can u help me with this i confused with this

Because White sugar settles at the bottom of iodized salt. White sugar completely mixed with iodized salt.

Answer:

Rabeprazole belongs to a class of drugs known as proton pump inhibitors (PPIs).

The salt whose aqueous solubility will most likely to change the pH of the solution is CaF2(aq).

The pH of a salt solution depends on the nature of the acid and base that forms the salt.

Since HF is a weak acid, its salt CaF2 will be slightly basic when dissolved in water hence the pH of the solution is altered.

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they are caused by winds and changes in seawater density.

The history of the atom passed through a certain sequence until our recent interpretation of atomic theory.

The correct sequence of atomic theory is;

The beginning of the atomic theory saw the discovery of J.J Thompson which led to the plum - pudding model in which the atom was described as a sphere in which electrons are stuck in an overall  positive atom.

This was followed by Rutherford's planetary model in which he concluded that the atom has a small dense positive  nucleus. This was followed by the model of Bohr in which the electrons exist in perfect orbits based on  energy levels.

Lastly, the contemporary model of the atom is called the wave - mechanical model in which electrons exist in orbitals, or the most  probable location.

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Answer:

fossils of plants and animals

distinctive rock layers and mountain ranges

Glacial scratches on rocks

Explanation: I took the quiz lol

Answer:

1.8 mol

Explanation:

concentration (M) = no. of moles (mol) ÷ volume (dm³)

no. of moles = concentration ×  volume

                     = 6 × 300 / 1000

                      =  1.8 mol

The best way to determine the concentration of AgNO3 dissolved in solution is by precipitation using a chloride.

Precipitation is one of the oldest and handy methods of chemical analysis. It involves the addition of a reagent which is known to form a precipitate with the test solution.

The precipitate is now recovered from solution, dried and weighed. Stoichiometric calculations show the amount of the test substance dissolved in the test solution.

In this case, NaCl can be used to carry out a precipitation as follows;

AgNO3(aq) + NaCl(aq) -------> AgCl(s) + NaNO3(aq)

The AgCl precipitate is recovered dried and weighed and then the amount of AgNO3 in the dissolved solution is determined.

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Answer:

I think it's A

Explanation:

Carbon dioxide is added to the atmosphere whenever people burn fossil fuels. ... As the amount of carbon dioxide in the atmosphere rises, the oceans absorb a lot of it. In the ocean, carbon dioxide reacts with seawater to form carbonic acid. This causes the acidity of seawater to increase.

Answer:

The number of energy levels will increase.

Explanation:

As they are all Noble Gases, they are all in the same family. However, as you go further down the list of Noble Gases, the period number increases. The period number shows the number of energy levels. Hence, an increase in energy levels.

The size of the atoms (atomic radius) would increase down the group from neon to argon to krypton.

Atomic radius can be defined as a measure of the size (distance) of the atom of a chemical element, typically from the nucleus to its valence electrons.

Generally, the atomic radius of a chemical element decreases across the periodic table, from alkali metals (group 1 elements) to noble gases (group 8 elements). Also, the atomic radius of a chemical element increases down each group of the periodic table, typically from top to bottom (column).

In this context, the size of the atoms (atomic radius) would increase down the group from neon to argon to krypton.

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Answer:

C

Explanation:

[tex]\\ \sf\longmapsto Acceleration=\dfrac{v-u}{t}[/tex]

[tex]\\ \sf\longmapsto Acceleration=\dfrac{6-20}{6}[/tex]

[tex]\\ \sf\longmapsto Acceleration=\dfrac{-14}{6}[/tex]

[tex]\\ \sf\longmapsto Acceleration=-2.3m/s^2[/tex]

Answer:

2NaOH(aq) + CaBr2(s) → Ca(OH)2(s) + 2NaBr(aq)

The given chemical equation depicts chemical reaction of double displacement type and it's balanced chemical equation is  2 NaOH + CaBr₂ [tex]\rightarrow[/tex] Ca(OH)₂ +  2 NaBr.

Chemical equation is a symbolic representation of a chemical reaction which is written in the form of symbols and chemical formulas.The reactants are present on the left hand side while the products are present on the right hand side.

A plus sign is present between reactants and products if they are more than one in any case and an arrow is present pointing towards the product side which indicates the direction of the reaction .There are coefficients present next to the chemical symbols and formulas .

