I believe the answer is C, n = 3, l = 3, m = 3. The magnetic quantum number, or
<span>ml</span>, can only take values that range from <span>−l</span> to <span>+l</span>, as you can see in the table above.
For option C), the angular momentum quantum number of equal to ++2<span>, which means that <span>ml</span> can have a maximum value of </span>+2<span>. Since it is given as having a value of </span>+3**, this set of quantum numbers is not a valid one.
The other three sets are valid and can correctly describe an electron.
Answer:
A. BrF3 > PF5 > CF4
Explanation:
The vapor pressure of a gas is the number of times a given volume of the gas is as heavy as the same volume of hydrogen at a particular temperature and pressure.
The vapor pressure of a gas is related to its relative molecular mass as shown in the formulae:
Vapor pressure =1/2 * relative molecular mass of the gas.
In the question therefore, calculate the relative molecular mass of each of the substance and divide by two, you will get the vapor pressure.
V. P (PF5) = 126/2 = 63
V. P ( BrF3) = 136.9/2 = 68.45
V. P(CF4) = 88/2 = 44
In order of decreasing vapor pressure, BrF3 has high vapor pressure, followed by PF5 and then CF4.
BrF3 > PF5 > CF4
Heat of fusion is <span>the </span>heat<span> absorbed by a unit mass of a given solid at its </span>melting<span> point that completely converts the solid to a liquid at the same temperature. We use this concept to calculate the mass of copper. We do as follows:
H = m(Hfus)
112.4 = m (13.0) ( 1 mol / 63.55 g )
m = 549.4631 g -------> OPTION 3</span>
Answer:
An agricultural drone is an unmanned aerial vehicle used to help optimize agriculture operations, increase crop production, and monitor crop growth. Sensors and digital imaging capabilities can give farmers a richer picture of their fields.
Explanation:
Drones can help farmers to optimize the use of inputs (seed, fertilizers, water), to react more quickly to threats (weeds, pests, fungi), to save time crop scouting (validate treatment/actions taken), to improve variable-rate prescriptions in real time and estimate yield from a field.