Which substance will require more energy to heat if all the samples have the same mass? A chart with two columns and nine rows.
The first column's header is Substance. The second column's header is Specific Heat J divided by (g times degrees Celsius) First row: Substance—Lead; Specific Heat—0.129. Second Row: Substance—Tin; Specific Heat—0.21. Third row: Substance—Silver; Specific Heat—0.235. Fourth row: Substance—Iron; Specific Heat—0.449. Fifth row: Substance—Calcium; Specific Heat—0.647. Sixth row: Substance—Granite; Specific Heat—0.803. Seventh row: Substance—Aluminum; Specific Heat—0.897. Eighth row: Substance—Magnesium; Specific Heat—1.023. Lead Magnesium Iron Aluminum
Here we have to identify the sample which need more energy to heat the sample 1 degree Celsius.
Among the given elements magnesium will require more energy than the others to heat.
As per the definition of specific heat of a compound, the amount of heat required to increase the temperature of the material 1 degree Celsius is the specific heat of the material.
The given data are-
substance specific heat
Lead 0.129
Tin 0.21
Silver 0.235
Iron 0.449
Calcium 0.647
Granite 0.803
Aluminium 0.897
Magnesium 1.023
From the given data lead, magnesium, iron and aluminium have the specific heat 0.129, 1.023, 0.449 and 0.897 respectively. Thus magnesium will require more energy than the others to heat.
Ammonia and oxygen without catalyst | NH3 + O2 → N2 + H2O. With supply of heat, ammonia reacts with oxygen and produce nitrogen gas and water as products. Nitrogen of ammonia is oxidized to nitrogen gas from -3 oxidation state to 0 oxidation state.
If a new element is discovered and needed to be put into the table of elements, there would have to be a process to find a spot for it. The table is used heavily in chemistry and it revolves around how the elements are placed. So there would have to be a developed spot for the new element.
