Answer:
The starting reactant in a single displacement reaction is a pure element such as solid zinc metal as well as an aqueous compound. Aqueous implies that the compound is water-soluble. The reaction will result in products that include a different pure element as well as a new aqueous solution.
Answer:
Explanation:
The capture of an alpha particle () by the is:
The capture of an alpha particle by the uranium produces an increase in the atomic number of the uranium in four (because of the two protons and two neutrons of the alpha particle) and an increase of the protons number in two.
Therefore, the nuclide is:
Hence, the correct option is the third option:
I hope it helps you!
Answer:
The new pressure of the gas in the chamber is 1,093.75 mmHg
Explanation:
The Gay-Lussac Law is a gas law that relates pressure and temperature to constant volume. This law says that the pressure of the gas is directly proportional to its temperature.
That is, if the temperature increases, the pressure increases, while if the temperature decreases, the pressure decreases. So the Gay-Lussac law can be expressed mathematically as follows:
Having an initial and an end state of a gas, the following expression can be used:
In this case:
- P1= 1560 mmHg
- T1= 445 K
- P2=?
- T2= 312 K
Replacing:
Solving:
P2=1,093.75 mmHg
<u><em>The new pressure of the gas in the chamber is 1,093.75 mmHg</em></u>
Answer: b) virus
explanation: viruses depend on the host cells that they infect to reproduce or “replicate”. though they can survive outside of a host, they cannot reproduce without a host.
Chlorine needs only one electron to complete valance shell and Na needs give up electron be get down to last complete valence shell. so Na+Cl