How is hydrogen gas prepared in laboratory? Explain along with chemical equation.​

Answers

Answer 1

Answer:

The hydrogen gas is prepared in the laboratory required zink granules, dilute sulphuric acid or dilute hydrogen chloride, flask or woulfe’s bottle, and thistle funnel. by the downward displacement of water because it is a gas lighter than water

Reaction:

Zn  (s)+2HCl  (aq)  →ZnCl2(aq)+H2(g)

​Zn (s)+H2SO4(aq)→ZnSO4(aq)+H2(g)

The zinc granules are taken in a flask or Woulfe’s bottle and It is connected with the delivery tube to a water trough containing water. Dilute sulphuric acid is poured slowly from the thistle funnel. The hydrogen gas is released and collected in a gas jar by by the downward displacement of water as H2 gas lighter than water


Related Questions

can you help me please I'll give you brainiest promise :)

Dark-colored objects reflect more light than light-colored objects.

True
False

Answers

Answer:

False

Explanation:

Dark colored objects absorb light

Answer:

Dont mind this.

Compare revolution and rotation.

Answers

Answer:

When an object turns around an internal axis (like the Earth turns around its axis) it is called a rotation. When an object circles an external axis (like the Earth circles the sun) it is called a revolution.

Chemical weathering is different than mechanical weathering because what?

Answers

Answer:

Wedging, exfoliation and abrasion are all caused by the process of physical weathering.

Explanation:

Chemical weathering is weathering by erosional agents such as water, wind, mostly chemicals that interact wot water to form acids that react with the elements of the rocks. Physical changes in the structure of the rocks such as structural deformations, and is called mechanical weathering as its wear and tear of joints in rocks. Leading to the development of cracks and fractures in rocks, both the physical weathering leads to the breakdown of rocks and the formation of soil.

Absolute location describes where a place is compared to another place.

Question 3 options:
True
False

Answers

Answer:

False

Explanation:

Absolute location is the exact location. this question is saying the answer to relative location.

Answer:

False

Explanation:

Which of the following is true about Europe

A. Europe has a strong lumber industry that accounts for much of its exports.

B.more than one/half of Europe’s land area is used for agriculture

C. Europe has Small coal reserves but large oil and gas deposits

D. Europe’s fishing industry is just beginning to grow larger.

Answers

Answer:

D

Explanation:

Mostly located in the northern parts of the country as in Norway, Finland and Denmark, Iceland and Sweden. Most of these countries have high standards of living and most of them live in cities due to the availability of resources. The Alps are located in the western and eastern sides of the Mediterranean region.

The statement that is true about Europe is that Europe's fishing industry is just beginning to grow larger.

What do you mean by Europe?

Europe can be defined as the continent which is a part of Eurasia that is located in eastern hemisphere and northern hemisphere.

The fishery statistics states that the EU's total production of fishery products was estimated at 5.2 million tones. Europe's fishing industry is just beginning to grow larger.

Therefore, D is the correct option.

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The (blank) experience is volcanic activity and earthquakes due to plate tectonics as a result Japan is prone to at least four earthquakes a day

A. Cauldron of Japan
B. Pacific ring of fire
C. marianas trench
D. Taiwaneses rift

Answers

Answer:

its B.

Explanation:

The Ring of Fire is a region around much of the rim of the Pacific Ocean where many volcanic eruptions and earthquakes occur. The Ring of Fire is a horseshoe-shaped belt about 40,000 km long and up to about 500 km wide.

What are the top two compositions of magma? _________________________________

Answers

Answer:

mafic and felsic.________________________

what is the merit and demerit of a liquid culture medium?​

Answers

Answer:

Advantages of liquid culture- Liquid culture is suitable to use in test tubes to grow bacteria, and may reveal information about the oxygen(O₂) requirements of growing bacteria within. Disadvantages of liquid culture- Bacteria that grow in liquid media may not have specific characteristics.

the transfer of energy in an echosystem is an important activities that occur in a process called what​

Answers

Answer:

Energy flow is the amount of energy that moves through a food chain. ... Energy that is not used in an ecosystem is eventually lost as heat. Energy and nutrients are passed around through the food chain, when one organism eats another organism. Any energy remaining in a dead organism is consumed by decomposers.

The ability to do work or cause change is a. energy. b. data. c. science. d. technology. Please select the best answer from the choices provided

Answers

a) energy is the answer.

energy does work to operate and then it also causes machines and stuff in our home to have power and operate.

Answer:

a

Explanation:

Using complete sentences, explain some of the pros and cons of industrialization. ​

Answers

Answer:

One pro of industrialization is faster and cheaper production that makes products available more quickly and usually more cheaply. The overall economy tends to grow as more products become available. This leads to new products being developed as inventions and innovations flourish under the surplus of time, money, and demand. The negative side of industrialization can be seen in the death of specialty trades and craftsmanship that made consumer products unique and often more durable. In addition, industrialized factories lead to urbanization and extreme pollution.

