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Mg + HCl  MgCl2 + H2

Double replacement – two compounds switch parts with one another.

AgNO3 + K2SO4  Ag2SO4 + KNO3

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Answer 1

Answer:

Mg + 2 HCl = MgCl2 + H2

2 AgNO3 + K2SO4 = Ag2SO4 + 2 KNO3

Explanation:


Related Questions

What is the periodic table?

Answers

Answer:

 A Chart Of The Chemical Elements That Displays Them In Rows Horizontally In Order Of Increasing Atomic Number And Vertically According To Similarity Of The Chemical Properties Of Their Atoms.

Homeostasis in a constantly changing environment is a process known as

Answers

The Excretory system

What is the molarity of a solution that contains 114.4g NaCl (molar mass= 58.44 g/mol) in 1.2 L solution?

Answers

Answer:

1.6 M.

Explanation:

We want to find the molarity of a solution that contains 114.4 g NaCl in a 1.2 L solution.

Recall that molarity is given by:

[tex]\displaystyle \text{M} = \frac{\text{ mols solute}}{\text{ L soln.}}[/tex]

Convert 114.4 g NaCl to mol NaCl using its molecular weight:

[tex]\displaystyle 114.4 \text{ g NaCl} \cdot \frac{1 \text{ mol NaCl}}{58.44 \text{ g NaCl}} = 1.958\text{ mol NaCl}[/tex]

Therefore, the molarity of the solution will be:

[tex]\displaystyle \text{M} = \frac{1.958 \text{ mol NaCl}}{1.2\text{ L soln.}} = 1.6 \text{ M}[/tex]

In conclusion, the molarity of the solution is 1.6 M.

How many atoms of oxygen in the chemical formula 2Ca(ClO2)2?

Answers

Answer:

Calcium Nitrate is made up of three different elements and contains a total of nine atoms. This compound's formula is Ca(NO3)2. There is one calcium atom, two nitrogen atoms, and there are six oxygen atoms in calcium nitrate

when a candle burns both physical and chemical changes take place at identify these changes give another example of a familiar process in which both the chemical and physical changes takes place. ​

Answers

Answer:

So, the melting of wax and vapourisation of melted wax are physical changes. Chemical Changes : The wax near flame burns and gives new substances like carbon dioxide, carbon soot, water vapour, heat and light. LPG is another example of a familiar process in which both the chemical and physical changes take place.

what's is the most stable oxidation state for chromium and iron

Answers

Chromium exhibits a wide range of possible oxidation states, where the +3 state is the most stable energetically. The +3 and +6 states are the most commonly observed in chromium compounds, whereas the +1, +4 and +5 states are rare.

Who is the intended audience?​

Answers

Answer:

From Middle school to college

Usually who you want your paper to be read by. For example “students need to spend less time on their phones” that is directed towards students. So students are the intended audience.

is it possible to convert molecule to molecule?

Answers

Answer:

yes, it's possible to covert molecule to molecule

Explanation:

Converting between molecules and moles is done by either multiplying by or dividing by Avogadro's number.

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Calculate the molarity of each of the following solutions.
1.30 mol of KNO3 in 250.0 mL of solution
0.500 mol of BaCl2 in 100.0 mL of solution
0.195 mol of Na2CO3 in 200.0 mL of solution
7.00 mol of C6H12O6 in 250.0 mL of solution

Answers

Answer:

5.2M, 5M, 0.975M, 28M

Explanation:

M = ( moles × 1000 ) ÷ volume

Molarity is affected by temperature. Its unit is mole/litre. It measure the concentration of any solute in a solution. Thus the molarity of [tex]KNO_{3}[/tex],[tex]BaCl_{2}[/tex],[tex]Na_{2}CO_{3}[/tex] and[tex]C_{6}H_{12}O_{6}[/tex] are 5.2mol/litre, 5mol/litre, 0.97mol/litre, 28mol/litre respectively.

What is molarity?

Molarity can be calculated by dividing  number of moles of solute by volume of solution in liter.

Other concentration terms are molality, normality and mole fraction. Molarity can be used to find out the ionic strength of any solution

Mathematically,

Molarity= number of moles of solute/volume of solution in litre (1)

1) Molarity of [tex]KNO_{3}[/tex]= {1.30 mol ×(1000ml/l)}÷250.0 mL=5.2mol/litre

2)Molarity of [tex]BaCl_{2}[/tex]= {0.500 mol  ×(1000ml/l)}÷100.0 mL=5mol/litre

3)Molarity of[tex]Na_{2}CO_{3}[/tex]= {0.195 mol   ×(1000ml/l)}÷200.0 mL=0.97mol/litre

4)Molarity of [tex]C_{6}H_{12}O_{6}[/tex] = {7.00 mol  ×(1000ml/l)}÷ 250.0 mL=28mol/litre

Thus the molarity of [tex]KNO_{3}[/tex],[tex]BaCl_{2}[/tex],[tex]Na_{2}CO_{3}[/tex] and[tex]C_{6}H_{12}O_{6}[/tex] are 5.2mol/liter, 5mol/litre, 0.97mol/litre, 28mol/litre respectively.

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How are physical changes related to state of matter changes?

Answers

Answer:

Changes of state are physical changes. They occur when matter absorbs or loses energy. Processes in which matter changes between liquid and solid states are freezing and melting. Processes in which matter changes between liquid and gaseous states are vaporization, evaporation, and condensation.

hope this helped

What did Fermi mean when he said, "The reaction is self-sustaining"?

The reaction reached critical mass.
A spontaneous chain reaction had been accomplished.
The nuclear reaction was out of control.
The nuclear reaction could be controlled and maintained.

Answers

Answer:

The nuclear reaction could be controlled and maintained.

Explanation:

People had initiated a self-sustaining nuclear reaction--and then stopped it. He had released the energy of the atom's nucleus and controlled that energy.

Fermi's achievement in setting off the first self-sustaining nuclear chain reaction from his design of an atomic pile led to a new Age of the Atom. The controlled release of nuclear energy was now a reality

What is the mass grams that are in 1 molecule of H2?

Answers

One MOLE of hydrogen atoms contains the same number of atoms as the number of hydrogen molecules in one MOLE of hydrogen molecules, i.e., Avagadros number. However, one mole of hydrogen atoms has a mass of 1 gram while one MOLE of hydrogen molecules has a mass of 2 grams
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write insoluble or soluble solution for the following mixtores
1
2
3
4
5

Answers

Gasoline in water = insoluble

acetone in nail polished = soluble

salt in alcohol = soluble

oil in vinegar = insoluble

tawas in water = soluble...

Sorry if i am incorrect......

PLEASE HELP!!!!! i give a lot of points!!!!

Answers

Answer:

I think it s the third one

BTW yw if it's correct

Calculate the volume of an object with a density of .85 g/mL and a mass of 212 g.

Answers

Density=0.85g/mLMass=212g

[tex]\\ \sf\longmapsto Volume=\dfrac{Mass}{Density}[/tex]

[tex]\\ \sf\longmapsto Volume=\dfrac{212}{0.85}[/tex]

[tex]\\ \sf\longmapsto Volume=249.4mL[/tex]

Answer:

[tex]249.41 \: ml[/tex]

Explanation:

[tex]volume = \frac{mass}{density} \\ = \frac{212g}{0.85 \: g \: {ml}^{ - 1} } \\ = 249.41 \: ml[/tex]

Hope this helps you.

Let me know if you have any other questions :-):-)

One of the following species is not isoclectronic. A. PO4³-B. BrO4- C. H2SO4 D. XeF4 E. CCl4​

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Answer:

फ्य्फ्य्क्ज्य्य्क्सुग्किग्क्सिगिदित्फ

Need this answered immediately. 50 points.

Answers

Answer:

a

b

d

c

a

Explanation:

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Answer:

Hey if its up tomorrow I can I can’t rn sorry :(

Explanation:

HELPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP

Answers

Answer:

what the model is describing is the molecules. when molecules are tightly packed they form a solid like ice, and when the ice is melting forms a liquid because the molecules are spreading out. when the ice evaporates (gas) the molecules are moving about and are not touching eachother

I want the C answer plss help meee

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Answer:

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Due to the fact that electrons are delocalized in graphite, it is a good conductor of electricity. Carbon atoms in graphite form hexagonal layers and are in covalent bonds with three other carbon atoms. Due to this non-bond electron configuration, each carbon atom conducts electricity in the form of a delocalized electron.

3. A sample of gas has a volume of 364 mL at a temperature of 25 ᴼC. What will the volume be if the temperature is changed to 100 ᴼC while the pressure is kept constant?

Answers

Answer:

1027.9 mL, its easy

Explanation:

A cylinder was found in a storeroom of a manufacturing plant. The label on the cylinder was gone, and
no one remembered what the cylinder held. A 0.00500-gram sample was found to occupy 4.13 mL at 23°C
and 745 torr. The sample was also found to be composed of only carbon and hydrogen. Identify the gas

Answers

The gas that is to be identified in the problem is C2H2

From the ideal gas equation;

PV = nRT

P = pressure of the gas = 745 torr or 0.98 atm

V = volume of the gas =  4.13 mL or 0.00413 L

n = number of moles of the gas = ?

