Answer:
Plastic is better because it doesn't melt in the microwave but aluminum burns in the microwave
Explanation:
Yes, you add water to Campbell's Chicken Noodle Condensed Soup because "condensed" soup is more concentrated and has less water in it. Adding water will dilute the soup mixture to the desired consistency.
Answer:
+1
Explanation:
Na₂O₂
NOTE: the oxidation number of oxygen is always –2 except in peroxides where it is –1.
Thus, we can obtain the oxidation number of sodium (Na) in Na₂O₂ as illustrated below:
Na₂O₂ = 0 (oxidation number of ground state compound is zero)
2Na + 2O = 0
O = –1
2Na + 2(–1) = 0
2Na – 2 = 0
Collect like terms
2Na = 0 + 2
2Na = 2
Divide both side by 2
Na = 2/2
Na = +1
Thus, the oxidation number of sodium (Na) in Na₂O₂ is +1
Answer:
80.0°C will be the final temperature inside the calorimeter.
Explanation:
Heat lost by the pace of jewelry will be equal to heat gained by the another piece of the jewelry
Mass of piece-1= 
Specific heat capacity of copper= 
= 0.387 J/g.K
Initial temperature of the iron = 
Final temperature = 
=T
Mass of piece-2= 
Specific heat capacity of copper = 
= 0.387 J/g.K
Initial temperature of the water = 
Final temperature of water = =T
(conservation of energy)
On substituting all values:
80.0°C will be the final temperature inside the calorimeter.
B. HE DETERMINED AN ELECTRONS CHARGE
