Aqueous solutions of lithium sulfate and calcium nitrate are mixed, forming the precipitate
calcium sulfate.

Answers

Answer 1

Answer:

(aq) Li2SO4 + (aq) Ca(NO3)2 --> (s) CaSO4 + (aq) 2LiNO3

Explanation:

Aqueous Lithium Sulfate is Li2SO4

Aqueous Calcium Nitrate is Ca(NO3)2

When they're mixed, we get the double displacement solution Calcium Sulfate and Lithium Nitrate.

Precipitate is solid.

We got solid Calcium Sulfate so the other solution must be aqueous.

CaSO4 (s) --> Calcium Sulfate product

LiNO3 (aq) --> Lithium Nitrate product

We balance equation now. 2 Lithiums total and 2 Nitrates total. (Cuz there are 2 on the other side, 1 here)

Answer 2

LiSO₄ + CaNO₃ ⇒ CaSO₄ + LiNO₃ Therefore, when aqueous solutions of lithium sulfate and calcium nitrate are mixed, forming the precipitate calcium sulfate.

What is calcium sulfate ?

The inorganic chemical with the formula CaSO4 is calcium sulfate, along with its associated hydrates. It serves as a desiccant when it is in the form of -anhydrite. Another hydrate is found naturally as the mineral gypsum, while one is more commonly known as plaster of Paris. It is employed widely in industries.

A calcium salt that is both organic and inorganic is calcium sulfate. a calcium salt that is employed in construction, as a desiccant, and in dentistry as an impression material, among other things.

When dissolved substances react, one solid products are produced, which is known as a precipitation reaction. Many of these processes, which are sometimes referred to as double displacement, double replacement, and similar terms, involve the exchange of ions between ionic compounds in aqueous solutions.

Thus,  when aqueous solutions of lithium sulfate and calcium nitrate are mixed, precipitate of calcium sulfate formed.

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Related Questions

Select the correct answer. Which orbitals can overlap to form a pi bond? A. Two p orbitals B. One s orbital and one p orbital C. One s orbital and one hybrid orbital D. Two hybrid orbitals E. Two s orbitals.

Answers

Two p orbitals of atoms can overlap to form a pi bond in any molecule.

What are pi bond?

Pi bonds are come under the categories of multiple bond as in any molecule first molecule is the sigma bond, and the second bond is the pi bond.

Pi bonds are the result of the side or lateral overlapping of the un-hybrid orbitals. Orbitals which takes part in the formation of pi bonds are p-orbitals and in the pi bonds, electron density is present above or below the pi bond.

Hence, option (a) is correct, i.e. two p-orbitals overlap to form a pi bond.

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2.70g of Zn (s) reacts with 50.0 mL of 1.00 M HCl solution to produce hydrogen gas according to the reaction. (R = 0.08206 L·atm·K-1·mol-1) Zn(s) + 2HCl (aq) = ZnCl2 (aq) + H2(g) a) calculate mole of Zn used in this reaction b) calculate mole of HCl used in this reaction c) calculate which reactant is a limiting reactant d) calculate mole of hydrogen gas formed e) calculate volume of H2 gas at STP in Liters that will be produced during the reaction

Answers

Answer:

a. 0.0413 moles Zn

b. 0.0500 moles HCl

c. HCl is the limiting reactant

d. 0.0250 moles H₂

e. V = 0.56L

Explanation:

The reaction of Zn(s) with HCl is:

Zn(s) + 2HCl (aq) → ZnCl₂ (aq) + H₂(g)

Where 1 mole of Zn reacts with 2 moles of HCl.

a) To convert mass in grams to moles of a substance you need to use molar mass (Molar mass Zn: 65.38g/mol), thus:

2.70g Zn × (1mol / 65.38g) = 0.0413moles of Zn

b. Now, when you have a solution in molarity (Moles / L), you can know the moles of a volume of solution, thus:

Moles HCl:

50.0mL = 0.0500L × (1.00mol / L) = 0.0500 moles HCl

c. The limiting reactant is founded by using the chemical reaction as follows:

For a complete reaction of 0.0500 moles HCl you need:

0.0500 moles HCl × (1 mole Zn / 2 moles HCl) = 0.0250 moles Zn

As you have 0.0413 moles of Zn, and you need just 0.0250 moles for the complete reaction, Zn is the exces reactant and HCl is the limiting reactant

d.As HCl is limiting reactant and 2 moles of HCl react with 1 mole of H₂, moles of hydrogen formed are:

0.0500 moles HCl × (1 mole H₂ / 2 moles HCl) = 0.0250 moles H₂

e. Using PV = nRT, you can find volume of  gas, thus:

PV = nRT

V = nRT / P

Where P is pressure 1atm at STP, n are moles, R is gas consant 0.08206Latm/molK and T is absolute temperature 273.15K at STP.

