. Nếu dẫn 0,01 mol CO2 vào 50 ml dung dịch Ba(OH)2 0,1M thì sau phản ứng thuđược

A. BaCO3

B. Ba(HCO3)2

C. BaCO3 vàBa(HCO3)2

D. BaCO3 vàBa(OH)2

Answers

Answer 1
K=nCo2/nBa(OH)2=0,01/5*10^-3=2
Chỉ thu dc Ba(HCO3)2

Related Questions

PLEASE ANSWER NEED HELP!!!!!!!! PLEASE THE CORRECT ANSWER!!!!!!


Ivan has decided that he is going to work on having a more positive body image. What result should he hope for?
A.
He should feel good about his body and accept any flaws.
B.
He should look for compliments from friends and family about his body.
C.
He should love everything about his body and think he is very attractive.
D.
He should be happy with himself after following a strict diet and exercise routine.


PLEASE NO LINKS

Answers

Answer:

D

Explanation:

Hope it helps

The result he hope for he should be happy with himself after following a strict diet and exercise routine.

What is fitness?

Fitness is defined as to be able to go about one's everyday activities without difficulty, without getting exhausted, and with enough energy to spare for leisure. Body composition, flexibility, muscular strength, muscular endurance, and cardiorespiratory endurance are the five facets of physical fitness. Physical activity can strengthen your bones and muscles, help you maintain a healthy weight, increase your ability to carry out daily tasks, and improve your cognitive health.

Exercise is defined as a bodily action that maintains or improves physical health and wellness overall.  Exercise science is a field that investigates movement as well as the corresponding functional reactions and adaptations.

Thus, the result he hope for he should be happy with himself after following a strict diet and exercise routine.

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What did Democritus call small, indivisible particles that make up?​

Answers

Answer:

atomos

Explanation:

2,500 years ago, Democritus suggested that all matter in the universe was made up of tiny, indivisible, solid objects he called "atomos." However, other Greek philosophers disliked Democritus' "atomos" theory because they felt it was illogical.

renal calculi contain crystallized calcium, magnesium, and uric acid. explain why patients with hyperparathyroidism would be at risk for developing renal calculi.

Answers

Patients with hyperparathyroidism would be at risk for developing renal calculi because of high calcium levels excreted by the kidney.

Hyperparathyroidism occurs when there is over secretion of parathyroid hormone by the parathyroid glands.

The parathyroid hormone is responsible for the following in the body:

Release of calcium by bones into the bloodstream.

Absorption of calcium from food by the intestines, and

Conservation of calcium by the kidneys.

Renal calculi are strong masses of stones deposited in the kidneys or urinary bladder.

When there is excess calcium in the blood due to hyperparathyroidism, the kidneys would be over burdened with the excretion of excess calcium.

That extra calcium in the kidney & the urine leads to kidney stone development ( renal calculi).

Therefore, patients with hyperparathyroidism would be at risk for developing renal calculi because of high calcium levels excreted by the kidney.

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What is q in chemistry.

Answers

Answer:

The reaction quotient!

Explanation:

hope this helped :D

calculate the number of atoms in 1009g of neon

Answers

This is kind of a pretty easy question:

- In order to get the number of atoms/entities of Neon, you will have to turn that 1009g of Neon into moles

-And then you have to use the moles and calculate it using Avogadro's Number which is 6.02 x 10^23

number of moles = mass/molar mass of element/compound

n = 1009g/20.18g/mol

n = 50 mol

Number of atoms/entities = 50 x  (6.02 x 10^23)

Number of atoms in 1009g of neon is 3.01 x 10^25 (scientific notation because its a really long number)

Escribe la relacion entre las actividades humanas y el cambio climatológico
ayudaaaaaaaaaaa plisssssssssssss

Answers

English:

"Human activities contribute to climate change by causing changes in Earth's atmosphere in the amounts of greenhouse gas- es, aerosols (small particles), and cloudiness. The largest known contribution comes from the burning of fossil fuels, which releases carbon dioxide gas to the atmosphere." (ei.lehigh.edu)

Have a nice day!

  I hope this is what you are looking for, but if not - comment! I will edit and update my answer accordingly. (ノ^∇^)

- Heather

/

Español:

"Las actividades humanas contribuyen al cambio climático al provocar cambios en la atmósfera de la Tierra en las cantidades de gases de efecto invernadero, aerosoles (partículas pequeñas) y nubosidad. La mayor contribución conocida proviene de la quema de combustibles fósiles, que libera dióxido de carbono a la atmósfera." (ei.lehigh.edu)

¡Que tenga un lindo día!