Explanation:

The sentences, explain some pros and cons of industrialization are the faster and the used of the technology are the quickly. The cons are the pollution of the country are the more to the increased.

What is industrialization?

The act of manufacturing and producing things is known as industrialization. One of the main economic activities is industrialization. The adoption of new technologies and inventions has helped to tackle numerous issues associated with industrialization.

The American society is built on the period of Industrialization. There are further changes, such as individuals relocating to cities. As technology advanced, so did its impact. The disadvantages of industrialization include increased pollution.

As a result, the pros and cons of industrialization are the faster and the used of the technology are the quickly. The cons are the pollution of the country are the more to the increased.

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How is the development status of a country determined (developed,
developing, and so on)?

Answers

The correct answer is A. The Human Development Index (HDI)

Explanation

The Human Development Index (HDI) is an indicator of human development by country, prepared by the United Nations, which in recent years has evolved into the Inequality-Adjusted Development Index (HDI). It is an indicator of the average achievements obtained in the human development of the population of the countries. It is obtained from factors such as health and life expectancy at birth; that of education according to the average years of schooling of adults aged 25 and over and the expected years of schooling of school-age children. The standard of living dimension is measured according to GDP per capita. Therefore, the correct answer is A. The Human Development Index (HDI)

Answer: A. The Human Development Index (HDI)

Explanation: Ap3x Approved

How does a habitat protect animals give an example

Answers

Answer:

a habitat protecs animals by keeping them away  from other predators, for example if a species is endangered there more likely safe in a habitat than in the wilderness

srry if this is wrong :P peace

the Canadian government created the new territory of Nunavut in order to what

Answers

Answer:

Explanation:

Nunavut was created because of a number of reasons. Some of which is the need for self-government among the natives and their community. The self government move started albeit partially in the early part of the 1990s as Quebecois sovereignty movement. This helped to spread the idea of an Inuit controlled territory, which ended up coming to fruition as Nunavut

Please help me! :( I will do anything!

Answers

Answer:

If that is a river under ground its 3 but if it's not 100% 1

What causes the Pacific coast of Peru and Chile to have an arid climate?

Answers

Answer:

The Pacific coast of Peru and Chile tends to be arid because of the cold ocean currents that come from the Southern Ocean around Antarctica.

Explanation:

A big portion of the western coast of South America, or rather the Pacific coast, tends to arid or semi-arid. This is most dominant in Peru's and Chile's coastal areas, where we actually have the Atacama, the driest desert in the world. The reason for this is the influence of the cold ocean currents.

The cold ocean currents from the Southern Ocean around Antarctica move along the Pacific coast of South America. With the water being cold, the humidity is very low, meaning that the air masses coming with the ocean currents are dry. Dry air masses don't result in precipitation when they start to accumulate as they come upon a natural barrier like the Andes, so a big portion of Peru's and Chile's coastline is very dry.

CAN SOMEONE HELP WITH MY GEOGRAPHY WORK PLS
why is using aid to fund intermediate technology projects a good idea?
JUST GIVE ME SOME POINTS AND ILL EXPLAIN THEM MSYELFF

Answers

Answer:

i would say using aid to fund intermediate technology projects are a good idea to be . able to bulid tough technology because thye are suistainebale

Explanation:

why do we need to be concerned about the orientation of bedding planes and other sedimentary structures

Answers

Answer:

It helps with stratigraphic studies.

Explanation:

Bedding planes are the sheets that distinguish each successive layer of a stratified rock from its preceding layer, also known as sedimentary planes or stratification planes.

When one layer of sediment that is completely different from the former is formed or created over the old layer, bedding is said to have occured. This new layer may comprise of sand and tiny stones (called pebbles) or other sedimentary material. Because the components of the each new successive layer are totally different from the former in terms of composition, there is a marked division between each of them identifable by their quality and colur.t

The study of each of these layers to ascertain their time scale which provides basis for studies in historical geology is called stratigraphic studies.

The initial placement of strata in geologically diverse terrains is suggested in stratigraphical studies and the depositional nature of the sediment is established.

Cheers

Which type of rock is non-foliated metamorphic rock?
A.gneiss
B.limestone
C.marble
D.slate

Answers

Answer:

Marble

(Sorry if I'm wrong)

Answer:

Genius

Explanation:

The minimum temperature is.....
I will give brainliest to anyone who is correct.
Attached in file

Answers

Less than 10 I guess
I’m pretty sure you would answer and say less than 10 but if it wants like specific answers than probably either 9 or 8

The images above depict two types of metamorphic rock. What description best matches these images?
A)
Both images depict foliated rock.
B)
Both images depict nonfoliated rock.
The left image is foliated rock while the right image in nonfoliated.
D)
The left image is nonfoliated rock while the right image in foliated.

