Answer:
please mark my answer brainliest
Explanation:
according to the formula...
density =mass/ volume...
density =21.0/2.00=10.5 g/ cm^3
Volt is the unit to measure cell potential.
Explanation:
The cell potential is the measure of potential difference in the two halves of the electrochemical cell.
It is the measure of how much voltage exists between the two halves of the battery. The unit of volt is joule/coulomb. The cell potential is measured by voltmeter.
The energy per unit charge from the oxidation-reduction reaction to drive the reaction is cell potential.
Answer:
e< d< b< c=f< a
Explanation:
Quantum numbers refers to values that exactly describe the energy of electrons within an atom or a molecule. Electrons are known to possess a set of four quantum numbers used in describing the energy state of such electron. These quantum numbers are solutions to the Schrödinger wave equation for the hydrogen atom.
In describing any electron within the atom, the relevant set of four quantum numbers are: principal quantum number (n), orbital, azimuthal, subsidiary or angular momentum quantum number (l), magnetic quantum number (ml), and spin quantum number (ms).
In the arrangement above, the electrons are arranged in order of increasing energy. Each arrangement of quantum numbers corresponds to a particular energy state of the electron.
The best and most correct answer among the choices provided by the question is the first choice "the powder catches fire"
Chemical change<span> is any </span>change<span> that results in the formation of new </span>chemical <span>substances. At the molecular level, </span>chemical change<span> involves making or breaking of bonds between atoms. These </span>changes<span> are </span>chemical<span>: iron rusting (iron oxide forms) gasoline burning (water vapor and carbon dioxide form)
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Answer: V= 3.13 L
Explanation: solution attached:
Use combine gas law equation:
P1 V1 / T1 = P2 V2/ T2
Derive to find V2
V2 = P1 V1 T2 / T1 P2
Convert temperatures in K
T1= 13.0°C + 273 = 286 K
T2= 22.5°C + 273 = 295.5 K
Substitute the values.
