What is the ph of a 0.0000001 molar HCL?

What is the ph of a 0.0450 molar of Ba(OH)2?

Note: Focus on how these compounds dissociate with H20

Answer:  I just try this  

✥ So, in 1.25 moles of NO2, you would have 1.25 moles of N and (2 x 1.25) 2.50 moles of O.

0.1 mole = Avogadro's number of particles (approx. 6.022x10^23 particles/mol)

So, #oxygen atoms = 2.50 mol x 6.022x10^23 atoms/mol

6.022x10^23 atoms/molOr, approximately 1.51x10^24 oxygen atoms.

Hope this answer helps you ✨

The amount of the 240 g sample of the radioisotope that will remain after 525 billion years is 7.5 g

n = t / t½

n = 525 / 105

n = 5

N = N₀ / 2ⁿ

N = 240 / 2⁵

N = 240 / 32

N = 7.5 g

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Answer:

7.5

Explanation:

edge

The volume of one nanocontainer is the amount of space it can hold. To find the volume, you need to know the dimensions of the nanocontainer.

If the nanocontainer is a regular shape, such as a cube or a cylinder, you can use the appropriate formula to calculate the volume. For example, the volume of a cube is found by multiplying the length, width, and height of the cube. If the nanocontainer is an irregular shape, you can use water displacement to find the volume. Here's how it works:
1. Fill a graduated cylinder with a known volume of water.
2. Carefully place the nanocontainer into the cylinder, making sure it is fully submerged.
3. Measure the new volume of the water in the graduated cylinder.
4. The difference between the initial and final volume is the volume of the nanocontainer.
Remember to record your measurements accurately to get an accurate volume.

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Answer:

Atoms often get electrons or lose. The atom lacks or earns a "negative" load. Then these electrons are known as ions. Positive ion - If the molecule lacks an electron, it gets more protons than ions.

Explanation:

The pressure is 36.9 kPa

The pOH is 10.78

The two stock solutions needed are pH = 10.00 and pH = 14.00

Using;

PV = nRT

where:

P = pressure of the gas (in Pa or atm)

V = volume of the gas (in m³ or L)

n = number of moles of the gas

R = gas constant

T = temperature of the gas (in K)

\(P = nRT/V\\P = 0.15 * 8.31 * 264/8.9\\P = 36.9 kPa\)

\(pOH= -log[OH^-]\\= -log(1.66 * 10^-11)\\= 10.78\)

The ideal gas equation describes the relationship between pressure, volume, temperature, and the number of moles of a gas in a closed system.

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Answer:

Well, you'd have 1 electron more than protons (since there are 10 protons and 11 electrons). So the previously neutral ion has now become an ion with a -1 charge

The units of k in the given rate law are 1/M^3s, which corresponds to option e.

By examining the units of the rate equation, it is possible to establish the units of the rate constant (k). The units of the rate constant can be found by canceling out the units of concentration raised to the proper power because the rate is represented in terms of concentrations.

In this instance, both the rate and the concentration of the reactants x and y are expressed in units of M. The units of the rate constant (k) should be as follows in order to cancel out the units of concentration increased to the power of four:

k = (M/s) / (M^2)^2 = M^-3s^-1

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Answer:

Matter can be classified according to

physical and chemical properties. Matter is anything that occupies space and has mass. The three states of matter are solid, liquid, and gas. ... Pure substances can be either chemical compounds or elements.

Answer:

40.002

Explanation:

The percent composition of carbon in acetic acid is 40.002%

The mass percentage of the carbon in the compound C₂H₄O₂ is 40.00 %.

The percentage of any element in a given compound is the number of parts by mass of that element present in 100 parts by mass of the given compound.

The mass percentage of an element can be calculated in two steps:

First, calculate the molecular mass of the compound by the addition of the atomic masses of the elements. Then, the percentage of the elements by dividing the total mass of the element present in the compound by the molar mass of the compound multiplied by 100.

Given, the molecular formula of the given compound is C₂H₄O₂. The atomic mass of carbon, hydrogen, and oxygen is 12.011 g, 1.0079 g, and 15.999g respectively.

