The height that mercury reaches in the tube of a manometer ................on the diameter of the tube.

Answers

Answer 1

Answer:

does not depend

Explanation:

Answer 2

Answer:

DO NOT DEPENDED

Explanation:

I hope it's help u


Related Questions

Why isn’t a dream made of matter?

Answers

Most dreams are so mundane that we forget about them almost immediately after they occur. Amusingly, Freud attributed this amnesiac disposition to the actual content of dreams. According to him, the content is so intensely sexual and violent that our mind must repress it in order to maintain its health.

12. The smallest unit of an element that has all of the properties of the element is a/an
A. molecule.
B. cell.
C. atom.
D. neutron.

Answers

The answer is C: atom

n atom is a particle of matter that uniquely defines achemical element. An atom consists of a central nucleus that is usually surrounded by one or more electrons. Each electron is negatively charged. The nucleus is positively charged, and contains one or more relatively heavy particles known as protons and neutrons.

Answer:

Explanation:

You have given the exact definition of what an atom is. It is the smallest entity that has all the same properties as a bunch of atoms put together.

1. Hydrogen and nitrogen combine to form ammonia. When nitrogen and hydrogen bond, nitrogen pulls the electrons from hydrogen toward itself. Which statement about the reactants is correct?
A) Hydrogen is oxidized, and nitrogen loses electrons.
B) Hydrogen is oxidized, and nitrogen is reduced.
C) Hydrogen gains electrons, and nitrogen is reduced.
D) Hydrogen is reduced, and nitrogen is oxidized.

2. Which phrase best defines a redox reaction?

A) A reaction in which the number of oxygen atoms is reduced.
B) A reaction in which elements are transferred between different atoms.
C) A reaction is which oxygen combines with different atoms.
D) a reaction in which elements are released from the system.

3.Which statement describes the process of oxidation?

A) Oxidation results in a loss of electrons, so the oxidation number increases.
B) Oxidation results in a gain of electrons, so the oxidation number increases.
C) Oxidation results in a gain of electrons, so the oxidation number decreases.
D) Oxidation results in a loss of electrons, so the oxidation number decreases.

4. Which chemical equation represents a redox reaction?
A) TiCl4(s) + 2H2O(g) → TiO2(s) +4HCl(g)
B) CaO(s) + SiO2(s) → CaSiO3(l)
C) CaCO3(s) → CaO(s) + CO2(g)
D)Fe2O3(s) + 2Al(s) → Al2O3(s) +2Fe(l)

5. Which elements are oxidized and reduced in the reaction below?
Br2 (l) + 2NaI(aq) → I2 (s) + 2NaBr(aq)

A) Bromine (Br) is oxidized, and iodine (I) is reduced.
B) Iodine (I) is oxidized, and bromine (Br) is reduced.
C) Sodium (Na) is oxidized, and bromine (Br) is reduced.
D) Bromine (Br) is oxidized, and sodium (Na) is reduced.

Answers

Answer:

did you do it yet?

Explanation:

Answer:

1. Hydrogen is oxidized, and nitrogen is reduced.

Explanation:

Three students are labeling organisms in their diorama. Zola wants to label the algae and mushrooms as photosynthetic. Saffi wants to label plants and algae as photosynthetic. Ahmed wants to label plants and all bacteria as photosynthetic. Who is correct?
-Saffi and Ahmed
-Zola only
-Saffi only
-Zola and Ahmed

Answers

Answer:

Saffi only

Explanation:

I just took the test and that was the correct answer :)

- Explain the relationship between electronic structure and the chemical
properties of an element.

Answers

Answer: There is a relationship between the electron configuration of an element and its resulting chemical/physical properties. Atoms of an element like to have a full octet of electrons in their valence shells. ... Other elements need to lose or gain electrons to obtain an octet.

:

According to the following map, what is a type of mineral found in Mexico?
a Bauxite
b Copper
c Gold
d Zinc​

Answers

Answer:

B. Copper

Explanation:

According to the map, the minerals found there are:

IronSilverCopper

The only mineral given as an option is copper. Therefore, the answer is B.

most elements are (1) metals (2)nonmetals (3)gases (4)made in labs

Answers

Most are metals!!!
None are made in labs everything on earth is made of the elements so they are natural!

What volume of 0.205 MK2S solution is required to completely react with 185 mL of 0.120 MCo(NO3)2?

