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Gelneren [198K]
2 years ago
5

Among pattasium and calcium which is more reactive ,why​

Chemistry
1 answer:
Wittaler [7]2 years ago
3 0

Answer:

Calcium is more reactive

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What cause the heat we feel on a hot, sunny day is UV Rays my mans
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Man's scientific theories are often in correct because his knowledge is​
Alik [6]

Answer:

Incomplete  

Explanation:

I wouldn't say that a scientific theory is wrong.

It is the best we have at the time, based on all available knowledge .

As each new discovery is made, scientists modify the theory to fit the new knowledge.

The scientific method is a never-ending process.

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What is the molality of a solution containing 10.0 G of NA2 S04 and 1000.0 G of water
galina1969 [7]

Explanation:

1 literThe total of water is equal to 1000.0 g of water

we need to find the molality of a solution containing 10.0 g of dissolved in  Na₂S0₄1000.0 g of water

1. For that find the molar mass

Na:  2 x 22.99= 45.98

S:  32.07

O:  4 x 16= 64

The total molar mass is 142.05

We have to find the number of moles, y

To find the number of moles divide 10.0g by 142.05 g/mol.

So the number of moles is 0.0704 moles.

For the molarity, you need the number of moles divided by the volume. So, 0.0704 mol/1 L.

The molarity would end up being 0.0704 M

The molality of a solution containing 10.0 g of Na2SO4 dissolved in 1000.0 g of water is  0.0704 Mliter

7 0
2 years ago
A change in the internal energy of a system at constant pressure from a chemical reaction will result in an identical change in
xenn [34]

Answer:

1

Explanation:

6 0
2 years ago
Read 2 more answers
2. The Density of Water is 1.0000g/cm3. Based on this property of water,
Vanyuwa [196]

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if the object sank then that object has a greater density then water. if the object floated then its density is lower then water.

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lets say object 1 has a density of 24/cm3. the density is greater then water (1.0000g/cm3) so it would sink. now lets say object 2 has a density of 0.79383g/cm3 since it's less then the density of water (1.0000g/cm3) it would float.

7 0
3 years ago
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