Atmospheric pressure increases as altitude increases therefore boiling time will need to be extended
Answer:
The internal energy(ΔE) of a substance is calculated below:
From the first law of thermodynamics;
ΔE=q+w
Explanation:
<u>ΔE=q+w</u>
here;
+q=endothermic reaction
-q=exothermic reaction
+w=work done on the system
-w=work done by the system
Given:
q=+1.62kJ=1620J
w=-874J
To solve:
the internal energy(ΔE)
We know:
ΔE=q+w
<em>according to the problem;</em>
ΔE=q-w
since;
w=-874J (i.e.)work is done by the system.
ΔE=1620-874
ΔE=+746J
Therefore the internal energy is +746J
i.e. the option is "c"(+746J)
Sucrose is an example of a non- reducing sugar.
Your welcome :)
Answer:
Here's what I get
Explanation:
A physical property is one you can observe without changing the chemical composition of a substance.
A chemical property is one you can observe only by changing the chemical composition of a substance.
In this problem, examples of physical properties are:
- Colour
- Lustre
- Melting point
- Boiling point
- Density
- Malleability
- Ductility
- Conduction of electricity
Examples of chemical properties are:
- Burning in air
- Reaction with chlorine