Answer:
5.51g
Explanation:
Using the following formula:
Q = m × c × ∆T
Where;
Q = amount of heat in Joules
m = mass/weight of Aluminum
c = specific heat of Aluminum (0.900 J/g°C)
∆T = change in temperature.
Based on the information given in this question, Q = 175.6 joules, ∆T = 35.4°C, c = 0.900 J/g°C.
Using, Q = m × c × ∆T
175.6 = m × 0.900 × 35.4
175.6 = 31.86m
m = 175.6/31.86
m = 5.51g
The weight of the aluminum sample is 5.51g.
Answer:
because that is the last group the ones before it are more reactive im sorry if this not what you were looking for.
Answer:
Choice B., infrared radiation
Explanation:
A gas in atmosphere which allows the incoming of the solar radiation to reach Earth's surface and on the other hand also absorbs these radiation which are re-emitted as heat, trapping heat in atmosphere and causing temperature to rise is called green house effect.
<u>For example, carbon dioxide is a greenhouse gas which traps heat from sun resulting in the warming the planet
.</u>
<u>Thus, infrared radiations which is a source of heat is reflected back to the Earth’s surface by greenhouse gases.</u>
Answer:
the 4s subshell is lower in energy than the 3d subshell
Explanation:
In the element number 24 which is chromium
the electronic configuration should be according to Aufbau principle
will be = ![1s^22s^22p^63s^23p^64s^23d^4](https://tex.z-dn.net/?f=1s%5E22s%5E22p%5E63s%5E23p%5E64s%5E23d%5E4)
but in reality it is = ![1s^22s^22p^63s^23p^64s^13d^5](https://tex.z-dn.net/?f=1s%5E22s%5E22p%5E63s%5E23p%5E64s%5E13d%5E5)
The 6 electrons in the outermost shell will be divided as 5 in 3d subshell and 1 in 4s shell, because half filled orbital
will be more stable than
.
Answer:
nuclear
Explanation:
This is because when the protons and neutrons split the energy being released is heat, also known as nuclear fission.