The molecular mass of the compound =  2(12.011) + 4(1.0079) + 2(15.999)

                                                                = 60.052 g

The mass percentage of the carbon = (24.022/60.052) × 100 = 40.001%

Therefore, the mass percentage of the carbon is equal to 40.00%.

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Answer:

precipitation goes to the left box

condensation goes to the bottom box

evaporation goes in the top right box

Explanation:

hope this is helpfull

can you relate to these pictures

1. The number of mole of Fe₂(SO₄)₃ is 0.025 mole

2. The number of mole of Fe₂O₃ formed is 0.025

3. The mass of iron (iii) oxide formed is 4 grams

4. The number of mole of SO₃ produced is 0.075 mole

5. The volume of sulphur trioxide at rtp is 1.8 dm³

The number of mole of Fe₂(SO₄)₃ can be obtained as follow:

Mole = mass / molar mass

Mole of Fe₂(SO₄)₃ = 10 / 400

Mole of Fe₂(SO₄)₃ = 0.025 mole

The number of mole of Fe₂O₃ formed can be obtained as follow:

Fe₂(SO₄)₃ -> Fe₂O₃ + 3SO₃

From the balanced equation above,

1 mole of Fe₂(SO₄)₃ reacted to produced 1 mole of Fe₂O₃

Therefore,

0.025 mole of Fe₂(SO₄)₃ will also react to produce 0.025 mole of Fe₂O₃

Thus, the number of mole of Fe₂O₃ formed is 0.025 mole

The mass of iron (iii) oxide, Fe₂O₃ formed can be obtained as follow:

Mass = Mole × molar mass

Mass of iron (iii) oxide, Fe₂O₃ = 0.025 × 160

Mass of iron (iii) oxide, Fe₂O₃ = 4 grams

The number of mole of SO₃ produced can be obatined as follow:

Fe₂(SO₄)₃ -> Fe₂O₃ + 3SO₃

From the balanced equation above,

1 mole of Fe₂(SO₄)₃ reacted to produced 3 moles of SO₃

Therefore,

0.025 mole of Fe₂(SO₄)₃ will react to produce = 0.025 × 3 = 0.075 mole of SO₃

Thus, the mole of SO₃ produced is 0.075 mole

The volume of sulphur trioxide, SO₃ at rtp can be obtained as follow:

Volume of sulphur trioxide, SO₃ = mole × molar volume at rtp

Volume of sulphur trioxide, SO₃ = 0.075 × 24

Volume of sulphur trioxide, SO₃ = 1.8 dm³

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The molarity of the phosphorous acid solution is approximately 0.00760 M.To determine the molarity of the phosphorous acid solution, we need to use the balanced chemical equation and the stoichiometry of the reaction between ammonia and phosphorous acid.

The balanced chemical equation for the reaction between ammonia (NH3) and phosphorous acid (H3PO3) is:

3NH3 + H3PO3 -> (NH4)3PO3

From the equation, we can see that the ratio of ammonia to phosphorous acid is 3:1.

Given that 11.91 ml of 0.162 M ammonia solution reacts, we can calculate the number of moles of ammonia used:

Moles of ammonia = volume (in L) x molarity

Moles of ammonia = 0.01191 L x 0.162 mol/L = 0.001930 mol

Since the ratio of ammonia to phosphorous acid is 3:1, we know that the number of moles of phosphorous acid used is one-third of the moles of ammonia:

Moles of phosphorous acid = 1/3 x moles of ammonia

Moles of phosphorous acid = 1/3 x 0.001930 mol = 0.000643 mol

Next, we calculate the molarity of the phosphorous acid solution:

Molarity = moles of solute / volume of solution (in L)

Molarity = 0.000643 mol / 0.08459 L = 0.00760 M

Therefore, the molarity of the phosphorous acid solution is approximately 0.00760 M.

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Answer:

13.6 m/v

Explanation:

d=m/v

d=680/50

d=13.6

3906.114 grams of CaCO₃ is required to completely react with 1250 grams of SO₂.

Scrubbing mechanism is a method of removing pollutants, such as sulfur dioxide (SO₂), from industrial exhaust gases. In this mechanism, a substance, such as limestone or lime, is added to the exhaust gases, which react with the pollutants to form solid waste products that can be easily removed.