R = gas constant = 0.082 atm Lmol-1K-1

T = temperature of the gas = 23°C + 273 = 296 K

n = PV/RT

n = 0.98 atm ×  0.00413 L/0.082 atm Lmol-1K-1 × 296 K

n = 0.00405/24.272

n = 0.000167 moles

Recall that;

Number of moles = mass/molar mass

molar mass = mass/Number of moles

molar mass = 0.00500-gram/0.000167 moles

molar mass = 30 g/mol

Since it is a hydrocarbon;

[12 +1]n = 30

n = 30/13

n = 2

The gas is C2H2

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What happens to the molecules of Nitrogen as it goes through deposition?

Answers

Nitrogen is often a limiting nutrient in many ecosystems because
A) there is much less nitrogen in the atmosphere than carbon.
B) elemental nitrogen is very rapidly used by most organisms.
C) nitrogen availability is being reduced by pollution due to fertilizer use.
D) most organisms cannot use nitrogen in its elemental form.

18.Which shows chemical weathering?
A. Rocks are dissolved by acid.
B. Rocks are irregularly shaped.
C. Rocks are broken into pieces.
D. Rocks are changed into finer particles.

19. How long does it take for the moon to rotate on its axis?
A. 12 days
B. 20 days
C. 15 days
D. 28 days

20.Why is the moon important to human beings?
A. It help farmer know the right time to plant crops.
B. It makes planet earth beautiful.
C. It makes the earth climates bearable.
D. It makes earth a more livable planet and stay in its axis.

22.Which statement is NOT true?
A. Stars differ in size.
B. Red stars are the hottest star.
C. The sun is a medium sized yellow star.
D. Supernovas are exploding stars.

24.What is the effect of the northeast monsoon in the country?
A. Brings rainfall.
B. Cold weather and little rainfall.
C. No rainfall and cold weather.
D. Little rainfall and warm weather.

Answers

Explanation:

18 A

19 C

20 C

22 A

24 B

hope this helps you.

What is polyethylene?

A.Thermoplastic polymer

B.Electroplastic polymer

C.Thermoplastic monomer

D.Single monomer

Answers

A. Thermoplastic polymer

Explanation:

thermoplastic polymer

How many different types of elements make up one molecule of potassium perbromate, KBrO4?

Answers

Answer:

3.

Explanation:

potassium

bromine

oxygen

C.5A What is the symbol of the atom shown below?*
8 points
8 electrons
8 protons
8 neutrons
N
c

Answers

..........................

1) Is a moth bursting out of cocoon a chemical or physical change? (I put chemistry because i didn't know what else to put) 2) Is playing with purple and green slime chemical or physical change ​

Answers

Answer:

1)A moth bursting out of a cocoon is neither a chemical or physical change, it's a biological change.  If I had to chose it would be a physical change though.  Not to sure...

2)Playing with slime is a physical change.  

Explanation:

1)The reason why I would chose physical change is because the moth is changing it's physical state more than it's chemical composition, but you should say both if that's an option.  

2)A physical change is when the temperature, shape, or state of matter changes. A chemical change occurs when the actual substance changes.  An example of this is a chemical reaction.  Because the slime is changing shape and not substances, I would say that it's obviously a physical change.  

Hope this helps, sorry that I'm not too sure about the 1st question.  

what is the difference between cyclic compound and straight chain compound in hydrocarbons reaction​

Answers

Explanation:

Cyclic Hydrocarbons

A cyclic hydrocarbon is a hydrocarbon in which the carbon chain joins to itself in a ring. A cycloalkane is a cyclic hydrocarbon in which all of the carbon-carbon bonds are single bonds. Like other alkanes, cycloalkanes are saturated compounds. Cycloalkanes have the general formula CnH2nCnH2n. The simplest cycloalkane is cyclopropane, a three-carbon ring.

What state does a gas turn into if it reaches it freezing point?
O Solid
O Liquid
Gas
O None of the above

Answers

Answer:

Solid

Explanation:

According to Wikipedia

Deposition is the phase transition in which gas transforms into solid without passing through the liquid phase. Deposition is a thermodynamic process. The reverse of deposition is sublimation and hence sometimes deposition is called desublimation.

A chunk of sulfur has a volume of 8.33 cm3. What is the mass of this sulfur? (Density of sulfur = 2.07 g/cm3.)

Answers

Explanation:

equations to note:

density= mass/volume

mass= volume *density

volume= mass/density

you have a volume- 8.33cm3

you have a density- 2.07 g/cm3

Answer:

8.33cm3 * 2.07g/cm3=  17.24g

mass= 17.24g

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