zinc metal reacts with hydrochloric acid to produce hydrogen gas.
what best describes this reaction?
a. A single replacement reaction takes place because zinc is more reactive and hydrogen
b. A single replacement reaction takes place because zinc is more reactive than chlorine
c. A double replacement reaction takes place because zinc is less reactive than hydrogen
d. A double replacement reaction takes place because zinc is less reactive than chlorine

Answers

Answer 1

a. A single replacement reaction takes place because zinc is more reactive and hydrogen

Further explanation

In voltaic series  

Li-K-Ba-Ca-Na-Mg-Al-Mn- (H2O) -Zn-Cr-Fe-Cd-Co-Ni-Sn-Pb- (H) -Cu-Hg-Ag-Pt-Au  

The more to the left, the metal is more reactive (easily release electrons) and the stronger reducing agent  

The more to the right, the metal is less reactive (harder to release electrons) and the stronger oxidizing agent

So that the element located on the left can push the element on the right in the redox reaction

Reaction

Zn+2HCl ⇒ ZnCl₂ + H₂

If we look at this reaction, the elements that play a role are those that undergo a redox reaction

Oxidation : Zn⇒Zn²⁺ + 2e

Reduction : 2H⁺ + 2e ⇒H₂

So Zn (located on the left) can push H (the element on the right) in the redox reaction ⇒ Zn more reactive

A single replacement reaction is a chemical reaction in which one element replaces the other elements of a compound to produce new elements and compounds

A+BC⇒AC+B

So the above reaction involves the elements Zn and H which undergo a redox reaction and are included in a single replacement

Answer 2

Answer:

A

Explanation:


Related Questions

Identify the techniques used to separate the components of the given mixtures.

1. Faucet with cloth
2. Nails attracted by magnets
3. Pouring off liquid from rice
4. Sorting buttons with different colors
5. Use of sieve to produce finer sand​

Answers

Answer: 1.valving  , 2. picking, 3. decantation , 4. sorting, 5. seiveing

Thank me later!

What components does the solar system appear to have formed from?

Answers

Answer:

I would say a dense cloud of interstellar gas and dust.

Describe the difference between balanced forces and unbalanced forces.

Answers

Answer:

If two individual forces are of equal magnitude and opposite direction, then the forces are said to be balanced. An object is said to be acted upon by an unbalanced force only when there is an individual force that is not being balanced by a force of equal magnitude and in the opposite direction.


With circulation, the heart provides your body with:
a. oxygen
b. nutrients
C. a way to get rid of waste
d. all of the above

Answers

Answer:  D) all of the above

Explanation:

The lungs pump oxygen in and carbon dioxide out, which goes through the blood stream to help with the cell's energy needs.

Nutrients pass through the blood stream as well. The nutrients start with the digestive system (mouth, esophagus, stomach, small intestine) before going into the blood stream. The nutrients are building blocks to help make new cells when old ones die off.

When those cells die off, the body sheds them like dead skin, but internal dead cells are passed off as waste. This waste and other byproducts the body doesn't need passes through the blood stream as well.

In short, the blood stream is basically the highway to help get desired materials (eg: oxygen and nutrients) and get rid of waste (eg: carbon dioxide and other unwanted byproducts or dead cell material)

So that's why the answer includes A, B and C.

Which of the following atoms has the greatest ionization energy?

a.)W
b.)C
C.)d
P.)d

Answers

Answer:

helium

Explanation:

because there are no electrons screening it from the nucleus

Which of the following statements is true about atoms?

Answers

Answer:

D

Explanation:

How many grams of sulfuric acid contain 32 g of
oxygen atoms?

Answers

Answer:

One mole of oxygen gas, which has the formula O2, has a mass of 32 g and contains 6.02 X 1023 molecules of oxygen but 12.04 X 1023 (2 X 6.02 X 1023) atoms because each molecule of oxygen contains two oxygen atoms.

Explanation:

HELP ME OUT PLEASE!! I NEED HELP !
This diagram represents one of the four levels of industry. Which term best
completes the diagram?
Factory employees
Oil refinery workers
Butchers
A. Quaternary sector
OB. Secondary sector
C. Tertiary sector
D. Primary sector

Answers

It’s b secondary sector

Answer: OB. Secondary Sectors.

