Plants in areas with short growing seasons often have more chloroplasts in their cells than plans in areas with longer growing seasons compared to plant in areas with longer growing seasons plans in areas with shorter than growing seasons most likely

Answer:

Chemical reactions occur when chemical bonds between atoms are formed or broken. The substances that go into a chemical reaction are called the reactants, and the substances produced at the end of the reaction are known as the products.

Explanation:

hope it helps

Answer: We can translate the given chemical equation as:

"potassium permanganate combined with zinc chloride produces zinc permanganate and potassium chloride". The best option to answer the question is the first one.

Explanation:

The question requires us to choose, among the options given, the correct "translation" for the following chemical equation:

To solve this problem, we can separate the compounds into their cations and anions, and then analyze the metal (cation) name and anion name. Keep in mind that the name of the compound is formed by cation/metal name + anion name.

1) Let's start with KMnO4, which is formed by the cation K+ (potassium) and anion (MnO4)- (permanganate). The name of KMnO4 is potassium permanganate.

2) Next, let's analyze ZnCl2, which is formed by the cation Zn2+ (zinc) and anion Cl- (chloride). The name of ZnCl2 is zinc chloride.

3) Now, let's check Zn(MnO4)2, which is formed by Zn2+ (zinc) and (MnO4)- (permanganate). The name of Zn(MnO4)2 is zinc permanganate.

4) At last, let's analyze KCl, which is formed by K+ (potassium) and Cl- (chloride). The name of KCl is potassium chloride.

Therefore, we can translate the given chemical equation as:

"potassium permanganate combined with zinc chloride produces zinc permanganate and potassium chloride". The best option to answer the question is the first one.

Answer:

Since AlCl3 sublimes and NaCl does not sublime sublimation process will separate the two. Heat the mixture, aluminium chloride sublimes into vapour and forms the sublimate on the cooler parts of heating tube sodium chloride will remain at the bottom of the heating tube.

Explanation:

I hope it helps you ..

Answer:

its the sun

Explanation:

Explanation:

Mass of xenon tetrafluoride = 4.658 g

To determine the number of grams of xenon in 4.658 grams of the compound xenon tetrafluoride:

The chemical formula for xenon tetrafluoride is XeF_4XeF

4

Molar mass of XeF_4XeF

4

= 207.28 g/mol

Molar mass of xenon = 131.29 g/mol

First of all, we would calculate the number of moles of XeF_4XeF

4

.

\begin{gathered}Number\;of\;moles = \frac{mass}{molar\;mass}\\\\Number\;of\;moles = \frac{4.658}{207.28}\end{gathered}

Answer:

Oxidation occurs when a reactant loses electrons during the reaction. Reduction occurs when a reactant gains electrons during the reaction.

Answer:

0.059 moles are present in 2.6 g of CO₂

Explanation:

Molar mass is the mass of one mole of a substance, which can be an element or a compound. That is, it is the amount of mass that a substance contains in one mole.

In this case, the mass of each element being:

then the molar mass of the compound is:

CO₂=  12 g/mole + 2*16 g/mole= 44 g/mole

Then you can apply the following rule of three: if by definition of molar mass 44 grams of CO₂ are present in 1 mole, 2.6 grams will be present in how many moles?

\(amount of moles=\frac{2.6 grams*1 mole}{44 grams}\)

amount of moles= 0.059 moles

0.059 moles are present in 2.6 g of CO₂

Answer:

Explanation:

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The free moving charged particles in a Carbon electrode made of electrode are electrons.

An electrode is a substance that conducts electricity, which means it allows electric charges to travel through it. During electrolysis, an electrode is used to provide an electric current for the reduction and oxidation reactions that take place.

A carbon electrode is a type of electrode that is made of carbon. Carbon electrodes are commonly used in batteries and fuel cells because they are lightweight and can easily conduct electricity.

Electrons are free moving charged particles in a carbon electrode made of electrode. Electrons are negatively charged subatomic particles that orbit the nucleus of an atom. They are found in the outer shells of atoms and can move freely from one atom to another when they are excited by an electric current.

