The answer is D. Because most islands have dormant volcanoes
The volume of 3.40 mol of gas at 33.3 C and 22.2 atm of pressure is 3.85 liter of gas. This problem can be solved by using the PV=nRT or V= nRT/V equation which is the relation between the molar volume, the temperature, and the pressure of gas. In this formula, P is the pressure, R is the universal gas constant ( 0.0821 atm L/mol K), n is the molecule amount, V is the molecular volume, and T is the temperature. The temperature used in this formula must be in Kelvin, therefore we have to convert the Celcius temperature into Kelvin temperature (33.3 C = 306.45 K).
<span>The calculation for the problem above: 3.4*0.0821*306.45/22.2 = 3.85 liter of gas.</span>
The answer is (1) natural transmutation. When Co-60 undergoes beta decay (be it beta positive or beta negative), the product is another element (Fe or Ni). Transmutation is when an element turns into another element via a nuclear process. Since this occurs without the aid of another agent that causes the nuclear change (e.g. a neutron source), it is natural transmutation.
Water has a density of around 1 g/mL. The density of HDPE varies depending on exact formulation and processing, but it typically is within the range of 0.93 to 0.97 g/mL. This means that HDPE is less dense compared to water.
Answer: K is bigger in atomic size. The metallic character increases as the size increases.
Explanation:
Reactivity of a metal is defined as the tendency of an element to lose electrons. The metallic character increases as we move down a group and it decreases as we move across a period.
When the size of an element increases, the valence electrons gets away from the nucleus and the tendency of an element to loose electrons increases.
In a group, the size of an element increases because there is an addition of new shell and electron is added in that shell.
Thus for alkali metals, the metallic character increases from Lithium to sodium to potassium and so on.
