Answer:
At 3 mmHg and 50°C water exists as a <em><u>gas</u></em>.
The one element that is less reactive than the others is Selenium.
Examples of chemical change : 1.food scraps 2. gasoline 3. rust.
examples of physical change : 1. juice box. 2. water. 3. rubbing alcohol.<span />
THIS IS AN COMBINATION REACTION SO3 Combined with H2O to form Sulfuric acid
Yes, because the balloon with air has a greater density than the empty balloon.Because there is a higher density in one balloon then the weight of the balloon will change
