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
oee [108]
2 years ago
5

Which is a example of a chemical reaction A) Melting Ice B) Rusting Iron C) Water evaporating D) Rubbing a water on paper Please

help ASAP
Chemistry
1 answer:
statuscvo [17]2 years ago
6 0

Answer:

C rusting iron

Explanation:

water evaporating and melting is an example of physical change it doesn't change the H2O composition of the atoms, rubbing water on paper doesn't change any atoms or molecules. so the only answer that leaves is rusting iron because when an iron nail comes into contact with water and is then exposed to the air, it rusts, forming a brown-red substance. This process changes the chemical composition of the original substance.

You might be interested in
When describing electromagnetic radiation there is a (n)
maria [59]
Yes there is but what are you asking
6 0
3 years ago
BRAINLIESTTT ASAP!! PLEASE HELP ME :)
VladimirAG [237]

Answer:

Chlorine takes electrons from potassium in the reaction.

Explanation:

2K + Cl₂ ⟶ 2KCl

The KCl is an ionic solid.

It consists of K⁺ and Cl⁻ ions that are formed by the transfer of an electron from K to Cl.

The chlorine takes electrons from potassium, and Gain of Electrons is Reduction.

At the same time, potassium loses electrons to chlorine, and Loss of Electrons is Oxidation.

Both oxidation and reduction are occurring, so this is an oxidation-reduction reaction.

6 0
3 years ago
Pleaseee helpppp
scoray [572]
Going from top to bottom

+ 822 kJ
-2466
+ 411
7 0
3 years ago
Alcohol can damage your liver, esophagus, stomach pancreas and heart.<br> a. TRUE<br> b. FALSE
Firlakuza [10]
True this is so true alcohaul impacts and harms your body but not only physically also mentally.
4 0
3 years ago
Read 2 more answers
an alloy composed of tin, lead, and cadmium is analyzed. the mole ratio of sn:pb is 2.73:1.00, and the mass ratio of pb:cd is 1.
nordsb [41]

This problem is describe the mole-ratio composition of an allow composed by tin, lead and cadmium. Ratios are given as Sn:Pb 2.73:1.00 and Pb:Cd is 1.78:1.00, and we are asked to calculate the mass percent compositon of Pb in the allow.

In this case, according to the given information, it turns out possible realize that the following number of moles are present in the alloy, according to the aforementioned ratios:

2.73mol Sn\\\\1.00molPb\\\\\frac{1.00molPb*1.00molCd}{1.78molPb}= 0.562molCd

Next, we calculate the masses by using each metal's atomic mass:

m_{Sn}=2.73mol*\frac{118.7g}{1mol}=324.05g\\\\ m_{Pb}=1.00mol*\frac{207.2g}{1mol}=207.2g\\\\m_{Cd}=0.562mol*\frac{112.4g}{1mol}=63.2g

Thus, the mass percent composition of each metal is shown below:

\%Sn=\frac{324.05g}{324.05g+207.2g+63.2g} *100\%=54.5\%\\\\\%Pb=\frac{207.2g}{324.05g+207.2g+63.2g} *100\%=34.9\%\\\\\%Cd=\frac{63.2}{324.05g+207.2g+63.2g} *100\%=10.6\%

So that of lead is 34.9 %.

  • brainly.com/question/19168996
  • brainly.com/question/2578569

Learn more:

8 0
3 years ago
Other questions:
  • Mass = 126g volume = 15 cm3 what is the density =
    6·1 answer
  • During which part of the scientific method would error bars be used?
    9·1 answer
  • And Atom of which element has the largest atomic radius
    9·1 answer
  • Please help!! I am struggling with this question
    5·1 answer
  • How can you tell how many elements a compound has
    14·1 answer
  • Janey loves this time of year because she loves eating marshmallow Peeps. One day, she eats ten peeps; 8 of them have a mass of
    6·1 answer
  • Lance Armstrong can ride his bicycle at speeds of 15m/s. If he is traveling at this speed, how long will it take him to travel 8
    14·1 answer
  • Journal making expressing qualitative data and quantitative data.
    9·1 answer
  • What is physical change?​
    12·1 answer
  • Most neutral atoms of argon have an atomic mass of 40 amu and an atomic number of 18. what are these atoms composed of?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!