1 is C. 2 is C. 3 is D. 4 is B. 5 is D. 6 is C. 7 is A.
I think there are 3
1) lack of membrane-bound organelles
2) unicellular
3) small (usually microscopic) size.
Answer:
318 kPa
Explanation:
Step 1: Given data
- Initial volume (V₁): 0.375 L
- Final pressure (P₂): 95.5 kPa
- Final volume (V₂): 1.25 L
Step 2: Calculate the initial pressure of the gas
Assuming constant temperature and ideal behavior, we can calculate the initial pressure of the gas using Boyle's law.
P₁ × V₁ = P₂ × V₂
P₁ = P₂ × V₂ / V₁
P₁ = 95.5 kPa × 1.25 L / 0.375 L = 318 kPa
Answer:
<em>I disagree with the student's claim</em>
<em></em>
Explanation:
<em>From basic chemistry, the rate of chemical reaction increases with an increased surface area.</em>
<em>This simply means that a powdered substance will react faster than a small pellet of the same substance.</em>
Let us break this down further. The pellet has a smaller exposed surface per grain to the solvent, here is how. Imagine the powdered substance bunched up together to make the small pellet, grains at the center of the pellet is blocked by other grains around it, and will take time before it comes in contact with the solvent. For the powdered grains, each grain has a surface independently exposed to the solvent and can easily come in contact with the solvent, taking less time to react with the solvent.
Technically, a powdered substance has more exposed surface area and logically will take a shorter time for the reaction to be complete.
Answer: Electons and protons have similar charges, and are therefore attracted to one another... I think
Explanation:
