He ^ 2+
Helium has two electrons the 2+ means that it has lost its two electrons leaving it with none.
Answer:
Gas molecules move at different speed at a given temputure bc as temp increases they move faster
Explanation:
they move faster bc they gain kinetetic energy
Answer: The solubility of X in water is
g/ml.
Explanation:
The given data is as follows.
Volume of sample water = 46 ml
Temperature = 
After vaporization, washes and then drying the weight of mineral X = 0.87 g
This means that 46.0 ml of water contains 0.87 g of X. Therefore, grams present in 1 ml of water will be calculated as follows.
1 ml of water = 
=
g/ml
Therefore, we can conclude that solubility of X in water is
g/ml.
Answer:
K2 +Br ->2KBr
K + I ->KI
actually I don't know the e option but I had tried can u pls balance it urself
Higher and lower temperatures