Which statements about mixture is FALSE?
A. The ingredients ofvthe mixture keep their physical properties
B. Mixture components can be separated
C. All mixtures are food or drink only
D. A mixture contains more than one ingredients

The name of the given alkene is 2-methyl-1-propene. The correct option is A.

Alkenes are inorganic compounds. They are the series of hydrocarbons, that are formed by carbon-carbon double bonds. To find out alkenes, you have to see that the number of hydrogen atoms is always double the number of carbons.

Propene is an unsaturated compound, which is the second-simplest compound, and it contains a single double bond, and it is a colorless gas and has a texture of petroleum jelly.

CH₃C = CH₂

I

CH₃

Here, the three CH₃ are shown in the diagram, so it will be the methyl because it contains 3 CH₂, and now see the propene means one double bond and four carbon atoms. So it will be the 2-methyl-1-propene.

Thus, the correct option is A. 2-methyl-1-propene.

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Explanation:

here's the answer to your question

The pressure of the isoflurane gas at the temperature of 27.4 °C is 0.31 atm.

Gay-Lussac's law states that the pressure of a gas is directly proportional to the absolute temperature when the volume of the gas is kept constant.

Mathematically, Gay Lussca's law can be written as follows:

P/T = k

It is also expressed as the pressure of the gas being directly proportional to temperature.

P ∝ T                    (where V is constant)

or

\(\frac{P_1}{T_1} =\frac{P_2}{T_2}\)                                       ................(1)

Given, the initial pressure and initial temperature of the gas:

P₁ = 0.30 atm

and T₁ =  17.9 °C. = 17.9 + 273 = 290.9 K

The final temperature of gas T₂ = 27.4°C = 27.4 + 273 = 300.4 K

Now,  from the equation (1): \(P_2=\frac{P_1\times T_2}{T_1}\)

P₂ = (0.30) × (300.4)/290.0

P₂ = 0.31 atm

Therefore, the pressure of the isoflurane at  27.4°C is equal to 0.31 atm.

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Answer:

V «T, 1/P, n (Product of

Temperature, Half of pressure, and Moles)

Explanation: If V o n, V « 1/P, and V T

then, V« T, 1/P, n

Explanation:

The change in temperature of a subtance can be calculate d using this formula:

Q = m * C * ΔT

ΔT = Q/(m * C)

Where ΔT is the temperature change, Q is the heat absorbed or released, m is the mass of the samle and C is the specifice heat.

We can suppose that we have three samples with the same mass but different substances. We ha.e 1 gram of each substance and their specific heats are:

m = 1 g

C1 = 1 J/(g°C) C2 = 10 J/(g°C) C3 = 100 J/(g°C)

These samples will absorb 1 J of energy and we can calculate the temperature chanee for each substance:

Q = 1 J

Sample 1:

ΔT1 = Q/(m * C1)

ΔT1 = 1 J/(1 g *

Answer:

Answer:

3.46 x 10²³ atoms C₃H₈

Explanation:

To find the total atoms, you need to (1) convert grams to moles (via molar mass from periodic table) and then (2) convert moles to atoms (via Avogadro's number).  It is important to arrange the ratios/conversions in a way that allows for the cancellation of units. To clarify, the desired unit should be in the numerator. The final answer should have 3 sig figs to match the given value (25.3 g).

Molar Mass (C₃H₈): 3(12.01 g/mol) + 8(1.008 g/mol)

Molar Mass (C₃H₈): 44.094 g/mol

Avogadro's Number:

6.022 x 10²³ atoms = 1 mole

25.3 g C₃H₈             1 mole              6.022 x 10²³ atoms
--------------------  x  ------------------  x  --------------------------------  =  
                               44.094 g                      1 mole

 =  3.46 x 10²³ atoms C₃H₈

Answer:

When a chemical reaction starts with 5 atoms of hydrogen, and the reaction goes into completion, it must give us 5 atoms of hydrogen.

This is in compliance with the law of conservation of mass which states that "in a chemical reaction, matter is neither created nor destroyed but converted from one form to another".

In chemical reactions, bonds are broken and new compounds are formed in the process. The same number of species at the start and end of the reaction must still be the same.

Explanation:

Reagents that are entirely consumed by a chemical reaction are known as limiting reagents.

Thus, They are additionally known as limiting reactants or limiting agents. A predetermined quantity of reactants are necessary for the reaction to be completed, according to the stoichiometry of chemical reactions.

In the aforementioned reaction, 2 moles of ammonia are created when 3 moles of hydrogen gas react with 1 mole of nitrogen gas.

In most cases, this reactant dictates when the reaction will end. The reaction stoichiometry can be used to determine the precise quantity of reactant that will be required to react with another element. The limiting agent is determined by the mole ratio rather than the mass of the reactants.

Thus, Reagents that are entirely consumed by a chemical reaction are known as limiting reagents.

