Explanation:
mega=10raised to the power 6
kilo=10 raised to the power 3
centi = 10 raised to the power negative 2
Milli = 10 raised to the power negative 3
nano = 10 raised to the power negative 9
pico= 10 raised to the power negative 12
micro = 10 raised to the power negative 6
Answer:
The two blocks have the same temperature
Explanation:
Given;
heat capacity of Aluminum = 0.9 J/g
heat capacity of copper = 0.35 J/g
thermal conductivity of copper = 385 W/(K m)
thermal conductivity of Aluminum = 205 W/(K m)
Based on the given data, it can be concluded that;
- Aluminum’s higher heat capacity means it does not get as hot when energy is shared between the two blocks, so the copper will be hotter
- Copper’s higher thermal conductivity will cause the aluminum to heat up compared to the copper
However, the two metallic blocks (aluminum block and a copper block), were allowed to achieve thermodynamic equilibrium, and as a result they will have the same temperature.
Therefore, the correct statement is "The two blocks have the same temperature".
Modern atomic theory is, of course, a little more involved than Dalton's theory but the essence of Dalton's theory remains valid. Today we know that atoms can be destroyed via nuclear reactions but not by chemical reactions. Also, there are different kinds of atoms (differing by their masses) within an element that are known as "isotopes", but isotopes of an element have the same chemical properties.
Many heretofore unexplained chemical phenomena were quickly explained by Dalton with his theory. Dalton's theory quickly became the theoretical foundation in chemistry.
Answer:
B
Explanation:
A chemical reaction equation is balanced if the number of atoms of each element on the right hand side of the reaction equation is the same as the number of atoms of the same element on the left hand side of the reaction equation.
By inspection, the chemical reaction written in the question is a balanced chemical reaction equation.
However, the statement in option B that more molecules of N2 are needed to produce NH3 than molecules of H2 is a false statement since only one mole of N2 and three moles of H2 are required to produce NH3 according to the reaction equation as written in the question.