Answers

Answer:

i have the same question. let me know what's the answer pls! I think it's d but im

not sure

Explanation:

Answer:

b

Explanation:

( rock on the left is foliated. while the right image in nonfoliated)

k12 usatestprep

When did the UN create a Jewish/Palestinian state between the Jordan River & Mediterranean Sea?

Answers

Answer:

After WW2 one of the main questions was what to do with remaining Jewish population. As many were killed during the war UN decided to allow them to create a country in their homeland. That is how the state of Israel was created in 1947.

Explanation:

Unluckily, the creation of this state  created a large dispute that still hasn't been solved. Namely, Muslim population of the area is not satisfied with the treatment they are receiving after this state was created.

Palestine was since then divided into two parts.

Which is precisely defined using the underlined terms point and plane?

Answers

A line segment is precisely defined using the undefined terms point and plane. These three terms are undefined terms in geometry. A point has no dimension. A plane has no thickness but extends at all directions. A line has no thickness but extends in one dimension.

In Geometry, we define a point as a location and no size. A line is defined as something that extends infinitely in either direction but has no width and is one dimensional while a plane extends infinitely in two dimensions. There are three undefined terms in geometry. And the third undefined term is the line.

Please select the word from the list that best fits the definition Radiation from the sun provides ______ for the water cycle.

Answers

Answer:

energy

Explanation:

The "water cycle" is also known as "hydrologic cycle." It replenishes the water on Earth through a cycle, which is essential for maintaining life and balance on Earth.

The "Sun" plays a vital role in the water cycle process. It fuels it and makes the different processes possible. For example, it allows water to evaporate from the different bodies of water like the rivers, lakes, streams and so on. Heat is being transferred from the Sun to the Earth through radiation, and this allows the liquid state of matter on Earth to change to its gaseous state.

How do you locate a dew point?

Answers

Answer:

give brainliest please

Explanation:

1.Ts is the dew point;

2.T is the temperature';

3.RH is the relative humidity of the air;

4.a and b are coefficients. For sonntag90 constant set, a =17.62 and b=243.12*C

5.a(T,RH) = In(RH/100)+ aT/(b+T)

What evidence can be used that the Great plains was formed before the Rocky mountains?​

Answers

Answer:

We know that the Great Plains are older than the Rocky Mountains because the Great Plains are more eroded than the Rocky Mountains.

Which of the following is NOT an intrusive igneous body? A. Stock B. Lahar D. Batholith​

Answers

Answer:

b. lahar

Explanation:

Lahar is not an intrusive igneous body. Thus, option B (Lahar) is the correct option.

What is Igneous intrusion?

An igneous intrusion, also known as an intrusive body or simply an intrusion, is a body of intrusive igneous rock that occurs as lava slowly cools under the Earth's surface and crystallizes. There are many different shapes and components that make up intrusions. Due of how well-insulated the solid country rock is that the magma intrudes into, cooling of the magma cools very slowly, and intrusive igneous rock is coarse-grained (phaneritic).

According to their mineral composition, intrusive igneous rocks are distinguished from extrusive igneous rocks. For categorizing intrusive igneous rocks, the relative proportions of quartz, alkali feldspar, plagioclase, and feldspathoid are crucial. Existing country rock must be moved to create area for intrusions. The room problem is the question of how this occurs, and it is still being actively researched for many different types of invasions.

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What type of rock lines the ocean floor?

Answers

Answer: Igneous rock

Explanation: . Igneous rock is formed by the cooling and crystallization of molten magma at volcanoes and mid-ocean ridges, where new crust is generated. Examples of igneous rock are basalt, granite, and andesite (Fig. 7.57 A).

Can someone please help me?
The questions is: Suggest one of the disadvantages of being a single export country.

I just don't understand what they mean by the term "single export country". It will also be helpful if you could give me some brief points explaining the disadvantages and I can then further explain them in my work. Thank you :)

Answers

Answer:

Disadvantages of Exports

Fluctuation in foreign exchange rate. ...

Economic conditions in importing country. ...

Political conditions in importing country. ...

Change in regulation in importing country. ...

Rivalry between nations. ...

Socio barriers. ...

Higher working capital requirement. ...

Credit risk.

of my mom and teacher are really strict how do I get out of school?​

Answers

Answer:

Online school: You unfortunately do not as I have learned ;-;

Real school: Pretend to be sick.

Explanation:

EVERYONE IT IS TIME TO RISE UP AND TAKE DOWN THE MODS. I had only had my account for six days and it got removed. If you are tired of your answers always getting taken down copy this question and post it as many times as you can. We will NOT stand for this. If you get banned make another account. If they take down your question post it again. Mods, listen to me and listen well WE HAVE HAD ENOUGH.

Answer:

are u on zoo0m if u are u can  put ur backrgound as u like a video for a minute of u paying attention so u dont have to do school

Explanation

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