Calculate the mass of barium sulphate formed when 500 cm3 of 1 mol dm sodium sulphate solution is reacted completely with barium chloride solution.[ Relative atomic mass : O = 16; S = 32; Ba = 1371

Answers

Answer 1

Answer:

Answer:

116.69 g.

Explanation:

Let's write down the reaction taking place when barium chloride reacts with sodium sulfate. This is a double displacement reaction, meaning the anions will be exchanged to produce barium sulfate and sodium chloride:

$BaCl_2(aq)+Na_2SO_4(aq)\rightarrow BaSO_4(s)+2 NaCl(aq)$

Let's find the moles of sodium sulfate. Given the volume of:

$V_(Na_2SO_4)=500 cm^(3)$

Convert this to milliliters knowing that:

$1 mL = 1 cm^3$

Therefore:

$V_(Na_2SO_4)=500 cm^3\cdot (1 mL)/(1 cm^3) =500 mL\cdot(1 L)/(1000 mL) =0.500 L$

Also, we know that:

$1 dm^3 = 1 L$

Convert the molarity into mol/L:

$1 (mol)/(dm^3)\cdot (1 dm^3)/(1 L)=1 (mol)/(L)$

Multiply molarity by volume to find moles of sodium sulfate reacted:

$n_(Na_2SO_4)=1 (mol)/(L)\cdot0.500 L=0.500 mol$

According to stoichiometry of the equation, 1 mole of sodium sulfate produces 1 mole of sulfate, so 0.500 mol of sodium sulfate produce 0.500 mol of barium sulfate. That said, we have moles of barium sulfate produced. To find mass, let's multiply this amount of moles by the molar mass of barium sulfate:

$m_(BaSO_4)=0.500 mol\cdot233.38 (g)/(mol) =116.69 g$

Related Questions

Explain how oceans can affect the weather in an area.
MORE THAN ONE ANSWER!! HELP>>> Why do scientists use models?A. Models make some things easier to understand. B. Measurements can be made only on models. C. Models help scientists visualize things they can’t see. D. Models are perfectly accurate representations of objects. E. Scientists can analyze models to make predictions.
What is inetia and why is it importent
What are three ways that magma can form
How does paper chromatography work

What is a bond between a positive and a negative ion called?

Answers

Answer is: ionic bond.

Ionic bond is the electrostatic attraction between oppositely charged ions, cations (positive ions) and anions (negative ions).

For example compound magnesium chloride (MgCl₂) has ionic bond. Magnesium transfers two electrons, form positive cation Mg²⁺, to chlorine, form anion Cl⁻.

Another example, potassium bromide (KBr) is ionic solid, it has ionic bonds.

I think they are called ionic bonds.

Explain the relationship between societyand the technologies of using Earth's
resources.

Answers

Technology is built to give means, tools, and machinery for the preservation of the environment's resources from the damaging effects of climate change and global warming, and the environment in turn provides the materials, which is how technology and the environment are interdependent.

What is global warming ?

The gradual increase in the planet's surface temperature is known as global warming. Although this warming trend has been around for a while, the burning of fossil fuels has greatly accelerated its pace over the past century. The amount of fossil fuels burned has increased along with the size of the human population.

The two main ways that these technologies have harmed our planet are through pollution and the depletion of natural resources. When dangerous or excessive levels of gases like carbon dioxide, carbon monoxide, sulfur dioxide, nitric oxide, and methane are released into the earth's atmosphere, air pollution results.

Technology and society have a reciprocal interaction. Technological advancement shapes society, while technological advancement drives it.

Thus, the environment's resources from the damaging effects of climate change and global warming, and the environment in turn provides the materials.

To learn more about globalwarming, follow the link;

brainly.com/question/12908180

#SPJ2

Well for one, we used coal for electricity, water for steam engines when they were much in use, natural fossil feuls for our gasoline and oil, and we use earths oxygen/nitrogen gasses to breathe and sadly we are polluting it at a fast rate

1. Brandon is flying to the Western United States. His plane manages to cover 700 milesin 2 hours.
a. At what speed was Brandon flying?
b. What was his velocity?
2. Use the graph to answer the questions.

Answers

Answer:

a. Bradon was flying at the speed rate of 350 miles/hour.

b. His velocity is 350 miles/hour due west.

Explanation:

The speed of an object is the ratio of distance moved to the time taken, while velocity is the ratio of displacement to time taken. The major difference between speed and velocity is that speed is a scalar quantity, while velocity is a vector quantity.

Vector quantities are described by both magnitude and direction, while scalar have only magnitude.

From the question,

distance = 700 miles and time taken = 2 hours

a. speed = $(distance)/(time)$

= $(700)/(2)$

= 350 miles/hour

∴ Bradon was flying at the speed rate of 350 miles/hour.

b. velocity = $(displacement)/(time)$

displacement = 700 miles of west, time taken = 2 hours

velocity = $(700)/(2)$

= 350 miles/hour due west

His velocity is 350 miles/hour due west.

What must happen before a cell can divide?

Answers

the cell must go through mitosis and chromosomes in the nucleus must double

Mitosis.....................

A pressure of 655 mm hg is equal to how many atmospheres

Answers

Answer:

0.861842

Explanation:

One atm. equals 760.0 mm Hg, so there will be a multiplication or division based on the direction of the change. Example #1: Convert 0.875 atm to mmHg. Solution: multiply the atm value by 760.0 mmHg / atm.

Fossil fuels are running out. Solar and wind technologies are location specific and don't produce enough power to entirely replace fossil fuels. These are reasons to focus on which of the following? A)Nuclear Power B)Green Energy C)Coal and Natural Gas D)Increasing the oil supply

Answers

Fossil fuels are made from the decomposition of plants and animals. These fuels are present in the earth's crust and contain carbon and hydrogen which is usually burned to obtain energy. Nuclear Power comes now in the place of fossil fuels. The correct option is A.

What is nuclear power?

The use of nuclear reactions to generate the electricity is defined as the nuclear power. The nuclear fission, nuclear fusion and nuclear decay results in the formation of nuclear power. Now a days majority of the electricity from nuclear power plants is produced by the fission of uranium and plutonium.

The nuclear power plants heat water to produce steam. The steam is used to rotate large turbines which generate electricity. They use heat produced during nuclear fission to heat water. The nuclear power is the clean and efficient way of boiling water to form steam.

Thus the correct option is A.

To know more about Nuclear Power, visit;

brainly.com/question/18769119

#SPJ3

Answer:

Nuclear Power

Explanation:

Other Questions

Why burning methane does not produce acid rain

How can you increase the amount of work done when you lift a book explain

A man relaxes in his hot tub after a day at work. his body temp is 98.6F and the water is 102Fhow does the heat transfer? A. Heat does not transfer between his body and the waterB. Heat transfers to his body from the water by conduction C. Heat transfers from his body to the water by convection D. Heat transfers from his body to the water by conduction Thank you !

Which statement accurately describes non renewable energy sources ?A group of resources made of inorganic matter?A type of resource located only on the United States A resource that cannot be replenished in a short period of time A group of resources found both above and below the earths surface PLEASE ANSWER !!!