Answer:
<u>The final temperature of both substances at thermal equilibrium is 17.3°C</u>
Explanation:
<u>To calculate the final temperature of both substances at thermal equilibrium -:</u>
First , we calculate the heat of A1 cube as follows -
q= mSΔT
(where q = heat of the cube , m = mass of cube , S= specific heat of cube {0.902j/g°C}, T = Temperature )
Putting the values given in the question ,
°
°
Now , calculate the heat of water -
q=mSΔT
Putting values from the question ,
°
°
=
Now ,
Heat lost by water A1= Heat gained by water [negative sign about heat lost]
°
°
°=
°
= 17.3°C
<u>Therefore , the final temperature of both substances at thermal equilibrium is 17.3°C</u>
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Answer is (3) - metalloid
Elements in group 14 can be classified as non metals, metalloid and metals. Group 14 has C, Si, Ge, Sn and Pb as its elements. C is a non metal. Si and Ge are metalloids while Sn and Pb are metals.
Metalloids are elements which share both non-metallic and metallic characteristics.
The element in group 14, period 3 on the periodic table is Si. Si is a semiconductor means Si can conduct electricity but not good as metals. Conducting electricity ia one of metallic property.
(A)Conductor permits the flow of electrons.
The correct answer is Sulfur (S).
Sulfur has 6 valence electrons because it is located in Group 16 (or the sixth group over if you don’t count the transition metals). This means that one atom of sulfur has 6 electrons in its outermost shell out of 8 total “spots”, which you can count by counting the group numbers (excluding the transition metals) from Group 1 (with one valence electron) to Group 18 (the noble gases with full valence or outer shells).
By this same logic, Carbon (C) has 4 valence electrons and Cesium (Cs) has 1 valence electron, so neither of these is the correct answer.
Hope this helps!
Answer:
physical
Explanation:
if it is asking to determine what it is a sign of or how to identify that characteristic it would be a physical.
