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
sdas [7]
3 years ago
13

A 1.897g sample of Mg(HCO3)2 was heated and decomposed. When the sample

Chemistry
1 answer:
svlad2 [7]3 years ago
8 0

1.5 % is the percent yield in the reaction.

Explanation:

Given that:

original mass of the sample used in reaction = 1.897 grams

product formed after decomposition = 1.071 grams

The reaction for the decomposition:

Mg(HCO3)2 (s) ⇒ CO2 (g) + H2O (g) + MgCO2 (s)

It says that 1 mole of Mg(HCO3)2  yielded 1 mole of  MgCO2  on decomposition

68.31 grams/mole or 68.31 grams of MgCO2 is formed

percent yield = \frac{actual yield}{theoretical yield} x 100

putting the values in the equation:

percent yield = \frac{1.071}{68.31}

                       = 0.015 x100

   PERCENT YIELD = 1.5 %

You might be interested in
The electron configuration of an element is shown below.
g100num [7]

Answer:

helium family or neon family

Explanation:

you can use p

5 0
3 years ago
Why are cells the building blocks of an organism.​
ladessa [460]

Answer:A cell is the smallest unit of life, also called the 'building blocks of life' because cells multiply and differentiate to form a multicellular organism as well as give rise to new organism by forming gametes or reproductive spores.

Explanation:

8 0
3 years ago
A voltaic cell has a zinc anode and a copper cathode. They are connected by a wire but no salt bridge. What can you predict will
Allisa [31]

The prediction is that B. The electrons will flow to the zinc anode where a negative charge will build up and eventually halt the reaction.

<h3>What is zinc?</h3>

This is known as a chemical element, of the periodic table, that is essential to life and is one of the most widely used metals. Zinc is of considerable commercial importance.

Without the salt bridge, positive and negative charges will build up around the electrodes causing the reaction to stop.

Hence, we know that the purpose of the salt bridge is to keep the solutions electrically neutral and allow the free flow of ions from one cell to another.

Read more about<em> zinc</em> here:

brainly.com/question/25764334

#SPJ1

4 0
2 years ago
20 poll
aleksley [76]

Answer: n=15.56moles

Explanation:

PV = nRT

where  

P is pressure in atmospheres

V is volume in Liters

n is the number of moles of the gas

R is the ideal gas constant = given as (0.0821L -atm/k-mol

PV = nRT

n= PV/RT

n= (1.5 X 230)/ (0.0821  X 270)

n= 15.56 moles

5 0
3 years ago
Explain, in terms of electron configuration why atoms of the radioisotope produced by the sixth decay in the U-238 disintegratio
Troyanec [42]

Answer:

The reason they don't react is because Elements with full octets are stable, the Elements with no unpaired electrons do not react at all in the decay.

4 0
2 years ago
Other questions:
  • At 65°c, the ion-product constant of water, kw, is 1.20 ´ 10-13. the ph of pure water at 65°c is:
    8·2 answers
  • A mixture of gaseous reactants is put into a cylinder, where a chemical reaction turns them into gaseous products. The cylinder
    14·1 answer
  • Calculate the number of moles of C2H6 in 6.29×1023 molecules of C2H6.
    14·1 answer
  • Which process in the light-dependent reactions results in the release of hydrogen ions, electrons, and oxygen?
    13·2 answers
  • 3. Match each of the following descriptions with one of the beakers in Model 1. In each case, assume the change in volume as the
    11·1 answer
  • What is past form of be<br>​
    10·2 answers
  • Calcular las fracciones molares de los componentes de una disolución formada por: 250 g de agua, 50 g de ácido acético y 25 g de
    6·1 answer
  • At which point does the water in the waterfall have the greatest gravitational potential energy?
    11·2 answers
  • Explain with equations and calculations, when necessary, whether an aqueous solution of each of these salts is acidic, basic, or
    12·1 answer
  • What is the correct formula of a compound that has ten oxygen atoms and four phosporus atoms?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!