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hodyreva [135]
3 years ago
9

Determine the oxidation number of sulfur in S203 ( with steps)

Chemistry
1 answer:
sdas [7]3 years ago
8 0

Answer:

The oxidation number of sulphur in is +2

Explanation:

<em>S</em><em>2</em><em>O</em><em>3</em><em> </em><em>2</em><em>-</em>

<em>2</em><em> </em><em>(</em><em>S</em><em>)</em><em> </em><em>+</em><em> </em><em>3</em><em>(</em><em>O</em><em>)</em><em>=</em><em>-</em><em>2</em>

<em>2</em><em> </em><em>(</em><em>S</em><em>)</em><em> </em><em>+</em><em> </em><em>3</em><em>(</em><em>-</em><em>2</em><em>)</em><em>=</em><em>-</em><em>2</em>

<em>2</em><em> </em><em>(</em><em>S</em><em>)</em><em> </em><em>+</em><em> </em><em>(</em><em>-</em><em>6</em><em>)</em><em> </em><em>=</em><em>-</em><em>2</em>

<em>2</em><em> </em><em>S</em><em> </em><em>=</em><em> </em><em>+</em><em>4</em>

<em>S</em><em>=</em><em> </em><em>+</em><em /><em>2</em><em />

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a technician mixes 80 ml of a 5% solution with 10 ml of water. what is the final percentage strength of the solution prepared?
Vinvika [58]

A technician mixes 80 ml of a 5% solution with 10 ml of water.  the final percentage strength of the solution prepared is 40 %.

given that :

8 ml of a 5 % solution mix with 10 ml . that means the 80 mL of 5 % solution is diluted with water of 10 mL

therefore, 80 × 5 = 10 × x %

x % = 40 %

Therefore, the final percentage strength of the solution is 40 %

Thus, A technician mixes 80 ml of a 5% solution with 10 ml of water.  the final percentage strength of the solution prepared is 40 %.

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5 0
1 year ago
During the combustion of 2.00 g of coal, the temperature of 500 g of water inside the calorimeter increased from 25.0°c to 43.7°
pantera1 [17]
Answer is: 39,083kJ.
m(coal) = 2,00g.
m(water) = 500g.
ΔT = 43,7°C - 25°C = 18,7°C, <span>difference at temperatures.</span>
c(water) = 4,18 J/g·°C, <span>specific heat of water
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Q = 500g·18,7°C·4,18J/g·°C.
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6 0
3 years ago
___ the volume of a gas <br><br> Which of the following will hold its shape?
monitta

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6 0
3 years ago
How many joules of energy do you have if you have 0.45 L of water in a can and you heat the 23C water to 55C site:socratic.org
Bess [88]

Answer:

Q = 60192 j

Explanation:

Given data:

Volume of water = 0.45 L

Initial temperature = 23°C

Final temperature = 55°C

Amount of heat absorbed = ?

Solution:

Formula:

Q = m.c. ΔT

Q = amount of heat absorbed or released

m = mass of given substance

c = specific heat capacity of substance

ΔT = change in temperature

ΔT =  55°C - 23°C

ΔT = 32°C

one L = 1000 g

0.45 × 1000 = 450 g

Specific heat capacity of water is 4.18 j/g°C

Q = m.c. ΔT

Q = 450 g.  4.18 j/g°C.  32°C

Q = 60192 j

4 0
3 years ago
Which of the following describes what occurs as a gas becomes a liquid?
lora16 [44]
As the gas cools it condenses and becomes a liquid its atoms also become smaller
5 0
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