Answer: A
Explanation:
9 protons correspond to fluorine.
- The first model shows 9 electrons, so the charge is neutral and is thus a fluorine atom.
- The second model shows 10 electrons, so the charge is -1, meaning is a fluoride ion.
1,000 in scientific notation is something that is Beyond, that is what it means for scientist's.
Answer is: <span>chemical change occurred.
Electrolysis reaction: 2H</span>₂O → O₂ + 2H₂.
In thic electrolysis reaction two gases are formed, one is oxygen with boiling point of -183°C and second one is hydrogen with boiling point of -253°C. This is chemical change because from one molecule two molecules are produced and because they have new boiling points, boiling point of water is 100°C.
277.79 atm is the calculated gas pressure.
The ideal gas is a fictitious concept used to study how real gases behave by comparing them to their deviations. The pressure-temperature rules are followed by an ideal gas.
177 atm is the initial pressure. The starting temperature is 298 K (25 °C = 25 + 273 °C).
195°C = 195+273
= 468K is the final temperature.
The pressure temperature relation illustrated below can be used to get the final pressure.
P1/T1 = P2/T1
= P1T2/T1
= 177 atm 468 K /298 K
= 277.97 atm
The final pressure is therefore 277.97 atm.
Learn more about Pressure here-
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The compound HNO3 is called nitric acid.
HNO3 is a covalent compound and a strong acid which ionizes in water into H+ (proton) and NO3- (nitrate ion).
HNO3 (aq) ↔ H+(aq) + NO3-(aq)
Ans: HNO3 = Nitric Acid
[On a side note: Nitrous acid is HNO2]