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
Anon25 [30]
2 years ago
14

PLSSSSSSSS ANSWERRRRR

Chemistry
1 answer:
pav-90 [236]2 years ago
5 0
Your correct! Radio waves I’m pretty sure!
You might be interested in
A chemistry student must write down in her lab notebook the concentration of a solution of sodium hydroxide. The concentration o
taurus [48]

Answer:

The concentration the student should write down in her lab is 2.2 mol/L

Explanation:

Atomic mass of the elements are:

Na: 22.989 u

S: 32.065 u

O: 15.999 u

Molar mass of sodium thiosulfate, Na2S2O3 = (2*22.989 + 2*32.065 + 3*15.999) g/mol = 158.105 g/mol.

Mass of Na2S2O3 taken = (19.440 - 2.2) g = 17.240 g.

For mole(s) of Na2S2O3 = (mass taken)/(molar mass)

= (17.240 g)/(158.105 g/mol) = 0.1090 mole.

Volume of the solution = 50.29 mL = (50.29 mL)*(1 L)/(1000 mL)

= 0.05029 L.

To find the molar concentration of the sodium thiosulfate solution prepared we use the formula:

= (moles of sodium thiosulfate)/(volume of solution in L)

= (0.1090 mole)/(0.05029 L)

= 2.1674 mol/L

6 0
3 years ago
Draw the Lewis structure for the polyatomic formate anion. Be sure to include all resonance structures that satisfy the octet ru
givi [52]

Answer:

Lewis structure of polyatomic formate anion.

Explanation:

To draw Lewis structure for any chemical species,

1)Count the total number of valence electrons present in it.

This can be obtained by adding valence electrons of each constituent atom.

2)Arrange those valence electrons in such a way that each atom should attain eight electrons around it to satisfy octet theory.

The structure of formate ion and its Lewis structure are shown below:

HCOO- is the formate ion.

It has total:

1+4+6+6+1 = 18 valence electrons.

Since, hydrogen has one, carbon has four and oxygen has six valence electrons and the charge of the anion is one.

Arrange this 18 electrons in such a way that each atom should get 8 electrons around it.

Resonance structures of formate ion:

8 0
2 years ago
Write the name for the compound Al₂S₃
Svetlanka [38]

Answer:

Uh Joe stinky?

Explanation:

7 0
3 years ago
Read 2 more answers
What is detritivores?<br> (Middle school Question)
nasty-shy [4]
Detrivores; i.e, Earth Worms, Rolly Pollies etc.
7 0
3 years ago
Read 2 more answers
Write the formula for compound formed between pb^2+O^2
Zarrin [17]
Its what the formula of a coupon between PB to plus plus to
7 0
3 years ago
Other questions:
  • Arrange the ions N3-, O2-, Mg2 , Na , and F- in order of increasing ionic radius, starting with the smallest first. Arrange the
    14·1 answer
  • an aqueous solution of NaOh is used as a drain cleaner.If the concentration of OH^- ions in this solution is 1×10^-5,the concent
    15·1 answer
  • The first method of determining the chemical composition of substances in space was to
    9·2 answers
  • Be sure to answer all parts. Dimercaprol (HSCH2CHSHCH2OH) was developed during World War I as an antidote to arsenic-based poiso
    13·1 answer
  • How many molecules are in 50 grams of CO2?
    10·2 answers
  • I need help with number 4 I mean k think I'm right
    6·1 answer
  • Hydrogen gas has a density of 0.090 g/L, and at normal pressure and -1.72 °C one mole of it takes up 22.4 L.
    8·1 answer
  • Which two have to do with Movement of Galaxies? (pick 2)
    11·1 answer
  • I<br> I-U-I<br> I-U-I<br> H<br> -U-I<br> H-C-HH-C-H<br> I<br> U-U-I<br> Ti<br> I-U-I
    6·1 answer
  • How many grams of water, H20 are needed if 88<br> grams of CO2 gas are produced?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!