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neonofarm [45]
2 years ago
14

Please help, i will mark you as brainliest​

Chemistry
2 answers:
olga nikolaevna [1]2 years ago
8 0
Hey , This photo is only a small part , you can find it on gg, search Reactivity Series , it will show all^^

Mrrafil [7]2 years ago
4 0

Answer:

The order of reactivity of metals is as follows, Potassium > Sodium > Lithium > Calcium > Magnesium > Aluminium > Zinc > Iron > Copper > Silver > Gold.

Explanation:

The reactivity of elements (metals) towards water decreases towards the right in a period. It also increases down the group. But zinc is more reactive towards water than iron. Hence the correct order is:

Iron<Zinc<Magnesium<Sodium

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Oduvanchick [21]

Answer:

C. anything that has mass and takes up space

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3 years ago
What is the molarity of a solution prepared by dissolving 10.0 grams of NaOH in enough water to make a solution with a total vol
riadik2000 [5.3K]

Solution :

Molecular mass of NaOH is 23 g/mol .

So, number of moles of NaOH is given by :

n = \dfrac{10}{40}\ mole

Now, we know molarity is given by :

Molarity = \dfrac{Number \ of \  moles\ of \ salute}{Volume ( in \  Liter ) }

M = \dfrac{10}{40\times 2.4} \  M\\\\M = 0.104 \ M

Hence, this is the required solution.

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3 years ago
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How much work is done if an object moves 4.5 m in has 12 Newtons of force on it
Cloud [144]

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Work done = 12 · 4.5= 54 joules

4 0
3 years ago
Do pure substances have the same chemical and physical properties
Darya [45]
No, some impurities may alter the observed effects of a chemical reaction.. during a reaction other products may be produced, they may alter the MP or BP of the pure substance.  
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