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Leviafan [203]
3 years ago
9

Get correct for brainleist!

Chemistry
1 answer:
soldier1979 [14.2K]3 years ago
5 0
I would say d
Hope that helps :)
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Oxygen is needed to produce energy in eukaryotic cells. Which organelle would you think needs oxygen the most
bezimeni [28]
Mitochondria need the most oxygen
5 0
3 years ago
Which of the following statements describes the correct method of preparation of 1.00 L of a 2.0 M urea solution?
Zolol [24]

Answer:

To prepare 1.00 L of 2.0 M urea solution, we need to dissolve 120 g of urea in enough water to produce a total of 1.00 L solution

Explanation:

Molarity of a solute in a solution denotes number of moles of solute dissolved in 1 L of solution.

So, moles of urea in 1.00 L of a 2.0 M urea solution = 2 moles

We know, number of moles of a compound is the ratio of mass to molar mass of that compound.

So, mass of  2 moles of urea = (2\times 60.06)g=120 g

Therefore to prepare 1.00 L of 2.0 M urea solution, we need to dissolve 120 g of urea in enough water to produce a total of 1.00 L solution

So, option (C) is correct.

8 0
3 years ago
Based on the diagram below, how much of the excess reactant is left over? *
pantera1 [17]

Answer:

3 pieces of lunch-meat and 2 slices of cheese

Explanation:

You have enough bread to make 3 sandwiches

You have enough lunch-meat to make 4 sandwiches

You have enough cheese to make 5 sandwiches

In all you have enough material to make 3 sandwiches

so if you subtract three from each number above you will have no bread, enough lunch-meat to make one sandwich and enough cheese to make two sandwiches

luch-meat for one sandwich is: 3 pieces

Cheese for two sandwiches is:  2 pieces

5 0
3 years ago
Before measuring the absorbance of a solution with the ocean optics spectrophotometer, it is important to run a blank sample of
Strike441 [17]
I think the most appropriate answer is: the solvent being used in the experiment
<span>To correct for any light absorption not originating from the solute you will need to calibrate the tools with a solution that most similar to the sample.
Blank covete or standard solution can be used, but it was not ideal. By using the solvent as calibration, you can remove the reading from the solvent so your result only comes from the sample.

</span>
5 0
3 years ago
Which of the following could be considered a scientific method? 01.01 the science of chemistry
d1i1m1o1n [39]

Answer:

a) the ability to extend the theory to make predictions

b) it is explanatory

Explanation:

Could be a Hallmark of a Scientific Theory: a & b

-Quizlet

3 0
2 years ago
Read 2 more answers
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