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
Klio2033 [76]
3 years ago
10

Can y'all help me with number 4

Chemistry
2 answers:
astraxan [27]3 years ago
6 0
I think the answer is A but i'm not sure
pogonyaev3 years ago
4 0
The answer is A 6o2, 6co2
You might be interested in
The molecule NH3 contains all single bonds.<br><br> true <br> false
dsp73
<h3><u>Answer;</u></h3>

True

<h3><u>Explanation</u>;</h3>
  • The molecule NH3 contains all single bonds.
  • NH3 has a three single covalent  bond among its nitrogen and hydrogen atoms,because one valence electron of each of three atom of hydrogen is shared with three electron.
  • There are three covalent bonds are in NH3 . Each hydrogen make a single bond with nitrogen and there is also a pair of electron which is unpaired from nitrogen.
8 0
3 years ago
Read 2 more answers
Please help ASAP I’ll make you u as brainlister please 100 points pelaseee
inessss [21]

Answer:

(C) im pretty sure is the answer

Explanation:

6 0
3 years ago
Read 2 more answers
In a reaction vessel, 17.6 g of solid chromium(III) oxide, Cr2O3, was allowed to react with excess carbon tetrachloride in the f
notsponge [240]

Answer:

72.53% is the yield of CrCl3

Explanation:

Given

Reaction:

Cr2O3(s) + 3 CCl4(l) → 2 CrCl3(s) + 3 COCl2(aq)

CCl4 is in excess and 17.6g  Cr2O3 present

The reaction yields 26.6g of CrCl3

To Find:

% yields of the reaction

Also given

Molar mass of CrCl3 = 158.35g/mol

Molar mass of Cr2O3 = 152.00 g/mol

By the stoichiometry of the reaction

1 mole of Cr2O3 gives  2 moles of CrCl3

0r

1 x1 52 g of Cr2O3 gives 2x 158.35 g of CrCl3

= 1 52 g of Cr2O3 gives 316.70 g of CrCl3

    17.6 g of Cr2O3 gives  (17.6÷152) × 316.70 g CrCl3

= 36.67 g CrCl3

but actual yield is only 26.6g

so % yield is (26.6 ÷÷ 36.67) × 100

= 72.53% is the yield of CrCl3

8 0
3 years ago
................................................................................................................................
viktelen [127]

Answer:

HmmmmmmmmmmI think the answer is 69

3 0
3 years ago
Read 2 more answers
Calculate the concentration of hi when the equilibrium constant is 1x10^5
exis [7]
Answer is: concentration of hydrogen iodide is 6 M.

Balanced chemical reaction: H₂(g) + I₂(g) ⇄ 2HI(g).
[H₂] = 0.04 M; equilibrium concentration of hydrogen.
[I₂] = 0.009 M; equilibrium concentration of iodine.
Keq = 1·10⁵.
Keq = [HI]² / [H₂]·[I₂].
[HI]² = [H₂]·[I₂]·Keq.
[HI]² = 0.04 M · 0.009 M · 1·10⁵.
[HI]² = 36 M².
[HI] = √36 M².
[HI] = 6 M.
5 0
3 years ago
Other questions:
  • The flamability (burns) is a physical change ?
    10·2 answers
  • When copper (ii) carbonate is heated if forms copper (ii) oxide and carbon dioxide?
    15·1 answer
  • predict where an unknown element that has these properties could fit in the periodic table 62 protons and electrons
    10·1 answer
  • A mystery element contains 11 electrons. Which group of the periodic table will it belong to?
    7·1 answer
  • A pure substance containing only one king of ______ .
    7·2 answers
  • Many elements combine with hydrogen(valence = 1) to give compounds called hydrides. Use the position of an element in the period
    9·1 answer
  • In which of the following is number of electrons the ion contains given correctly? A. H+ has 1 electron. B. Br- has 34 electrons
    12·2 answers
  • A cylinder of Krypton has contains 17 L of Ar at 22.8 atm and 112 degrees celsisus. How many moles are in the cylinder?​
    11·1 answer
  • In 1890 there were more gray-winged moths than white-winged moths due to?
    15·2 answers
  • Explain how the law conservation of mass is related to balancing equations
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!