Which two of the following graphs could be used to work out the rate of reaction from the gradient?

- Mass of Product (y) vs Time (x)

- Equilibrium constant (y) vs Concentration of Product (x)

- Concentration of Product (y) vs Equilibrium constant (x)

- Concentration of Reactant (y) vs Time (x)

The Big Bang theory is the idea that the universe began as just a single point, which results in the growing of this world.

From the Big Bang theory which would you believe to be the closest explaining the creation of the universe?

The Big Bang theory is the best model of the astronomers to explain the creation of matter, in space and time 13.7 billion years ago. The best about this theory is about the explosion that started it all and how the universe growed from the size of an atom to encompass everything in existence today. This argues that the Universe began as almost a single point with a temperature and density of near infinity.

So we can conclude that: The Big Bang theory is the idea that the universe began as just a single point, which results in the growing of this world.

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Answer:

Different Number of neutrons.

The two processes that together constitute the M phase of the cell cycle are mitosis and cytokinesis.

Mitosis is the process by which the nucleus of a cell divides into two daughter nuclei.

It consists of several stages, including prophase, metaphase, anaphase, and telophase, where the duplicated chromosomes align, separate, and segregate into two daughter cells.

Cytokinesis, on the other hand, is the division of the cytoplasm that follows mitosis.

In cytokinesis, the cell membrane pinches inward in animal cells or a cell plate forms in plant cells, ultimately dividing the cytoplasm into two distinct daughter cells.

Both ensure the accurate distribution of genetic material and cellular components to daughter cells during cell division, enabling growth, tissue repair, and the production of new cells.

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The molarity is 0.112 M. if that is prepared by dissolving 2.24 grams of naoh in enough deionized water to make 500.0 ml of solution .

Molarity is mathematically defined as Molarity = Number of moles of solute Volume of solution in litre. As the number of moles  solute is measured in mol and the volume of solution will be in litre . So, the unit of molarity is mol L - 1 .

Molarity  also known as molar concentration and is represented by “M”. For example,  solution of 1M of sodium chloride dissolved in water has a molarity of 1M. A number of moles of solute can be calculated by dividing mass by the molecular weight of the solute.

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1 mol of H2 gas were produced in the reaction

Zn + 2HCl --> ZnCl2 + H2

This is a single displacement reaction

What is a single displacement reaction?

It is a kind of oxidation-reduction chemical reaction when an ion or element moves out of a compound, i.e., one element is replaced by the other in a compound.

What is mole ratio?

It is the ratio between amounts in moles of any two compounds involved in a balanced chemical reaction.

As we can see mole ratio from the coefficient of balanced reaction:

2 moles of HCl produces 1 mole of H2 gas

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Answer:

B) the rabies viru

Explanation:

In quantum mechanics, the angular momentum quantum number "l" defines the shape of the atomic orbital. The l value is an integer ranging from 0 to (n-1) where n is the principal quantum number.

Therefore, for an electron in the L(n=2) shell of an atom, the possible values of the angular momentum quantum number l would range from 0 to 1, since n=2.

This is because the L shell is the second shell, which has n=2. Therefore, it can have subshells with l=0 and l=1, also known as the s and p subshells respectively.

The angular momentum quantum number also has an effect on the energy of the electron, with higher l values having higher energy.

Thus, the possible values of the angular momentum quantum number l for an electron in the L(n=2) shell of an atom are l=0 and l=1.

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A white precipitate of silver hydroxide (AgOH) will form in the reaction between silver(i) fluoride (AgF) and barium hydroxide (Ba(OH)₂).

In this reaction, the barium hydroxide will react with the fluoride ions from the silver(i) fluoride to form barium fluoride (BaF₂) and water (H₂O). At the same time, the silver ions from the AgF will react with the hydroxide ions from the Ba(OH)₂ to form silver hydroxide (AgOH) and more water.

The silver hydroxide is insoluble in water, which means it will form a solid precipitate. The overall chemical equation for this reaction is: AgF + Ba(OH)₂ → AgOH + BaF₂ + H₂O. It is important to note that silver hydroxide is a base and it is also considered an unstable compound, which means it can decompose to form silver oxide (Ag₂O) and water.

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Answer:

moles Pb(NO₃)₂ ≅ 0.0213 mole (three sig. figs.)

Explanation:

converting...

grams to moles => divide by formula weight

moles to grams => multiply by formula weight

for this problem ...

moles Pb(NO₃)₂ = 7.04g / 331.2g/mol = 0.021256 (calculator answer)

≅ 0.0213 mole (three sig. figs.)

