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
Andreas93 [3]
3 years ago
12

A student carries out the precipitation reaction shown below, starting with 0.030 moles of calcium nitrate. The final mass of th

e precipitate is 2.9 g. Answer the questions below to determine the percent yield. 3Ca(NO3)2(aq) + 2Na3PO4(aq) → Ca3(PO4)2(s) + 6NaNO3(aq) 1. a. Which product is the precipitate? b. How many moles of the precipitate would one expect to be produced from 0.030 moles of calcium nitrate? c. How many grams of solid do you expect to be produced? d. What is the percent yield?
Chemistry
1 answer:
valkas [14]3 years ago
7 0

Answer:

a. Ca₃(PO₄)₂.

b. 0.010 moles of Ca₃(PO₄)₂ can we expect to be produced

c. 3.1g of Ca₃(PO₄)₂

d. Percent yield = 93.5%

Explanation:

a. Based on the reaction:

3Ca(NO₃)₂(aq) + 2Na₃PO₄(aq) → Ca₃(PO₄)₂(s) + 6NaNO₃(aq)

<em>3 moles of calcium nitrate reacts with 2 moles of sodium phosphate producieng 1 mole of calcium phosphate.</em>

<em />

As you can see, Ca₃(PO₄)₂ is a solid product -(s)-, that means when the reaction occurs the precipitate produced is the solid,

<h3>Ca₃(PO₄)₂</h3><h3 />

b. As 3 moles of calcium nitrate produce 1 mole of calcium phosphate and there are 0.030 moles of calcium nitrate

0.030 moles Ca(NO₃)₂ × (1 mol Ca₃(PO₄)₂ / 3 moles Ca(NO₃)₂) =

<h3>0.010 moles of Ca₃(PO₄)₂ can we expect to be produced</h3><h3 />

c. As molar mass of Ca₃(PO₄)₂ is 310.18g/mol, the mass of 0.010 moles (The expected mass) is;

0.010 moles Ca₃(PO₄)₂ × (310.18g / mol) =

<h3>3.1g of Ca₃(PO₄)₂</h3><h3 />

d. The percent yield is defined as 100 times the ratio between the obtained yield (That is 2.9g of precipitate, Ca₃(PO₄)₂) and the expected yield, 3.1g of Ca₃(PO₄)₂:

\frac{2.9g}{3.1g} *100

<h3>Percent yield = 93.5%</h3>
You might be interested in
What is this equation balanced?
grin007 [14]
<h3>the balanced chemical reaction would be :</h3>

CH4 + 2O2 =》CO2 + 2H2O

Answer:

the balanced chemical reaction is provided above .

Explanation:

the given reaction is reaction of methane with oxygen ( or burning of methane in presence of oxygen )

it is highly exothermic, because high amount of heat is evolved in this reaction

5 0
2 years ago
Read the summary below. Choose the answer that BEST fits into the blank to complete the summary.
777dan777 [17]

Answer:

An atom has a nucleus, made up protons and neutrons, which is surrounded by a cloud of electrons.

Explanation:

An atom is the smallest indivisible part of any element that takes place in a chemical reactions.

These are the fundamental building blocks of every element and even compounds.

  • There are three known subatomic particles found within an atom.
  • Electrons are the negatively charged particles in an atom
  • Protons are the positively charged particles of an atom
  • Neutrons do not carry any charges.

Both protons and neutrons are located within the tiny space called nucleus at the center of an atom.

Electrons moves round in orbitals at the spaces outside of the nucleus.

4 0
2 years ago
In negative adsorption the concentration of the solution is​
trapecia [35]

Answer:

This is called negative adsorption. Hence if the concentration of the adsorbate is less on the surface of the adsorbent than in the bulk, it is known as negative adsorption.

Explanation:

Hope this helps

7 0
2 years ago
______ reactions generate thermal energy in a nuclear power plant as water is changed into steam
Jet001 [13]
Fission reactions generate thermal energy
8 0
3 years ago
Read 2 more answers
Complete the charge balance equation for an aqueous solution of h2co3 that ionizes to hco−3 and co2−3.
Zielflug [23.3K]

The charge balance equation for an aqueous solution of H₂CO₃ that ionizes to HCO₃⁻ and CO₃⁻² is [HCO₃⁻] =  2[CO₃⁻²] + [H⁺] + [OH⁻]

<h3>What is Balanced Chemical Equation ?</h3>

The balanced chemical equation is the equation in which the number of atoms on the reactant side is equal to the number of atoms on the product side in an equation.

The equation for aqueous solution of H₂CO₃ is

H₂CO₃ → H₂O + CO₂

The charge balance equation is

[HCO₃⁻] =  2[CO₃⁻²] + [H⁺] + [OH⁻]

Thus from the above conclusion we can say that The charge balance equation for an aqueous solution of H₂CO₃ that ionizes to HCO₃⁻ and CO₃⁻² is [HCO₃⁻] =  2[CO₃⁻²] + [H⁺] + [OH⁻]

Learn more about the Balanced Chemical equation here: brainly.com/question/26694427
#SPJ4

8 0
2 years ago
Other questions:
  • Which five statements about hemoglobin and myoglobin structure are true? Each iron atom can form six coordination bonds. One of
    8·2 answers
  • Cellular respiration involves a reaction between glucose and oxygen to form
    10·2 answers
  • What gives framework to a cell and helps it move
    8·2 answers
  • Why is the right side
    9·1 answer
  • What is revealed in the reaction ca2+(aq) + 2oh-(aq) ca(oh)2(s), deltah + 16.71?
    15·2 answers
  • Will the pH of your stomach increase after sucking antacid tablets?
    10·1 answer
  • Which statement best describes a waxing gibbous moon?
    9·1 answer
  • Most terrestrial plants are members of this Division:
    10·2 answers
  • explain why the sun appers to be the brightest star in the sky. relate your explanation with an example such as street lights. t
    12·1 answer
  • 1.How far can you travel if you drive 4 hours and can average 120 Km/hr?
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!