1. A weather balloon is filled with 125.0 L of He and launched from sea level (T = 20.0°C, P = 755 torr).
The atmospheric pressure in the eye of a hurricane is found to be 26.6 inches of
mercury, which is equivalent to Earth. If the atmospheric pressure at 30.0 km is
28.0 torr and the temperature is -39.0 °C, what is the volume of the balloon
when it bursts?

explanation:

venn diagram is pictorial representation with of circles showing the relation between two finite sets or things. the intersection part of two circles conveys the relation present in between those sets or things.

here in the venn diagram of sand and salt two circles represent sand and salt. but the area falling under the intersection of these circle represents the mixture of sand and salt.

so, in a venn diagram the mixture will be placed in a middle that is in between the intersection of two circles.

ca has a crystalline lattice with positive ions (since it is a metal, metals are positively charged) and electrons flow freely in its structure since the ca atoms have a large nuclear radius so the electrons are not tightly held, therefore the electrons can flow freely since they are not being highly attracted by the nucleus. moreover, one of the properties of metals are that they are conductors of electricity, thus proving ca is the element.