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LUCKY_DIMON [66]
3 years ago
11

Gerry is looking at salt under a powerful microscope and notices a crystalline structure. What can be known about the salt sampl

e that Gerry is looking at?
Chemistry
2 answers:
Phoenix [80]3 years ago
4 0
Mined salt has sharp edges v s sea salt with rounded edged
mezya [45]3 years ago
3 0

Answer:

It shows that the atoms are vibrating in place.

Explanation:

In the crystal, the molecules exhibit a definite position, and they are combined with each other with the help of electrostatic forces. The molecules exhibit certain kind of energy due to which they vibrate in their locations. However, their energy is not that much high to result in overcoming the strong bonding, unless the atoms in the crystals are irradiated or are heated.

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33 protons 36 electrons 45 neutrons
Artist 52 [7]

As has an atomic number of 33, so it has 33 protons.  

It has a charge of 3-, so there are three more electrons than protons. Thus, there are 36 electrons.  

It has a mass of 75, which is the sum of neutrons and protons.  

33+n=75 ---> n = 75 - 33 = 42 neutrons  

The answer is e) 33 protons, 42 neutrons and 36 electrons.

6 0
3 years ago
An example of a substance that can be decomposed by a chemical change is:
Savatey [412]

The answer is iron..

7 0
4 years ago
Read 2 more answers
If a piece of aluminum with a mass of 3.99 g and a temperature of 100.0 °C is dropped
Vinil7 [7]

Answer:

The final temperature of the system is 27.3°C.

Explanation:

Heat lost by aluminum = 3.99 × 0.91 × (100-T)

                                     = 3.631 (100-T)

Heat gained by water = 10 × 4.184 × (T-21)

                                    = 41.84 (T-21)

As,

                                Heat gained = Heat loss

                          or, 3.631(100-T) = 41.84(T-21)

                          or,363.1 -  3.631 T = 41.84 T - 878.64)

                          or, (41.84+ 3.631) T = 878.64 +363.1

                          or  T= \frac{1241.74}{45.47}

                         or, T = 27.3°C

Hence the final temperature is 27.3°C.

8 0
3 years ago
Which reaction occurs spontaneously
coldgirl [10]

Answer:

Chemical Reaction

Explanation:

5 0
3 years ago
Which group of elements readily loses two electrons to form a compound?
nexus9112 [7]
The alkaline earth metals (the second group) because their ion charge is +2
8 0
3 years ago
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