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
Butoxors [25]
3 years ago
5

Jodi reacts 6.087 grams of cobalt (mw=58.933) with a solution containing excess gold (iii) chloride and recovers 13.572 g of sol

id gold (mw=196.967). Which reaction, 1 or 2, most likely occurred in their experiment?
Chemistry
1 answer:
Makovka662 [10]3 years ago
8 0

The correct answer is reaction 2 most likely occurred in their experiment.

So the given two reactions are as follows:

1) Au³⁺(aq) + Co(s) --> Au(s) + Co³⁺(aq)

2) 2Au³⁺(aq) + 3Co(s) --> 2Au(s) + 3Co³⁺(aq)

Mass of Co = 6.087 g

Molar mass of Co = 58.933 g/mol

Moles of Co =\frac{6.087 g}{58.933 g/mol} = 0.1032

Mass of Au = 13.572 g

Molar mass of Au = 196.967 g/mol

Moles of Au = \frac{13.572 g}{196.967 g/mol} = 0.069

Now based on reaction 1) the molar ratio between Co and Au is 1:1

So as per this reaction 0.1032 moles of Co would produce 0.1032 mole of Au

Again based on reaction 2) the molar ratio between Co and Au is 3:2

So as per this reaction 0.1032 moles of Co would produce \frac{2 x 0.1032}{3} mole of Au

or, As per the second reaction 0.1032 moles of Co would produce 0.0688 moles of Au

You might be interested in
Write the correct name for each compound. a. N2O5 b. Si2F4 c. S3F d. OF2 e. H4P6 f. C2O4 g. HF3
PSYCHO15rus [73]

Answer:

a. Boron trifluoride

b. Propane

c. Dinitrogen pentoxide

d. Carbon Dioxide

e. Silicon Octafluroride?

Explanation:

Glad to help :)

3 0
3 years ago
What does the term solar power mean?
Elenna [48]

Explanation:

Power obtained by harnessing the energy of the suns rays

5 0
3 years ago
A compounds empirical formula is H.O. If the formula mass is 34 amu what is the molecular formula?
BigorU [14]

Answer:

C

Explanation:

1. The molecule has to have a ratio of 1 hydrogen to 1 oxygen.

2. Hydrogen = 1amu, Oxygen = 16amu. (2*2)+(16*2) = 34amu

7 0
2 years ago
HELP!! URGENT ASAP!! WILL GIVE BRAINLIEST TO FASTEST ANSWER!!
Shalnov [3]

Answer:

This shoes the soda lime defusing to limewater turning into germinating seeding which defuses back to limewater

Explanation:

5 0
3 years ago
0.28gram of NH3 on decomposition gave 0.25gram of nitrogen and hydrogen. Find the volume of hydrogen evolved at Ntp. (2gram hydr
hodyreva [135]

The volume of H₂ evolved at NTP=0.336 L

<h3>Further explanation</h3>

Reaction

Decomposition of NH₃

2NH₃ ⇒ N₂ + 3H₂

conservation mass : mass reactants=mass product

0.28 NH₃= 0.25 N₂ + 0.03 H₂

2 g H₂ = 22.4 L

so for 0.03 g :

\tt \dfrac{0.03}{2}\times 22.4=0.336

7 0
3 years ago
Other questions:
  • Is camphor heated a physical/chemical change​
    12·1 answer
  • A 4 gram metal object displaces 2 mL of water in a graduated cylinder. What is the density of the metal object?
    13·1 answer
  • Calculate the value of D at 575°C for the diffusion of some species in a metal for which the values of D0 and Qd are 4.5 × 10-5
    14·1 answer
  • This age group walks and runs confidently, but may run into things, walks up and down stairs without assistance, scribbles in de
    5·1 answer
  • If the solubility of a gas in water is 5.0 g/L when the pressure of the gas above the water is 2.5 atm, what is the pressure of
    5·1 answer
  • At the end of 2012, global population was about 7.0 billion people. What mass of glucose in kg would be needed to provide 1200 c
    8·1 answer
  • Smart people<br><br> Is water wet?<br><br> I need to know
    5·2 answers
  • Convert 113 Fahrenheit to celcius do full process​
    9·1 answer
  • Which formula can be used to calculate the percent yield?
    7·2 answers
  • Math is hard don’t report me I have a question
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!