0. 008 moles of C3H7OH contains how many atoms of carbon?

Ions can be made by single element or covalently bonded group of elements. The covalently bonded group of elements is called polyatomic ions or polyatomic atoms. Therefore,  the other ions that are not attracted to the electrodes form salt.

Any species that contain charge whether it is positive charge or negative charge is called ions. The example of polyatomic ions are sulfate, phosphate, nitrate etc.

Cation is the species that loose electron and attain positive charge while anion is a species which gain electron and attains negative charge so when anion and cation combine in fixed ration the the overall charge of the molecule is zero that is molecule is neutral, the charge over cation and anion is also called oxidation state.

Positive ions are attracted towards negative electrode and negative ions are attracted toward positive electrodes. the ions which are not attracted to either of the electrode, these form salt with the other ion remaining in the electrolyte.

Therefore,  the other ions that are not attracted to the electrodes form salt.

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Answer:

0.0111 M

Explanation:

pH = 4.5

[H3O+] = ?

Relationship between both quantitiesis given by:

pH = -log₁₀ [H3O+]

-pH = log₁₀ [H3O+]

-4.5 =  log₁₀ [H3O+]

[H3O+]  = e ^ (-4.5)

[H3O+] = 0.0111 M

Answer:Difference between Ceres and Pluto

Nestled in the asteroid belt between Mars and Jupiter, Ceres is a tiny loner, while Pluto — in the Kuiper Belt at the edge of the solar system — is nearly three times as big and hosts a handful of moons. A mixture of rock and water ice dominates Ceres' landscape, while methane and nitrogen ices cover Pluto

Explanation:

Answer: 62.4g according to a quizlet

Explanation:

Answer: 1.80 moles of \(H_2\) will be produced 1.20 moles of aluminium.

Explanation:

To calculate the moles :

\(\text{Moles of solute}=\frac{\text{given mass}}{\text{Molar Mass}}\)    

The balanced chemical reaction is:

\(6HCl(aq)+2Al(s)\rightarrow 3H_2(g)+2AlCl_3(aq)\)  

According to stoichiometry :

2 moles of \(Al\) produce = 3 moles of \(H_2\)

Thus 1.20 moles of \(Al\) will produce=\(\frac{3}{2}\times 1.20=1.80moles\)  of \(H_2\)

Thus 1.80 moles of \(H_2\) will be produced 1.20 moles of aluminium.

Answer:

or around fires

Explanation:

Tip:

Source:

Answer:

To draw popsicle you draw pop cycle

Explanation:

1. ₉¹⁹F

2. Mg(OH)₂

3. 2H₂ + O₂ ⇒ 2H₂O

1. Fluorine, atomic number : 9 , mass number = 19

Symbol : ₉¹⁹F

protons=electrons=atomic number = 9

neutrons = mass number - atomic mass

\(\tt n=19-9=10\)

Configuration : [He] 2s² 2p⁵

2. Magnesium hydroxide is an ionic compound and is a strong base consisting of 2 ions:

Positive ion: Magnesium: Mg²⁺

negative ion: Hydroxide: OH⁻

The charges of the two are crossed, so that the compound becomes:

Mg(OH)₂

3. Reaction :

H₂ + O₂ --------> H₂O

give coefficient :

aH₂ + bO₂ --------> H₂O

H, left = 2a, right 2⇒2a=2⇒a=1

O, left = 2b, right 1⇒2b=1⇒b=0.5

Reaction becomes :

H₂ + 0.5O₂ --------> H₂O x 2

2H₂ + O₂ --------> 2H₂O

The major elimination product when I-bromobutane is reacted with the bulky base, potassium t-butoxide, in t-butyl alcohol is cis-2-butene.

This is because when a base is added to a molecule with a double bond, the electrons in the double bond are shifted to the more substituted carbon, resulting in the formation of a new single bond and a new double bond. Since the bulky base, potassium t-butoxide, is larger than the hydrogen atom, it will be shifted to the more substituted carbon, forming a cis-2-butene. This is because the larger size of the base causes it to be more sterically hindered, thus making it more difficult for the electrons to move to the more substituted carbon. As a result of this reaction, the mass of the reactants and products remains constant, as per the law of conservation of mass.