  Espero que esto sea lo que estás buscando, pero si no, ¡comenta! Editaré y actualizaré mi respuesta en consecuencia. (ノ^∇^)

- Heather

PLEASE HELP!! 25 points!! Are these sentences true or false

1.) A machine with a mechanical advantage greater than 1 multiplies force

2.)A machine with mechanical advantage less than 1 multiplies distance

Answers

Answer:

True

Explanation:

Brainless if it helped

Which element has 1 valence electron in its outer shell and will react with a
group 17 element in a 1:1 ratio?

Answers

Answer:

sodium (Name) and Chlorine (Cl)

Explanation:

Any of the Group 17 elements (the halogens) only need one additional electron to take on the electron configuration of the noble gas just to it's right. That would be argon (Ar) in this case.

For this reaction, the needs of both elements (to reach a stable Group 17 electron configuration) is matched: Just one electron is provided (Na) and taken (Cl) and that forms a single bond

What is the role of cellular respiration in organisms?

to provide energy for photosynthesis
to provide energy for breaking apart fuel molecules
to provide energy for making oxygen
to provide energy for cell activity

Answers

Answer:

C. sorry if I'm wrong ...................

balance equation for H2O+O2-H2O2

Answers

Hydrogen peroxide is generated in the course of peroxisomal fatty acid oxidation and purine catabolism, and is rapidly converted to water and molecular oxygen by the enzyme catalase.

which best represents the number of moles in exactly 130 grams of potassium metal?

Answers

Answer:

if by EXACTLY means 130.0000, then the answer is 3.3250

by EXACTLY means 1.299 <Kmass<1.301 then the answer is 3.33

EXPLANATION

which best represents the number of moles in exactly 130 grams of potassium metal?

the elemental mass of K is 39.098

so exactly 130 divided by 39.098 = 3.3250

if by EXACTLY means 130.0000, then the solution is 3.3250 by EXACTLY means 1.299 <Kmass<1.301 is 3.33

What is Potassium Metal?

Potassium metal responds rapidly with atmospheric oxygen to create flaky white potassium peroxide in exclusively moments of exposure.

It stood preferably isolated from potash, the ashes of plants, from which its appellation derives.

In the systematic table, potassium is one of the alkali metals, all of which have a single valence electron in the outermost electron shell,

That is easily drawn to produce an ion with a positive charge a cation, that connects with anions to form salts. Potassium in disposition materializes only in ionic salts.

When the elementary mass of K is 39.098

Therefore, exactly 130 divided by 39.098 is = 3.3250

Find more information about Potassium Metal here:

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Unless otherwise instructed, you may use the periodic table in the Chemistry:
question.
What is the molar mass of ammonia (NH,)?
o 15 g/mol
o 17 g/mol
42 g/mol
43 g/mol

Answers

Answer:

17 g/Mol

Explanation:

To determine the molar mass of any compound, you have to add up the molar masses of every atom that make up the respective compound. In this case NH3 equals one nitrogen atom and three hydrogen atoms.

What does that mean? Ammonia's molar mass will be the sum of the molar mass of one nitrogen atom and 3 times the molar mass of a hydrogen atom.

Peroindic table:

N=14.0067 g/mol.

H=1.00794 g/mol

(Help me out )
When a single electron returns to the ground state from an excited state, it emits___

1. A continuous spectrum of all wavelengths of light

2. A line spectrum of 2 or more wavelength of light

3. A single, specific wavelength of light

4. No light

Answers

Answer:

3) A single specific wavelength

Explanation:

When an electron returns to ground state, it has to emit a single photon.

When a single electron returns to the ground state from an excited state, it emits a single, specific wavelength of light. Therefore, option 3 is correct.

What is wavelength ?

The separation between any two points in a wave and those identical points in the following wave cycle. This can be null-to-null, crest-to-crest, trough-to-trough, etc.

A spectrum is the term used to describe the range of wavelengths or frequencies for wave phenomena. The term was originally used to describe the electromagnetic spectrum, but it is now used to describe the sound spectrum and vibration spectrum.

