The answer is b . when you increase the temperature your chemical the particles are getting energized and will be able to move around and they need to move around in order to be able to collide with energy that is greater than itself<span />
Answer:
a, they are the building blocks of proteins.
Explanation:
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~mina
Answer:
nobody can answer this question because you have to draw model and you can't do it on here sorry .
Explanation:
The elements that have the most similar chemical properties are those that have the same number of valence electrons. Elements with the same number of valence electrons can be found in the same column or "group" on the periodic table. The elements that satisfy this criterion are Mg, Sr, and Ba.
Answer:
The ratio of the number of moles in the heated balloon to the original number of moles is less than 1.
Explanation:
When the air of the hot-air balloon is heated, its density decreases. It means that the molecules inside the balloon (at 58°C) occupy a bigger volume than the same amount of molecules at the beginning of the process (which are at 21°C). Due to the fact that the balloon envelope is flexible but not infinitely, part of the molecules tha were originally inside the balloon must flow out in order to release some additional space inside the balloon for the remaining molecules. This extra space makes possible a relatively constant difference of densities between the air inside and the air outside, which gives buoyancy to the balloon. And this is why the amount of moles in the balloon is slightly lower after heating than it was originally.