C i think but you should pick it anyway
A. Heat is transferred from your hand to the ice cube.
Answer: The correct option is (c). The total pressure doubles.
Solution:
Initially, only 4 moles of oxygen gas were present in the flask.
(
) ( according to Dalton's law of partial pressure)
....(1)
= Total pressure when only oxygen gas was present.
Final total pressure when 4 moles of helium gas were added:
partial pressure of oxygen in the mixture :
Since, the number of moles of oxygen remains the same, the partial pressure of oxygen will also remain the same in the mixture.
= Total pressure of the mixture.
from (1)
On rearranging, we get:
The new total pressure will be twice of initial total pressure.
Answer:
A lithium atom has 3 protons and 3 electrons. It can lose one of its electrons, making it an ion. It now has more positive protons than electrons so it has an overall positive charge. Therefore it is a positive ion.
Explanation:
Lithium, an alkali metal with three electrons, is also an exception to the octet rule. Lithium tends to lose one electron to take on the electron configuration of the nearest noble gas, helium, leaving it with two valence electrons.
Translation: List at least 5 objects that were formerly made from another material and are now made from a polymer. Identify what polymer it is
Answer:
Five object now replaced with polymers
1) automobile body parts. (polypropylene, polyurethane and PVC)
2)TV cabinets. (polystyrene polymer)
3) composites for golf clubs. (carbon fibre reinforced polymer CFRP)
4) fibers for clothing and carpet. (acrylic and nylon)
5) foams for coffee cups (polystyrene)