Answers

Answer:

the balanced equation for the above reaction is as follows;

3NiCl₂ + 2K₃PO₄ ---> Ni₃(PO₄)₂ + 6KCl

stoichiometry of NiCl₂ to K₃PO₄ is 3:2

the number of NiCl₂ moles reacted - 0.0102 mol/L x 0.134 L = 0.00137 mol

according to molar ratio  

if 3 mol of NiCl₂ reacts with 2 mol of K₃PO₄

then 0.00137 mol of NiCl₂ reacts with - 2/3 x 0.00137 = 0.000911 mol of K₃PO₄

molarity of given K₃PO₄ solution - 0.205 M

there are 0.205 mol in 1000 mL  

therefore volume of 0.000911 mol - 0.000911 mol / 0.205 mol/L = 4.44 mL  

volume of K₃PO₄ needed is 4.44 mL

EXPERIMENT 4 : TYPES OF PLATE BOUNDARY

Answers

Answer:

Movement in narrow zones along plate boundaries causes most earthquakes. Most seismic activity occurs at three types of plate boundaries—divergent, convergent, and transform. As the plates move past each other, they sometimes get caught and pressure builds up.

Explanation:

What can you infer from the fact that nitrogen gas is useless to animals?

Answers

Answer:

Denitrification changes nitrogen into a gaseous form.

Explanation:

b) How much Phosphorus Pentachloride can be made if you begin with 17.8 g of chlorine gas?

Answers

The answers is that 16.8 g is gas

Balance the following equations:

1.
Fe(s)+ O2(g) —> Fe2O3(s)

Answers

Answer:

4Fe(s)+3O2(g) ----> 2Fe2O3(s)

What is the
name of the
compound
Na2Co3?

Answers

Answer:SODIUM CARBONATE

Explanation:

What mass of aluminium is needed to react with 640g of iron oxide

Answers

Answer:

13.5g

Explanation:

Mole measure the number of elementary entities of a given substance that are present in a given sample. Therefore, 138.8g of aluminium is needed to react with 640g of iron oxide.

What is mole?

The SI unit of amount of substance in chemistry is mole. The mole is used to measure the quantity or amount of substance. We know one mole of any element contains 6.022×10²³ atoms which is also called Avogadro number.

Mathematically, the balanced equation can be written as

3Fe[tex]_2[/tex]O[tex]_3[/tex] + 4Al [tex]\rightarrow[/tex] Al[tex]_2[/tex]O[tex]_3[/tex] + 6Fe

number of moles of iron oxide= 640/159.6

                               =4.01

number of moles of aluminium =(4/3)×4.01

                                =5.34moles

mass of aluminium =5.34×26

                               =138.8g

Therefore, 138.8g of aluminium is needed to react with 640g of iron oxide.

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How
many
moles is 2.55 X 1026 atoms of Neon?

Answers

Answer:

423.44 moles

Explanation:

why does a diprotic acid dissociate in a stepwise manner

Answers

Because they have the ability to supply exactly two protons.

Hope this helps!

A diprotic acid dissociates in a step wise manner as it has two protons and it looses one proton each in each dissociation step.

What are acids?

Acids are defined as substances which on dissociation yield H+ ions , and these substances are sour in taste. Compounds HCl, H₂SO₄ and HNO₃ are acids as they yield H+ ions on dissociation.

According to the number of H+ ions which are generated on dissociation acids are classified as mono-protic , di-protic ,tri-protic and polyprotic  acids  depending on the number of protons which are liberated on dissociation.

Acids are widely used in industries  for  production of fertilizers, detergents  batteries and dyes.They are used in chemical industries for production of chemical compounds like salts which are produced by neutralization reactions.

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Describe ions of xenon

Answers

Answer: a common ion of xenon is fluoride-ion. xenon oxide difluoride is also a fluoride-ion acceptor, forming the only other anion containing xenon in the +4 oxidation state, the XeOF3− anion in Cs+XeOF3−. Xenon hexafluoride is both a strong fluoride-ion donor and a strong fluoride-ion acceptor.

a substance that can be broken down into simpler substances

Answers

Answer:

compound

Explanation:

hope this hepls

need help!!
Is the atomic number of an atom equal to the electrons in an atom​

Answers

Answer:

YES.

Explanation:

The atomic number is the number of protons. Because the number of protons is EQUAL to the number of electrons, they're basically equal.

what is the net cell reaction for the chromium-silver voltaic cell?

