1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Andreyy89
3 years ago
10

Pure sodium metal explodes when it makes contact with water. In its natural state, chlorine is a deadly, poisonous gas. When the

se two chemicals combine, they form a harmless, white powder known as sodium chloride or table salt. Which of the following statements does this information support? A. The properties of substances change during chemical reactions but then later go back to their original condition. B. Heat must be added in order to change the chemical properties of substances. C. When substances are chemically combined, the properties of the new substances that are formed are often different from the properties of the original substances. D. When substances are chemically combined, the properties of the new substances that are formed are the same as the properties of the original substances.
I think it's D but I'm not sure
Chemistry
2 answers:
RideAnS [48]3 years ago
8 0

https://do-work-zone.com/?mref=hello69

marin [14]3 years ago
7 0

Answer:  C. When substances are chemically combined, the properties of the new substances that are formed are often different from the properties of the original substances

Explanation: In chemical reactions, the substances combine and undergo rearrangement to form new substances and the new substances formed have different properties than the combing substances.

2Na(s)+Cl_2(g)\rightarrow 2NaCl(s)

In the given chemical reaction, Na in solid state and a reactive metal combines with gaseous and poisonous chlorine but in stable form to give sodium chloride which is salt and is non toxic.

You might be interested in
How is steam different from water vapour
trapecia [35]
Steam is made from boiling things and water vapor is from boiling water.
7 0
2 years ago
Read 2 more answers
Which of the following is not a negative consequence of upward urban growth?
Anestetic [448]

Answer:

D. Waste management issues

Explanation:

Answer A: The five major types of pollution - water pollution, air pollution, land pollution, light pollution, noise pollution - have negative effects on the environment, on human health, and our planet as a whole.

Answer B: Urban Heat Island (UHI) is an urban area that is significantly warmer than its surrounding rural areas due to human activities. UHI decreases air quality.

Answer C: The increased use of surrounding land is the main cause of biodiversity loss.

Answer D: Any field of environmental management help people to solve pollution problems. So, D is the correct answer.

....

Hope this answer can help you. Have a nice day!

8 0
2 years ago
What is the last energy level of N? Mg?
Alexandra [31]

Answer:

2

3

Explanation:

To infer the last energy of the given atoms, we need to write their electronic configuration:

For N = 1S² 2S² 2P³

     Mg  = 1S² 2S² 2P⁶ 3S²  

The energy levels are usually designated as;

   n = 1

   n = 2

   n = 3

   n =4

For N, the last energy level is 2

     Mg, the last energy level is 3

We can also determine this number by the periods the atoms can be found.

3 0
3 years ago
In the relationship between ΔG and K for a given reaction, if ΔG is negative, what is K? K is equal to 0. K is equal to 1. K is
frutty [35]
K is greater than 1. #platolivesmatter
3 0
3 years ago
Read 2 more answers
Which spectroscopic tool would be best for distinguishing a sample of 1,2,2-tribromopropane from 1,1,2-tribromopropane?
12345 [234]

1-H NMR spectroscopy tool will be used for distinguishing a sample of 1,2,2-tribromopropane from 1,1,2-tribromopropane.

The preferred method for determining or validating the structure of organic molecules or those containing protons is H NMR. When compared to other nuclei, a solution-state proton spectrum may be obtained relatively quickly, and it contains a wealth of knowledge regarding a compound's structure.

It can be calculated by simply counting the number of unique hydrogens on one side of the symmetry plane will give you the count of signals individual molecules emit in a 1H NMR spectrum.

Therefore, 1-H NMR spectroscopy tool will be used for distinguishing a sample of 1,2,2-tribromopropane from 1,1,2-tribromopropane.

To know more about 1-H NMR spectroscopy

brainly.com/question/20111886

#SPJ4

5 0
1 year ago
Other questions:
  • The activation energy for the reaction no2(g)+co(g)⟶no(g)+co2(g) is ea = 100 kj/mol and the change in enthalpy for the reaction
    13·1 answer
  • Some people rinse their freshly shampooed hair with diluted lemon juice or vinegar. Why is this done?
    12·1 answer
  • All of the atoms of argon have the same?
    13·2 answers
  • What is the frequency of a wave?
    15·1 answer
  • Which of the following statements reflects the strongest bias?
    13·1 answer
  • Which type of muscle tissue is pictured?<br><br> cardiac<br> skeletal<br> smooth<br> striated
    6·1 answer
  • 1.) Consider the processes or reactions, indicate which side of the reaction will have the greatest entropy AND explain why. (4
    12·1 answer
  • Which statement best describes what happens during a chemical reaction?
    9·1 answer
  • Photosynthesis needs water and carbon dioxide to happen. These 2 ingredients are called _______.
    5·1 answer
  • What structure do bacteria cells have
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!