Mole measure the number of elementary entities of a given substance that are present in a given sample. Therefore,  the number of moles in 7.04 g of lead (II) nitrate, Pb(NO₃)₂ is 0.0212moles.

The SI unit of amount of substance in chemistry is mole. The mole is used to measure the quantity or amount of substance. We know one mole of any element contains 6.022×10²³ atoms which is also called Avogadro number.

Mathematically,

mole =given mass ÷ molar mass

Molar mass of 1 mole of  Pb(NO₃)₂ = 331.2g/mol

given mass of Pb(NO₃)₂=7.04g

Substituting the values in above formula we get

moles of Pb(NO₃)₂ = 7.04g / 331.2g/mol

moles of Pb(NO₃)₂ = 0.0212moles

Therefore,  the number of moles in 7.04 g of lead (II) nitrate, Pb(NO₃)₂ is  0.0212moles.

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Answer:

9.3 g of Ca3(PO4)2

Explanation:

We'll begin by writing the balanced equation for the reaction. This is illustrated below:

3CaO + 2H3PO4 —> Ca3(PO4)2 + 3H2O

Next, we shall determine the number of mole of H3PO4 present in 200 cm³ of 0.3 mol/dm³ phosphoric acid (H3PO4) solution. This can be obtained as follow:

Molarity of H3PO4 = 0.3 mol/dm³

Volume = 200 cm³ = 200 cm³/1000 = 0.2 dm³

Mole of H3PO4 =?

Molarity = mole /Volume

0.3 = mole of H3PO4 /0.2

Cross multiply

Mole of H3PO4 = 0.3 × 0.2

Mole of H3PO4 = 0.06 mole

Next, we shall determine the number of mole of the salt, Ca3(PO4)2, obtained from the reaction. This can be obtained as shown below:

3CaO + 2H3PO4 —> Ca3(PO4)2 + 3H2O

From the balanced equation above,

2 moles of H3PO4 reacted to produced 1 mole of Ca3(PO4)2.

Therefore, 0.06 moles of H3PO4 will react to produce = (0.06 × 1)/2 = 0.03 mole of Ca3(PO4)2.

Thus, 0.03 mole of Ca3(PO4)2 is produced from the reaction.

Finally, we shall determine the mass of Ca3(PO4)2 produced as follow:

Mole of Ca3(PO4)2 = 0.03 mole

Molar mass of Ca3(PO4)2 = (40×3) + 2[31 + (16×4)]

= 120 + 2[31 + 64]

= 120 + 2[95]

= 120 + 190

= 310 g/mol

Mass of Ca3(PO4)2 =?

Mole = mass /Molar mass

0.03 = mass of Ca3(PO4)2 / 310

Cross multiply

Mass of Ca3(PO4)2 = 0.03 × 310

Mass of Ca3(PO4)2 = 9.3 g

Thus, 9.3 g of Ca3(PO4)2 was obtained from the reaction.

Answer:

The answer is A. Chemical

Explanation:

Have a nice day

Answer:

Chemical i think i tried googling to figure it out

Explanation:

Answer:

Six

Explanation:

Mᵣ                           =  46

Aᵣ(C) = 0.522 × 46 =  24

Difference              =  22

Less 1 O                  = -16

Aᵣ(H)                        =   6

The relative atomic mass of the H atoms is 6.

The molecule contains six hydrogen atoms.

The odor of the urine sample will also not be affected by urochrome levels, so it will not have an ammonia-like odor. Therefore, the correct answer is (c) a dark yellow color.

If a freshly voided urine sample contains excessive amounts of urochrome, it will have a dark yellow color. This is because urochrome is a pigment that gives urine its yellow color. However, the pH of the urine sample will not be affected by urochrome levels, so the pH will be within the normal range.

Urine from healthy people is clear to light yellow. The colour of your produced urine gets clearer the more water you consume. On the other hand, if you don't drink enough water, your urine will turn from dark yellow to orange.

Healthy individuals can generate 0.5 to 1.5 cc of pee per kilogramme of body weight each hour. In other words, if you weigh 50 kg, your body will generate 25–75 cc of pee in an hour. This pee will typically be excreted at least once every six hours.

The colour of the urine, which may be red, orange, blue, green, or brown, might reveal abnormal traits. There is a sign that you have a problem if the urine pH reading is greater than the usual range.

