1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
koban [17]
3 years ago
10

Dung dich NaCl 0.9% có 0.9g NaCl trong 100 mL dung dịch

Chemistry
1 answer:
Alenkasestr [34]3 years ago
8 0

Answer:

Explanation:  Độ thẩm thấu của NaCl 0.9% và glucose 5% lần lượt là 308 và 278 ... Dung dịch natri clorid sử dụng trong pha thuốc tiêm truyền thường dùng

You might be interested in
For fusion reaction to happen, matter needs to be in which of the following states?
Tpy6a [65]
The matter is going to have to be in a <em>plasma </em>state! =)
7 0
3 years ago
Read 2 more answers
In general, if a reaction is spontaneous, the reactants possess more free energy than the products.
Inga [223]

In general, if a reaction is spontaneous, the reactants possess more free energy than the products.  

<u>TRUE  </u>

FALSE

6 0
3 years ago
Give examples which indicate that nylon fibres are very strong.​
Readme [11.4K]

Explanation:

is used for making ropes, used for climbing rocks and for making parachutes. Their usage shows that nylon fibres have high tensile strength

3 0
2 years ago
Calculate the volume in mL of 0.279 M Ca(OH)2 needed to neutralize 24.5 mL of 0.390 M H3PO4 in a titration.
Vsevolod [243]

The volume of the 0.279 M Ca(OH)₂ solution required to neutralize 24.5 mL of 0.390 M H₃PO₄ is 51.4 mL

<h3>Balanced equation </h3>

2H₃PO₄ + 3Ca(OH)₂ —> Ca₃(PO₄)₂ + 6H₂O

From the balanced equation above,

  • The mole ratio of the acid, H₃PO₄ (nA) = 2
  • The mole ratio of the base, Ca(OH)₂ (nB) = 3

<h3>How to determine the volume of Ca(OH)₂ </h3>
  • Molarity of acid, H₃PO₄ (Ma) = 0.390 M
  • Volume of acid, H₃PO₄ (Va) = 24.5 mL
  • Molarity of base, Ca(OH)₂ (Mb) = 0.279 M
  • Volume of base, Ca(OH)₂ (Vb) =?

MaVa / MbVb = nA / nB

(0.39 × 24.5) / (0.279 × Vb) = 2/3

9.555 / (0.279 × Vb) = 2/3

Cross multiply

2 × 0.279 × Vb = 9.555 × 3

0.558 × Vb = 28.665

Divide both side by 0.558

Vb = 28.665 / 0.558

Vb = 51.4 mL

Thus, the volume of the Ca(OH)₂ solution needed is 51.4 mL

Learn more about titration:

brainly.com/question/14356286

5 0
2 years ago
If the initial concentration of a is 0.00540 m, what will be the concentration after 795 s?
zavuch27 [327]
<span>Feb 19, 2014 - The units of k tell you that this is a second order reaction. So, to solve this, you need to use the integrated rate law for a 2nd order reaction: 1/[A] = kt + 1/[A]o 1/[A] = 0.540/Ms (835 s) + 1/0.00640 1/[A] = 607 [A] = 1.65X10^-3 M.</span><span>
</span>
7 0
3 years ago
Other questions:
  • Can anyone help me? it's chemistry​
    15·1 answer
  • URGENT PLZ HELP AHHHHHHH
    10·1 answer
  • The mass of an object is 100 mg. What is the object's mass in kg?
    11·2 answers
  • How many moles are in 82 g of water?
    8·1 answer
  • You are asked to make 10 moles of iron (Fe) from iron oxide (fe203) and excess carbon monoxide (CO).
    13·1 answer
  • Unscramble the letters in Column A to form the correct word being described
    15·1 answer
  • All + HgCl, --------&gt; AICI,
    9·1 answer
  • Why do we need digital technology in school?​
    15·1 answer
  • All participants in the Genius dog challenge are border collies which some experts think are the what breed of dog?
    6·1 answer
  • What is one advantage of asexual reproduction?
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!