CaCO3 + 2HCl --> CaCl2 + H2O + CO2How many moles of CaCl2 has been made when 1. 8 moles of HCl was used?Your answer should have 1 number after the decimal. Your unit should include the unit and chemical formula. Your answer should only have 1 number after the decimal

Significantly, pH 7 is the neutral pH, which is also the pH of pure water.Pure water has a pH of 6.14 at 100°C, which is considered "neutral" at this high temp on the pH scale.

The pH scale determines how acidic or basic water is.The range is 0 to 14, and 7 representing neutrality.Acidity is indicated by pH values below 7, whereas baseness is shown by pH values above 7.

The pH value of pure water is 7 at room temp (25 °C).The purity of water is 6.14 at a temperature of 100 degrees Celsius, which is lower than 7, but remains neutral just on pH scale.

to know more about hydroxide and hydrogen visit:

https://brainly.com/question/29327783

#SPJ1

Answer:

Sodium and chlorine combine to make salt

Explanation:

Answer:

vinegar and soda

Explanation:

:)

Answer:

you have to use the avogadro's constant of 6.023×10^23 to calculate the number of molecules of carbon dioxide.and you also have to use the molecular mass which is 44.

35.5/44×6.023×10^23

=4.85×10^23

I hope this helps and sorry if it's wrong

You will need four sulfur atoms to react with two atoms of gallium. This is because each sulfur atom will react with one gallium atom, forming a compound with the chemical formula Ga₂S₃.

Gallium is a chemical element with the symbol Ga and atomic number 31. It is a soft, silvery-white metal used primarily in electronics and semiconductors. It is also used in alloys and to make low-melting alloys, such as gallium-indium-tin and gallium-arsenide. Gallium has a relatively low melting point of 29.7646°C (85.5763°F) and is liquid near room temperature. It is also one of the few metals that expand upon freezing. Gallium is a metal of the boron group, and is one of the few metals that are not toxic. It is used in applications such as fluorescent light bulbs, high-temperature thermometers, and solar cells. Gallium is also used in the production of integrated circuits, semiconductors, and transistors.

To learn more about gallium atom
https://brainly.com/question/4036727
#SPJ1

Answer:

Beta decay is most common in elements with a high neutron to proton ratio. Gamma decay follows the form: In gamma emission, neither the atomic number or the mass number is changed. A high energy gamma ray is given off when the parent isotope falls into a lower energy state.

Explanation:

pls mark me as brainliest

Two stereochemistry (enantiomers) are possible since the N product contains one chiral carbon (noted with an Asterisk).

m = 2n, where n is the total number of chiral centers and m is the total number of potential isomers, is the precise relationship. The maximum number of stereoisomers for molecules with two chiral centers is therefore four. Enantiomers are those in which both stereoisomers have all of their chiral centers in the opposite R/S configuration. Two stereoisomers are classified as diastereomers if at least one, but not all, of their chiral centers is opposite. Search for carbons that are bonded to four different substituents if you want to find chiral carbons.

Learn more about stereochemistry here:

https://brainly.com/question/28658912

#SPJ4

3a. The mass concentration of H2O in the air when mole fraction of water in the air is 2 percent at P=1 atm at 15 ∘C is 13.5 g/m³.

3b. The mass concentration of oxygen atoms in this gas is 1909.85 μg/m³.

3a. Given: Mole fraction of water in the air = 2%

Pressure, P = 1 atm

Temperature, T = 15 ∘C

We can find the mass concentration of H2O using the formula:

mass concentration = (partial pressure of H2O) / (RT) x MW x 1000

Where, R = 0.0821 L atm mol-1 K-1

T = 15 + 273 = 288 KMW of H2O = 18 g/mol

The partial pressure of H2O can be calculated using Dalton's law of partial pressure:

P H2O = mole fraction of H2O x total pressure

= 0.02 x 1 atm

= 0.02 atm

Substitute the values into the mass concentration equation:

mass concentration = (0.02 atm) / (0.0821 L atm mol-1 K-1 × 288 K) × (18 g/mol) × 1000

= 13.5 g/m³

Therefore, the mass concentration of H2O in the air when mole fraction of water in the air is 2 percent at P=1 atm at 15 ∘C is 13.5 g/m³.

