12
Explanation:
Look at the number directly after the number you want to keep. I'm your case you want to keep the first two numbers and the number directly after is 4 so there is no need to round up. Keep your 12 without a decimal.
The most basic level of organization that is involved in converting fuel or food into forms of energy, are found and compose living things. These are called cells.
Answer:
It is not true that this is an example of a chemical reaction. This is a typical example of physical reaction.
Most physical changes are often phase changes.
A phase change is a change in the physical state of a body.
In this change, it is from solid to liquid.
Now new substances are formed.
When substances are changed from one form to another, it is a physical change.
In a chemical change, a new substance is formed at the end of the process.
Explanation:
Hydrogen gas reacts with oxygen gas to form water according to the equation
From the coefficients in the reaction equation, we can see that it takes two molecules of hydrogen to react with one molecule of oxygen. Since we begin with equal amounts of both gasses, we can conclude that hydrogen is the limiting reactant because we use it up first. Thus, we use hydrogen for our stoichiometry that follows.
Thus, the answer is B, 6 water molecules are produced with hydrogen being the limiting reactant