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amm1812
3 years ago
13

29 POINTS!!!!!! AND WILL MARK BRAINLIEST!!!!

Chemistry
1 answer:
LenaWriter [7]3 years ago
3 0

Answer:

the answer is D

Explanation:

ur welcome, can i get brainliest too?

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What is the concentration, in millimolar, of a 1 mg/ml solution of NaCl (molecular weight = 58 Da)?
sineoko [7]

Explanation:

Relation between molarity and molar mass is as follows.

             Molarity = \frac{mass}{\text{molar mass}} \times \frac{1000}{V (in ml)}

It is given that mass is 1 mg/ml which is also equal to 10^{-3} g.

Molecular mass = 58 Da = 58 g/mol

Volume = 1 ml

Therefore, calculate molarity as follows.

         Molarity = \frac{mass}{\text{molar mass}} \times \frac{1000}{V (in ml)}

                       = \frac{10^{-3}g}{58 g/mol} \times \frac{1000}{1 ml}  

                       = 0.0172 molar

It is known that 1 molar equals 1000 millimolar.

So,               0.0172 molar = 0.0172 molar \times \frac{1000 millimolar}{1 molar}

                                          = 17.2 millimolar

Thus, we can conclude that the concentration of given solution is 17.2 millimolar.

6 0
3 years ago
Part D
qwelly [4]

Answer:

Explanation:

The  number  on the top  right  of  the  symbol shows  ATOMIC NUMBER , if it is written alone only one digit or number overall .

And if the  number is also in bottom left then bottom left number will be ATOMIC NUMBER and top right will be MASS NUMBER

Hope  this will help you *-*

7 0
3 years ago
How are smooth muscles different from skeletal muscles
svlad2 [7]
Skeletal muscles have striated structure similar to cardiac muscles. But smooth muscles are spindle shaped and feature no striations.
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4 years ago
What is the main way in which heat transfer occurs in liquid and gases
KengaRu [80]
The main way heat is transferred in liquids and gases is through convection currents.
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Traveling at 60 miles per hour how many feet can you travel in 22 minutes?
pychu [463]
1 mile = 5280 feet
So, 65 mph = 343,200 fph or 5,720 fpm or 125,840 feet in 22 minutes,
hope this helps :))
7 0
3 years ago
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