The predicted order of ionization energies is Li > Na > K > Rb
<em>Atomic size increases as you go down a Group</em> (see image). We are adding electrons to increasingly larger shells.
The valence electrons are further from the attraction of the nucleus, so they are less tightly held.
Thus, <em>Li has the highest ionization energy</em> and <em>Rb the lowest</em>.
Answer:
H1 = 63.3 kJ
Explanation:
When the steam at 100C contacts your skin, it is first condensed to water at 100C. The heat involved with this change in state is calculated using the latent heat of vaporization:
Q = ML = (25.0 g)(2.256 kJ/g) = 56.4 kJ
The water at 100C is then cooled to 34C. The heat involved with this temperature change is calculated using the specific heat capacity. (Because a temperature <em>change </em>is used here, it is not necessary to convert °C to K in order for the units to properly cancel)
Q = mcΔt = (25.0 g)(1kg/1000g)(4190Jkg⁻¹K⁻¹)(100C - 34C) = 6913.5 J = 6.9135 kJ
The total heat H1 that is transferred to the skin is the sum of the two heat values above:
H1 = (56.4 kJ) + (6.9135 kJ) = 63.3 kJ
If the net forced is doubled , the acceleration would also be doubled. F= M,A,F/M = a, 2F/M=2A. sorry if that doesn’t make sense i tried
Mass number is sum of protons and neutrons so 22+26
The sum would be 48
Mass number is 48
Answer:
- <em>Sample X</em>, contains the most heat.
Explanation:
In thermodynamics, the <em>heat content</em> of heat of a system or a substance is described by the term enthalpy.
The heat content (enthalpy) is an extensive property, meaning that it is dependent on the amount of substance.
More substance more heat energy content.
Heat content is also related with the temperature. The higher the temperature the greater the kinetic energy and the higher the heat content.
Since, sample X and sample Y are both at the same temperature of 42°C, this variable does not differentiate the heat content of such samples.
Since, the sample X has more volume than sample Y, as per the previous conclusion that the more substance the more heat energy, you can certainly asses that the former contains the most heat.