V = 0.0250molesₓ0.082atmL/molKₓ273.15K / 1atm

V = 0.56L

ASAP. Magnetic field lines cannot be observed using a compass or iron filings.

True or false

Answers

Answer:

false

Explanation:

magnetic field lines can be accurately observed using *iron filling*

False iron fillings and compass can be used

Ana made a poster about the different kinds of volcanoes.

Under each picture, she listed the characteristics of each kind of volcano. Read each description and drag it to the correct kind of volcano.

Ana made a poster about the different kinds of volcanoes.Under each picture, she listed the characteristics

Answers

The description of each volcano is

loose and ashy: cinder cone volcanoalso called stratovolcano: composite volcanobuilds up over a broad area: shield volcanoerodes quickly: cinder cone volcanoslow, steady eruptions: shield volcanoalternating layers of hard lava and ash: composite volcano

What damages volcanoes?

Volcanoes erupt with a highly destructive mixture of ash, lava, hot, dangerous gases, and rock. Explosions from volcanoes have claimed lives.

Volcanic eruptions can bring about additional health risks like wildfires, floods, mudslides, power disruptions, and contaminated drinking water.

What places do volcanoes exist?

The tectonic plate borders are home to 60% of all active volcanoes. The majority of volcanoes are situated along the Pacific Ocean's "Ring of Fire," which is a band of volcanic activity.

Some volcanoes, such as those that make up the Hawaiian Islands, develop at locations known as "hot spots" inside of plates.

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On what is the geological time scale based?
A: changes in climate and historical records
B: geological and biological events
C: geological events
D: evolutionary events

Answers

I’m pretty sure its b or a

Answer: The answer is b for sure

Explanation: Because, I took the test

1. The total pressure of a gas mixture is 1.05 atm. The mixture contains 55% carbon dioxide, 31% nitrogen, and 14% hydrogen.
What is the partial pressure of the carbon dioxide in the mixture?

Answers

Answer:

0.15

Explanation:

The partial pressure of the carbon dioxide in the mixture is equal to 0.58 atm.

What is Dalton's law?

Dalton's law can be described as the total pressure of all gases exerted being equal to the sum of the partial pressures of every gas in the mixture of non-reacting gases.

The total pressure of  a gas mixture of gases can mathematically be defined as :

P (total) = P₁ + P₂ + P₃ + ......

Given, the total pressure of a gas mixture = Ptotal = 1.05 atm

The fraction of carbon dioxide in the mixture = 55 % = 0.55

The fraction of nitrogen in the mixture = 31 % = 0.31

The partial pressure of  carbon dioxide in the mixture can be calculated as:

P(CO₂) = 0.55× P(total)

P(CO₂) = 0.55× 1.05

P(CO₂) = 0.58 atm

Therefore, the partial pressure of the carbon dioxide in the mixture is equal to 0.58 atm.

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for a given amount of a gas at a certain temperature, does the pressure deviate from ideality more in a smaller or larger container? why? the pressure deviates more from ideality in a larger container because the attractive forces between molecules become a greater factor at the lower pressure and the molecular volume is a smaller part of the total volume of the larger container. the pressure deviates more from ideality in a smaller container because the attractive forces between molecules become less of a factor at the higher pressure and the molecular volume is a larger part of the total volume of the smaller container. the pressure deviates more from ideality in a smaller container because the attractive forces between molecules become a greater factor at the higher pressure and the molecular volume is a larger part of the total volume of the smaller container. the pressure deviates more from ideality in a smaller container because the attractive forces between molecules become a greater factor at the higher pressure and the molecular volume is a smaller part of the total volume of the smaller container. the pressure deviates more from ideality in a larger container because the attractive forces between molecules become less of a factor at the lower pressure and the molecular volume is a smaller part of the total volume of the larger container. the pressure deviates more from ideality in a larger container because the attractive forces between molecules become less of a factor at the lower pressure and the molecular volume is a larger part of the total volume of the larger container.

Answers

The pressure will deviates more ideality in case of smaller container as its attract more forces between molecules because of intermolecular and finite volume of gas particle .

Smaller container will have more devotion because on the basis of ideal gas law the gas particles don't posses any volume and there are no intermolecular forces between them. But , the gas particles do have a finite volume and there are intermolecular forces that can affect the behavior of the gas in closed system .

