Answer:
As you move across a period, the atomic mass increases because the atomic number also increases. ... The atomic mass for any given atom mainly comes from the mass of the protons and neutrons.
Explanation:
Answer: C
Earths atmosphere maintains a stable temp
Answer:
A hydraulic press uses water as the pressing force to push against something
The glowing splint in the reaction of hydrogen gas and oxygen gas to form water provides the activation energy for the reaction.
<h3>Reaction of hydrogen gas and oxygen</h3>
A chemical reaction involves the combination of two or more substances to yield a new substance which is different from the starting materials. It may also involve the break up a substance.
Since energy is required for a chemical reaction to take place, the glowing splint in the reaction of hydrogen gas and oxygen gas to form water provides the activation energy for the reaction.
Learn more about activation energy: brainly.com/question/11334504