Answer:
The reactants would appear at a higher energy state than the products.
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3.62x10^24/ 6.02x10^23= 6.013 moles to 3dp
Answer:
Water is a compound. It contains more than one element
water is homogeneous
Answer;
The above statement is true
upon heating a copper sample will expand, leading to a lower density
Explanation;
-The density of solids decreased with increase in temperature and vice versa. The increase in temperature causes the volume of the solid to increase which as a result decreases the density as Density=Mass/Volume. The temperature of a body is the average kinetic energy of the molecules present in it.
In other words; The temperature of a body is the average kinetic energy of the molecules present in it. Therefore; when heat is supplied ( or temperature is increased) the average kinetic energy increases which increases the volume and thus density decreases.
Independent Variable
i hope I've helped!