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Answer:

weight is the measure of force put onto an object

like if you put a heavier object on something elastic, it would go lower because weight creates force and friction

Answer:

the Ans is 2

Explanation:

marks as BRAINLY

In calcium hydroxide, there are total 6 atoms are present. 2 calcium atoms, 2 oxygen atoms and 2 hydrogen atoms are present in calcium hydroxide molecule.

An inorganic substance having the chemical formula Ca(OH)2 is calcium hydroxide. It is created when quicklime is combined or slaked with water and is a colorless crystal or white powder. It goes by a variety of names, including pickled lime, hydrated lime, caustic lime, builders' lime, and slaked lime.

A white powder without any smell is calcium hydroxide. It is applied in commercial contexts such sewage treatment, paper manufacturing, building, and food processing. It can be used in dentistry and medicine. In root canal fillings, for instance, calcium hydroxide is frequently used.

Calcium oxide is converted to calcium hydroxide, sometimes known as slaked lime, or Ca(OH)2. A little percentage of it dissolves when combined with water, creating a substance known as lime water.

Thus, In calcium hydroxide, there are total 6 atoms are present.

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Water and salt is a correct combination. Therefore, the correct option is option A among all the given options.

Chemical reaction, the transformation of one or more chemicals (the reactants) into one or more distinct compounds (the products). Chemical elements or chemical compounds make up substances. In a chemical reaction, the atoms that make up the reactants are rearranged to produce various products.

Chemical reactions are a fundamental component of life itself, as well as technology and culture. Burning fuels, melting iron, creating glass as well as pottery, brewing beer, producing wine, and making cheese are just a few examples of ancient processes that involved chemical reactions. Water and salt is a correct combination.

Therefore, the correct option is option A.

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Answer:

Radioactive decay is a random event.

Explanation:

on edge

Answer:

Radioactive decay is a random event.

Explanation:

Edge 2020

The length measurements in increasing order of magnitude from smallest to largest is Nanometer, micrometer, centimeter, decimeter, dekameter, kilometer.

Measurement is the quantification of attributes of an object or event, which can be used to compare with other objects or events.

Measurement is a process of determining how large or small a physical quantity is as compared to a basic reference quantity of the same kind.

Hence, Among the given length measurements, The increasing order of magnitude from smallest to largest is Nanometer, micrometer, centimeter, decimeter, dekameter, kilometer.

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Answer:16km/hr

Explanation:

48km/3hr= 16km/hr

Answer:

16km/ hr

Explanation:

Answer:

B

Explanation:

Vaccines prevent illness and disease

Answer:

CaS + 2H2O is the balanced equation

The amount of heat energy produced when 1 g of hydrogen and 2 g of nitrogen are reacted, is -6.61 KJ

First, we shall obtain the limiting reactant. Details below:

3H₂ + N₂ -> 2NH₃

From the balanced equation above,

28 g of N₂ reacted with 6 g of H₂

Therefore,

2 g of N₂ will react with = (2 × 6) / 28 = 0.43 g of H₂

We can see that only 0.43 g of H₂ is needed in the reaction.

Thus, the limiting reactant is N₂

Finally, we the amount of heat energy produced. Details below:

3H₂ + N₂ -> 2NH₃ ΔH = -92.6 KJ

From the balanced equation above,

When 28 grams of N₂ reacted, -92.6 KJ of heat energy were produced.

Therefore,

When 2 grams of N₂ will react to produce = (2 × -92.6) / 28 = -6.61 KJ

Thus the heat energy produced from the reaction is -6.61 KJ

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Answer: The tempearture of 11.2 L of CO is \(3.0^0C\).

Explanation:

To calculate the final volume of the system, we use the equation given by Charles' Law. This law states that volume of the gas is directly proportional to the temperature of the gas at constant pressure.

Mathematically,

\(\frac{V_1}{T_1}=\frac{V_2}{T_2}\)

where,

\(V_1\text{ and }T_1\) are the initial volume and temperature of the gas.

are the final volume and temperature of the gas.

We are given:

\(V_1=11.2L\\T_1=?\\V_2=13.3L\\T_2=55^0C=(55+273)K=328K\)

Putting values in above equation, we get:

\(\frac{11.2L}{T_1}=\frac{13.3L}{328K}\\\\T_1=276K=(276-273)^0C=3.0^0C\)

Thus the tempearture of 11.2 L of CO is \(3.0^0C\), pressure remaining constant.

Answer:

D.) When HX adds to an asymmetrical alkene, the halogen attaches to the least substituted sp² carbon.

Explanation:

Which of the following statements is NOT true?

A.) When HX adds to an asymmetrical alkene, the sp² carbon bonded to the most H atoms is protonated. TRUE. This is known as Markovnikov's rule.

