I WILL GIVE 35 POINTS TO THOSE WHO ANSWER THIS QUESTION RIGHT NOOOO SCAMS PLEASE

I WILL GIVE 35 POINTS TO THOSE WHO ANSWER THIS QUESTION RIGHT NOOOO SCAMS PLEASE

Answers

Answer 1

Answer:2, 7, 4, 6

Explanation:

2 C2H6 + 7 O2 → 4 CO2 + 6 H2O


Related Questions

A sample of compound A was heated in a Bunsen flame and no flame colour. On addition of sodium
hydroxide solution to a solution of A, a white precipitate formed that did not re-dissolve when more sodium
hydroxide was added. When nitric acid was added to a solution of A, the mixture bubbled giving a gas that
turned limewater cloudy.
Give the formula of the positive ion in A.
Give the formula of the negative ion in A.
Give the formula compound A.

Answers

Answer:

Explanation:

Ca++

CO3--

CaCO3

9,11,10 need those answers

Answers

9. The equation that represents a double replacement reaction is option B. CaBr₂+Na₂C0₂ ⃗ CaCO₃+2NaBr. 10. The chemical equation that is balanced correctly is option C. B₂ O₃ + 2C - B₄C+CO. 11. An unbalanced chemical equation is shown below:

_H₃BO₃ - _B₂O₃ + H₂O. The coefficients of the balanced equation is option D. 3:2:2

How did we arrive at this assertions?

The equation that represents a double replacement reaction is:

CaBr₂ + Na₂CO₃ → CaCO₃ + 2NaBr (Option B)

The balanced chemical equation is the one that has the same number of atoms of each element on both the reactant and product sides. Among the options provided, option A, B, and D are unbalanced equations, while option C is balanced. Therefore, option C is the correct answer.

The coefficients of the balanced chemical equation for the given unbalanced equation (_H₃BO₃ - _B₂O₃ + H₂O → ) are:

3H₃BO₃ - 2B₂O₃ + 3H₂O (Option D)

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We will do a little experiment. We will have four aquatic plants and we will put them into water with bromothymol blue. Read the right column in the table information below to see how this will be set up.
Let’s make some predictions about what we think will happen with the color change. Remember that the more carbon dioxide in the water, the more green the water will appear. The less carbon dioxide in the water, the more blue the water will appear.

Discussion Question

For each of the four plants, answer the question, “Will there be a color change?” If you think there will be a color change, explain what color you think the water will change to. If you don't think there will be a color change, explain why you think the color will stay the same.

WORTH 20 PTS!!!

Answers

Plants that have evolved to surviving in aquatic settings are known as aquatic plants (saltwater or freshwater).

What is the main function of aquatic plants?

Aquatic plants offer a source of sustenance, a habitat, a way to get rid of carbon dioxide, and a way to make air through photosynthesis. Since they create sustenance for both themselves and the consumers or creatures in an environment, plants serve as its producers.

Aquatic plants do not require a solid stalk because of their buoyancy in the water. Instead, they are held erect by flotation devices like gas-filled stomata and intercellular spaces, which also allow them to develop toward the water's top and receive enough sunshine for photosynthesis.

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How much energy is released when a 98g sample of water is cooled from 123°C to 23PC?

Answers

To calculate the amount of energy released when a 98g sample of water is cooled from 123°C to 23°C, we need to use the following formula:

Q = m * c * ΔT

Where:
Q = the amount of energy released or absorbed (in Joules)
m = the mass of the substance (in grams)
c = the specific heat capacity of the substance (in J/g°C)
ΔT = the change in temperature (in °C)

For water, the specific heat capacity is 4.18 J/g°C.

First, we need to calculate the change in temperature:

ΔT = 123°C - 23°C = 100°C

Next, we can plug in the values into the formula:

Q = 98g * 4.18 J/g°C * 100°C

Q = 40,964 J

Therefore, the amount of energy released when a 98g sample of water is cooled from 123°C to 23°C is 40,964 Joules

An aqueous 0. 839 M acidic acid solution is prepared with a total volume of 0. 500 L. The molecular weight of acidic acid is 60. 05G/mole what mass of acetic acid in grams is needed for the solution

Answers

We need 25.196 grams of acetic acid to prepare the solution.

To calculate the mass of acetic acid needed for the solution, we can use the following equation:

mass = moles x molecular weight

where moles = Molarity x Volume (in liters).

In this case, we know that the molarity of acetic acid (also known as ethanoic acid) is 0.839 M and the total volume of the solution is 0.500 L. Therefore, the number of moles of acetic acid needed is:

moles = 0.839 M x 0.500 L = 0.4195 moles

Next, we can use the molecular weight of acetic acid (60.05 g/mol) to calculate the mass of acetic acid needed:

mass = 0.4195 moles x 60.05 g/mol

= 25.196 g

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How many Hydrogen atoms in the formula 4H3O2

Answers

Answer:

The chemical formula "4H3O2" represents four molecules of the compound H3O2.

