Answer:
Explanation:
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In this case, when two substances at different temperature are put in contact and an equilibrium temperature is attained, we can evidence that the heat lost by the hot substance (metal) is gained by the cold substance (water) and we can write:
Which can be also written as:
Thus, since we need the specific heat of the metal, we solve for it as shown below:
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Explanation:
10 valence electron are there
Answer:
Oxygen gas
Explanation:
It is a pure element. The rest are compounds made up of two or more elements. For eg silicon dioxide is made of silicon and oxygen.
Answer:
1) Hydrogen Peroxide. Hydrogen Peroxide (H2O2) is a colourless liquid that resembles water in many respects. Its physical properties are very similar to those of water, except that it is 40% denser. ... The single bond between the two oxygen atoms is weak, so that H2O2 readily fragments into either H and HO2 or two OHs.
2) Is human activity warming the Earth or do recent signs of climate change signal natural variations? In this feature article, scientists discuss the vexing ambiguities of our planet's complex and unwieldy climate.
a) The Water Cycle. ... The water cycle describes how water evaporates from the surface of the earth, rises into the atmosphere, cools and condenses into rain or snow in clouds, and falls again to the surface as precipitation.
b) Carbon is an essential element for life on Earth. Every living organism has carbon compounds inside each of its cells, such as fats and proteins. The carbon cycle shows how atoms of carbon can exist within different compounds at different times and be recycled between living organisms and the environment.
Explanation:
Answer: 15
Explanation:
To find the atomic mass, you add the number of protons and neutrons. The number of electrons is the same as the number of protons
