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Rudik [331]
3 years ago
13

What do all of the inventors discussed in this lesson have in common?

Chemistry
1 answer:
balandron [24]3 years ago
4 0
What’s the question? But I think it’s 4 that would make the most sense but I don’t know because I don’t know what the lesson was about.
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DATA:
WITCHER [35]

Answer:

Explanation:

trial 1

5 0
3 years ago
Please help! I don't get this one!!
Aneli [31]
Ph = A
Acid = C
Base = D
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3 years ago
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Chlorine can be prepared in the laboratory by the reaction of manganese dioxide with hydrochloric acid. HCl(aq), as described by
melisa1 [442]

Answer:

0.88 g

Explanation:

Using ideal gas equation to calculate the moles of chlorine gas produced as:-

PV=nRT

where,

P = pressure of the gas = 805 Torr

V = Volume of the gas = 235 mL = 0.235 L

T = Temperature of the gas = 25^oC=[25+273]K=298K

R = Gas constant = 62.3637\text{torr}mol^{-1}K^{-1}

n = number of moles of chlorine gas = ?

Putting values in above equation, we get:

805torr\times 0.235L=n\times 62.3637\text{ torrHg }mol^{-1}K^{-1}\times 298K\\\\n=\frac{805\times 0.235}{62.3637\times 298}=0.01017\ mol

According to the reaction:-

MnO_2+4HCl\rightarrow MnCl_2+2H_2O+Cl_2

1 mole of chlorine gas is produced when 1 mole of manganese dioxide undergoes reaction.

So,

0.01017 mole of chlorine gas is produced when 0.01017 mole of manganese dioxide undergoes reaction.

Moles of MnO_2 = 0.01017 moles

Molar mass of MnO_2 = 86.93685 g/mol

So,

Mass=Moles\times Molar\ mass

Applying values, we get that:-

Mass=0.01017moles \times 86.93685\ g/mol=0.88\ g

<u>0.88 g of MnO_2(s) should be added to excess HCl (aq) to obtain 235 mL of Cl_2(g) at 25 degrees C and 805 Torr.</u>

6 0
3 years ago
In degrees celsius, the boiling point of water is ___ degrees higher than the freezing point. (Apex)
mixer [17]

The freezing point of water in Celsius is 0 degrees and the boiling point is 100 degrees so the answer would be 100 degrees

5 0
3 years ago
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The Law of Moments is also an equation written as _____.
gayaneshka [121]

Answer:

I think M=rF

Explanation:

7 0
2 years ago
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