to right. all the others decrease while going down the table.
if it helps you to remember, everything here besides atomic radius has an e in it. and if you make a connection with it to electrons, they are negative, which means they would decrease going down the table. so e=decrease while going down
thats what helped me remember it, so i hope this technique could help you too.
I believe the correct answer to this question is:
“Mixtures”
By definition, mixtures are combination of substances
which are not really chemically combined and hence separable by physical means.
There are two types of mixtures, homogeneous and heterogeneous, both are also
separable by physical means.
<span>This is as opposed to Compounds which are chemically
bonded and cannot be separated by physical means.</span>
