Answer:
C. Protein
Explanation:
Enzymes are proteins that speed up reactions. Think of saliva and how it helps break down the food you eat.
A physical change is something that could be reverted back to its original form, while a chemical change is something that could not be reverted back when changed.
ex of physical change: ice - can be melted and then freeze to solid again
ex of chemical change: change of color, like adding food coloring in something and you cannot take out the color again
Answer:
The average speed should be 6mps (6 meter per second)
Explanation:
90 divided by 15 = 6
Matter is anything that "has mass and takes up space" or option B. Matter is everything, it does not need a physical state, it does not need two elements to combined chemically, and it also doesn't have to be important to human society. Mass has to have mass, and volume. Mass is the amount of weight a object has, and volume is how much space the object also has.
Hope this helps!
Answer:
6.57 L
Explanation:
First, calculate the <em>moles of hydrogen</em> produced, then use the Ideal Gas Law to calculate the <em>volume of hydrogen</em>.
Step 1. Write the <em>chemical equation</em>.
: 22.99
2Na + H₂O ⟶ 2NaOH + H₂
Step 1. Convert <em>grams of Na</em> to <em>moles of Na</em>
Step 2. Use the molar ratio of H₂:Na to convert <em>moles of Na</em> to <em>moles of H₂</em>.
Step 3. Use the Ideal Gas Law to calculate the <em>volume of hydrogen</em>.
<em>pV = nRT</em>