Answer:
as follow
Explanation:
2
a acceptor
b Donor electron
3
A. MgBr2 B. Na2O
C. HCl D. AlCl3
E. K3N F. CaS
* the number is under the charactor/atoms
<u>Answer:</u> The indicators written will identify a new substance is formed in a chemical equation.
<u>Explanation:</u>
A chemical equation is defined as the equation in which reactants and products are present and are separated by a right arrow.
Indicators of a chemical reaction are:
- Formation of a precipitate
- Evolution of gas
- Formation of bubbles
- Color change
- Specific odor
- Change in temperature
Hence, the indicators written will identify a new substance is formed in a chemical equation.
Part (a): The masses
From the periodic table:
molar mass of copper = 63.5 grams
This means that:
mass of 2..06 moles = 2.06 * 63.5 = 130.81 grams
comparing this mass with the 222 grams of silver, we will find that the mass of silver is greater.
Part (b): The atoms:
number of moles = mass / molar mass
number of moles of silver = 222 / 107.8 = 2.059 moles
each mole contains Avogadro's number of atoms.
Since number of moles of copper is slightly larger than nuber of moles of silver, this means that the number of atoms in the copper sample would be more.
Answer:
3 moles H₂
Explanation:
The reaction equation Zn + 2HCl => ZnCl₂ + H₂ shows a 1:1 mole ratio between Zn and molecular hydrogen (H₁). Therefore, the moles of Zn consumed in the reaction is then equal to the moles of H₂ produced. In this case using 3 moles Zn => 3 moles H₂ will be produced.
Answer:
Plants can split starch into it's simpler glucose units for use as energy when needed. Cellulose is known as a structural carbohydrate because of the fibers formed by it's molecules. It is the major component of plant cell walls and comprises over half of the carbon found on planets.
Explanation:
I majored in Chemistry