Hence, In a smaller container, the gas particles remains close with each other so their volume becomes a more significant fraction of the total volume of the container. On the other hand, in a larger container, the gas particles are more scattered and lies apart , so their volume becomes a smaller fraction of the total volume of the container.

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if a half life is 2.5 hours, how long is 2 half life's

Answers

Answer:

Im not really sure what a half life is, but two of them would be 5.0 hours

Answer:

5 hours

Explanation:

cause if half life is 2.5hours we just multiply it by two and get 5 hours

Explain what causes atoms to bond together to form molecules.

Answers

Atoms contains nucleus in its center and electron that revolve around the atom in fixed orbit. Stability is the reason that causes atoms  to bond together to form molecules.

What is atom?

Atom is the smallest particle of any element, molecule or compound. Atom can not be further divided. In the nucleus, proton and neutron are present.

Every atoms want to gain stability. To gain stability atoms have to gain noble gas configuration that is outermost shell must contain 2,8, 18 electrons. The atom should follow octet rule. Stability lowers the energy of an atom.

Therefore stability is the reason that causes atoms  to bond together to form molecules.

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How many moles of KNO3 are in 500.0 mL of 2.0 M KNO3?

Answers

There is 1.0 mole of KNO₃ in 500.0 mL of a 2.0 M KNO₃ solution.

To determine the number of moles of KNO₃ in 500.0 mL of a 2.0 M KNO₃ solution, we need to use the equation:

moles = concentration (M) × volume (L)

Since 1 liter is equal to 1000 milliliters, we divide 500.0 mL by 1000 to get 0.5 L.

Next, we substitute the values into the equation:

moles = 2.0 M × 0.5 L

The concentration of 2.0 M indicates that there are 2.0 moles of KNO₃ in 1 liter of the solution. Therefore, multiplying the concentration (2.0 M) by the volume (0.5 L) gives us the number of moles of KNO₃:

moles = 2.0 M × 0.5 L = 1.0 mol

Hence, there is 1.0 mole of KNO3 in 500.0 mL of a 2.0 M KNO₃ solution.

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The formation of protons over neutrons (thus producing about a 7:1 ratio) was favored in the early universe because:____.
a. it takes more energy to create a proton from a neutron than a neutron from a proton. b. it takes more energy to create a neutron from a proton than a proton from a neutron. c. the more massive neutrons made better targets for nucleon collisions. d. the positively charged protons were repelled away from the explosion.

Answers

Because it requires more energy to create a neutron from a proton than it does to create a proton from a neutron, protons were formed more frequently than neutrons in the early universe. The correct answer is option b.

To find the answer, we need to know more about the early universe.

How the formation of proton over neutrons was favored in the early universe?A neutron is produced with greater energy than a proton. However, later on, some of the protons were changed into neutrons. Contrary to some claims, the proton is a stable particle that never decays, but the neutron is unstable outside of the nucleus and decays with a half-life of around 10.5 minutes. However, very few would have had time to decay on the timeline you mention in your question. Every matter particle should have been accompanied by an antimatter particle, and every proton, neutron, and electron, by an anti-neutron and a positron, respectively. Where did all the antimatter go is the great mystery. There have been a few attempts to explain this, but they have failed.

Thus, we can conclude that, the correct answer is option b.

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a mineral sample from rock unit c has 50,000 atoms of
uranium-235 and 150000 atoms of lead 207

Answers

To calculate the ratio of uranium-235 to lead-207 atoms in the mineral sample, we can use the atomic masses and the concept of radioactive decay.

The ratio of uranium-235 to lead-207 atoms in the mineral sample is 1:3.The atomic mass of uranium-235 (U-235) is approximately 235 atomic mass units (amu), while the atomic mass of lead-207 (Pb-207) is approximately 207 amu.

Given:

Number of uranium-235 atoms = 50,000

Number of lead-207 atoms = 150,000

To find the ratio, we divide the number of uranium-235 atoms by the number of lead-207 atoms:

Ratio = Number of uranium-235 atoms / Number of lead-207 atoms

Ratio = 50,000 / 150,000

Simplifying the ratio:

Ratio = 1/3

Therefore, the ratio of uranium-235 to lead-207 atoms in the mineral sample is 1:3.

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Pa help po thanks! I need the answer ASAP

Pa help po thanks! I need the answer ASAP

Answers

Answer:

1.T

2.I

Explanation:

hope it help

#carry on learning

The object and description that matches is Object 2 and T.

Object 1 has no matching description.