When electromagnetic radiation such as radio waves, light waves, or infrared waves travel across space, they leave behind distinctive patterns. Each wave has a distinct size and form. Wavelength is the separation between peaks.

Thus, option 3 is correct.

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which compound should have the largest lattice energy?

Answers

Answer:

From the given compounds MgO has the highest lattice energy.

Which of the following is NOT a conductor of heat?
A. a plastic pot handle
B. a copper pan
C. a metal spoon

Answers

Answer:

A) A plastic pot handle.

Explanation:

Metals are very good conductors of heat because they contain delocalised electrons that can flow through the metal, transferring heat.

Both a copper pan and a metal spoon are made of metals, so are very good conductors of heat.

Plastic is an insulator, the opposite of a conductor. This makes it very bad at conducting heat, which is why it is used as the handle (it stops you burning yourself when you hold the pot). The answer is therefore A.

A- plastic pot handle

Which statement describes the hydrogen and oxygen atoms in water?

The lone pair of electrons in each hydrogen atom causes the molecule to be bent; the oxygen atom has a partial positive charge, while the hydrogen atoms have partial negative charges.

The lone pairs of electrons in the oxygen atom causes the molecule to be bent; the oxygen atom has a partial positive charge, while the hydrogen atoms have partial negative charges.

The lone pairs of electrons in the oxygen atom causes the molecule to be bent; the oxygen atom has a partial negative charge, while the hydrogen atoms have partial positive charges.
The lone pairs of electrons in the oxygen atom causes the molecule to be bent; the oxygen atom has a partial negative charge, while the hydrogen atoms have partial positive charges.

Answers

Answer:

1. Q: How does a phase change from solid to liquid occur in a substance?

A. Heat energy is added to the substance, weakening the electrical attraction between molecules.

2. Q: How do weak intermolecular bond strengths affect the melting and boiling point of a substance?

A: Both the melting point and boiling point are lower.

3. Q: Which term or phrase represents a separation of charges in a molecule, resulting in partial positive and partial negative charges?

A: Dipole

4. Q: Which statement explains why water and ethanol have different boiling points?

A: Water and ethanol have different molecular structures

5. Q: Which statement describes the hydrogen and oxygen atoms in water?

A: The lone pairs of electrons in the oxygen atom causes the molecule to be bent; the oxygen atom has a partial negative charge, while the hydrogen atoms have partial positive charges.

Explanation:

Did it

The statement which best describes the hydrogen and oxygen atoms in

water is that the lone pairs of electrons in the oxygen atom causes the

molecule to be bent; the oxygen atom has a partial negative charge, while

the hydrogen atoms have partial positive charges.

Water is a compound which comprises of the elements hydrogen and

oxygen. They  share electrons in the covalent bond present between the

atoms. The sharing of electrons isn't equal which is why it has a bent

structure.

The oxygen atom has a partial negative charge, while the hydrogen atoms

have partial positive charges present in the compound.

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Calculate the molecular mass of the element

They give:H=1,AI=27,S=32,0=16,Cu=64,P=31,Mg=24,N=14,Na=23

Answers

Answer:

Mg (NO3)2

24 + 2×(14+ 3×16)

24+2×(14+48)

24+2×(62)

24+ 124

=148g

Help with Complex Ions!


Determine the [Ag+] present in solution at equilibrium when the complexing agent ammonia is added to a 0.025 M solution of AgNO3 to result in a [NH3]eq = 0.15 M.


Solubility constant (Ksp) for Ag(NH3)2 2+ is 1.7 * 10^7.

Answers

The concentration of [Ag+] present in the solution is 6.53 × 10⁻⁸ M

From the given information, the equation for the reaction between silver ion and ammonia can be represented as:

Ag⁺ + 2NH₃ ↔ [Ag(NH₃)₂]⁺

Given that the solubility constant (Ksp) for the product formed = 1.7 × 10⁷.

The solubility constant for this reaction can be expressed as:

[tex]\mathbf{Ksp = \dfrac{[Ag(NH_3)_2]^+}{[Ag^+][NH_3]^2} }[/tex]

where;

concentration of ammonia = 0.025 Mconcentration of silver nitrate = 0.15 M

[tex]\mathbf{1.7 \times 10^7 = \dfrac{0.025}{(x)(0.15)^2}}[/tex]

[tex]\mathbf{1.7 \times 10^7 = \dfrac{1.1111}{x}}[/tex]

[tex]\mathbf{x = 6.54 \times 10^{-8} \ M}[/tex]

Therefore, we can conclude that the concentration of  [Ag+] = x = 6.54 × 10⁻⁸ M.

