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
sergij07 [2.7K]
3 years ago
8

16 Which change results in the formation of different substances?(1) burning of propane

Chemistry
2 answers:
Fofino [41]3 years ago
8 0

Answer:The correct answer is option (1).

Explanation:

Burning of propane in the presence of oxygen will form carbon-dioxide, water and heat.The chemical reaction can represented as in chemical equation:

C_3H_8+5O_2\rightarrow 3CO_2+4H_2O+heat

This is an example of chemical change where new product is formed.

Where as in melting of sold sodium chloride, deposition of carbon-dioxide gas and solidification of water ;phase of the substance is changing that is a physical change is taking place.

Hence, the correct option is (1).

Trava [24]3 years ago
6 0
1. The burning of propane creates different substances: propane and oxygen combine to create water and carbon dioxide:

<span><span>C<span>3</span>H<span>8</span></span> + 5 <span>O<span>2</span></span> becomes 3 CO2 + 4 <span>H<span>2</span>O</span> + heat
</span><span>
2. When NaCl melts, it is changing state, but it is still the same NaCl.

3. When gaseous CO2 deposits it is changing state, but it is still the same CO2.

4. When (presumably liquid) water solidifies, it is changing state, but it is still the same water.

So the answer is 1.</span>
You might be interested in
Which natural polymer makes up paper? A. starch B. nylon C. wool D. rubber
eduard

Answer:

starch

Explanation:

7 0
2 years ago
How many grams of Lioh are in 1.7 moles please help
natali 33 [55]

Answer:

23.94834 gram

Explanation:

4 0
3 years ago
Read 2 more answers
Mendeleev is the scientist who first developed
Schach [20]
Dmitri Mendeleev is the scientist who first developed the periodic table.

He is a Russian chemist and inventor who formulated the periodic law and created the periodic table of elements. He corrected some of the properties of the elements. Now, we can easily locate the elements we wanted to identify. With the help of Mendeleev, studying chemistry is not that difficult because he tried to simplify some of the concept that was complex before.
7 0
2 years ago
How many grams of hydrogen are needed to produce 1.80 g of water
JulsSmile [24]
Your answer is going to be 200g
7 0
3 years ago
Assume an object A with a mass of 66.789 g and a volume of 10.1 mL. what is its density?
docker41 [41]

Answer: 6.61

Explanation:

5 0
3 years ago
Other questions:
  • Find the mass in 2.6 mol of lithium bromide. (Hint:  You need to write the formula)
    8·1 answer
  • Which element's total number of electrons is equal to the number of core
    9·1 answer
  • What forensic technique is seen as reliable? Why is this? what makes this technique more reliable and accurate than other techni
    10·1 answer
  • When combined the two substances together in the cup, the product can be described as a ____ or ____ (there are two possible ans
    9·1 answer
  • What is the net force on an object that has a mass of 10g and the acceleration of 100 m/s2?
    7·1 answer
  • Please help I’ll give 9 points
    12·1 answer
  • A higher amplitude means...?
    14·1 answer
  • Variable changed by the scientists what is being tested
    13·2 answers
  • How does the availibilty of water in various states affect weather ptterns
    12·1 answer
  • Students are investigating the differences in open and closed systems. They heated 2 containers of water. They recorded their re
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!