B.) When HX adds to an asymmetrical alkene, protonation leads to the most stable carbocation intermediate. TRUE. The order of stability of carbocations is tertiary > secondary > primary.

C.) When HX adds to a symmetrical alkene, either of the sp² carbons can be protonated. TRUE. Since the alkene is symmetrical, either carbon can be protonated.

D.) When HX adds to an asymmetrical alkene, the halogen attaches to the least substituted sp² carbon. FALSE. The halogen attaches to the most substituted sp² carbon.

When an organism is homozygous, it contains two copies of the same allele for a gene. If two copies of the same recessive allele are present, the condition is homozygous recessive. Fifty percent of the offspring are homozygous recessive.

Answer:

1.08  J / (g-C)

Explanation:

spec heat * 8 * 5.09 = 44 j

spec heat = 44/(8*5.09) = 1.08 J/(g-C)

983.31K

According to the Gay Lussac's law, the pressure of a given mass of gas is directly proportional to the volume provided that the volume is constant.

where:

P1 and P2 are the initial and final pressure respectively

T1 and T2 are the initial and final temperature temperature respectively

Given the following parameters:

Substitute the given parameters into the formula

Hence the final temperature of the gas will be 983.31K

Answer:

US₂

Explanation:

Uranium sulfide (US₂)

Uranium atomic symbol = U

Sulfur atomic symbol = S

Uranium valency = +4

Sulfur valency = -2

So;

Uranium sulfide (US₂)

Answer:

75.924 g

Explanation:

To answer this question we first need to calculate the molar mass of Ga₂(SO₃)₃:

Molar Mass of Ga₂(SO₃)₃ = (Molar Mass of Ga)*2 + (Molar Mass of SO₃)*3

Molar Mass of Ga₂(SO₃)₃ = (69.72 g/mol)*2 + (80.06 g/mol) * 3

Then we convert 0.20 moles to grams, using the molar mass of Ga₂(SO₃)₃:

Mass of 0.20 moles of Ga₂(SO₃)₃ is 75.924 g

It is defined as the ratio of given mass over molar mass.

Given:

Number of moles= 0.20 moles

To find:

Mass=?

We need to calculate molar mass of Ga₂(SO₃)₃ first:

Molar Mass of Ga₂(SO₃)₃ = (Molar Mass of Ga)*2 + (Molar Mass of SO₃)*3

Molar Mass of SO₃ = Molar Mass of S + (Molar Mass of O)*3 = 80.06 g/mol

Molar Mass of Ga_2(SO_3)_3 = (69.72 g/mol)*2 + (80.06 g/mol) * 3

Molar Mass of Ga₂(SO₃)₃ =  379.62 g/mol

Then we convert 0.20 moles to grams, using the molar mass of Ga₂(SO₃)₃:

\(\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}} \\\\\text{Given mass}=\text{Number of moles}*\text{Molar mass}\\\\\text{Given mass}=0.20 moles*379.62 g/mol\\\\\text{Given mass}=75.92 grams\\\)

Thus, the mass of 0.20 moles of Ga₂(SO₃)₃ is 75.92 grams.

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Scientific theories explain why a phenomenon occurs and a scientific law explains what occurs. The correct option is A.

A scientific theory is an explanation for a phenomenon in the natural world or the universe that has undergone extensive testing and verification using approved procedures for observation, measurement, and result evaluation.

A scientific law often describes an observed phenomenon. It doesn't explain the phenomenon's existence or its origins.

A scientific theory is the explanation for a phenomenon. It is a myth that with enough study, theories can become laws.

Thus, the correct option is A.

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Answer: (2) reduced by gaining electrons

Explanation:

The oxidation number of potassium changes from +1 to 0, meaning that it gained electrons, and was thus reduced.

Answer: 2.5 lit

Explanation:

The molality of solution = 1.576

Given

6.75% solution of ethanol in water​

Required

The molality

Solution

Assume 100 g solution ,

Ethanol = 6.75 g⇒solute

Water = 93.25 g = 0.09325 kg⇒solvent

Molality = mol solute/kg solvent

mol Ethanol(MW=46 g/mol) :

\(\tt mol=\dfrac{6.75}{46}=0.147\)

the molality :

\(\tt m=\dfrac{0.147}{0.09325}=1.576\)

Answer:

phototropism

Explanation:

since photo is (light?

A student dissolves 15.g of styrene in 250.mL of a solvent with a density of 0.88g/mL. The molarity is 0.57 M.

The mass of the mass of the styrene = 15 g

The molar mass of the styrene = 104 g/mol

The  number of the moles of the styrene = mass / molar mass

The  number of the moles of the styrene = 15 / 104

The  number of the moles of the styrene = 0.144  mol

The molarity = moles / volume in L

Where,

The mole = 0.144

The volume = 250 mL = 0.250 L

The molarity = 0.144 / 0.250

Molarity = 0.57 M

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