Answer:
D
Explanation:
Empirical formula is the simplest whole number ratio
E.g
The empirical formula of benzene (C6H6) is CH
Cesium is the element in group 1A that has the largest atomic radius, with the number of 225.
Rubidium has 211, Potassium 196, and Sodium 154.
Answer: 3.94 atm
Explanation:
Given that,
Initial pressure (P1) = 3.80atm
Initial temperature (T1) = 25°C
since the standard unit of temperature is Kelvin, convert 25°C to Kelvin
(25°C + 273= 298K)
Final pressure P2 = ?
Final temperature T2 = 36°C
(36°C + 273= 309K)
Since pressure and temperature are given while volume is held constant, apply the formula for Pressure's law
P1/T1 = P2/T2
3.80 atm / 298K = P2 / 309K
To get the value of P2, cross multiply
3.80 atm x 309K = P2 x 298K
1174.2 atm•K = 298K•P2
Divide both sides by 298K
1174.2 atm•K/298K = 298K•P2/298K
3.94 atm = P2
Thus, the final pressure is 3.94 atm
Answer is number 4.
The above diagram shows a part of our solar system.The planet which is very close to the sun is Mercury. Hence, No.1 is Mercury and 2 and 3 are Venus and Earth respectively. Moon is an astronomical body which orbit planet Earth. Hence moon should be shown near to the planet Earth.
