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GalinKa [24]
2 years ago
14

I will give brainliest to whoever is first ❗️❕❗️❕❗️❕❗️

Chemistry
2 answers:
Vladimir79 [104]2 years ago
6 0
<h2>C.</h2><h2 /><h3>Light that bounces off a smooth surface bounces down and back up.</h3><h3 />

But, an irregular surface, for every bump, the light bounces down up down up down up.

<h3>In conclusion, C is the best answer.</h3><h3></h3>

I hope this helped! +*♡

salantis [7]2 years ago
5 0
3rd Answer. Rays reflect in random directions
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In synthesis reactions, there are always more _____________ than ________________.
nydimaria [60]

Answer:

A

Explanation:

always more reactants than products

4 0
2 years ago
(a) The absorbance of mixture at 400 nm was 0.40.
laiz [17]

Answer:

0.1 g/dl

Explanation:

The standard curve is a graph that relates the absorbance at 400 nm with the concentration of haemoglobin in mg/dl. To obtain the concentration from the absorbance value, we enter in the x-axis (absorbance at 400 nm) with the value 0.40 (the line between 0.2 and 0.6), we extrapolate the line to the curve and read the correspondent value on y-axis (concentration in mg/dl): 100 mg/dl.

So, we convert the concentration from mg/dl to g/dl by dividing into 1000:

100 mg/dl x 1 g/1000 mg = 0.1 g/dl

Therefore, the concentration of haemoglobin of the patient is 0.1 g/dl.

6 0
2 years ago
Explain why the 4s sublevel fills before the 3d begins to fill as electrons are added.
tamaranim1 [39]

Answer: The energy of the 4-s subshell is lower than the energy of 3-d subshell.

Explanation:

During the filling of electrons in subshells, the lower energy levels are filled before the higher energy levels. Also known as Aufbau principle.

Energy of the sublevel = (n + l)

where : n = Principal quantum number

             l = Azimuthal quantum number(s=0,p=1,d=2,f=3)

Energy of 4-s subshell= (4+0) = 4

Energy of 3-d subshell=(3+2) = 5

Energy of 4-s subshell is lower than the energy of 3-d subshell, that is why 4s orbital is filled before the 3-d subshell.

4 0
3 years ago
Read 2 more answers
Help! Drag and drop the answer into the box to match each method of how to separate solutions to its description.
Flura [38]

Answer:

1) D      2) A       3) C

Explanation:

7 0
2 years ago
Something that causes a response in an organism is called a(n) _____.
fomenos
A Stimulus is the answer
7 0
3 years ago
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