<span>Yes, mass is conserved. When sodium hydroxide (clear solution) and copper sulfate (blue solution) are mixed, they form a copper hydroxide (a blue solid) and sodium sulfate (a clear solution).
This can be tested simply. First weigh the masses (10 g and 57 g, which totals 67 g)) of the two starting solutions prior to mixing. Then mix and allow the reaction to occur and weigh the mass of the mixture (10g + 57 g = 67 g). The two solutions should have the same mass and therefore demonstrate conservation of mass.</span>
Answer:
CO₂ + 4 H₂S + O₂ ---> CH₂O + 4 S + 3 H₂O
Explanation:
The unbalanced equation looks like this:
CO₂ + H₂S + O₂ ---> CH₂O + S + H₂O
Below is the amount of each element on each side of the reaction.
Reactants:
> 1 carbon, 2 hydrogens, 1 sulfur, 4 oxygens
Products:
> 1 carbon, 4 hydrogens, 1 sulfur, 2 oxygens
As you can see, there is a differing amount of hydrogens and oxygens on both sides. The balanced equation looks like this:
1 CO₂ + 4 H₂S + 1 O₂ ---> 1 CH₂O + 4 S + 3 H₂O
Below is the amount of each element on each side of the reaction.
Reactants:
> 1 carbon, 8 hydrogens, 4 sulfurs, 4 oxygens
Products:
> 1 carbon, 8 hydrogens, 4 sulfurs, 4 oxygens
Answer:
1.553 M^2s^-1
Explanation:
Now let us consider experiments 1,2,3.
In experiment 1 and 2, the concentration of NO is doubled and the initial rate of reaction is quadrupled.
0.575/0.144 = 4
So;
2^2 =4
In experiment 2 and 3
The concentration of reaction of H2 is doubled and the rate of reaction is doubled.
0.575/0.287 = 2
2^1 =2
So we can now write;
Rate =k[NO]^2 [H2]^1
Taking up the first reaction;
0.144 =k [0.475]^2 [0.411]
k = 0.144/ [0.475]^2 [0.411]
k = 1.553 M^2s^-1
Answer:
cylinder A has a higher density then cylinder B or more accurately the liquid in cylinder A is denser then the liquid in the second tube.
Explanation:
"Denser" simply means more matter is contained in the same space for example say you fill a tank with helium and another tank with water. Although they are the same size one will weigh much more because their is more particles or "stuff" inside the same area this can be because of a few things one it can be because the atoms or elements that compose the substance are heavier containing more electrons and protons in their orbit. or the molecular structure is more compact like a chicken wire fence has more wire in it then a barbed wire wire fence covering the same area because of the grid of wire in the middle.