Hi,
the answer should be the last one, ‘neither accurate nor precise’.
The values are quite different from one another and not close to the actual value.
Hope this helps! If my answer was not clear enough or you’d like further explanation please let me know. Also, English is not my first language, so I’m sorry for any mistake.
Answer:
1. Uniform, non visible
2. Visible, non uniform
3. Uniform, non visible
4. Visible, non uniform
5. Visible, non uniform
Explanation:
A heterogeneous mixture is simply any mixture that is not uniform in composition — it's a non-uniform mixture of smaller constituent parts. By contrast, a mixture that is uniform in composition is a homogenous mixture
visible state of matter is when you can easily difference two components of a mixture
non visible is when the state of the matter in the substance is not visible to the eye, it can't be differentiated
Answer:
26.5°C
Explanation:
Heat added is the product of mass, specific heat capacity, and change in temperature.
q = mC(T − T₀)
25.7 cal = (18.4 g) (0.215 cal/g/°C) (T − 20.0°C)
T = 26.5°C
Usually, the group number of the element would tell you the amount of valence electrons. In an element, their needs to be a full octet in order for it to be stable (aka happy element). Octet means 8 valence electrons in its orbital.