Explanation:
-In NaCl, the sodium ion is the positive one. The chloride ion is the negative one.
-In Ca3P2, the calcuim ion is the positive one. The phosphide ion is the negative one
-In Rb2S, the rubidium ion is the positive one. The sulfide ion is the negative one
-In AlBr3, the aluminum ion is the positive one. The bromide ion is negative
-The K2Se, potassium ion is the positive one. The selenide ion is the negative one
-The BaO, the baruim ion is the positive one. Oxygen ion is the negative one
Answer:The substance(s) to the left of the arrow in a chemical equation are called reactants. A reactant is a substance that is present at the start of a chemical reaction. The substance(s) to the right of the arrow are called products . A product is a substance that is present at the end of a chemical reaction.
Explanation:
Answer:
(i) +3.
(ii) Mn.
Explanation:
Hello,
(i)
Based on the diatomic ion, we solve for the unknown oxidation state of carbon, assuming that the oxygen works with -2, by a change balance:
(ii)
We first must each ion's oxidation states as follows:
Then, for the reduction half reaction we identify the manganese as the element decreasing its oxidation state based on:
In addition, the carbon is oxidized from +3 to +4 (increase the oxidation state).
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Answer:
c) 1.55 ×10⁻² moles
Explanation:
Given data:
Number of moles of sodium = ?
Number of atoms = 9.34 ×10²¹ atoms
Solution:
The given problem will solve by using Avogadro number.
It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance.
The number 6.022 × 10²³ is called Avogadro number.
For example,
18 g of water = 1 mole = 6.022 × 10²³ molecules of water
1.008 g of hydrogen = 1 mole = 6.022 × 10²³ atoms of hydrogen
Moles of sodium atoms:
1 mole contain 6.022× 10²³ atoms
9.34 ×10²¹ atoms × 1 mol / 6.022× 10²³ atoms
1.55 ×10⁻² moles
Both cyclic and noncyclic pathways operate to varying degrees during photosynthesis. Since the non-cyclic pathway produces both ATP and NADPH explain the<span> purpose of the cyclic pathway of the electron flow. ... </span>Explain how the independence of photosystem<span> l </span>gives a mechanism<span> for the evolution of the photosynthetic pathway.</span>