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Firlakuza [10]
3 years ago
13

If you do not understand a direction or part of a laboratory procedure, you should _.

Chemistry
2 answers:
alekssr [168]3 years ago
8 0

The correct answer is C, as if you do not understand something, it's always best to ask for help, especially when performing a sensitive procedure.

Minchanka [31]3 years ago
3 0

The answer to this is

<u><em>C.</em></u>

and please mark brainliest :)

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In which of the following locations are bacteria often found?
djyliett [7]

Answer:  

in the air and soil  

in drinking water

on and inside the human body

Explanation: Hope that helps

7 0
2 years ago
C2H2 +<br> 02 --&gt;<br> CO2 +<br> H20
svlad2 [7]

Answer:

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A plain-carbon steel contains 45 wt % proeutectoid ferrite. What is its average carbon content in weight percent
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7 0
2 years ago
How many moles of dipyrithione contain 8.2 x 10^24 atoms of N
Pani-rosa [81]
Dipyrithione is a chemical with formula, C₁₀H₈N₂O₂S₂. This means that each molecule of the substance has two (2) atoms of nitrogen. By using the dimensional analysis and Avogadro's number, equal to 6.022 x 10²³, we calculate for the answer as shown below.

    n = (8.2 x 10²⁴ atoms N)(1 molecule dipyrithione/ 2 atoms of N)(1 mole dipyrithione/ 6.022 x 10²³ molecules dipyrithione)

Simplifying,
  n = 6.8 moles dipyrithione

<em>ANSWER: 6.8 moles</em>
4 0
3 years ago
A gas at constant volume has a pressure of 3.20 atm at 300. K. What will be the pressure of the gas at 290. K?
melomori [17]
  • From the general law of gases: PV = nRT,

where P is the pressure (atm),

V is the volume (L),

n is the number of moles,

R is the general gas constant (8.314 L.atm/mol.K),

T is the temperature in Kelvin

  • at constant volume of the gas: P1T2 = P2T1

P1 = 3.20 atm, T1 = 300 K, T2 = 290 K, P2 = ??

(3.20 atm)(290 K) = P2(300 K)

P2 = (3.20 atm)(290 K)/ (300 K) = 3.093 atm

3 0
2 years ago
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