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Answer:

Explanation:

because

Neon and Krypton, both are belongs to Inert or Noble gas Group

Answer:

With an 18-carbon backbone, stearic acid is a saturated long-chain fatty acid.

What is Stearic Acid?

With an 18-carbon chain, stearic acid is a saturated fatty acid. Octadecanoic acid is the substance's IUPAC name. It has the chemical formula C₁₇H₃₅CO₂H and is a waxy solid. The word "stear," which means tallow in Greek, is where it gets its name. Stearates are the names for the salts and esters of stearic acid. The second most prevalent saturated fatty acid in nature after palmitic acid is stearic acid, which serves as its ester. [11] Stearin is the triglyceride produced when three molecules of stearic acid are combined.

Explanation:

Animal fat contains more stearic acid than vegetable fat does. The foods cocoa butter and shea butter are the notable exceptions because they contain stearic acid (as a triglyceride).

In terms of its biosynthesis, acetyl-CoA contributes two-carbon building blocks to the fatty acid synthesis machinery, which converts carbohydrates into stearic acid.

The triglycerides in fats and oils are saponified with hot water to produce stearic acid. After that, the resulting mixture is distillated.

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The solid commonly used as an inactive electrode in electrochemical cells is Graphite. So option b is the correct answer.

Graphite is often chosen as an electrode material because it is chemically inert, highly conductive, and has a stable structure. This makes it suitable for various electrochemical applications without affecting the overall cell reactions.

An inactive electrode, also known as an inert electrode, is an electrode that does not participate in the chemical reaction occurring in the cell but serves as a conductor for the flow of electrons.

The graphite working electrode, which can be employed as an anode or a cathode in various electrochemical applications, is renowned for its chemical stability, superior electrical conductivity, and high melting point.

So the correct answer is option b. Graphite.

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Answer:

The mole and Avogadro’s number are two important concepts of science that provide a link between the properties of individual atoms or molecules and the properties of bulk matter. It is clear that an early theorist of the idea of these two concepts was Avogadro. However, the research literature shows that there is a controversy about the subjects of when and by whom the mole concept was first introduced into science and when and by whom Avogadro’s number was first calculated. Based on this point, the following five matters are taken into consideration in this paper. First, in order to base the subject matter on a strong ground, the historical development of understanding the particulate nature of matter is presented. Second, in 1811, Amedeo Avogadro built the theoretical foundations of the mole concept and the number 6.022 × 1023 mol−1. Third, in 1865, Johann Josef Loschmidt first estimated the number of molecules in a cubic centimetre of a gas under normal conditions as 1.83 × 1018. Fourth, in 1881, August Horstmann first introduced the concept of gram-molecular weight in the sense of today’s mole concept into chemistry and, in 1900, Wilhelm Ostwald first used the term mole instead of the term ‘gram-molecular weight’. Lastly, in 1889, Károly Than first determined the gram-molecular volume of gases under normal conditions as 22,330 cm3. Accordingly, the first value for Avogadro’s number in science history should be 4.09 × 1022 molecules/gram-molecular weight, which is calculated by multiplying Loschmidt’s 1.83 × 1018 molecules/cm3 by Than’s 22,330 cm3/gram-molecular weight. Hence, Avogadro is the originator of the ideas of the mole and the number 6.022 × 1023 mol−1, Horstmann first introduced the mole concept into science/chemistry, and Loschmidt and Than are the scientists who first calculated Avogadro’s number. However, in the science research literature, it is widely expressed that the mole concept was first introduced into chemistry by Ostwald in 1900 and that Avogadro’s number was first calculated by Jean Baptiste Perrin in 1908. As a result, in this study, it is particularly emphasised that Horstmann first introduced the mole concept into science/chemistry and the first value of Avogadro’s number in the history of science was 4.09 × 1022 molecules/gram-molecular weight and Loschmidt and Than together first calculated this number.

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#PLEAS GIVE ME A BRAINLIEST ANSWER FOR

MY APRICIATING WORK

Answer:

13.57 approximately 14

Answer:

2 moles

Explanation:

Answer:

Explanation:

0.180 moles of Ba(OH)2 are present.

Answer:

\(\boxed {\boxed {\sf 0.123 \ mol \ Ba(OH)_2}}\)

Explanation:

Molarity is a measure of concentration in moles per liter. It is calculated using the following formula:

\(molarity= \frac{moles \ of \ solute}{liters \ of \ solution}\)

The molarity of the solution is 0.600 M Ba(OH)₂. 1 molar (M) is also equal to 1 mole per liter, so the molarity is 0.600 moles of Ba(OH)₂ per liter.