3b. Given:

Pressure, P = 1 atm

Temperature, T = 15 ∘C

We need to find the mass concentration of oxygen atoms in this gas. For this, we first need to find the mole fraction of oxygen. We can use the following formula:

mole fraction of oxygen = 1 - (mole fraction of water + mole fraction of other gases)

Mole fraction of water = 2/100 = 0.02

Mole fraction of other gases = 1 - mole fraction of water

= 1 - 0.02

= 0.98

At standard conditions, 1 mole of gas occupies 22.4 L.

But at given conditions (P=1 atm and T=15 ∘C),

the volume occupied by 1 mole of gas can be found using the following equation:

PV = nRTV = (nRT) / PM

where, V = volume of 1 mole of gas

n = number of moles of gas

R = universal gas constant = 0.0821 L atm mol-1 K-1

T = 15 + 273 = 288 K

Now, we can find the number of moles of oxygen atoms using the following formula:

number of moles of oxygen atoms = (mass concentration of other gases) / (MO of O2)

Where, MO of O2 = 32 g/mol

Now, we can calculate the mass concentration of oxygen atoms using the following formula:

mass concentration of oxygen atoms = (number of moles of oxygen atoms) × (MO of O2) × (1000 μg/mg) / (volume of 1 mole of gas)

Substitute the values into the above equations:

V = (1 × 0.0821 × 288) / 1

= 23.74 L/mol

Number of moles of oxygen atoms = (0.98) / (32 g/mol)

= 0.030625 mol

Mass concentration of oxygen atoms = (0.030625 mol) × (32 g/mol) × (1000 μg/mg) / (23.74 L/mol)

= 1909.85 μg/m³

Therefore, the mass concentration of oxygen atoms in this gas is 1909.85 μg/m³.

To know more about mole fraction visit:

https://brainly.com/question/30724931

#SPJ11

1. The coefficient (green) is 45

2. The exponent (yellow) is 9

To convert from giga grams (Gg) to grams (g), the following coversion scale can be use:

1 Gg = 10⁹ g

With the above convesion scale, we can convert 45 Gg to g as follow

1 Gg = 10⁹ g

Therefore,

45 Gg = 45×10⁹ g

Thus, 45 Gg is equivalent to 45×10⁹ g. Hence, we can conclude as follow:

Learn more about conversion:

https://brainly.com/question/21919505

Answer:

a

Explanation:

im thinking because the water is a room temperature there shouldnt be anm immence amount og heat energy for it to have a good amount of energy tho i could be wrong because its not moving it could have no energy.

Answer: please tell me i have this exact thing on a test rn i need the answer

Explanation:

Meiosis is important because it ensures that all organisms produced via sexual reproduction contain the correct number of chromosomes. Meiosis also produces genetic variation by way of the process of recombination. HOPE it helps

Respuesta:

2 m

Explicación:

Paso 1: Información provista

Paso 2: Calcular la concentración de la solución final

Queremos perparar una concentración diluida a partir de una concentrada. Podemos calcular la concentración de la solución diluida usando la regla de dilución.

C₁ × V₁ = C₂ × V₂

C₂ = C₁ × V₁ / V₂

C₂ = 4 m × 100 mL / 200 mL = 2 m

Answer:

Potential energy

Explanation:

Hanging objects have (gravitational) potential energy

Answer:

Explanation:

Every cell in the monkey's body (and ours) is constantly converting the stored solar energy in glucose into work and heat. The work is used to carry on cell processes like growing, reproducing, moving molecules around, and getting rid of waste. The heat is a byproduct of the fuel "burning" process.

Answer:

The answer is carbon and silicon

Answer:

I hope this will help its not much

Explanation:

Answer:

d. natural I think is the right answer

Explanation:

I think thats the right answer

Antibodies against nicotinic acetylcholine receptors (nAChR), present at neuromuscular junction (NMJ), can affect function of junction by interfering with normal signaling between nerve and muscle.

Antibodies against nicotinic acetylcholine receptors (nAChR), which are present at neuromuscular junction (NMJ), can affect the function of junction by interfering with normal signaling between nerve and muscle.

At NMJ, the nerve terminal releases acetylcholine (ACh), which binds to nAChR on muscle cell membrane, leading to depolarization of muscle cell and muscle contraction. If antibodies bind to nAChR, they can block or reduce the number of available receptors for ACh, leading to decrease or even complete loss of the normal muscle response to nerve stimulation.

This can result in muscle weakness, fatigue, and even paralysis, depending on the severity of antibody binding and amount of functional nAChR remaining at the NMJ.