When an electric current is passed through a carbon electrode, the electrons in the outer shells of the carbon atoms are excited and become free moving charged particles. This allows the carbon electrode to conduct electricity and to participate in reduction and oxidation reactions during electrolysis.

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The concentration after 0.0120 s is 0.808 m

The decomposition of C4H8, occurring in a first-order reaction, is characterized by a rate constant of \(85.0 s^{-1\), resulting in the formation of two molecules of C2H4.

The rate of the reaction is dependent on the concentration of the reactant, C4H8, following a specific mathematical relationship. This relationship, represented by the rate equation,

d[C4H8]/dt = -k[C4H8], expresses the change in concentration over time, where k represents the rate constant.

By solving the differential equation, [C4H8] = [C4H8]0 * \(e^{(-kt)}\), with the initial concentration of C4H8, [C4H8]0, equal to 2.20 m and t equal to 0.0120 s, we can determine the concentration of C4H8 after that specific time interval.

Plugging in the values, we get [C4H8] = 2.20 m * \(e^{(-1.02)}\) = 0.808 m.

Thus, the reaction, with its unique rate constant and mathematical relationship, transforms the initial concentration of C4H8 into a new concentration, exhibiting the dynamic nature of chemical reactions.

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Arsenic, hydraulic fracturing, lead, and PFAS present chemical threats to global drinking water supplies in different ways.

Let's discuss each of them in detail:

(a) Arsenic - The origin of arsenic exposure is natural deposits or contamination from agricultural or industrial practices. Human health consequences include skin, lung, liver, and bladder cancers. It can also lead to cardiovascular diseases, skin lesions, and neurodevelopmental effects. Drivers of continued exposure include poor regulation and monitoring. Modern solutions include rainwater harvesting and treatment.

(b) Hydraulic fracturing - Hydraulic fracturing involves using a mixture of chemicals, water, and sand to extract natural gas and oil from shale rock formations. The origin of exposure is contaminated surface and groundwater due to the release of chemicals from fracking fluids and other sources. Human health consequences include skin, eye, and respiratory irritation, headaches, dizziness, and reproductive and developmental problems. Drivers of continued exposure include lack of regulation and poor oversight. Modern solutions include alternative energy sources and regulation of the industry.

(c) Lead - Lead contamination in drinking water can occur due to corrosion of plumbing materials. Human health consequences include neurological damage, developmental delays, anemia, and hypertension. Drivers of continued exposure include aging infrastructure and poor maintenance. Modern solutions include replacing lead service lines, testing for lead levels, and implementing corrosion control.

(d) PFAS - PFAS (per- and polyfluoroalkyl substances) are human-made chemicals used in a variety of consumer and industrial products. They can enter the water supply through wastewater discharges, firefighting foams, and other sources. Human health consequences include developmental effects, immune system damage, cancer, and thyroid hormone disruption. Drivers of continued exposure include the continued use of PFAS in consumer and industrial products. Modern solutions include reducing the use of PFAS in products and treatment methods such as granular activated carbon.

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Answer:

The heterogeneous mixture that has very small dispersed particles and stays mixed for a long time is colloid. Because colloid has particles that are small enough to suspended but are as large that they can scatter light.

Answer:

1. heterogeneous

2. colloid

3. suspension

Answer:

The plum-pudding model proposed that an atom is composed of negatively-charged particles floating within a sea of positive charges. This sea of positive charges served to counterbalance the negative charge on the electrons so that the atom remains neutral.

Explanation:

J.J. Thompson from experiments he conducted with the rays produced from a cathode tube to which a high voltage is applied across its two ends, discovered that these rays were negatively charged and had a mass much much smaller than the mass of any known atom. These negatively-charged rays were later called electrons. Since the atom was neutral in charge overall, J.J. Thompson then proposed the plum-pudding model.

The plum-pudding model proposed that an atom is composed of negatively-charged particles floating within a sea of positive charges. This sea of positive charges served to counterbalance the negative charge on the electrons so that the atom remains neutral. The name of this model was chosen because it resembled the English dessert, plum-pudding.