The volume of the solution is 205 milliliters, however, we need to convert the volume to liters. Remember that 1 liter contains 1000 milliliters.

Now we know the molarity and volume, but the moles are still unknown.

Substitute these values into the formula.

\(0.600 \ mol \ Ba(OH)_2 /L = \frac{x}{0.205 \ L}\)

We are solving for x or the moles of solute, so we must isolate the variable. It is being divided by 0.205 liters. The inverse of division is multiplication. Multiply both sides by 0.205 L.

\(0.205 \ L *0.600 \ mol \ Ba(OH)_2 /L = \frac{x}{0.205 \ L} * 0.205 \ L\)

\(0.205 \ L *0.600 \ mol \ Ba(OH)_2 /L =x\)

The units of liters cancel.

\(0.205 *0.600 \ mol \ Ba(OH)_2 =x\)

\(0.123 \ mol \ Ba (OH)_2 = x\)

The original measurements had at least 3 significant figures. Our answer currently has 3 sig figs, so we don't need to round.

There are 0.123 moles of barium hydroxide.

The concentration of iron(iii) chloride contaminant in the original groundwater sample is (C1 × V1 / V) × 162.2 g/mol.

Given that the chemist adds m silver nitrate solution to the sample until silver chloride stops forming. He then washes, dries, and weighs the precipitate. He finds he has collected of silver chloride. Let us calculate the concentration of iron(iii) chloride contaminant in the original groundwater sample.Calculating the concentration of iron(iii) chloride contaminant in the original groundwater sample

Here is the given information;

Mass of silver chloride precipitate = m grams

Volume of groundwater sample taken = V ml

Volume of AgNO3 solution used = V1 ml

Concentration of AgNO3 solution = C1

Molar Mass of AgCl precipitated = 143.5 g/mol

The molarity of AgNO3 solution is given as;

Molarity of AgNO3 = Number of equivalents / Volume of solution in liters

We know that 1 mole of AgNO3 gives 1 mole of AgCl, i.e., AgNO3 is equivalent to AgCl.Therefore, the number of equivalents of AgNO3 is the same as the number of equivalents of AgCl.

Number of equivalents of AgNO3 = C1 × V1

Number of equivalents of AgCl = m / 143.5 g/mol

Concentration of FeCl3 = (Number of equivalents of FeCl3 / Volume of sample in liters) × Molar mass of FeCl3

Number of equivalents of FeCl3 = Number of equivalents of AgNO3

Number of equivalents of FeCl3 = C1 × V1

Concentration of FeCl3 = (C1 × V1 / V) × Molar mass of FeCl3

Concentration of FeCl3 = (C1 × V1 / V) × 162.2 g/mol

Hence, the concentration of iron(iii) chloride contaminant in the original groundwater sample is (C1 × V1 / V) × 162.2 g/mol.

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"Group analysis" is a well-known qualitative analysis method that is used with NaBiO3 for this objective. Its distinctive characteristics are by subjecting a mixture of cations to a series of reagent treatments.

Zn has a larger negative reduction potential than Mn. As a result, if we add a potent oxidising agent, Mn+2 will remain unaffected and Zn will be preferentially oxidised to its +2 oxidation state. We may then segregate the two species as a result.

As a result, we can separate the two species by adding NaBiO3 to the solution of Mn+2(aq) and Zn+2(aq). Zn+2 will be converted by the NaBiO3 to Zn(OH)4 and precipitated out of the solution, but Mn+2 will remain in the solution as Mn(OH)2. Zn+2 cannot be oxidised by the other specified reagents since they lack potent enough oxidising abilities.

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Answer:

vapourisation can occur from solid or liquid into a gas but evaporation is straight from a liquid and is often below boiling temperature while vapourisation is often above boiling temperature

Answer:

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Answer:

zany

Explanation:

Answer:

a fresh start

Explanation:

Answer:

Ionic

Explanation:

Mg has 2 electron in it's outermost orbit, by donating this two electron to Sulfur it get stable mg 2+ electronic configuration while sulfur has 6 electron in it's outermost shell ,so sulfur accept this 2 electron and complete it's octet and become s2–.

Answer:

linear

Explanation:

Actually I consulted various sources too and that was the most sought answer,I just decided to answer you before studying it too