Answer:
He was the first scientist to observe and describe bacteria and protozoa by looking at a drop of water from a pound under a microscope. He also was the one to build the first compound microscope.
Hope this helps :)
Answer:
The method used for measuring the small distance is by using the scales and the distance measured over long distance is by inch tape or measuring tape.
Explanation:
There are 2 Ca, 4 H (2*2) and 4 O (2+2) on the left hand side. So there should be the same number of atoms 2Ca and 4(O+H) on the right hand side. The reaction is a synthesis (making something new), rather than a decomposition (destroying something).
The answer is Two molecules of Ca(OH)2 should be produced during the synthesis reaction.
The final concentration after 172 seconds is 1.15 M. To obtain this answer, use the the integrated rate law for the order of reaction. Based on the problem, this is a second order reaction. The units of the rate constant also support that it is a second order reaction.
Further Explanation:
The solution to this problem is straightforward.
- Identify the integrated rate law for the corresponding order of reaction.
- Substitute the given values into the integrated rate law equation.
- Use algebra to solve for the unknown, C(f).
STEP 1: Since the reaction is a second order reaction, the integrated rate law will be:

where:
C(f) is the final concentration
k is the rate constant
t is the time
C(i) is the initial concentration
STEP 2: Plugging in the values given in the problem into the equation, the following equation should be obtained:

STEP 3: Using algebra to solve for C(f):

Since the given values only have 3 significant figures, the final answer must be expressed with 3 significant figures as well.
Therefore,

Learn More
- Learn more about half life brainly.com/question/4318844
- Learn more about first order reaction brainly.com/question/8139015
- Learn more about rate law brainly.com/question/1450796
Keywords: rate law, second order, integrated rate law