Answer:
Q = 19255.6 j
Explanation:
Specific heat capacity:
It is the amount of heat required to raise the temperature of one gram of substance by one degree.
Formula:
Q = m.c. ΔT
Q = amount of heat absorbed or released
m = mass of given substance
c = specific heat capacity of substance
ΔT = change in temperature
Given data:
Mass of water = 46 g
change in temperature = ΔT = 100-0.0 = 100 °C
Heat absorbed by water = ?
Solution:
Specific heat capacity of water = 4.186 j/g. °C
Q = m.c. ΔT
Q = 46 g×4.186 j/g. °C×100 °C
Q = 19255.6 j
To determine the number of dna molecules that can be stacked as requested in this item, we convert the given measurements in a single unit. For simplicity, we convert all the lengths to meters.
Length of DNA molecule = (2.5 nm)(1 x 10^-9 m/1 nm) = 2.5 x 10^-9 nm
Height of a person = (5 ft 10 in)(12 inches/ 1ft)(2.54 cm/1 in)(1 x 10^-2 m/ 1 cm)
= 1.778 m
Then, divide the height of the person by the length of a single DNA molecule.
n = 1.778 m / (2.5 x 10^-9)
n = 7.112 x 10^8
Hence, the number of DNA would be 7.112 x 10^9.
Properties of the following are:
Alpha particle - positively charged particle (+) that consists of two electrons and two neutrons.
Cathode rays - it is the stream of electrons (negatively charged) found in vacuum.
Protons - are particles that carry positive charge and is present inside the nucleus of an atom.
Electrons - are particles that carry negative charge and is present in the orbits of the atom.
Neutrons - electrically neutral particle (0 charge) present inside the nucleus of an atom. However, it has its own mass.
The best and most correct answer among the choices provided by the question is the third choice. A theory stating <span>particles of all matter are in constant random motion would be the kinetic theory. I </span><span>hope my answer has come to your help. God bless and have a nice day ahead!</span>
