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AleksAgata [21]
4 years ago
6

An indicator is what type of compound? pls helppp

Chemistry
1 answer:
denpristay [2]4 years ago
3 0
Indicators are colorful compounds that are weak acids or bases.
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Can you name some chemical elements you use or see on a regular basis?
kaheart [24]

Answer:

Hydrogen. Symbol: H. Atomic Weight: 1.008. ...

Magnesium. Symbol: Mg. Atomic Weight: 24.305. ...

Aluminum. Symbol: Al. Atomic Weight: 26.9815385. ...

Phosphorus. Symbol: P. ...

Chlorine. Symbol: Cl. ...

Argon. Symbol: Ar. ...

Potassium. Symbol: K. ...

Calcium. Symbol: Ca.

4 0
3 years ago
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How many grams are in 3 moles of HF? Help please!! 20 points!
Svetllana [295]

It would be 60.03 grams

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What are fixed reference points on the Celsius thermometer
alukav5142 [94]

The fixed reference points on the Celsius thermometer is 0 and 100.

8 0
3 years ago
Balance the following redox equations by the ion-electron method:? A) H2O2 + Fe 2+ ---> Fe 3+ + H2O (in the acidic solution)
Vaselesa [24]
We balance the given reactions above by following the rules in balancing redox reactions in acidic or basic solutions. Balance the atoms aside from the O and H atoms. Then we balance the Os and Hs by adding H2O or H+. Finally, we balance the total charge of the reactant and product by adding e-. We do as follows:

<span>A) H2O2 + Fe 2+ ---> Fe 3+ + H2O (in the acidic solution)
</span><span>   2H+ + </span>H2O2 + Fe 2+ ---> Fe 3+ + 2H2O 
   e- + 2H+ + H2O2 + Fe 2+ ---> Fe 3+ + 2H2O 
<span>
C) CN- + MnO4- ---> CNO- +MnO2 (in basic solution)
</span>     CN- + MnO4- ---> CNO- +MnO2 + H2O
     2H+ + CN- + MnO4- ---> CNO- +MnO2 + H2O
     2OH- + 2H+ + CN- + MnO4- ---> CNO- +MnO2 + H2O + 2OH-
     2H2O + CN- + MnO4- ---> CNO- +MnO2 + H2O + 2OH-
     e- + H2O + CN- + MnO4- ---> CNO- +MnO2 + 2OH-
<span>
E) S2O2/3- + I2 ---> I- + S4O2/6- (in acidic solution)
    2</span>S2O2/3- + I2 ---> 2I- + S4O2/6- 
    4H+ + 2S2O2/3- + I2 ---> 2I- + S4O2/6- + 2H2O
    6e- + 4H+ + 2S2O2/3- + I2 ---> 2I- + S4O2/6- + 2H2O

3 0
4 years ago
How many atoms are in a sample of carbon weighing 16 grams? Round your answer to two decimal places.
Gennadij [26K]

Answer:

d) 8.01 E23 atoms

Explanation:

  • mol ≡ 6.022 E23 atoms

∴ mass C = 16 g

∴ molar mass C = 12.0107 g/mol

⇒ mol C = (16 g)*(mol/12.0107 g) = 1.332 mol

⇒ atoms C = (1.332 mol)*(6.022 E23 atoms/mol)

⇒ atoms C = 8.02 E23 atoms

8 0
3 years ago
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