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Anika [276]
3 years ago
6

Please answer PLEASE ILL GIVE BRAINLIEST

Chemistry
2 answers:
Natali [406]3 years ago
6 0

Answer:

Hey!

Your answer is C

Explanation:

Plate tectonic movements can cause such changes in the creation and the destruction, (aka melting), of all three rock types. (including IGNEOUS ROCK!)

HOPE THIS HELPS!!

netineya [11]3 years ago
3 0
C ! ..........................
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HCI + NaOH --> NaCl + H 20
Vikki [24]

Answer:

option D is correct

Explanation:

no of moles in 3 grams of HCL=3/36=0.08

if 1 mole of HCL require 1 mole of NaOH then 0.08 moles required 0.08 moles of NaOH

mass of 0.08 moles of NaOH=moles*molar mass=0.08*40=3.2 grams

so 3 grams are required in the reaction

6 0
2 years ago
Which of the following would you except to see in the death of a star that is less than 0.5 solar mass
Ket [755]

B. White Dwarf.

<h3>Explanation</h3>

The star would eventually run out of hydrogen fuel in the core. The core would shrink and heats up. As the temperature in the core increases, some of the helium in the core will undergo the triple-alpha process to produce elements such as Be, C, and O. The triple-alpha process will heat the outer layers of the star and blow them away from the core. This process will take a long time. Meanwhile, a planetary nebula will form.

As the outer layers of gas leave the core and cool down, they become no longer visible. The only thing left is the core of the star. Consider the Chandrasekhar Limit:

Chandrasekhar Limit: 1.4 \;M_\odot.

A star with core mass smaller than the Chandrasekhar Limit will not overcome electron degeneracy and end up as a white dwarf. Most of the outer layer of the star in question here will be blown away already. The core mass of this star will be only a fraction of its 0.5 \;M_\odot, which is much smaller than the Chandrasekhar Limit.

As the star completes the triple alpha process, its core continues to get smaller. Eventually, atoms will get so close that electrons from two nearby atoms will almost run into each other. By Pauli Exclusion Principle, that's not going to happen. Electron degeneracy will exert a strong outward force on the core. It would balance the inward gravitational pull and prevent the star from collapsing any further. The star will not go any smaller. Still, it will gain in temperature and glow on the blue end of the spectrum. It will end up as a white dwarf.

7 0
3 years ago
Chlorine is a toxic, corrosive, reactive gas. Which representation (structural formula, electron dot structure, or three-dimensi
DanielleElmas [232]

electron dot structure

Explanation:

Chemical reactions are driven by transfer or sharing of electrons between two or more atoms. To show a specie that is reactive, a sound knowledge of the distribution of electrons in the atom is necessary.

  • The electron dot structure shows only chemical symbol of the element surrounded by dots which represents the valence electrons.
  • The chemical symbol represents the nucleus and all electrons except the valence ones.
  • The dots arranged on the four sides are called lone pairs. Those that are unpaired are called odd electrons.
  • Chlorine has 7 valence electrons in its outermost shell.
  • It is made up of 3 lone pairs and 1 odd pair of electron.
  • The odd pair accounts for the reason why chlorine is very reactive.
  • It will only require just one electron to join the odd pair so as to complete the octet and be like the noble gases.

Learn more:

lewis dot structure brainly.com/question/5248264

resonance brainly.com/question/6786947

#learnwithBrainly

6 0
3 years ago
How much energy is required to change the temperature of 50g of water from 20 C to 55 C?
bagirrra123 [75]
You beef go have this much energy 60g
6 0
3 years ago
Why is an environmental contingency plan important
Taya2010 [7]
Environmental contingency plan is important to lessen or even prevent casualties or damage to infrastructures when unexpected environmental disasters happen. This is a common management strategy to lessen the costs of the company in the future. More importantly, it is used for safety purposes. 
8 0
3 years ago
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