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Harman [31]
3 years ago
6

Is steam a element compound, heterogeneous, mixture ,or solution?

Chemistry
1 answer:
harkovskaia [24]3 years ago
5 0
It’s a heterogeneous compound.
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What type of reaction is shown below? <br> Ca + 2H2O - Ca(OH)2 + H2
krek1111 [17]
A + BC  ---> AB + C
So here one reactant (A) is accepting a group which is being given by another compound (BC) however the A is not giving any group / element or ion
So this single displacement
Similarly in the given reaction
the anion OH- is only being replaced
The element Ca accepts OH- and H2O loses the same group to form new element H2
So the correct answer is
Single replacement also known as single displacement.
5 0
2 years ago
How much water would I need to add to 500 ml of a 2.4 M KCL solution to make a 1.0 M solution
Yuki888 [10]

the answer is 700ml

5 0
2 years ago
The change of phase from a vapor to a liquid is called _____. evaporation condensation distillation vaporization
anastassius [24]
Its condensation

the vapour has a lot of kinetic energy but if it cools down it loses that energy and condenses into a liquid 

hope that helps 
5 0
2 years ago
Read 2 more answers
Calculate the total energy required to break all the bonds in:
Dennis_Churaev [7]

Explanation:

a. O+ 2=O2

b. C2+h2=CH4

c. C2+H6= C2H6

7 0
2 years ago
The minimum combined kinetic energy reactant particles must possess in order for their collision to result in a reaction is call
lana66690 [7]

Answer: Activation energy

Explanation:

In a chemical reaction, the reactants contains particles which must collide in order for a reaction to occur. The rate of reaction depends on the frequency of effective collision between the reacting particles. Effective collision are those that result in reactions, which when they occur the colliding particles become activated with increased kinetic energy.

This energy must exceed a particular energy barrier for a particular reaction if the reaction must take place. This energy barrier that must be overcome before a reaction takes place is known as the ACTIVATION ENERGY.

To explain further, when two particles or molecules A and B come in contact with each other, for a reaction to take place, they must collide with a sufficient force to break the bond that exists between them. The minimum combined kinetic energy these reactant particles must possess in order for their collision to result in a reaction is called the activation energy.

8 0
2 years ago
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