The balanced chemical equation for the reaction of SO₂ gas and CaCO₃ is:

SO₂ + CaCO₃ → CaSO₃ + CO₂

From the equation, we can see that one mole of SO₂ reacts with one mole of CaCO₃. Therefore, we need to first determine the number of moles of SO₂ in 1250 g of SO₂:

molar mass of SO₂ = 32.066 g/mol

moles of SO₂ = mass of SO₂ / molar mass of SO₂

moles of SO₂ = 1250 g / 32.066 g/mol

moles of SO₂ = 39.012 mol

Since one mole of SO₂ reacts with one mole of CaCO₃, we need 39.012 moles of CaCO₃ to react with the 39.012 moles of SO₂. The molar mass of CaCO₃ is 100.086 g/mol, so we can calculate the mass of CaCO₃ needed as:

mass of CaCO₃ = moles of CaCO3₃ × molar mass of CaCO₃

mass of CaCO₃ = 39.012 mol × 100.086 g/mol

mass of CaCO₃ = 3906.114 g

Therefore, we need 3906.114 grams of CaCO₃ to completely react with 1250 grams of SO₂.

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Mass that would your backpack hold if you filled bag  with the gold is measured as 694800g

The density of a material is measured by how tightly it is packed together. The mass per unit volume is how it is measured.

                      Density=mass/volume

density of gold=19.3 g/(cm³)

Volume of backpack=30cm ×30cm ×40cm

                               =36000(cm³)

Mass of backpack= (density of pure gold) × (volume of backpack)

Mass of backpack=19.3 × 36000

                                =694800g

Because it enables us to determine which materials will float in a liquid and which will sink, density is an important concept. Substances typically float as long as their density is less than that of the liquid in which they are placed.

Thickness is one of the central logical standards of life. It can portray any ordinary article. Despite its significance, students frequently have difficulty comprehending what it is. The amount of space or volume packed into an object or substance is measured by its density.

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Answer:  A. \(0.00301J/g^0C\)

Explanation:

The quantity of heat required to raise the temperature of a substance by one degree Celsius is called the specific heat capacity.

\(Q=m\times c\times \Delta T\)

Q = Heat absorbed  = 4.56 J

m = mass of substance = 123 g

c = specific heat capacity = ?

Change in temperature ,\(\Delta T=T_f-T_i=12.32^0C\)

Putting in the values, we get:

\(4.56J=123g\times c\times 12.32^0C\)

\(c=0.00301J/g^0C\)

The specific heat of a 123 g substance that requires 4.56 J of heat in  order to increase its temperature by 12.32 °C is \(0.00301J/g^0C\)

The number of moles of Ag that forms from 5.0 moles of Zn is 10 moles.

The number of moles of a substance can be calculated stoichiometrically as follows;

Stoichiometry is the study and calculation of quantitative (measurable) relationships of the reactants and products in chemical reactions (chemical equations).

According to this question, silver nitrate reacts with zinc to produce silver and zinc nitrate as follows:

2AgNO₃ + Zn → 2Ag + Zn(NO₃)₂

Based on the equation above, 1 mole of Zn produces 2 moles of silver.

Hence, 5 moles of Zn will produce 10 moles of Ag.

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Answer: Stays the same

Explanation:

The amount of water on the earth never leaves or runs out, so there will always be water. When water disappears, its just the process of evaporation. When water is evaporated into water vapor (gas state of matter), and the molecules are scattered through the air. Making the air humid, although you can not see the molecules, not even with a microscope.

Option C, burning coal, is the primary cause of particle pollution exposure in children.

Developmental delays, cardiovascular problems, cognitive decline, and respiratory and cardiovascular disorders can all result from particulate pollution exposure. In addition to coal, industrial activities, wildfires, and vehicle emissions are additional sources of particle pollution. Children are very prone to the harmful effects of the particle air pollution like burning coal as we know that they have developing lungs that breathes more air. We have to prevent the children from getting exposed to the particulate pollution.

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B. intermolecular attractions.

Answer:

gas and element and compound

Explanation:

because it's different and more power so the elements

Answer:

because you might have a too much bigger than explosion if you add more baking soda or vinegar

Explanation:

You use the same amount of baking soda and the same amount of liquid for each combination for the explosion.

