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
9966 [12]
2 years ago
7

tate whether the following changes are physical or chemical for rancidipication fixation of water 2 tearing of paper 3 rusting o

f iron 4 electrolysis of water​
Chemistry
1 answer:
damaskus [11]2 years ago
3 0

Answer: Physical change : tearing of paper, fixing of wtaer

Chemical change:  rusting of iron ,  electrolysis of water​, Rancidification

Explanation:

Physical change is a change in which there is no rearrangement of atoms and thus no new substance is formed. There is only change in physical state of the substance.

Example:  tearing of paper, fixing of wtaer

Chemical change is a change in which there is rearrangement of atoms and thus new substance is formed. There may or may not be a change in physical state.

Example: rusting of iron ,  electrolysis of water​, Rancidification

You might be interested in
from the balanced equation we see that h20 is 1 to 1 mole ratio the number of moles of acid and base. What is the number of mole
forsale [732]

Answer:

0.0498 mol

Explanation:

Number of moles = concentration in mol/L × volume in L

Concentration = 1 M = 1 mol/L

Volume = 49.8 mL = 49.8/1000 = 0.0498 L

Number of moles = 1×0.0498 = 0.0498 mol

5 0
3 years ago
A non metal which is good conductor of electricity
Neporo4naja [7]
The non metals good conductivity any to conduct electric city any time because the metals when we keep into any switch board while we touch we will get shock but non metals not like that
7 0
3 years ago
Read 2 more answers
A student with an unknown code of Q3A conducts a qualitative analysis of her unknown. Her results indicated the formation of a y
insens350 [35]

Answer:

Grey precipitate implies the presence of silver ions

Yellow precipitate implies the presence of lead II ions

Explanation:

Qualitative analysis provides us a quick method of identifying ions present in a sample by chemical reactions involving simple reagents. Precipitates having a unique colour is formed. The identity of ions in the sample is deduced from the colour of precipitate obtained when particular reagents are added.

In the question, a precipitate containing silver ions upon standing turn into grey colour. Similarly, lead II ions give a yellow precipitate.

6 0
2 years ago
Balance :FeCl3 + __Ca(OH)2 → ___ Fe(OH)3 + __ CaCl2
ArbitrLikvidat [17]
Your answer is 2:3:2:3
7 0
3 years ago
How many moles of mercury(II) oxide, HgO, are needed to produce 125 g of oxygen, O2? How many moles of mercury is produced?​
iren2701 [21]

Answer: 7.81 mol HgO (How many moles of mercury(II) oxide, HgO, are needed to produce 125 g of oxygen, O2?)

Explanation:

7 0
2 years ago
Other questions:
  • Which of the following is a n o n i n f e c t i o u s disease that affects the respiratory system a influenza b cold c asthma d
    9·1 answer
  • how was it possible that Mendeleev was able to predict the properties of elements that no one knew about
    12·1 answer
  • There are many different types of maps a map that shows the types of rocks or the age of rocks in an area is called a
    5·1 answer
  • The empirical formula for a compound is CH2. If n is a whole number, which shows a correct relationship between the molecular fo
    14·1 answer
  • How many atoms of hydrogen are in hydroxide molecule?
    10·1 answer
  • What is the number of moles of gas contained in a 3 L vessel at 300 K with a pressure of 1.50 atm? (Given: R = 0.08205 L∙atm/mol
    12·1 answer
  • In nature, oxygen has three common isotopes. The atomic masses and relative abundances of these isotopes are given in the table
    10·1 answer
  • In an endothermic reaction would energy be considered a reactant or a product?
    10·1 answer
  • At standard temperature and pressure, 1 mole of gas has what volume? A. 2.4 liters B. 22.4 liters C. 42.4 liters D. 76.6 liters
    15·1 answer
  • What is the mass of 9.4 moles of B2(Cr207)3?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!