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
SVEN [57.7K]
3 years ago
15

Whats the formula for selenium pentaoxide, iodine trichloride, zinc (1) nitride, chromium (III) bicarbonate, and there molar mas

s
Answer one of them plz and thx
Chemistry
1 answer:
Phoenix [80]3 years ago
3 0

Answer:

1) Se2O5

2) I2O6

3)Zn3n2

4) Cr(HCO3)3

Explanation:

selenium pentaoxide (= also called diselenium pentoxide)

= Se2O5

⇒ Se = 78.97 g/mol

⇒ O = 16 g/mol

⇒ 2*78.97 + 5*16 = 237.94 g/mol

iodine trichloride

= I2O6

⇒ I = 126.9 g/mol

⇒ Cl = 35.45 g/mol

⇒ 2* 126.9 + 6 * 35.45 = 466.5 g/mol

zinc (1) nitride does not exist  (it's Zinc(ii)nitride

The oxidation number for zinc is always 2

Zn3n2

⇒ Zn = 65.38 g/mol

⇒ N = 14 g/mol

⇒3*65.38 + 2* 14 = 224.14 g/mol

chromium (III) bicarbonate

Cr(HCO3)3

⇒ Cr = 52 g/mol

⇒ H = 1.01 g/mol

⇒ C = 12 g/mol

⇒ O = 16 g/mol

52 + 3*1.01 + 3*12 + 6*16 = 235.03 g/mol

You might be interested in
What is the significance of the Galápagos Islands to the theory of evolution
Aloiza [94]
The importance of the Galapagos to Darwin theory is chances  Darwin discovered several species of finches that varied from island to island .
A big part of reason it is so famous is because of Darwin finches.
which are 12 <span>species ,also the Darwin theory is  only gradually accepted because people don't believe in them today</span>
3 0
3 years ago
E What caused the little puddle of water to appear under the syringe tip? its for sciences ​
fredd [130]

LMBO, for science.

Answer:

<em>The increase in kinetic energy leads to leakage of water from the syringe. When the outside temperature is more than the liquid temperature, say the syringe is out in sunshine, then the liquid becomes slightly warmer.</em>

3 0
3 years ago
Solid sulfur dioxide, SO₂(s)
natali 33 [55]
A - Sulfur dioxide is an ion because it contains 2 or more elements, and it is a solid
4 0
2 years ago
1. To form a solution, ________.
adoni [48]
1.one substance must dissolve another : the solvent breaks the the solute causing it to dissociate into the solvent it can be both solids or gases that dissolve in the solute

2.the melting point will be higher than 100 degrees as the salt causes the solution to gain a higher melting point

3.either released or absorbed : energy is required to dissolve the solute but the solute may also release energy

4.the salt dissolved most quickly in the warm water : as there is more energy for the solute to dissolve 

hope that helps 
3 0
3 years ago
Read 2 more answers
Formation of magnesium chloride​
Shkiper50 [21]

-Pure magnesium is commonly made by separating it from seawater. This process is known as electrolysis. The liquid magnesium formed is cooled into convenient blocks of metal known as ingots. The chlorine gas is recycled to form hydrochloric acid for the production of more magnesium chloride.

5 0
2 years ago
Other questions:
  • What will be the effect on the concentration of NH3 if the pressure decrease
    9·2 answers
  • Lt takes 4 hr 39 min for a 2.00-mg sample of radium-230 to decay to 0.25 mg. what is the half-life of radium-230?
    6·1 answer
  • Which scientist established the law of octaves?
    12·2 answers
  • Calculate the number of moles in the 2.1-L volume of air in the lungs of the average person. Note that the air is at 37.0ºC (bod
    11·1 answer
  • WILL MARK BRAINLIEST! ANSWER QUICKLY!!!!
    13·2 answers
  • Which bones are shortened in brachycephalic dogs?
    5·2 answers
  • The poison dart from the jungle can kill its prey with a slim from its skin. this is an example of a
    6·1 answer
  • The ______ system produces and stores leukocytes and lymph.
    11·2 answers
  • As NH4Cl dissolves in water, and cools the solution,
    6·1 answer
  • Is it possible to have a bent molecule without a molecular dipole?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!