Answer: In liquid water, water molecules are moving faster. They are still close together, but they are no longer stuck in a rigid pattern as they are in ice. Water molecules in liquid water are constantly sliding past and bumping into each other; they keep moving from one place to another.
Answer:
978 J
General Formulas and Concepts:
<u>Thermodynamics</u>
Specific Heat Formula: q = mcΔT
- q is heat (in J)
- m is mass (in g)
- c is specific heat (in J/g °C)
- ΔT is change in temperature (in °C)
Explanation:
<u>Step 1: Define</u>
[Given] <em>c</em> = 4.18 J/g K
[Given] <em>m</em> = 6.00 g
[Given] ΔT = 75.0 °C - 36.0 °C = 39.0 °C
[Solve] <em>q</em>
<u>Step 2: Find </u><em><u>q</u></em>
- Substitute in variables [Specific Heat Formula]: q = (6.00 g)(4.18 J/g K)(39.0 °C)
- Multiply [Cancel out units]: q = 978.12 J
<u>Step 3: Check</u>
<em>Follow sig fig rules and round. We are given 3 sig figs.</em>
978.12 J ≈ 978 J
Answer:
126.86
Explanation:
Given parameters:
1x - percent abundance = 80%(0.8), mass = 127
2x - percent abundance = 17%(0.17), mass = 126
3x - percent abundance = 3%(0.03) , mass = 128
Unknown:
Average atomic mass = ?
Solution:
The average atomic mass is the average of all isotopes of element. It can be calculated using the expression below;
RAM = (mass x abundance of 1x) + (mass x abundance of 2x) + (mass x abundance of 3x)
Now insert the parameters and solve;
RAM = (127 x 0.8) + (126 x 0.17) + (128 x 0.03) = 126.86
The metals are elements which have low ionization potential and can lose electrons easily
the other physical characteristics associated with them and hence with Aluminium are
a) they can conduct electricity in molten state, hence It would only conduct electricity if it were melted.
b) It could be stretched into a thin wire. It means it is ductile.
In case of given aluminium metal the correct answer is
it could be stretched to thin wire