Answers

Cr(s) → Cr3+(aq) + 3e-Ag+(aq) + e- → Ag(s)

To solve such this we must know the concept of chemical reaction. Therefore, the balanced  net cell reaction for the chromium-silver voltaic cell is Cr(s)+3Ag⁺(aq)→Cr³⁺(aq)+3Ag(s)

What is chemical reaction?

Chemical reaction is a process in which two or more than two molecules collide in right orientation and energy to form a new chemical compound. The mass of the overall reaction should be conserved. There are so many types of chemical reaction reaction like combination reaction, double displacement reaction. Chromium-silver voltaic is a cell that is used in electrochemistry.

The balanced net cell reaction for the chromium-silver voltaic cell is

Cr(s)+3Ag⁺(aq)→Cr³⁺(aq)+3Ag(s)

Therefore, the balanced net cell reaction for the chromium-silver voltaic cell is

Cr(s)+3Ag⁺(aq)→Cr³⁺(aq)+3Ag(s)

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2. Which diagram represents deposition?
A liquid —>solid
B gas-> Solid
C liquid->gas
D solid—>gas

Answers

your answer would be B I’m pretty sure.

How does collision theory relate temperature to the rate of a reaction?​

Answers

Answer:

Explanation:

The collision theory explains why reactions occur between atoms, ions, and molecules. With the increase in temperature, there is an increase in the number of collisions. Increasing the concentration of a reactant increases the frequency of collisions between reactants and will, therefore, increase the reaction rate.

as heat is added to melt ice. Does the temperature change?

Answers

Answer:

Depending on the deformity it will depend on the amount of the ice that is melted,it the majority is melted that is relevant to the heated liquid melting the ice,so yes only the water formalities of the melted ice.

What is a chemical bond?
A. An intramolecular force holding 2 atoms together
B. An attractive force between 2 molecules
C. A gravitational force holding electrons in their orbits
D. An electrostatic force between a proton and an electron

Answers

A chemical bond is an electrostatic force between a proton and an electron. Hence, option D is correct.

What is a bond?

A chemical bond is what holds atoms together in molecules.

A chemical bond is what holds atoms together in molecules.

Bonds arise from the electrostatic forces between positively charged atomic nuclei and negatively charged electrons (the positions of which in space are determined by quantum mechanics).

Hence, option D is correct.

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Which of the following forms of alcohol can be consumed? A. Propanol B. Methanol C. Butanol D. Ethanol Please select the best answer from the choices provided. A B C D.

Answers

Answer:

D. Ethanol

Explanation:

because Propanol, Methanol and Butanol are not safe to consume. soo the answer is Ethanol

Ethanol forms of alcohol can be consumed.

What is ethanol?Ethanol is used in the manufacture of medication, plastics, lacquers, polishes, plasticizers, and cosmetics. Ethanol is used in medicinal drugs as a topical antiinfective, and as an antidote for ethylene glycol or methanol overdose.Industrial merchandise containing ethanol include beverages, perfumes, aftershaves and colognes, medicinal liquids, mouthwashes, liniments, and a few rubbing alcohols.within the worst cases, there will also be breathing issues, low blood strain, incontinence heart issues, blood issues, liver damage, and demise. Ethanol may also dry out and irritate the pores and skin; there may be aches, redness, and swelling. Eye exposure to ethanol can also cause tearing, burning, and stinging.

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How does the space between particles change as energy is added

Answers

When energy is added to them the space between the particles slowly increases and when energy is lost it slowly decreases.

the elements on the periodic table are arranged in order of increasing

Answers

Answer:

atomic number

Explanation:

Which of the following molecules contains a covalent bond? (Use the electronegativity values from the periodic table to help you answer this question.)

Answers

CN- is the molecule which contains a covalent bond in this scenario.

What is Covalent bond?

This is the type of bond formed as a result of sharing of electrons between atoms of elements.

It exists in the reaction between compounds between two electronegative elements such as carbon and nitrogen to form cyanide.

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which electron carrier is not mobile or diffusible in the mitochondrial electron transport chain?

Answers

Answer:

FAD is the correct answer

Explanation:

pls choose it as the brainiest answer

 

If you have a ring that contains 1.94 g of gold, how many atoms of gold are there in the ring?

Answers

the molar mass would be 197.0 g
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