21. change in temperature, change in color, or noticeable odor (after reaction has begun)
22. Picture... Wasn't so sure about this since no charge was given, so I suspected it has a charge of 2. If you have more information on this I would be glad to help, and I can't tell what is happening with the calculations given. It would be helpful if you can add spaces or put a line break.
23. An ion is an atom or molecule with an electric charge. It is formed when atoms lose or gain electrons. There are two types of ions: cations (net positive charge) and anion (net negative charge).
24. Picture
25. a) dinitrogen tetrahydride
b) phosphorus triiodide
c) lithium hydroxide
Answer:
The new pressure is 1,52 atm
Explanation:
We use the gas formula, which results from the combination of the Boyle, Charles and Gay-Lussac laws. According to which at a constant mass, temperature, pressure and volume vary, keeping constant PV / T. We convert the unit Celsius into Kelvin:
75°C=273+75=348K ; 103°C=273+103=376K
(P1xV1)/T1=(P2xV2)/T2
(1,65atm x4,54L)/348K= (P2x 5,33L)/376K
0,0215 atmxL/K=(P2x 5,33L)/376K
P2=(0,0215 atmxL/K x 376K)/5,33l= 1,52 atm
Answererosion or a volcanic eription and sometimer earthquaqes
Explanation:
Answer:
The answer is B The aluminum metal.
Explanation:
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