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Why are you more likely to become dehydrated in hot weather?

Answers

Answer:

sweat

Explanation:

you get dehydrated in hot weather because your body will release sweat to try and keep you cool

Answer:

Well, the heat can sometimes be very subtle in how it affects the body. If you're out in the sun, it can take just 30 minutes or up to a few hours for the heat to cause dehydration, nausea or it could cause trouble concentrating. When it's hot and humid, your risk of dehydration and heat illness increases. That's because when the air is humid, sweat can't evaporate and cool you as quickly as it normally does, and this can lead to an increased body temperature and the need for more fluids.

I HOPE DAT THIS HELPS :)

Explanation:

The _______________ emits radiant energy toward Earth’s surface

Answers

Answer:

The Sun is your answer.

Explanation:

it is.

Can someone help me with my science it’s super hard :(

Answers

Answer: here is a description of what they look like since I cannot see the diagram.

Mitochondria- wavy line

Ribosomes- little dots

Chromosome- X

Nucleus- Circle with bite taken out of it

Endoplasm- Bubble

Nuclear membrane- Outer layer/bubble

Golgi-wavy circle thing

Vacuole- Bigger circle (but not nucleus)

Cytoplasm- its the jelly on the inside

Cell wall- only in plant cells, looks like a box

Cell membrane- The outmost part of the animal cell, the barrier.

I sure hope this helps!!!

_____ is the tendency of an atom in a compound to attract electrons (F is super attractive and Fr is super unattractive).

Answers

The answer is Electronegativity.

How did the scientists create atoms of element 115

Answers

Answer:

With ions of calcium in a cyclotron. This produced four atoms of moscovium. Moscovium is a synthetic element with the symbol Mc and atomic number 115. It was first synthesized in 2003 by a joint team of Russian and American scientists at the Joint Institute for Nuclear Research (JINR) in Dubna, Russia. In December 2015, it was recognized as one of four new elements by the Joint Working Party of international scientific bodies IUPAC and IUPAP. On 28 November 2016, it was officially named after the Moscow Oblast, in which the JINR is situated.[7][8][9]

Moscovium is an extremely radioactive element: its most stable known isotope, moscovium-290, has a half-life of only 0.65 seconds.[10] In the periodic table, it is a p-block transactinide element. It is a member of the 7th period and is placed in group 15 as the heaviest pnictogen, although it has not been confirmed to behave as a heavier homologue of the pnictogen bismuth. Moscovium is calculated to have some properties similar to its lighter homologues, nitrogen, phosphorus, arsenic, antimony, and bismuth, and to be a post-transition metal, although it should also show several major differences from them. In particular, moscovium should also have significant similarities to thallium, as both have one rather loosely bound electron outside a quasi-closed shell. Over a hundred atoms of moscovium have been observed to date, all of which have been shown to have mass numbers from 286 to 290.

Explanation:

Hope this helps u please make brainlyest

Using calcium ions in a cyclotron. As a result, four moscovium atoms were created. Moscovium is a man-made element with the atomic number 115 and the symbol Mc

Where was the element 115 created for first time ?

Heavy ion collisions in particle accelerators have intentionally produced element 115, also known as Moscovium. So far, about 100 atoms have been seen.

At the Joint Institute for Nuclear Research (JINR) in Dubna, Russia, a team of Russian and American scientists initially created it in 2003.

It was acknowledged as one of four new elements by the Joint Working Party of the worldwide scientific organisations IUPAC and IUPAP in December 2015. It was formally named after the Moscow Oblast on November 28, 2016.

Thus, Element 115 i.e. moscovium was created using calcium ion of cyclotron.

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Will give 100 brainly points and brainlyest if you help plz
You will need the following items: a rope about 10 to 20 meters long, a meter or yard stick, a watch that records seconds, and a helper. Tie one end of the rope to a doorknob or other secure object at about waist height. Have your helper take one end of the rope and whip it up and down

Answers

Explanation:

i need to do it or what do i nedd

Answer:

Creating A Wave w/ rope

1 . The wave I created is a transverse wave, this is because the wave was moving in a perpendicular direction.