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The total mass of the mixture is 80.5 g. The analysis of the calculation shows that there should be three significant figures in the end result.

This is an addition operation, and when dealing with addition and subtraction operations it is necessary to consider the last significant figure for each of the numbers. The result of the addition/subtraction should have the same last significant figure as the number with the leftmost (or highest) last significant figure. When applied to this calculation, the principle looks like this:

30.05 - the last significant figure is 5, and it is in the hundredths

50.0 - the last significant figure is 0, in the tenths

0.4006 - the last significant figure is 6, in the ten thousandths.

Of the three, the leftmost/highest significant figure is 0 in the tenths, so the end result should also have its last significant figure in the tenths.

30.05 g + 50.0 g + 0.4006 g = 80.4506 g, but we round up to the tenths, and because the numbers after 5 are greater than 0, we have to round up to reach the end result of 80.5 g

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Only light waves can be observed on Earth from an explosion in space. This is because space is a vacuum, which means there is no medium for sound waves to travel through, hence option A) is the correct answer.

Only light waves can be observed on Earth from an explosion in space. This is because space is a vacuum, which means there is no medium for sound waves to travel through. Sound waves require a medium such as air or water to travel, and since space is essentially empty, there is no medium for sound waves to propagate through. On the other hand, light waves do not require a medium to travel through and can travel through the vacuum of space. Therefore, any explosion in space would release electromagnetic radiation, which includes various wavelengths of light. These light waves could be observed on Earth if they are within the range of the electromagnetic spectrum that can be detected by our telescopes and instruments. In summary, sound waves cannot be observed from an explosion in space, but light waves can be observed on Earth if they are within the detectable range of the electromagnetic spectrum. Therefore option A) is correct.

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Answer:

One atom

Explanation:

Answer:

Magnesium dichloride

Explanation:

Answer:

Niels Bohr

Explanation:

Answer:

The oxidation state of chromium is +6

Explanation:

Let the oxidation number be x

Since The sum of all oxidation numbers are equal to zero,

So,

(+1)2 + 2x + (-2)7 = 0

+2 +2x -14 = 0

2x-12 = 0

2x = +12

Dividing 2 to both sides

x = +6

Answer:

4- radioactive isotopes

Explanation:

I don't remember exactly but this question was on the regents

Uranium-238  is a non- fissile element. It is a radioactive isotope that can be best used to determine geological formations. Thus, option 4 is correct.

Radioactive isotopes are elements that have an unstable atomic nucleus and can undergo radioactive decay to produce new particles and energy. They have the same atomic number as that of their parent species.

Isobars are a substance that has atomic mass and do not include uranium. Nuclear fusion and fission are the processes of nuclear energy that combine or splits the unstable nucleus to form a new particle.

Therefore, option 4. Uranium-238 is a radioactive isotope.

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The order of the  components involved in electron transport from those with the lowest redox potential to the highest Electron Transport Components are : NADH/NAD⁺ , NADH dehydrogenase complex ,  Cytochrome c reductase, cytochrome c oxidase, H₂O/O₂.

The  intermediate that is cytochromes and the other carriers having their intermediate of the redox potentials are arranged in the series which is the electron transport from the NADH  or the FADH to the O₂. The electron transport starts from the carriers that have the low redox potential to the one  having the high redox potential.

The electron transport of down the energy gradient through which the electron transport system that leads to the formation of the ATP from the ADP and the inorganic phosphate. This production of the  ATP is called as the oxidative phosphorylation.

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Answer:

3.79 ×10²³ atoms

Explanation:

Given data:

Mass of Se = 49.6 g

Number of atoms = ?

Solution:

Formula:

Number of moles = mass/ molar mass

Molar mass of selenium is 78.96 g/mol.

by putting values,

Number of  moles = 49.6 g/ 78.96 g/mol.

