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
lina2011 [118]
3 years ago
5

Zn2s + 4 AgNO3ag -> 2 Zn(NO3)2ag + 4 Ags

Chemistry
1 answer:
emmasim [6.3K]3 years ago
6 0

Answer:

- 0.927 moles of AgNO₃

- 87.7 g of Zn(NO₃)₂

- 13.6 g of Zn

Explanation:

The reaction is:

2Zn(s) + 4AgNO₃ (aq) →  2Zn(NO₃)₂(aq) + 4 Ag(s)

First of all we need to determine the moles of silver that were produced

100 g / 107.87 g/mol = 0.927 moles of Ag

As the limiting reactant is the nitrate, we determine that ratio is 4:4

If I made 4 moles of silver, I used 4 moles of nitrate. In conclusion, 0.927 moles of Ag were made by 0.927 moles of nitrate

If we still assume, that the Zn is in excess we use the 0.927 moles of silver nitrate. Ratio is 4:2 so the rule of three will be:

4 moles of silver nitrate can produce 2 moles of zinc nitrate

0.927 moles of silver nitrate will produce (0.927 . 2) / 4= 0.463 moles of zinc nitrate. We convert the moles to mass → 0.463 mol . 189.41 g /1mol = 87.7 g

We need to determine the moles of silver that are produced

45 g / 107.87 g/mol = 0.417 moles

As the zn is in excess, we used the silver nitrate as the limiting reagent. Ratio was 4:4, so 0.417 moles were produced by 0.417 moles of AgNO₃

By stoichiometry, 4 moles of silver nitrate react with 2 moles of solid zinc. The rule of three will be: 4 moles of silver nitrate react with 2 moles of Zn

Then, 0.417 moles of AgNO₃ will react with (0.417 . 2) /4 = 0.208 moles of Zn

We convert the moles to mass → 0.208 mol . 65.41 g/ 1mol = 13.6 g

You might be interested in
Molecular iodine, I2(g), dissociates into iodine atoms at 625 K with a first-order rate constant of 0.271 s−1 .
katrin [286]
The correct is this because they said
4 0
2 years ago
- How many moles of S2 are needed to produce 1.50 moles of SO2 gas? S2 + 20, ----> 2802​
matrenka [14]

Answer:

0.75 moles

Explanation:

S2 + 2O2 = 2SO2

From the reaction above,

We see that number of moles attached to S2 is 1 and number of moles attached to SO2 is 2.

Since we want to find how many moles of S2 are needed to produce 1.50 moles of SO2 gas

The answer is gotten by proportion;

Number of moles = 1/2 × 1.5 = 0.75 moles

3 0
3 years ago
Which elements are more likely to lose electrons?<br> Ca, Li, F and Ne
Slav-nsk [51]
Ca, they only have two valence electrons, in order to become more stable, they would like to lose all of them
3 0
3 years ago
Which substance can be broken down by chemical means?
zepelin [54]
Methanol is the substance that can be broken down by chemical means, the remaining ones are elements.
4 0
3 years ago
Read 2 more answers
Some water released 7800 J of energy when cooled from 78°C to 33°C. What was the mass of the water?
Karo-lina-s [1.5K]

Answer:

-41. 47

Explanation:

m = q / Cp x T

m = Mass

q = Energy (or joules)

Cp = Heat Capacity

T = Change in Temperature

Water's heat capacity is always 4.18.

This is the formula you'll need for change in temperature:

Final - Initial

So, 33 - 78 = -45

m = 7800 / 4.18 x -45

= -41.47

4 0
2 years ago
Other questions:
  • If helium effuses through a porous barrier in 1.34 min, how much time (in min) would it take the same amount of ammonia to effus
    6·1 answer
  • What is a dependent variable?
    14·2 answers
  • In an energy pyramid, which level has the most available energy?
    10·1 answer
  • Which is better raw or synthetic materials , and why.
    15·1 answer
  • How many protons, electrons, and neutrons does the following Isotope contain?<br> 27Al 3+
    5·1 answer
  • What volume of 1.25 M sodium hydroxide (NaOH) solution can be prepared using 60.0 g of sodium hydroxide? (The mass of one mole o
    10·1 answer
  • Examine the data below and answer the following question: H+CIO HCI ? 2 points
    8·1 answer
  • A sample of nitrogen gas is in a 65.0-L automobile air bag and has a pressure of 745 mm Hg. What is the pressure of this sample
    8·1 answer
  • Identify the compound with the lowest dipole moment. Identify the compound with the lowest dipole moment. CH3CH2CH3 CH3OCH3 CH3C
    12·1 answer
  • How many moles of hydrogen are produced from the reaction of 50.0 g of Mg and the equivalent of 75 g of HCl?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!