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bogdanovich [222]
3 years ago
8

What are crystalline solids?

Chemistry
1 answer:
BigorU [14]3 years ago
6 0
The answer to this is B, solids with a repeating atomic pattern.
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Consider the following enthalpy diagram and enthalpies of intermediate and overall chemical reactions.
SashulF [63]

Answer: The overall chemical reaction is exothermic is the correct statement.

Explanation: As seen from the given image, the reactants are at higher energy level and products are at lower energy level and the excess energy is released in the form of heat. These reactions are considered as exothermic reactions.

Hence, the reaction given in the image is an exothermic reaction.

6 0
3 years ago
Read 2 more answers
What is the wavelength of radiation that has a frequency of 7.2×10^11 s−1 ?
Airida [17]

Explanation:

It is known that relation between wavelength and frequency is as follows.

                  \lambda = \frac{c}{\nu}

where,        \lambda = wavelength

                       c = speed of light = 3 \times 10^{8} m/s

                  [/tex]\nu[/tex] = frequency

It is given that frequency is 7.2 \times 10^{11} s^{-1}. Hence, putting this value into the above formula and calculate the wavelength as follows.

                    \lambda = \frac{c}{\nu}

                    \lambda = \frac{3 \times 10^{8} m/s}{7.2 \times 10^{11} s^{-1}}

                             = 0.416 \times 10^{-3} m

or,                         = 4.16 \times 10^{-4} m

Thus, we can conclude that wavelength of given radiation is 4.16 \times 10^{-4} m.

6 0
3 years ago
Each period in the periodic table corresponds to an energy sublevel or the principle energy level?
ELEN [110]
Each period in the periodic table corresponds to a principal energy level
6 0
3 years ago
Why might changes to an environment cause an organism’s population to decrease?
givi [52]
Pollution and people littering. Can change everything.
6 0
2 years ago
If an atom has an atomic number of 6 and and abdomens mass of 12 how many electrons does it have
Basile [38]
Atomic number refers to the proton number of the atom itself. Number of electrons in an atom (an atom that is not reacted with any other molecules / Just the atom alone), is the same as the number of protons, because each electron has 1 negative charge, and each proton 1 positive charge, where they cancel out on each other to become a neutral charge.

So, when atomic number is 6, proton number is also 6, and number of electrons will also be 6 in that atom.

Hope this helps! :)
5 0
3 years ago
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