The first chemical equation was put forth by Jean Beguin in 1615.By making use of chemical equations the direction of reaction ,state of reactants and products can be stated. In the chemical equations even the temperature to be maintained and catalyst can be mentioned.

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Answer:

SUSPENSION IS A KIND OF MIXTURE where particlea are visible to the naked eyes AS IT settled AT THE BOTTOM WHEN LEFT UNDISTURBED.

Answer:

A. The metal and point

Explanation:

Elements that can conduct electric current are generally metals. However, the nonmetal carbon in the form of graphite is a good conductor of electricity.

Answer:

Because you could die or get seriously burn bad

Answer:

Radiation protection aims to reduce unnecessary radiation exposure with a goal to minimize the harmful effects of ionizing radiation. ... As radiation exposure becomes more prevalent, a thorough understanding of radiation exposure risks and dose reduction techniques will be of utmost importance.

Explanation:

Answer:

1. Option C

2. Option D

3. Option B

4. Option

5. Option

6. Option

7. Option

Answer:

Foam is not a state of matter, it is a mixture of two states: gas and (usually) liquid. There are also gas-solid foams.Explanation:

Answer:

Foam is not a state of matter, it is a mixture of two states: gas and (usually) liquid.

Explanation:

Answer:

nBACO3=m/M=9,83/197=0,05(mol)  ->nHCl=0,05.2/1=0,1(mol) =>VHCl=n/CM=0,1/0,44=0,227(lít)

Explanation:

Answer:

the reactor was overheating

Answer: See Explanation

Explanation:

Cytokinesis occurs in mitosis and meiosis for both plant and animal cells. The ultimate objective is to divide the parent cell into daughter cells.

In plants , this occurs when a cell wall forms in between the daughter cells.

In animals , this occurs when a cleavage furrow forms. This pinches the cell in half.

Answer:

C=37.5% H=4.2% O=58.3%

Explanation:

molar mass of element / molar weight of compound X 100% (for each element)

C mass = 12 x 6 = 72

H mass = 1 x 8 = 8

O mass =16x 7 = 112

Molar weight of compound = 192

72/192(100%)= 37.5% C

8/192(100%) = 4.2 % H

112/192 (100%) = 58.3% O

The mass percentage of carbon, hydrogen, H, and oxygen, O, in C₆H₈O₇ is C = 37.5% H = 4.2% O = 58.3%.

The concentration of an element in a compound or component in a combination is calculated by the mass percentage.

The collective of a component is divided by the entire mass of the mixture to obtain the mass percentage, which is then multiplied by 100%.

Given, finding the mass percentage of carbon, hydrogen, H, and oxygen, O, in C₆H₈O₇

the molar mass of element / molar weight of compound X 100% (for each element

First, calculate the molar mass of the elements given in the compound.

C mass = 12 x 6 = 72

H mass = 1 x 8 = 8

O mass =16x 7 = 112

Molar weight of compound = 192

72/192(100%)= 37.5% C

8/192(100%) = 4.2 % H

112/192 (100%) = 58.3% O

Thus, the mass percentage is C = 37.5% H = 4.2% O = 58.3%.

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Answer:

D

Explanation:

No company is allowed to discriminate.

Answer:

since the modern periodic table is made in ascending order by the atomic number fluorine has the most protons.

The highlighted element that has the greatest number of protons is Iron, Fe. Thus, the correct option for this question is B.

Protons may be defined as a type of subatomic particles which are generally present in the centermost part of an atom known as the nucleus along with neutrons. These subatomic particles are positively charged in nature. Ernest Rutherford was known to discover these particles.

According to the question, the number of protons is generally governed by an atomic number of a chemical element. For example, fluorine has an atomic number of 9. It has the same number of protons in its nucleus. The number of protons in Iron is 26, while the number of protons in Calcium is 20. And the number of protons in aluminum is 13.

Therefore, an iron is the highlighted element that has the greatest number of protons. Thus, the correct option for this question is B.

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Answer:

O are in 535 g of N2O

Explanation:

Answer:

Imagine you have 5 marbles in your hand and 5 marbles spread in front of you on the floor. Each group has the same mass, but one is contained in a smaller space. The marbles in your hand would be denser because there is more "stuff" in a smaller space.

Explanation: