Answer:
The volume of nitrogen oxide formed is 35.6L
Explanation:
The reaction of nitric acid with copper is:
Cu(s) + 4HNO₃ → Cu(NO₃)₂ + 2NO₂(g) + 2H₂O(l)
Moles of copper are:
Moles of nitric acid are:
As 1 mol of Cu reacts with 4 moles of HNO₃:
0.697 mol Cu × (4mol HNO₃ / 1mol Cu) = 2.79 moles of HNO₃ will react. That means Cu is limiting reactant.
Moles of NO₂ produced are:
0.697 mol Cu × (2mol NO₂ / 1mol Cu) = <em>1.394 moles of NO₂</em>
Using PV = nRT
<em>Where P is pressure (735torr / 760 = 0.967atm); n are moles (1.394mol); R is gas constant (0.082atmL/molK); T is temperature (28.2°C + 273.15 = 301.35K). </em>
Thus, volume is:
V = nRT / P
V = 1.394mol×0.082atmL/molK×301.35K / 0.967atm
V = 35.6L
<em>The volume of nitrogen oxide formed is 35.6L</em>
<h3><u>Answer;</u></h3>
CaCO3(s)+ 2 H+(aq) → Ca+2 + CO2(g) + H2O(l)
<h3><u>Explanation</u>;</h3>
- The reaction of an acid with calcium carbonate is an example of an acid-base reaction.
- In these reactions, an acid will react with a base to form a salt and water. The acid was neutralized by the base.
- For example, CaCo3 will neutralize HCl by the following equation:
<em>2HCl(aq) +CaCO3(s) → CaCl2(aq) + H2O(l) + CO2(g)</em>
Answer:
The correct answer is that letter. (μ)
Explanation:
Hello!
According to the international system of units, we use prefixes to indicate the number of places we ran the point.
The letter μ indicates 
The correct answer is that letter. (μ)
It is not in the options but it is correct.
Answer: B. Compound
Explanation: Compound are the substances which are formed by the combination of two or more elements.
Although the phase of the carbon dioxide is gaseous that is single phase, stll it is not considered as the Homogeneous mixture because in carbon dioxide , both the elements carbon and oxygen reacts with each other chemically to form the gas. This doesnot happen in te mixture.
Thus carbon dioxide is considered as the compound.
Answer:
Because of increase in enzyme activity
Explanation:
Increase in salt concentration of sodium alginate yeast can lead to an increase in enzyme reaction/activity, causing the yeast spheres to rise up faster to the surface.