We know that,

When you use the same amount of baking soda and the same amount of liquid for each combination then be get the explosion.

Baking soda and liquid are base and acid so they react chemically.

Here, the given liquid is vinegar

If you will increase the amount of baking soda and if you will increase the amount of liquid then no reaction

So, you use the same amount of baking soda and the same amount of liquid for each combination for the explosion.

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Answer:

A substance that tends to bring about oxidation by being reduced and gaining electrons

Explanation:

Answer:

An oxidizing agent is a substance that takes negatively charged electrons "away" from a substance or object; usually taking these electrons for itself it can also transport the electrons from an object and "give" them to another substance or object. The object that has been oxidized will then have a positive charge after losing the negative electrons and the substance receiving the electrons will become negative.

Explanation:

Examples include halogens, potassium nitrate, and nitric acid.

The heat energy needed to change the 20 gram sample of specific heat 0.450 J/ g °C from a temperature of 10 to 36 °C is 234 J.

Calorimetry is an analytical  technique used to determine the heat energy absorbed or released by  a system. The calorimetric equation relating the heat energy q with the mass of the substance m, specific heat c and temperature difference ΔT is given as:

q = m c ΔT.

Given that the mass of the sample of iron = 20 g

temperature difference   ΔT = 36 - 10 = 26 °C

specific heat c = 0.450 J/ g °C.

The heat energy absorbed by the sample is calculated as follows:

q = 20 g ×  0.450 J/ g °C × 26 °C

  = 234 J.

Therefore, the heat energy required to the raise the temperature of the sample of iron is 234 J.

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A trap is a geological feature that can catch and store oil and gas. In the area of petroleum geology, the phrase "trap" is frequently employed. Because a trap.

is often generated by a mix of anticline and fault structures, the correct response is "Anticline and fault." An anticline is a sort of fold in rock strata that generates a ridge-like structure as it arches higher. A syncline is the inverse, a downward-dipping fold that generates a trough-like shape. A fault is a crack in the earth's crust caused by the movement of two pieces of rock relative to each other. When an anticline meets a fault, it forms a trap by establishing a barrier that can capture and collect material. A trap is a geological feature that can catch and store oil and gas. In the area of petroleum geology, the phrase "trap" is frequently employed. Because a trap.

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Answer:

Easy portability,easy convertability, high calorific value for its unit mass.

Explanation:

Oil is so incredibly valuable as an energy source as it has easy portability, easy convertibility, high calorific value for its unit mass.

Any chemical compound that is nonpolar, predominantly hydrocarbon-based, hydrophobic, and lipophilic is considered to be an oil. Typically combustible and surface active, oils. Most oils are lipids which become liquid above room temperature and are unsaturated. Classes of chemical substances that may be unconnected in structure, characteristics, and usage are included in the general concept of oil.

They are employed in the production of numerous varieties of paints, plastic bottles, and various other products, as well as for usage as food (such as olive oil), fuel (such as heating oil), lubricant (such as motor oil), and medical uses. Some religious rituals and ceremonies employ specially formulated oils as cleansing elements. Oil is so incredibly valuable as an energy source as it has easy portability, easy convertibility, high calorific value for its unit mass.

Therefore, oil is so incredibly valuable as an energy source as it has easy portability, easy convertibility, high calorific value for its unit mass.

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Answer:

C2H3

Explanation:

The empirical formula is the simplest whole number ratio of atoms of each element in a compound while the molecular formula shows us the actual number of atoms of each element

Writing C8H12 in a ratio:

8 : 12

This can be simplified by dividing by a common factor present in both numbers

8 and 12 can be divided by 4

8 ÷ 4 = 2 and 12 ÷ 4 = 3, hence the ratio is:

2 : 3

This cannot be simplified any further

Thus, the empirical formula is C2H3

Answer:

23

This particular isotope of potassium-42 contains 42 nucleons (i.e., protons and neutrons, combined;) Like other isotopes of potassium 19 out of these nucleons are protons; the rest 42−19=23 are therefore neutrons.

Answer:

23 neutrons

Explanation: