Mixture. Distilled Water may be a pure substance, however, there are many minerals and such that are in tap water, making it a mixture.
The volume of CO2 at STP =124.298 L
<h3>Further explanation</h3>
Given
Reaction
4 KMnO4, +4 C3H5(OH)5, -7K2CO3, + 7 Mn2O3, +5 CO2, + 16 H2O
701,52 g of KMnO4
Required
volume of CO2 at STP
Solution
mol KMnO4 (MW=158,034 g/mol) :
mol = mass : MW
mol = 701.52 : 158.034
mol = 4.439
mol CO2 from equation : 5/4 x mol KMnO4 = 5/4 x 4.439 = 5.549
At STP 1 mol = 22.4 L, so for 5.549 moles :
=5.549 x 22.4
=124.298 L
Answer:
When atom undergoes the alpha emission the original atom convert into the atom having mass number less than 4 and atomic number 2 less than the starting atom.
Explanation:
Alpha radiations are emitted as a result of radioactive decay. The atom emit the alpha particles consist of two proton and two neutrons. Which is also called helium nuclei. When atom undergoes the alpha emission the original atom convert into the atom having mass number less than 4 and atomic number 2 less than the starting atom.
Properties of alpha radiation:
Alpha radiations can travel in a short distance.
These radiations can not penetrate into the skin or clothes.
These radiations can be harmful for the human if these are inhaled.
These radiations can be stopped by a piece of paper.
₉₂U²³⁸ → ₉₀Th²³⁴ + ₂He⁴ + energy
Nitrogen exists in the ocean in three redox states:
- In + 3 state as ammonium ion, NH4+
- In the 0 state as nitrogen gas
- In the +5 state as trioxonitrate (v) ion, NO3-
<h3>What are redox states?</h3>
The redox state of an element is the charge it appears to have in the free or combined state.
Nitrogen exists in the ocean in three redox states:
- In + 3 state as ammonium ion, NH4+
- In the 0 state as nitrogen gas
- In the +5 state as trioxonitrate (v) ion, NO3-
Therefore, the redox state of nitrogen varies in the ocean.
Learn more about redox state at: brainly.com/question/26263317
Answer:
I think it's
(A) A telescope is an instrument that magnifies tiny objects to make them appear bigger
