First, we use avogadro's number to convert atoms into moles. Then, relate the number of moles from elemental to the compound. Lastly, we use conditions at STP to calculate the volume. We do as follows:
<span>9.86 x 10²⁸ O-atoms ( 1 mol / 6.022x10^23 atoms O) ( 1 mol N2O2 / 2 mol O ) ( 22.4 L / 1 mol ) = 1833809.37 L needed</span>
B. Bleach and sea water should be identified as bases
Explanation:
- The pH scale measures the acidic or basic nature of a substance.
- Ranges from 0 to 14.
- If pH is lower than 7 → the solution is an acid.
- If pH is more than 7 → the solution is an basic or alkaline.
- If a pH is a 7 it is neutral.
In the given question, the pH scale measures for bleach is 8 and for sea water it is 13. So, bleach is basic, not neutral and Sea water is basic too instead of acid. So, Bleach and sea water should be identified as bases.
Explanation:
It is possible to predict a physical change or chemical change because they have very unique properties and differences.
A physical change is a change that alters the physical properties of matter especially form and state.
A chemical change is a change in which new kinds of matter is formed.
Here are some of the properties and indicators of the these change;
- A physical change is easily reversible
- Chemical changes are not easily reversible
- Physical changes leads to the production of no new kind of matter.
- Chemical change produces new kinds of matter
- Physical change involves no change in mass
- Chemical change involves a change in mass
- Physical change requires little to no amount of energy
- Chemical change requires considerable amount of energy.
learn more:
Chemical change brainly.com/question/9388643
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