Fish Aquarium Filter

A Fish aquarium filter is a filter whose function is to clean the water of debris, removes the toxic buildup of ammonia and nitrates, and aerates the water so that fish can in a conducive environment and breathe properly

Engine Oil Filter

An engine oil filter is a filter whose function is to filter and remove contaminants that may be present in the engine oil, transmission oil, lubricating oil, or hydraulic oil in order for proper functioning of the engine.

Therefore, the object and description that matches is Object 2 and T.

Object 1 has no matching description.

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How many electrons does each atom have? What group is each in?

Answers

In an atom, the electron's spin around the center, also called the nucleus. The electrons like to be in separate shells/orbitals. Shell number one can only hold 2 electrons, shell two can hold 8, and for the first eighteen elements shell, three can hold a maximum of eight electrons. ( This is the answer to both questions!)

Gravity is best described as the attractive force___

A. that acts between magnets and iron
B. that acts between any two objects
C. that does not exist in space
D. hat does not affect orbiting satellites.

Correct answer- 5 star

Answers

Gravity is nest described as the attractive force that acts between any two objects on earth

Explanation:-

Gravity was found by Sir Eizak NewtonIt has formula given by

\(\\ \rm\Rrightarrow F=G\dfrac{Mm}{r^2}\)

B.that acts between any two objects

The Downs cell is an industrial cell that is used to produce sodium metal and chlorine gas by the electrolysis of molten sodium chloride. Which half-reaction would you expect at the anode?

Answers

The anode of the Downs cell, you would expect the half-reaction of the oxidation of chloride ions (Cl-) to chlorine gas Cl2. This is because the anode is where oxidation reactions occur in electrolysis, and in the electrolysis of molten sodium chloride, the chloride ions are present in the electrolyte and are more easily oxidized than the sodium ions.

The chloride ions will lose electrons and form chlorine gas at the anode. happy to help with your question. In the Downs cell, an industrial cell used for electrolysis of molten sodium chloride, the half-reaction at the anode is the oxidation of chloride ions to produce chlorine gas. Here's the half-reaction:2Cl⁻l → Cl₂ g + 2e⁻At the anode, the chloride ions Cl⁻ lose electrons and form chlorine gas Cl₂, releasing two electrons in the process.

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PLEASE HELP ASAPPPPPPPPPPP!!!!!!!!!!!!!!1


Electric Energy Net Generation by Resource (as of 2007)


Resource Percentage

coal 48.5

natural gas 21.6

uranium 19.4

hydroelectric 5.8

petroleum 1.6

biomass about 1.0

geothermal <1.0

solar and other <1.0

wind <1.0

other gases 0.3


What percentage of energy generation is produced by fossil fuels?

Answers

Answer:

63%

Explanation:

About 63% of this electricity generation was from fossil fuels—coal, natural gas, petroleum, and other gases. About 20% was from nuclear energy, and about 18% was from renewable energy sources.

Hope this helped you!

Answer:

\(71.7\%.\)

\(Coal, \: crude \: oil, \: and \: natural \: \\ gas \: are \: all \: considered \: fossil \: fuels \\ coal \: 48.5 \\ natural \: gas \: 21.6 \\ petroleum \: 1.6

\)

\(the \: sum \: of \: the \: three \:: \\ (48.5+ 21.6+ 1.6) = 71.7.\)

Monique habal francès; es​

Answers

Answer:

pls make the question clear

Explanation:

HELPHELPHELPHELP


A compound is 67.3% magnesium nitrate and 32.7% water by mass. Find the
formula of the hydrate.

Answers

Answer:

Mg(NO₃)₂ · 4 H₂O

Explanation:

To find the formula of the hydrate, you need to (1) determine the mass of each compound, then (2) convert the mass of each compound to moles (via their molar masses), then (3) determine the lowest coefficient for each compound, and then (4) construct the formula.

(Step 1)

Because the percents add up to 100%, we can assume that the percent of each compound is equal to the mass (g) of each compound.

67.3% Mg(NO₃)₂ = 67.3 g Mg(NO)

32.7% H₂O = 32.7 g HO

(Step 2)

Molar Mass (Mg(NO₃)₂): 24.305 g/mol + 2(14.007 g/mol) + 6(15.998 g/mol)

Molar Mass (Mg(NO₃)₂): 148.307 g/mol

Molar Mass (H₂O): 2(1.008 g/mol) + 15.998 g/mol

Molar Mass (H₂O): 18.014 g/mol

67.3 g Mg(NO₃)₂            1 mole
--------------------------  x  ------------------  =  0.454 mole Mg(NO)
                                      148.307 g

32.7 g H₂O             1 mole
-------------------  x  -----------------  =  1.82 mole HO
                              18.014 g

(Step 3)

The moles of Mg(NO₃)₂ is the lowest among the two. To translate the technical amount of moles to the moles in the formula, you need to divide each value by the lowest mole value.

