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AVprozaik [17]
3 years ago
15

Can you discribe physical and chemical properties

Chemistry
1 answer:
vodka [1.7K]3 years ago
3 0
Physical is something you can feel chemical is like a gas
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What volume of .100 M HCl is required to titrate .100 g of sodium bicarbonate to its equivalence point?
Karo-lina-s [1.5K]
The reaction is:  HCl + Na HCO3 → NaCl + H2CO3, which is already balanced.

Then the molar ratios are 1 mol HCL : 1 mol NaHCO3

You know the mass of NaHCO3 is 0.100 g, then you can find the number of moles using the molar mass of NaHCO3

molar mass of NaHCO3 is 23 g/mol + 1 g/mol + 12g/mol + 3*16g/mol = 84 g/mol

And the number of moles is: 0,100 g / 84 g/mol  = 0,0012 mol of NaHCO3.

Then, from the ratio 1:1, you know that, at the titration point, the number of moles of HCl is the same: 0,0012 mol of HCl.

Now from the fomula of molarity you have: M = #of moles / V in liters

=> V in liters = # of moles / M = 0.0012 mol / 0.100 M = 0.012 liters

Answer: 0.012 liters of HCL 
6 0
4 years ago
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The volume occupied by 1.5 mole of gas at 35°C and 2.0 atmosphere of pressure is blank liters
Aneli [31]

Answer: 18.97 L

Explanation:

This can be solved by the Ideal Gas equation:

P.V=n.R.T  

Where:  

P=2 atm is the pressure of the gas  

V is the volume of the gas  

n=1.5 mole the number of moles of gas  

R=0.0821\frac{L.atm}{mol.K} is the gas constant  

T=35\°C+273.15=308.15 K is the absolute temperature of the gas in Kelvin

Finding V:

V=\frac{nRT}{P}

V=\frac{(1.5 mole)(0.0821\frac{L.atm}{mol.K})(308.15 K)}{2 atm}

V=18.97 L

Therefore:

The volume occupied by 1.5 mole of gas at 35°C and 2.0 atmosphere of pressure is <u>18.97</u> liters

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4 years ago
What type of metals are the elements in groups 3-12
Anni [7]

Answer:Transition Metals

Explanation:

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Which is a characteristic of nuclear fusion?
ExtremeBDS [4]

I think that the correct answer is fission

7 0
3 years ago
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What is the conversion factor of Avagodro's number?
SCORPION-xisa [38]

Answer:

It's (6.02214179×1023) / one mole of substance.

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3 years ago
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