To know more about neuromuscular junction, refer

https://brainly.com/question/17076742

#SPJ1

True, acid deposition is a bigger term used to describe acid rain.

Acid rain is rain or every other form of precipitation this is unusually acidic, which means that it has improved stages of hydrogen ions. maximum water, along with consuming water, has an impartial pH that exists between 6.5 and 8.5, however acid rain has a pH degree decrease than this and stages from four-five on common. The damage to humans from acid rain isn't always direct.

Acid rain is one of the consequences of air pollutants. Gases produced from the burning of fuels react with the oxygen in the air and water vapor, transforming into acids that fall onto the earth's floor as rain.

Learn more about Acid rain here:-https://brainly.com/question/6700006

#SPJ4

Answer:

True

Explanation:

Answer:b

Explanation:

Answer:

b

Explanation:

took test

If Ka of HXO3 is greater than Ka of HZO3 at 25°C, then it is most likely that:

a. X is more electronegative than Z

A higher Ka value indicates that HXO3 is a stronger acid than HZO3. In stronger acids, the bond between hydrogen and the electronegative element is more polar, allowing hydrogen to be more easily released as a proton (H+). Therefore, it is likely that X is more electronegative than Z, making HXO3 a stronger acid.

TO KNOW MORE ABOUT  Ka of HXO3 is greater than Ka of HZO3 CLICK THIS LINK -

brainly.com/question/30561703

#SPJ11

The mass number of an atom is equal to the number of protons plus the number of neutrons that it contains. In other words, the number of neutrons in any atom is its mass number minus its atomic number.

hope this helps, if not, your free to give me 1 star

Answer:

the answer is

(D) HI

Explanation:

The thermometer will read -10°C after about 2.43 minutes.

(a) After four more minutes, the thermometer will read -1°C.

This is because the temperature difference between the room and outdoors is (24 - (-11)) = 35°C.

The thermometer then rises 7°C in one minute, so the thermometer is heated at 7°C/minute, i.e. 35°C in five minutes.

So the temperature of the thermometer after 4 more minutes is 7°C + 7°C + 7°C + 7°C = 28°C, 28°C - 35°C = -7°C, -7°C - 3°C = -10°C.

Thus the reading on the thermometer will be -1°C after four more minutes.

(b) To find out when the thermometer will read -10°C, use the formula:

time = (temperature difference ÷ heating rate) + time to start

       = (-10°C - 7°C) ÷ 7°C/minute + 1 minute

       = -17°C ÷ 7°C/minute + 1 minute≈ -2.43 minutes

Thus, the thermometer will read -10°C after about 2.43 minutes.

Learn more about thermometer from the given link

https://brainly.com/question/2339046

#SPJ11  

Answer:

1. atom

2. different

3. compounds

4. joined

5. separated

--

1. NT

2. ST

3. AT

--

1. subatomic

2. negative

3. Protons

4. neutrons

5. Nucleus

6. Rutherford

7. positive

8. electrons

--

1. T

2. T

3. F

4. T

Explanation:

look at the answer

Understanding alpha decay and the formation of daughter nuclides like lead-210 is an important part of nuclear physics and has many practical applications in science and technology.

Polonium-214 is a radioactive nuclide that undergoes alpha decay. In alpha decay, an atomic nucleus emits an alpha particle, which consists of two protons and two neutrons. This results in the nucleus losing two protons and two neutrons, and therefore changing into a different element. The daughter nuclide that forms as a result of alpha decay has a different atomic number and mass number than the parent nuclide.

In the case of polonium-214, the daughter nuclide that forms is lead-210. Lead-210 is also a radioactive nuclide, but it undergoes beta decay, in which a neutron is converted into a proton and an electron. This results in the nucleus gaining one proton and losing one neutron, which changes the element again.

The decay of polonium-214 to lead-210 is a natural process that occurs over time. Polonium-214 has a half-life of about 164 microseconds, which means that it takes that amount of time for half of the atoms in a sample to decay. This makes it a useful tool in scientific research and medical applications, but it can also be dangerous due to its radioactive properties.

Overall, understanding alpha decay and the formation of daughter nuclides like lead-210 is an important part of nuclear physics and has many practical applications in science and technology.