Explanation: Make sure to study as the text provided, and study guide state manufacturers, butchers, and factory employees are apart of the secondary sector in the world economy. You’ll do great on Quiz 3.2.5! Make sure to study, have a g’day. Please don’t listen to people who say this answer is falsen as many other questions do, don’t be the one to spread false information as this people’s academics, here’s a picture as well ❤︎. Again, its B!

Conservation of Mass in Chemical Reactions: 7th grade Science


Question: In a chemical reaction, the total mass of the reactants is 10.0 grams. After the reaction, the total mass of the products must be

A. More than 10.0 grams
B. Exactly 20.0 grams
C. Exactly 10.0 grams
D. Less than 10.0 grams

Answers

Answer:

After the reaction, the total mass of the products must be D. Less than 10.0 grams

A runner completes a 400m race in 43.9s. What is his average speed?

Answers

Answer:

average speed around 9.1 meters/second

Explanation:

400 divided by 43.9

The gravitational attraction between two objects is determined by the mass of the two objects and the:
A. Distance between the objects
B. Weight of the objects
C. Diameter of the objects
D. Density of the objects

Answers

Answer:

A. Distance between the objects

Explanation:

The gravitational attraction between two objects is determined by the mass of the two objects and the distance between the two objects.

According to Newton's law of universal gravitation:

 "the gravitational force of attraction between two bodies is directly proportional to the product of the their masses and inversely proportional to the square of the distance between them".

          F = [tex]\frac{Gm_{1}m_{2} }{r^{2} }[/tex]

 F is the gravitational attraction

G is the universal gravitation constant

m is the mass

r is the distance

  We can see that the gravitational attraction depends on the mass of the bodies and the distance between them.

Help me please

Chemical energy is a form of_______ energy

A. heat
B. kinetic
C. potential
D. electromagnetic​

Answers

Answer:

potential

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

Answer:

Chemical energy is a form of potential energy.

Temperature is a measure of the average _____energy of particles in a substance.

Answers

Answer:

kinetic energy

Explanation:

Answer:

kinetic energy

Explanation:

In physics, the kinetic energy of an object is the energy that it possesses due to its motion. It is defined as the work needed to accelerate a body of a given mass from rest to its stated velocity. Having gained this energy during its acceleration, the body maintains this kinetic energy unless its speed changes.

The characteristic bright–line spectrum of potassium is produced when electrons
A) jump to higher energy levels
B) return to lower energy levels
C) are lost by neutral potassium atoms
D) are gained by neutral potassium atoms
E) are released from the nucleus

Answers

Answer: B.

Explanation:

When the electron changes levels, it decreases energy and the atom emits photons. The photon is emitted with the electron moving from a higher energy level to a lower energy level. The energy of the photon is the exact energy that is lost by the electron moving to its lower energy level.

Hope this helps!

Today scientists know that organisms are much less diverse than Darwin imagined.

True or false?

Answers

Answer:

FALSE

Explanation:

they were much more diverse

The other person is right it is false

? divided by 230 equals 273.1

PLZ HELP I NEED IT

Answers

Answer:

Explanation:

X / Y = 230

The answer is infinite. However, below we have created a list of what divided by what equals 230.

230 / 1 = 230

460 / 2 = 230

690 / 3 = 230

920 / 4 = 230

1150 / 5 = 230

1380 / 6 = 230

1610 / 7 = 230

1840 / 8 = 230

2070 / 9 = 230

2300 / 10 = 230

is it true that the atomic radius of A1 is greater than the atomic radius of In ?

Answers

Answer:

Yes

Explanation:

Yes it is true

A rock occupies a volume of 20 cm3 and has a mass of 54 grams. Find the density of this rock

Answers

Answer:

2.7 gm/cm cubed

Explanation:

To get the answer, you should divide the mass by the volume or 54 divided by 20 = 2.7

Calculate the volume of this irregular solid to the nearest cubic centimeter.

What is the volume of the key?

Answers

Answer:

The answer is 8cm

Explanation:

:)

Answer:

8 cm

Explanation:

Which of the following happens to the particles when the temperature of liquid water drops?

