Answer:
Reaction a: chemical, reaction b: nuclear
Explanation:
Answer:
A tin atom and 2 molecules containing two hydrogen atoms bonded to one oxygen atom.
Explanation:
Equation of reaction:
SnO2 + 2H2 ---> Sn + 2H2O
According to Dalton's postulates:
1. All elements are made up of small indivisible particles called atoms
2. The atom cannot be created nor destroyed
3. The atoms of the same element are alike in every aspect and differ from atoms of all other elements
4. During a chemical reaction there is a combination of atoms in small whole numbers.
From the given options, the one that satisfies the postulates of Dalton is:
"A tin atom and 2 molecules containing two hydrogen atoms bonded to one oxygen atom"
This is because it gives a balanced chemical equation for the number of atoms reacting for each element is equal to the number of atoms of each element produced. This is in accordance with the postulate that atoms are neither created nor destroyed.
The three other postulates are also obeyed. The small whole number ratio for the reactants and products in the chemical reaction is 1 : 2 : 2.
Basically, because the skater will never use some kind of a boost, they will rely purely on forces. At the top of a slope, their kinetic E is zero, and their Potential E is as high as it will be.
The skater will not be able to ever get higher that the initial height without some kind of force helping it.
The balanced chemical reaction is:
<span>2NH3(aq) + H2SO4(aq) = (NH4)2SO4(aq)
</span>
We are given the amount of sulfuric acid to be used for the reaction. This will be the starting point of our calculations.
60.0 mol H2SO4 ( 1 mol (NH4)2SO4 / 1 mol H2SO4 ) ( 132.14 g (NH4)2SO4 / 1 mol (NH4)2SO4 ) = 7928.4 g <span>(NH4)2SO4</span>
