Answer: The total energy, in kilojoules, that is needed to turn a 46 g block of ice at -25 degrees C into water vapor at 100 degrees C is 11.787 kJ.
Explanation:
Given: Mass = 46 g
Initial temperature = 
Final temperature = 
Specific heat capacity of ice = 2.05 
Formula used to calculate the energy is as follows.
where,
q = heat energy
m = mass
C = specific heat capacity
= initial temperature
= final temperature
Substitute the values into above formula as follows.
Thus, we can conclude that the total energy, in kilojoules, that is needed to turn a 46 g block of ice at -25 degrees C into water vapor at 100 degrees C is 11.787 kJ.
Answer:
Al: 3
S: 6
Explanation:
Al is in Group III. This means that it has 3 valence electrons.
S is in Group VI. This means that it has 6 valence electrons.
I hope this helps :)
Answer:
B
It defines the concept of conservation of matter.
Explanation:
Answer:
ponge is a solid yet we able to compress it because it has holes in it. When we compress the sponge the air goes out of those pores.
Explanation:
Answer:
The correct answer is : 14, 10, 7, 4, 3, 1
Explanation:
The pH of the solution is a negative logarithm of the hydronium ion's concentrations present in a aqueous solution.The pH scale ranges from 0 to 14.
Mathematically written as:
![pH=-\log[H_3O^+]](https://tex.z-dn.net/?f=pH%3D-%5Clog%5BH_3O%5E%2B%5D)
- Higher the value of pH more alkaline will be the solution.
- Lower the value of pH more acidic will be the solution.
- The solution with pH value 7 is termed as neutral solution.
So, from the given options of pH arranged from most basic to most acidic will be the decreasing order from 14 to 1 :
14, 10, 7, 4, 3, 1
