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
Xelga [282]
3 years ago
10

I need an example of a chemical change involving water.Pleaseeee.

Chemistry
1 answer:
slava [35]3 years ago
7 0
Chemical change occur when two substances are combined and produces a new substance or decomposes into two or more substances which are entirely different from the original two substances.

There are three types of chemical changes. These are 1) Inorganic Changes, 2) Organic Changes, and 3) Biochemical Changes


Here are some examples of chemicsal changes.

If you combine Sodium and Water, chemical changes causes decomposition into Sodium Hydroxide and Hydrogen.

Sodium + Water  ==>  Sodium Hydroxide and Hydrogen

Na + H2O ====>  NaOH and H

Another example of chemical change is:

Carbon Dioxide and Water will decompose into Sugar and Oxygen

Carbon Dioxide + Water ==> Sugar and Oxygen

CO2 + H2O ==> CnH2nOn (where n is between 3 and 7) and O

 
You might be interested in
when 32.4 g of water vapor condenses, how much heat is given off? The heat of vaporization for water is 40.67 kj/mol
egoroff_w [7]
When a water vapor condenses, heat is being released from the process. This heat is called latent heat of vaporization since the phase change happens without any change in the temperature. This value is constant per mole of a substance as a function of pressure and temperature. For this problem, we are given the heat of vaporization at a certain T and P. We use this value to calculate the total heat released from the process. We calculate as follows:

Total heat released: 32.4 g ( 1 mol / 18.02 g ) (40.67 kJ / mol) = 73.12 kJ

Therefore, 73.12 kJ of heat is released from the condensation of 32.4 g of water vapor.
3 0
3 years ago
To measure the speed of a car, we use miles per hour (miles/hour or mi/h or mph). To measure the rate of a reaction we use molar
arsen [322]

Answer:

Part A: 47.8 mi/h

Part B: 0.072 M/s

Part C: 0.144 M/s

Explanation:

Part A

The average speed or velocity (V) is the variation of the space divided by the variation of the time:

V = (241 - 2)/(8 -3)

V = 47.8 mi/h

Part B

As Part A, the average rate (r) of formation of I2 is the variation of the concentration divided by the variation of time:

r = (1.83 - 1.11)/(15 - 5)

r = 0.072 M/s

Part C

The rates of the substances are proportional of their number of moles (n) which are their coefficient, so:

rI2/nI2 = rHCl/nHCl

0.072/1 = rHCl/2

rHCl = 2*0.072

rHCl = 0.144 M/s

7 0
2 years ago
A(n) _____ is the smallest unit of an element that still retains the chemical and physical properties of that element.
Usimov [2.4K]
An atom, I believe.
7 0
3 years ago
Read 2 more answers
Give any two reasons that hydrogen is kept in group 1 in Modern Periodic Table​
xeze [42]

Answer:

Hydrogen is usually classified as a group 1 element since it has one valence electron, just like group 1 metals.

Explanation:

3 0
3 years ago
When aqueous solutions of Li3PO4 and MgSO4 are mixed, Mg3(PO4)2 is a precipitate
Lesechka [4]

Answer:

Li2SO4

Explanation:

Balance the reaction of Li3PO4 + MgSO4 = Li2SO4 + Mg3(PO4)2 using this chemical equation balancer!

8 0
3 years ago
Other questions:
  • Which of the following is not the same as 0.032 liters?
    5·1 answer
  • How many protons and electrons are present in an argon atom?
    15·2 answers
  • Starting from a 1 M stock of NaCl, how will you make 50 ml of 0.15 M NaCl?
    9·1 answer
  • To what category of elements does an element belong if it is a poor conductor of electricity
    10·1 answer
  • When 2.50 grams of copper reacts with oxygen?
    5·1 answer
  • How many molecules are there in a 1.43 mole sample of H2O2?
    13·1 answer
  • Geologic Time Scale
    8·1 answer
  • Calculate the amount of formula units in 2.10 moles of MgCl₂
    5·1 answer
  • Spheres are not perfect in space. But <> is in the cause of their shape. ​
    6·1 answer
  • Match each state of matter to its description.
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!