Answer: Index fossil correlation
Relative dating refers to the age estimation method in which the order of the past events is determined to compare the age of an object, rock or organism with the respect to the other. This method gives the estimated or approximate age of the entity under consideration. It does not give the absolute age. Index fossils are the fossils which are found in a particular geological time. They have a short life span and wide geographical distribution. These fossils can be used to determine the relative age. As, these fossils can be compared with the layers of strata and rocks, where they are found, to know their approx age.
Answer:
gas is the correct answer.
Explanation:
Answer:
A. = 143
B. = 8
C. =32
Explanation:
Number of neutron = mass number - atomic number
Explanation:
The given data is as follows.
= 2.34 kPa = 2.34 \times 1000 Pa = 2340 Pa = 0.0231 atm
= (20 + 273) K = 293 K
= 2537.4 kJ/kg = 2537400 J/kg
= ?, = (40 + 273) K = 313 K
According to Clausius-Clapeyron equation,
=
=
= atm
or, = 18846.45 kPa
Thus, we can conclude that the vapor pressure at is 18846.45 kPa.
The atomic number of an element is characteristic to that element. Atomic number is the number of protons of that element.
Mass number is the sum of protons and neutrons of the element.
since protons and neutrons have a mass of 1 unit each, they together make up the mass of the element.
atomic number - number of protons - 92
mass number - number of neutrons + protons = 234
number of neutrons = mass number - atomic number
neutrons = 234 - 92 = 142
answer is 142