This question uses mole ratios. firstly, we look at how many moles of H2 are produced for every mole of HCl: from 1 Hcl, we get half a mole of H2. therefore, however many moles of HCl are present in the 0.075 L of 1.0M HCl, half that number of H2 moles will be produced.
n=cv
=0.0750 x 1.0
=0.075 mol HCl
n(H2)= 0.5 x n(HCl)
=0.0375 moles of H2
Answer:
From 4.9 g of sulfuric acid 8.175 g of potassium sulfate is formed.
Explanation:
Given data:
Mass of H₂SO₄ = 4.9 g
Mass of K₂SO₄ formed = ?
Solution:
Chemical reaction:
H₂SO₄ + 2KOH → K₂SO₄ + 2H₂O
Number of moles of H₂SO₄:
Number of moles = mass/ molar mass
Number of moles = 4.9 g/ 98.1 g/mol
Number of moles = 0.05 mol
Now we will compare the moles of H₂SO₄ with K₂SO₄ .
H₂SO₄ : K₂SO₄
1 : 1
0.05 : 0.05
Mass of K₂SO₄:
Mass = number of moles × molar mass
Mass = 0.05 mol × 174.3 g/mol
Mass = 8.715 g
Thus, from 4.9 g of sulfuric acid 8.175 g of potassium sulfate is formed.
Answer:
Some varieties of potato, such as Russet and King Edward, are more suitable for baking than others, owing to their size and consistency. Despite the popular misconception that potatoes are fattening, baked potatoes can be part of a healthy diet.[2]
Answer:
Because the molecules of the mixture would be compact or bond together at room temperature. In this case, both gases will condense to form water (or ice, if the room temperature is prolonged) and such droplets of water will not cause a balloon to spontaneously explode at room temperature.
Explanation:
A mixture of hydrogen and oxygen will form water. Recall that the chemical formula for water is H₂O, where H represents Hydrogen and O represents Oxygen.
A balloon is a light (not thick) solid substance with a thin membrane when blown or filled with some elements or gases.
Room Temperature means cool or cold temperature. You already know that generally at room temperature, the molecules of any substance will stick together or will become less mobile (less spontaneous).
In this case, hydrogen gas and oxygen gas will go through a process called condensation - to form water - and then through the process called freezing - to form ice.
At room temperature, the gases will first change state (state of matter) from gaseous to liquid and then from liquid to solid.
This is why the balloon will NOT spontaneously explode.