The concentration of the protein in mg/cm³ is 41.1 mg/cm³

Concentration (mol/L) = concentration (g/L) / molar mass

0.0006 = concentration (g/L) / 68500

Cross multiply

Concentration (g/L) = 0.0006 × 68500

Concentration (g/L) = 41.1 g/L

We acan convert 41.1 g/L to mg/cm³ as illustrated below:

1 g/L = 1 mg/cm³

Therefore,

41.1 g/L = (41.1 g/L × 1 mg/cm³) / 1 g/L

41.1 g/L = 41.1 mg/cm³

Thus, we can conclude that the concentration the protein in mg/cm³ is 41.1 mg/cm³

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The reactivity of the element in the periodic table as me move from the left to right in the period it will decreases first and then it will increases.

In the periodic table , for the metals the reactivity of the decreases as we move across the period from left to the right. in the group it will increases as we move from the top to bottom.

In the periodic table for the non metals, the reactivity will increases as we move from left to the right in a period. in the group it will decreases as we move from top to the bottom.

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Answer:

(d) Carbon

Explanation:

Only 7 elements exists as a diatomic molecule. Hydrogen, Oxygen, Nitrogen, Fluorine, Chlorine, Bromine, and Iodine, which can be remembered as HONCLBRIF or HONFCLBRI

Answer:

this answer is b no u can it very easy

Explanation:

because solid and liquid can compress easily

plz support me

Answer:

A. move very little, so it cannot easily change its shape.

acetic acid has a boiling point of 118oc. 391 K (118+273 = 391) is the boiling point of acetic acid in k.

Acetic acid, which has the molecular formula  \(CH_{3} COOH\), is also referred to as ethanoic acid, ethylic acid, vinegar acid, and methane carboxylic acid. As a byproduct of fermentation, acetic acid lends vinegar its distinctive smell. About 4-6% of the acetic acid in vinegar is water. In laboratories, more concentrated concentrations are often used, and glacial acetic acid is pure acetic acid with very little water present.

The 33rd most frequently manufactured chemical in the US is acetic acid. Acetic anhydride, cellulose acetate, vinyl acetate monomer, acetic esters, chloracetic acid, plastics, dyes, pesticides, photographic chemicals, and rubber are all products made with acetic acid. Other industrial applications include the production of organic chemicals, vitamins, antibiotics, hormones, and dietary additives. Acetic acid typically has amounts of 700 to 1,200 milligrams per kilogram (mg/kg) in wines, up to 860 mg/kg in aged cheeses, and 2.8 mg/kg in fresh orange juice when it is present naturally in food.

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The combination that will produce an insoluble salt is b) MnSO4 Pb(NO2)2.

A salt is a chemical compound made up of cations (positively charged ions) and anions (negatively charged ions) (negatively charged ions). The ions must be combined in such a way that the sum of the charges is zero. NaCl is the most well-known saltand it is made up of sodium cations (Na+) and chloride anions (Cl-).MnSO4 Pb(NO2)2 is the answer since both of these elements are soluble. MnSO4 is a soluble substance that is sometimes used in the production of ceramics.

MnSO4 is often used as a nutritional supplement for animals since it is a good source of manganese. Pb(NO2)2 is a powder that is bright yellow, it has a molar mass of 325.2 g/mol. It is made up of two NO2 anions (negatively charged ions) and one Pb2+ cation (positively charged ion).The formation of insoluble salts can occur when the cations and anions in a reaction solution bind to create a new solid. Since the newly formed solid is insoluble, it settles to the bottom of the solution and can be separated from the liquid through filtration. The insoluble salt that is formed is a white or colorless substance that appears as a powder.

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The balanced equation for the neutralization reaction between NaOH and H2SO4 can be given as follows: H2SO4 + 2NaOH → Na2SO4 + 2H2OThe stoichiometry of the reaction shows that 1 mole of H2SO4 reacts with 2 moles of NaOH.