Answers

Explanation:

when water is in liquid form and the temperature DROPS it becomes solid ice the process is melting , freezing and evaporation this goes in a circle


what is a likely oxidation
state of Chlorine?
a)-1
b) 7
C) -7
d) +1

Answers

Answer: a) -1

Explanation:

Why can two water molecules stick to each other?

Answers

I think Both of these atoms can form a hydrogen bond with oxygen atoms of different water molecules. If I’m wrong sorry . Have a nice day :)

What is the mass of 18.5 moles of iron?

Answers

Answer:

1 mole =56 g

18.5 moles =56×18.5

=1036 moles

Hope this helps you Stay happy and safe Do mark as brainliest ✌️

What is the volume of a weather balloon that has 39 grams of helium with a density 0.017 g/mL?

Answers

Answer:

The answer is 235.29 mL

Explanation:

The volume of a substance when given the density and mass can be found by using the formula

[tex]volume = \frac{mass}{density} \\ [/tex]

From the question.

density = 0.017 g/mL

mass = 4 g

We have

[tex]volume = \frac{4}{0.017} \\ = 235.2941176...[/tex]

We have the final answer as

235.29 mL

Hope this helps you

HELP ME PLEASE
THANK YOU

Answers

Answer:

i think its letter D

Explanation:

Answer:

I think it is B if it is not then I am sorry.

Explanation:

⚠️NEED HELP ASAP⚠️What is the oxidation number of nitrogen in (NO3)2
A) +3
B) +1
C+5
D) -5

Answers

Explanation:

its +5 trust me on this hope this helps kiddo

Calculate the density in grams per cubic centimeter of a material that has a mass of
720 milligrams and a volume of 10.0 cubic centimeters. =

Answers

Answer:

1.72 g/cm ^3

Explanation:

I WILL MARK BRAINLIST TO WHOEVER SHOWS FULL STEPS PLEASE LOOK AT THE IMAGE ABOVE

Answers

Answer:

+47°C

Explanation:

ΔT means change in temperature. If the change is positive, it means that heat was added and the temperature went up.

ΔT = final temp - initial temp

ΔT = 86°C -39°C = + 47°C

Elements can be described by their properties. Some of these properties are physical properties and some are chemical properties Observe the list provided. Which one of these contains ONLY Cchemical properties


A) C,E,F
B) B,C,E
C) B, E, F
D) C,D,E​

Answers

Its a c,e,f

Sadly i got it wrong

Flammability, Ability to rust and Ability to tarnish (C,E,F) are chemical properties of an element.

The property of an element is the characteristic feature of that element which helps us to differentiate it from another  element.

We have

The Physical proprieties- These are features of an element which we can identify by sight and touch, Some of them include colour, hardness, boiling and ,melting point, size etcChemical properties These are the features of an element which w\e observe when the element has undergone a chemical change which changes its composition. Examples are Flammability, rust, tarnish , corrosion etc.

See more here:https://brainly.com/question/2116116

All surfaces have texture, which means it affects how things move over it. When it takes a long time for friction to slow down an object, what is most likely true about the surface the object is moving on? The surface is dry. The surface is rough. The surface is uneven. The surface is smooth.

Answers

The question is incomplete, the complete question is;

All surfaces have texture, which means it affects how things move over it. When it takes a long time for friction to slow down and object, what is MOST LIKELY true about the surface the object is moving on? (A) The surface is dry (B) The surface is rough (C) The surface is uneven (D) The surface is smooth

Answer:

(D) The surface is smooth

Explanation:

Friction exists because of relative motion between two surfaces in contact with each other. However the magnitude of friction depends on how rough or smooth the surface is.

For smooth surfaces, there is little or no resistance to motion as objects move over the surface. Hence objects take a longer time to slow down on a smooth surface due to very little friction.

On a rough surface, objects tend to slow down relatively quickly. Hence, less resistance to motion on a smooth surface makes an object to take a longer time to slow down on a smooth surface than on a rough surface.

Answer: D

Explanation: Because if the surface is smooth it causes it to be more even for it to be able to cause Friction

if you find this helpful, Your welcome, if not, sorry.

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