Answer:
0.478 J/g/C
Explanation:
When solving questions on heat energy, we can use the formula
Q = mcT where
Q is the amount of energy supplied in Joules
m is the mass of the object in Grams
c is the specific heat capacity of the metal in Joules Per Gram Per Degree Celcius
T is the <em>c</em><em>h</em><em>a</em><em>n</em><em>g</em><em>e</em><em> </em>in Temperature in Degree Celcius.
So by applying the formula to this question, we get:
15000 = (950)(c)(78 -45)
c = <u>0.478 J/g/C</u>
Answer:
The answer you're looking for is B.C (6,3)
Hope this helps :)
It is called a physical change. It is reversible and doesn't affect the chemical make-up.
Answer:
In a classroom, the comparison that a teacher would most likely use for describing a mole is: jar of jellybeans and a gram of salt crystals.
Explanation:
Answer:
-
419kJ/mol
- 5,0,0,+12
- That catches fire spontaneously
Explanation:
1. Topic: Chemistry
ElementFirst Ionization Energy (kJ/mol) Lithium520Sodium496Rubidium403Cesium376According to the above table, which is most likely to be the first ionization energy for potassium?
2. Topic: Chemistry, Atom
The correct set of four quantum numbers for the valence electrons of the rubidium atom (Z=37) is:
3. Rubidium and cesium are pyrophoric. Here the term pyrophoric means:
- That does not catch fire at all
- That catches fire spontaneously