2. 20 Meters

3. 60 Hz

4. 1200 m/s

Creating A Wave w/ a slinky

1. The wave I created was a longitude wave, this is because the wave was moving parallel and the medium was going left.

2. 2 meters

3. 123 Hz

4. 246 m/s

Explanation:

I rally hope this helps you!!

Happy holidays!! <33

I WILL GIVE BRAINLIST!!!!!!!!!! HELPPPPPP (Learning Newtons Law) A 0.5 kg tennis ball, a 2 kg basketball, and a 5 kg bowling ball are all falling at the same speed.


Which has more momentum?


A: the 0.5 kg tennis ball



B: the 2 kg basketball



C: the 5 kg bowling ball



D: the all have the same momentum
Hurry!!! Only got a couple mins!!!

Answers

The momentum of the bowling ball will be greater than the rest balls.

The correct answer to the question is Option C. The 5 kg bowling ball

Momentum is defined as the product of mass and velocity i.e

Momentum = mass × velocity

If we keep the velocity of the object constant, the momentum will depend on the mass of the object.

Thus, the higher the mass, the greater the momentum and the lesser the mass, the smaller the momentum.

From the question given above,

Mass of tennis = 0.5 Kg

Mass of basketball = 2 Kg

Mass of bowling ball = 5 kg

We can see that the bowling ball has a higher mass.

Therefore, the momentum of the bowling ball will be greater than the rest balls.

The correct answer to the question is Option C. The 5 kg bowling ball

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Is the following sentence true or false?
The properties of a metal are related to bonds within the metal,​

Answers

Answer:

True.

Explanation:

In metallic bonds, nuclei of metal atoms line up uniformly and the electrons are delocalized (spread out evenly). Since this allows electrons to move around freely, and electricity is created by the flow of electrons, metals can conduct electricity.

changing the position of the .. increases or decreases your effort ..

Answers

Increases

The pulley is normally fixed to a support above the load. The load is tied to one end of the rope and the effort is applied at the other end. Such a pulley makes our work easier by simply changing the direction of the force, i.e. a load is lifted up using a downward effort.

Find the number of CO2 molecules present in 20l of CO2 at 0°C and 772mm of Hg.
I wiLL mark you as brainliest and give 50 points.​

Answers

Answer:

18

At STP, 22.4 liters of a gas forms one mole that is 6.023×10

23

molecules.

Volume of CO

2

in 1 litre of air =

100

0.03

×1 L

∴ No. of molecules of CO

2

=

22.4

6.023×10

23

×

100

0.03

=8.066×10

18

Explanation:

I guess it's this

R=8.314J/molKP=772mmHgT=0°C=273KV=20L

[tex]\\ \sf\longmapsto PV=nRT[/tex]

[tex]\\ \sf\longmapsto n=\dfrac{PV}{RT}[/tex]

[tex]\\ \sf\longmapsto n=\dfrac{772(20)}{8.314(273)}[/tex]

[tex]\\ \sf\longmapsto n=\dfrac{15440}{2269.722}[/tex]

[tex]\\ \sf\longmapsto n=6.8mol[/tex]

What is the oxidation half-reaction for 2Mg + O2 + 2Mgo?
A. O2 + 4e + 202-
B. 202- → 02 + 4e
C. Mg2+ + 2e → Mg
O D. Mg → Mg2+ + 2e

Answers

Answer:

OPTION C is correct

When magnesium burns, it combines with oxygen (O2) from the air to form magnesium oxide (MgO) according to the following equation: 2Mg(s) + O2(g) → 2MgO(s) Magnesium oxide is an ionic compound containing Mg2+ and O2− ions whereas Mg(s) and O2(g) are elements with no charges.

Two chemicals, Z and X react completely to form a product, Y. If 8.7 grams of x react to produce 19.5 grams of Y, how many grams of Z must have reacted to form this much product?

Answers

Answer:

Z= 10.8

Explanation:

The simple formula Z + X = Y can solve this problem. Since we are given that,

X= 8.7 GramsY= 19.5 Grams

Then we can just substitute the actually values for the letters.

Z + 8.7 = 19.5

From here, we can just do simple math to find the answer.

Z + 8.7 - 8.7 = 19.5 - 8.7

Z = 10.8

So, 10.8 grams of Z reacted to form the product.

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