Answer:
FeCl₃ is present in excess.
Explanation:
Given data:
Number of moles of FeCl₃ = 6 mol
Number of moles of oxygen = 3 mol
Excess reactant = ?
Solution:
Chemical equation:
4FeCl₃ + 3O₂ → 2Fe₂O₃ + 6Cl₂
Now we will compare the moles of reactant with product.
FeCl₃ : Fe₂O₃
4 : 2
6 : 2/4×6= 3
FeCl₃ : Cl₂
4 : 6
6 : 6/4×6= 9
O₂ : Fe₂O₃
3 : 2
O₂ : Cl₂
3 : 6
Less number of moles of product are formed by the oxygen thus it will act as limiting reactant while FeCl₃ is present in excess.
Answer:
the attraction water molecules have to other surfaces
Explanation:
Adhesion is defined as the attractive forces between unlike substances, e.g water moving up a capillary tube.
Adhesion is the tendency of dissimilar particles or surfaces to cling to one another(Wikipedia).
So, what we mean by adhesion in this context, is the attraction water molecules to other surfaces.
Based on the calculations, the final pressure of this gas sample at 370°C is equal to 2.66 atm..
<u>Given the following data:</u>
Initial temperature = 180°C.
Final temperature = 370°C.
Initial pressure = 900 torr.
<u>Conversion:</u>
760 torr = 1 atm.
900 torr = 1.29 atm.
<h3>How to determine the final pressure.</h3>
In order to calculate the final pressure of an ideal gas at constant volume, we would apply Gay Lussac's law.
Mathematically, Gay Lussac's law is given by this formula;
<u>Where:</u>
- k is the constant of proportionality.
Substituting the given parameters into the formula, we have;
Final pressure = 2.66 atm.
Read more on temperature here: brainly.com/question/888898
In this question, you want to make <span>400 ml of 0.1m NaOH solution. The amount of NaOH in mol should be:
molar= mole of NaOH/l of water
0.1m= mol of NaOH/ 0.4l
</span>mol of NaOH= 0.1* 0.4= 0.04 mol
The molecular weight for NaOH should be 40g/mol. Then the amount of NaOH in grams would be: 0.04 * 40(g/mol) = 1.6 grams
Properties: melting point of -100.98°C
boiling point of 34.6°C
density of 3.214 g/l
gravity of 1.56 (-33.6°C)
valence of 1, 3, 5, or 7