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
strojnjashka [21]
3 years ago
6

Cho 2.3 gam natri vào 100ml nước . Tính nồng độ dung dịch thu được ( C% )

Chemistry
1 answer:
Anton [14]3 years ago
8 0

Answer:

maybe speak in english than we can understand and help you sorryy

You might be interested in
What are all synthetic materials made from?
dolphi86 [110]

Answer:

Natural resources

Explanation:

4 0
3 years ago
A slender uniform rod 100.00 cm long is used as a meter stick. two parallel axes that are perpendicular to the rod are considere
kvv77 [185]
Refer to the diagram shown below.

The second axis is at the centroid of the rod.
The length of the rod is L = 100 cm = 1 m

The first axis is located at 20 cm = 0.2 m from the centroid.
Let m =  the mass of the rod.

The moment of inertia about the centroid (the 2nd axis) is
I_{g} =  \frac{mL^{2}}{12} = (m \, kg) \frac{(1 \, m)^{2}}{12} =  \frac{m}{12} \, kg-m^{2}

According to the parallel axis theorem, the moment of inertia about the first axis is
I_{1} = I_{g} + (m \, kg)(0.2 m)^{2} \\ I_{1} =  \frac{m}{12}+ 0.04m = 0.1233m \, kg-m^{2}

The ratio of the moment of inertia through the 2nd axis (centroid) to that through the 1st axis is
\frac{I_{g}}{I_{1}} =  \frac{0.0833m}{0.1233m} =0.6756

Answer:  0.676

6 0
3 years ago
Read 2 more answers
Atoms of metallic elements tend to
melomori [17]

Answer:

D

Explanation:

One of the properties of metals is their abilities to form a stable compounds by losing electron(s). Metals form positive ions (cations) when they lose electron(s).

6 0
3 years ago
Why are numbers placed before the elements and molecules in a<br>chemical equation?​
Neko [114]

Answer:

the are coefficients for the atom. the tell how many there are.

Explanation:

they tell you how many atoms there are of its type.

ex. 4 C²H³. there are 4 of the c² and h³ (couldn't find a way to use subscript so used the power signs to show.)

7 0
3 years ago
Why are hydrogen bonds important for the properties of water?
zavuch27 [327]
Water has the special type of attraction called Hydrogen bonding.  The bonds between the Hydrogen and the Oxygen in each water molecule make a super dipole because the Oxygen atom is way more electronegative than the hydrogen atom.  These OH bonds can then be attracted to other H2O molecules.  If you have ever poured water up to the brim and there is  little bit of water that is poking above the top, hydrogen bonding keeps those water molecules from spilling
5 0
3 years ago
Other questions:
  • Please help with these asap
    13·1 answer
  • “Highest molecular motion, highest kinetic energy, no forces of attraction, least dense packaging of molecules.” which state of
    5·2 answers
  • Sound is not part of a electromagnetic spectrum because
    10·1 answer
  • H2O has a mc021-1.jpgHvap = 40.7 kJ/mol. What is the quantity of heat that is released when 27.9 g of H2O condenses?
    9·2 answers
  • Archimedes used what method to find the volume of the golden crown?
    8·1 answer
  • How many electrons does titanium have in the D orbital in its ground state electron configuration
    7·1 answer
  • How does reactants in photosynthesis combine to make atoms molecules
    5·1 answer
  • What is the temperature at which all molecular motion stops and there is no thermal energy?
    13·2 answers
  • How many moles of oxygen gas are required to form 55g of carbon monoxide gas
    12·1 answer
  • What are the radicals?Write their types with four examples.​
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!