Number of moles = 0.63 mol

Number of atoms:

Now we will apply Avogadro number.

1 mole contain 6.022×10²³ atoms

0.63 mol ×  6.022×10²³ atoms / 1 mol

3.79 ×10²³ atoms

Answer:

Explanation:

Decomposition reaction, also known as analysis or dissociation, is a type of chemical reaction in which a compound breaks down into simpler substances or elements. In this reaction, a single reactant undergoes a chemical change and produces two or more products.

The decomposition reaction can be represented by the general equation:

AB → A + B

Where AB is the reactant, and A and B are the products. The reactant AB is usually a compound, and it breaks down into its constituent elements or simpler compounds.

There are different types of decomposition reactions, including:

Thermal decomposition: It occurs when a compound is heated, resulting in its decomposition into simpler substances. For example, the thermal decomposition of calcium carbonate (CaCO3) produces calcium oxide (CaO) and carbon dioxide (CO2):

CaCO3 → CaO + CO2

Electrolytic decomposition: It takes place when an electric current is passed through an electrolyte, causing it to break down into its component ions. For instance, the electrolysis of water (H2O) leads to the decomposition into hydrogen gas (H2) and oxygen gas (O2):

2H2O → 2H2 + O2

Photochemical decomposition: It occurs when a compound undergoes decomposition due to exposure to light energy. Chlorine gas (Cl2) can decompose into chlorine atoms (Cl) under the influence of light:

Cl2 → 2Cl

These are just a few examples of decomposition reactions. They are important in various chemical processes and are used in industries, laboratory experiments, and natural phenomena. By understanding and controlling decomposition reactions, scientists can gain insights into the behavior of different compounds and develop practical applications in fields such as chemistry, materials science, and environmental science.

Answer:

Explanation:

reaction in which a compound breaks down into simpler substances or elements

The atomic radius of a silicon atom is larger than that of a carbon atom because of an increase in the number of energy shells, also known as principal quantum shells.

The explanation for this is as follows:The atomic radii are the distances from the nucleus to the outermost electron shell's edge. When you proceed down a group of the periodic table, the atomic radius grows because the distance between the outermost electron shell and the nucleus grows because the number of filled inner shells increases.

The electrons in the outer shell are held less tightly by the nucleus as the radius gets larger, as they are further away. Electrons are held more tightly by the nucleus as the atomic radius shrinks because the protons in the nucleus are closer to the electrons in the outer shell, exerting a greater electrostatic attraction on them.

Therefore, compared to the atomic radius of a carbon atom, the atomic radius of a silicon atom is larger because of an increase in the number of energy shells, also known as principal quantum shells.

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The defendant was charged with setting fire to an abandoned building is third degree type of Arson.

What is Arson?

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Answer:

Granite

Explanation:

Answer:

Granite

Explanation:

Igneous forms when rock is cooled and hardens by Magma.

And the option granite, which forms as magma cools deep underground

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17.85 mL of 3.0 M stock solution of nitric acid is needed to make a 150 mL 0.357 M nitric acid.

The dilution of a stock solution can be solved by using the formula below, which indicates that the concentration of the solution changes but the number of moles of the solute remains the same.

(concentration of stock solution)(volume of stock solution) = (concentration of diluted solution)(volume of diluted solution)

Given:

(3.0 M)(volume of stock solution)=(0.357 M)(150 mL)

volume of stock solution = [(0.357 M)(150 mL)] / (3.0 M)

volume of stock solution = 17.85 mL

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Answer:

The molecules have less movement.

Explanation:

When water heats up and transforms into water vapour (gaseous state), the molecules move much faster and farther apart. When the water gets colder, the molecules get closer together and move less and slower.

Answer:

the molarity of cobalt(II) fluoride in the resulting solution is = 0.137  M

Explanation:

Given that :

a student dissolves 6.64 g of CoF₂  into 500 mL of water

volume of the solution(water) = 500 mL = 0.50 L

The standard  molar mass of CoF₂ is 96.93 g/mol

number of moles of CoF₂ = mass of CoF₂/molar mass of CoF₂

number of moles of CoF₂ = 6.64 g/96.93 g/mol

number of moles of CoF₂ = 0.0685 mol

The molarity of any given substance is known to be as the number of moles of solute dissolved in one litre of solution.

