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Rainbow [258]
3 years ago
10

A story on chemical reaction or electric current

Chemistry
2 answers:
Olegator [25]3 years ago
7 0

Answer:

Story in chemical reaction is about the general issue of bond formation and bond breaking where by the energy required to break bond of reactant to form product is called activation energy

Scientist study the whole process and bring law of law conservation of mass,law of definite proportion (Louis proust 1799),law of multiple proportion (Dalton 1803) law of reciprocal proportion(Ritcher1792)

Story about electric current

It's about rate of flow of electric charge in given point

Inshort discovered by the work of Faraday and Alessandro Volta1803italian physics

Anuta_ua [19.1K]3 years ago
4 0

Answer:

a process that involves rearrangement of the molecular or ionic structure of a substance, as opposed to a change in physical form or a nuclear reaction

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When sodium and oxygen react to form an ionic compound, the mass of the compound ____ the sum of the masses of the individual el
Anna007 [38]
Hi Lara

The answer is : C

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I hope that's help!
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What does the term division of labor mean as it relates to cells?
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what each cells job is divided

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What is the molarity of a solution containing 8.9 g of NaOH in 550. mL of NaOH solution?
bulgar [2K]

Answer:

0.4 M

Explanation:

Molarity is defined as moles of solute, which in your case is sodium hydroxide,  

NaOH

, divided by liters of solution.

molarity

=

moles of solute

liters of solution

Notice that the problem provides you with the volume of the solution, but that the volume is expressed in milliliters,  

mL

.

Moreover, you don't have the number of moles of sodium hydroxide, you just have the mass in grams. So, your strategy here will be to

determine how many moles of sodium hydroxide you have in that many grams

convert the volume of the solution from milliliters to liters

So, to get the number of moles of solute, use sodium hydroxide's molar mass, which tells you what the mass of one mole of sodium hydroxide is.

7

g

⋅

1 mole NaOH

40.0

g

=

0.175 moles NaOH

The volume of the solution in liters will be

500

mL

⋅

1 L

1000

mL

=

0.5 L

Therefore, the molarity of the solution will be

c

=

n

V

c

=

0.175 moles

0.5 L

=

0.35 M

Rounded to one sig fig, the answer will be

c

=

0.4 M

Explanation:

6 0
2 years ago
Can reactions be more than one of the five types
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Yes you can it will not just have 5 :)

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