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zhuklara [117]
3 years ago
13

If your sample contained a volatile impurity, what value would be in error

Chemistry
1 answer:
weeeeeb [17]3 years ago
6 0
A volatile impurity, is an impurity that evaporates quickly, so, if you were to conduct an experiment on a substance with this type of impurity, the evaporation point, and the mass of the substance at high temperatures would be in error. 
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List the number of atoms for each element in this compound: NH3 Nitrogen: 4, 3, 2 or 1 Hydrogen: 4 3 2, or 1 ??
guapka [62]
<h3>Answer:</h3>

1 Nitrogen atom and 3 Hydrogen atoms

<h3>Explanation:</h3>
  • A molecule is the smallest particle of an element or a compound that has the properties of the element or the compound.
  • Molecules of elements are made up of similar atoms while those of compounds are made up of different atoms from different elements.
  • Compounds are made up of atoms of different elements.
  • For example, NH₃ is made up of one nitrogen atom and three ammonia atoms, water(H₂O) is made up of two hydrogen atoms and one oxygen atom.
6 0
3 years ago
Which of the following resources is renewable?
Kitty [74]

The answer is B cotton, since you can grow it.

7 0
4 years ago
When 3.00 moles of hydrogen molecules and 1.50 moles of oxygen molecules react, they form 3.00 moles of water according to the r
Luden [163]

Answer:

The answer to your question is: 6 grams of hydrogen

Explanation:

Data

3.0 moles of hydrogen

1.5 moles of oxygen

3 moles of water

# of grams of hydrogen required to form 3 moles of water?

Equation

                  H₂    +   1/2 O₂        ⇒        H₂O

                3 mole    1.5 moles           3 moles

 Atomic weight of H₂ = 2 g

                         1 mole -----------------------   2 g

                         3 moles ---------------------    x

                          x = 3(2)/1 = 6 grams of hydrogens

3 0
3 years ago
Use the periodic table to identify the number of core electrons and the number of valence electrons in each case below.
irina1246 [14]

Answer:

I guess this is correct.

Explanation:

they do have the correct amount of valence electrons.

3 0
3 years ago
What is the percentage of the actual yield of the reaction of 2.5 mol of Fe(NO3),
Sliva [168]

Answer:

Percent yield = 87.5%

Explanation:

Given data:

Number of moles of Fe(NO₃)₃ = 2.5 mol

Number of moles of Na₂CO₃ = 3.6 mol

Actual yield of NaNO₃ = 6.3 mol

Percent yield of NaNO₃ = ?

Solution:

Chemical equation:

2Fe(NO₃)₃ + 3Na₂CO₃        →     Fe₂(CO₃)₃ + 6NaNO₃

now we will compare the moles of both reactant with NaNO₃.

                   Fe(NO₃)₃          :              NaNO₃

                       2                   :                  6

                     2.5                  :            6/2×2.5 = 7.5

                  Na₂CO₃             :              NaNO₃

                       3                   :                  6

                     3.6                  :            6/3×3.6 = 7.2

Theoretical yield of NaNO₃ is 7.2 mol.

Percent yield:

Percent yield = actual yield / theoretical yield ×100

Percent yield = 6.3 mol / 7.2mol ×100

Percent yield = 87.5%

5 0
3 years ago
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