Thus ;

Molarity of  cobalt(II) fluoride CoF₂ in the resulting solution is = number of moles / Volume in (L)

Molarity of  cobalt(II) fluoride CoF₂  = 0.0685 mol/ 0.50 L

= 0.137  M

Thus ; the molarity of cobalt(II) fluoride in the resulting solution is = 0.137  M

74.5 grams of lead (II) nitrate were reacted to produce 62.6 grams of lead (II) chloride.

To determine the mass of lead (II) nitrate that was reacted when 62.6 grams of lead (II) chloride is produced, we need to use the stoichiometry of the balanced chemical equation and calculate the molar masses of the compounds involved.

The balanced chemical equation for the reaction is:

2Pb(NO3)2 + 2NaCl → 2PbCl2 + 2NaNO3

From the equation, we can see that 2 moles of Pb(NO3)2 react to produce 2 moles of PbCl2. Therefore, the molar ratio of Pb(NO3)2 to PbCl2 is 1:1.

First, let's calculate the molar mass of PbCl2 and Pb(NO3)2:

Molar mass of PbCl2 = Atomic mass of Pb + 2 × Atomic mass of Cl

= 207.2 g/mol + 2 × 35.45 g/mol

= 278.1 g/mol

Molar mass of Pb(NO3)2 = Atomic mass of Pb + 2 × (Atomic mass of N + 3 × Atomic mass of O)

= 207.2 g/mol + 2 × (14.01 g/mol + 3 × 16.00 g/mol)

= 331.2 g/mol

Next, we can calculate the moles of PbCl2 produced:

Moles of PbCl2 = Mass of PbCl2 / Molar mass of PbCl2

= 62.6 g / 278.1 g/mol

≈ 0.225 mol

Since the molar ratio of Pb(NO3)2 to PbCl2 is 1:1, the moles of Pb(NO3)2 reacted will also be 0.225 mol.

Finally, to find the mass of Pb(NO3)2 that was reacted, we can use the moles and molar mass:

Mass of Pb(NO3)2 = Moles of Pb(NO3)2 × Molar mass of Pb(NO3)2

= 0.225 mol × 331.2 g/mol

≈ 74.5 g

Therefore, approximately 74.5 grams of lead (II) nitrate were reacted to produce 62.6 grams of lead (II) chloride.

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Answer:

(CH3COO)2 + redP + Cl2 → ClCH2COOH + HCl

Explanation:

This is an example of halogenation of carboxylic acids at alpha carbon atom. In this reaction, red phosphorus and chlorine are treated with carboxylic acids having alpha hydrogen atom followed by hydrolysis to form alpha chloro carboxylic acid.

Answer:

hydrogen

Explanation:

its the only one that doesn't say incorrect answer

The following is an example of a subatomic particle is hydrogen. Hence option D is correct.

Subatomic particle is defined as any of the different self-contained particles of matter or energy that make up the building blocks of all matter. Protons, neutrons, and electrons are the three subatomic particles that make up a normal atom. The neutron is the subatomic particle with the most mass.

The chemical element hydrogen is represented by the letter H and atomic number 1. Three subatomic particles make up a hydrogen atom. They include the heavier constituents of the small but extremely dense atom's nucleus, the positively charged protons and the electrically neutral neutrons, as well as the electrons, the negatively charged, nearly massless particles that still make up the majority of the atom's size.

Thus, the following is an example of a subatomic particle is hydrogen. Hence option D is correct.

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Answer:

The cytoplasm

Explanation:

Cytoplasm is the gelatinous liquid that fills the inside of a cell. It is composed of water, salts, and various organic molecules. Some intracellular organelles, such the nucleus and mitochondria, are enclosed by membranes that separate them from the cytoplasm.

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