We can calculate the moles of NaOH that reacted as follows:0.164 M NaOH = 0.164 moles/Liter

Therefore, the number of moles of NaOH present in 32.63 mL can be calculated as follows:

0.164 moles/L * 0.03263 L

= 0.00535 moles

Now we know that 0.00535 moles of NaOH were present in 25.00 mL of H2SO4. Since the stoichiometry shows that 1 mole of H2SO4 reacts with 2 moles of NaOH, we can calculate the number of moles of H2SO4 that were present in 25.00 mL of H2SO4 as follows:

0.00535 moles of NaOH * 1 mole of H2SO4/2 moles of NaOH

= 0.002675 moles of H2SO4

Now that we know the number of moles of H2SO4 present in 25.00 mL of solution, we can calculate the molarity of the solution as follows:

Molarity = Moles of solute/Volume of solution (in liters)

Molarity = 0.002675 moles/0.02500 Liters

= 0.107 M H2SO4

Therefore, the molarity of the H2SO4 solution is 0.107 M.

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Answer:

Explanation:

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Answer:

See belwo

Explanation:

First it becomes a compressed gas.... further pressure will cause it to condense into a liquid.

aba warmatebebi testis paxusebze :()

Answer:

1. an educated guess

2. data

3. what changes in experiment

4. what stays the same in both groups

5. the group where nothing changes, normal

6. group with independent variable, what's being tested

Answer:

consistent

(stable bodies of liquid water)

Answer:

It’s 150 C :)

Explanation:

The given question is incomplete the complete question is  

The police have made a drug bust and confiscated a large quantity of suspected cocaine. The police bring a sample to you, a forensic chemist, for analysis. The chemical formula of cocaine is C17H21NO4. After analyzing the mystery compound you find that it is 67.296% carbon,6.991% hydrogen, 4.618% nitrogen, and 21.095% oxygen. You also find that it has a molar mass of 303.35g/mol

Calculate the mystery compound’s empirical formula. Show full solutions.

The police have made a drug bust and confiscated a large quantity of suspected cocaine the police bring a sample to you, a forensic chemist, for analysis the chemical formula of cocaine is C₁₇H₂₁NO₄. After analyzing the mystery compound you find that it is 67.296% carbon,6.991% hydrogen, 4.618% nitrogen, and 21.095% oxygen. You also find that it has a molar mass of 303.35g/mol and the mystery compound is  C₁₇H₂₁NO₄  means cocaine

The cocaine is the local anesthetic and it is also used for to cause loss of feeling or numbness and drug is the any substances that is used to prevent, diagnose, treat and relieve symptoms of abnormal condition and drugs can also affect how the brain and the rest of the body work and cause changes in mood, awareness, thoughts, feelings, or behavior

Here given chemical formula of cocaine is C₁₇H₂₁NO₄ and in that carbon percentage is 67.296%  and hydrogen percentage is ,6.991%,  nitrogen percentage is 4.618%, and oxygen percentage is 21.095% and given molar mass is 303.35g/mol then

We have to find mystery compound’s empirical formula =?

So given mass/molar mass

Then we have to find mole ratio and number of moles so here 67.296% carbon then  67.296/303.35g/mol = 0.22g

6.991% hydrogen = 6.991/303.35g/mol = 0.023g

4.618% nitrogen = 4.618/303.35g/mol  = 0.015g

21.095% oxygen = 21.095/303.35g/mol = 0.069g

Mass of carbon/molar mass of carbon

67.296/12 = 5.6 mole

Mass of hydrogen/molar mass of hydrogen

6.991/1 = 6.9 mole

Mass of oxygen/molar mass of oxygen

21.095/16 = 1.3 mole

Mass of nitrogen/molar mass of nitrogen

4.618/14 = 0.32 mole

So now dividing the smallest mole then in that 0.32 is the smallest mole

5.6 mole carbon/0.32 mole = 17

6.9 mole hydrogen/0.32 mole = 21

1.3 mole of oxygen/0.32 mole = 4

0.32 mole of nitrogen/ 0.32 mole = 1

So the empirical formula is C = 17, H = 21, O = 4, N = 1

So, C₁₇H₂₁NO₄

And the mystery compound is C₁₇H₂₁NO₄

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