To know more about Alpha decay visit:

https://brainly.com/question/13669621

#SPJ11

The reaction given below can be represented as follows:`

H2PO4– + H2O ⇋ H3O+ + HPO42–

`Base–conjugate acid pair:` H2PO4–` and `HPO42–`

A Brønsted-Lowry acid-base reaction involves the transfer of a proton from one substance to another.

In this reaction, H2PO4– acts as an acid, donating a proton to water.

This produces the conjugate base of H2PO4–, HPO42–, and the conjugate acid of water, H3O+.

A base-conjugate acid pair is defined as two substances that differ only in the presence or absence of a single proton.

In this reaction, the base H2PO4– loses a proton to form its conjugate acid, HPO42–.

Therefore, `H2PO4–` and `HPO42–` is the base–conjugate acid pair.

The term "base-conjugate acid pair" refers to two species with the following characteristics:

They are both conjugates.

They differ by one hydrogen ion.

The dissociation of an acid (HA) results in the formation of a conjugate base (A−) and a hydrogen ion (H+). HA is called an acid, while A− is called a conjugate base.

Learn more about conjugate acid at: https://brainly.com/question/12584785

#SPJ11

The rate of the reaction between nitric acid (HNO₃) and ammonia (NH₃) will be approximately 7.25 1/s.

In a first-order reaction, the rate of the reaction is directly proportional to the concentration of the reactant. The rate law expression for a first-order reaction is given by:

rate = k[A]

In this case, both nitric acid (HNO₃) and ammonia (NH₃) are first-order reactants. Let's assume the rate constant (k) is given as 14.5 1/M s, the concentration of nitric acid ([A]) is 0.050 M, and the concentration of ammonia ([B]) is 0.10 M.

To calculate the rate of the reaction, we can use the rate law expression:

rate = k[HNO₃] = k[NH₃]

Substituting the given values:

rate = 14.5 (1/M s) * 0.050 M = 0.725 1/s

Therefore, the rate of the reaction between nitric acid and ammonia will be approximately 0.725 1/s or 7.25 s⁻¹. This means that for every second, 0.725 moles of nitric acid and ammonia will react to form the products.

To learn more about rate constant, here

https://brainly.com/question/20305922

#SPJ4

Answer:

3,000,000,000

Explanation:

3 x (10⁹)=

3 x (1,000,000,000)

= 3,000,000,000

The optimum pH range for blood is approximately 7.35 to 7.45. Deviations from this range can have serious consequences on physiological processes. The body employs three mechanisms to control pH: buffers, respiratory regulation, and renal regulation. Blood plays a crucial role in maintaining pH homeostasis by utilizing these mechanisms.

The optimum pH range for blood is tightly regulated between 7.35 and 7.45. If the blood pH deviates from this range, it can disrupt normal physiological processes. For example, if the blood becomes too acidic (pH below 7.35), a condition called acidosis occurs.

Acidosis can lead to impaired enzyme function, decreased oxygen delivery to tissues, and disruption of the central nervous system. On the other hand, if the blood becomes too alkaline (pH above 7.45), a condition called alkalosis occurs. Alkalosis can result in muscle twitching, confusion, and even seizures.

To maintain the pH within the optimal range, the body employs three primary mechanisms: buffers, respiratory regulation, and renal regulation. Buffers are chemical substances that can accept or donate hydrogen ions to resist changes in pH. They can bind excess hydrogen ions when blood becomes acidic or release hydrogen ions when blood becomes alkaline.

The respiratory system regulates pH by adjusting the levels of carbon dioxide (\(CO_{2}\)) in the blood through changes in breathing rate and depth. By altering the amount of \(CO_{2}\), the body can regulate the concentration of carbonic acid (\(H_{2}\)\(CO_{3}\)) and thus control pH. The kidneys play a crucial role in long-term pH regulation by selectively reabsorbing or excreting bicarbonate ions (\(HCO_{3}\)-) and hydrogen ions (H+) in the urine.

Hence, the optimum pH range for blood is approximately 7.35 to 7.45. Deviations from this range can lead to acidosis or alkalosis, disrupting physiological processes. The body controls pH through buffers, respiratory regulation, and renal regulation. Buffers resist pH changes, the respiratory system regulates \(CO_{2}\) levels to control carbonic acid concentration, and the kidneys selectively reabsorb or excrete bicarbonate and hydrogen ions to maintain pH homeostasis.

Learn more about pH

https://brainly.com/question/12609985

#SPJ11