0.454 mole Mg(NO₃)₂ / 0.454 mole  =  1 mole Mg(NO)

1.82 mole H₂O / 0.454 mole  =  4 moles HO

(Step 4)

The amount of moles calculated in the last step represent the coefficient in front of the compounds. Using them, you can construct your hydrate.

Mg(NO)· 4 HO

Identify the reasons why oxygen has a lower first ionization energy than both nitrogen and fluorine.

Answers

Oxygen has a lower first ionization energy than both nitrogen and fluorine because of higher electron to electron repulsion as compared to nitrogen and fluorine.

Why is the ionization energy of oxygen lower than fluorine and nitrogen?

Fluorine is a more electronegative element as compared to oxygen. Due to the high electronegativity of the fluorine atom, the outermost electrons of the fluorine atom are more tightly held by the nucleus as compared to oxygen. So removing the outermost electron of the fluorine atom requires more energy than removing the outermost electron of the oxygen atom. In the nitrogen atoms, the three 2p electrons are present in different atomic orbitals. But in the case of an oxygen atom, two out of the four 2p electrons are present in the same atomic orbital which results in increased electron-to-electron repulsion in the oxygen. This is why oxygen has less ionization energy than a fluorine atom. Oxygen also has low ionization energy as compared to nitrogen. This is because an electron is added to half full orbital in an oxygen atom which results in electron-to-electron repulsion which will lower the ionization energy.

So we can conclude that due to electron to electron repulsion as compared to nitrogen and fluorine, oxygen has a lower first ionization energy than both nitrogen and fluorine.

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The study of earthquakes is part of which branch of science

Answers

Answer:

Seismology

Explanation:

Seismology is scientific discipline that is concerned with the study of earthquakes and of the propagation of seismic waves within the Earth. A branch of geophysics, it has provided much information about the composition and state of the planet's interior.

Hope this helps :)

Assess two situations in which it is important to question scientific issues in the media.

Answers

Answer:

Claims based on vague statements and statements from non-experts.

Explanation:

The nonmetals include which of the following groups? Use the periodic table to answer the question.
Check all that apply.
halogens
alkali metals
lanthanides
noble gases
alkaline earth metals

Answers

Answer:

halogen

Explanation:

Group VIIA/halogen/ is the only group in periodic table in which all the elements are nonmetals. This group contains F, Cl, Br, I, and At. Halogen meaning salt producer.

What bond type is expected between C & H given that their electronegativity difference is 0.4?

Answers

Answer:

Since they have an electronegativity difference of 0.4 then they will form a Covalent Bond.

HELPPPPPPPP i accidentally pressed on c

HELPPPPPPPP i accidentally pressed on c

Answers

Answer:

a

Explanation:

I'm not completely sure tho veary sorry if it's wrong

Answer:

the answer is C

Explanation:

as the yeast feeds on sugar and yields the ATP per glucose molecule and Carbon dioxide

please help me with answering this question :( asap!!

please help me with answering this question :( asap!!

Answers

Answer:

32. CnH2n+2

33. Ester

34. Water and corbondioxide.

35. dibromoethane

Can someone please help me fill this out?​

Can someone please help me fill this out?

Answers

The states of matter is solid,liquid and gas & you go from there.

Can someone help me please

Can someone help me please

Answers

Answer:

I believe the answer is C.

Answer:

C

Explanation:

green house gases effects increases global warming

porcelain x has much smaller crystals in it than porcelain Y. suggest a reason for that

Answers

Answer: 22

Explanation:

Potassium chloride dissolved in pure water is an
example of
A) an ionic compound dissolved in a polar solvent
B) an ionic compound dissolved in a nonpolar
solvent
C) a covalent compound dissolved in a polar solvent
D) a covalent compound dissolved in a nonpolar
solvent​

Answers

Answer:

A) An ionic compound dissolved in a polar solvent

Explanation:

Potassium Chloride's chemical formula is KCl. Most ionic compounds are formed between a nonmetal and a metal. In this case, potassium is acting as the metal and chloride is the nonmetal. Water is a polar solvent due to the electronegativity of the oxygen in the molecule creating a partial negative pole, leaving the hydrogen atoms partially positive. Hence, A is your best answer.

If I helped, a brainliest would be greatly appreciated!

Correct answer is A as said by the gentleman above me.
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