The formula H3O2 can be written as (H2O) + H2O, meaning it is a combination of one water molecule (H2O) and an additional hydrogen ion (H+). The hydrogen ion (H+) is an atom of hydrogen that has lost its electron, so it has a charge of +1.

Each molecule of H3O2 contains two hydrogen atoms - one from the water molecule and one from the hydrogen ion. So, to find the total number of hydrogen atoms in 4H3O2, we need to multiply the number of hydrogen atoms per molecule by the number of molecules:

2 hydrogen atoms/molecule x 4 molecules = 8 hydrogen atoms

Therefore, there are 8 hydrogen atoms in the formula 4H3O2.

Explanation:

0. 45 moles dissolved to make 605. 0 mL of solution

What is the molarity?

Answers

The molarity (M) of a solution is defined as the number of moles of solute dissolved in one liter of solution. the molarity of the solution is 0.744 M.

We can use the formula:

M = moles of solute / volume of solution (in liters)

to calculate the molarity of the solution.

Given that 0.45 moles of solute are dissolved to make 605.0 mL of solution, we first need to convert the volume to liters by dividing by 1000:

605.0 mL / 1000 mL/L = 0.605 L

Now we can use the formula to calculate the molarity:

M = 0.45 moles / 0.605 L = 0.744 M

Molarity is a commonly used unit of concentration in chemistry, and it represents the number of moles of solute present in one liter of solution. Molarity is a useful way to express the concentration of a solution because it is independent of temperature and pressure, and it is directly proportional to the amount of solute present in the solution.

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A student measured 266 mL of 0.260 M HCl solution into a beaker. How many moles of HCI were in the beaker? n(HCI) = ___ mol​

Answers

Answer:

To calculate the number of moles of HCl in the solution, we can use the formula:

moles = concentration x volume

where concentration is in units of moles per liter (M), and volume is in units of liters (L).

Converting the given volume to liters:

266 mL = 266/1000 L = 0.266 L

Substituting the given values into the formula:

moles = 0.260 M x 0.266 L

moles = 0.06896 mol

Therefore, the number of moles of HCl in the solution is 0.06896 mol (rounded to five significant figures).

What is the temperature of 4. 5 moles of nitrogen gas when it has a pressure of 4. 5 atm and a volume of 3L

Answers

The temperature of 4.5 moles of nitrogen gas when it has a pressure of 4.5 atm and a volume of 3L is 36.6 K.

PV = nRT is the formula for the ideal gas equation. In this equation, P denotes the ideal gas's pressure, V the volume of the ideal gas, n the total amount of ideal gas measured in moles, R the universal gas constant, and T the temperature.

We have,

PV = nRT

4.5 x 3 = 4.5 x 0.082 x T

T = 3/0.082

T = 36.6 K

An equation that matches the product of a gas's pressure and volume to the product of its thermodynamic temperature and the gas constant. For an ideal gas, the equation is accurate, but for actual gases at low pressures, it is a decent approximation. Also known as the ideal gas equation and the ideal gas law.

Numerous gases, including nitrogen, oxygen, hydrogen, noble gases, heavier gases like carbon dioxide, and mixes like air, can be regarded as ideal gases within tolerable tolerances across a wide parameter range centred on normal temperature and pressure.

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Before burning, the initial mass of a candle is 9.5 grams. After burning for several minutes, the final mass is 5.4 grams.

Which of the following is the best explanation for the measured masses before and after the chemical reaction?

A. The mass in the wax candle transforms into energy that is burned, hence the higher mass after the reaction.

B. The mass in the wax candle transforms into a gas that is released when burned, hence the lower mass after the reaction.

C. This cannot be an accurate measure of the final mass because the reactants and products should be equal according to the law of conservation of mass.

D. This cannot be an accurate measure of the final mass because the products should always have a greater mass than the reactants according to the law of conservation of mass.

Answers

Answer:

The correct answer is B.

Explanation:

The mass in the wax candle transforms into a gas that is released when burned, hence the lower mass after the reaction.

Burning a candle involves a chemical reaction in which the wax in the candle reacts with oxygen in the air to produce carbon dioxide and water vapor. During this reaction, some of the wax is transformed into a gas, which is released into the air. This means that the total mass of the reactants (wax and oxygen) is greater than the total mass of the products (carbon dioxide, water vapor, and unreacted oxygen), resulting in a lower mass after the reaction.

This is consistent with the Law of Conservation of Mass, which states that the total mass of the reactants is equal to the total mass of the products in a chemical reaction. However, it is important to note that in this case, the mass loss is due to the release of gas, rather than a violation of the law of conservation of mass.

what happens when steel fibers and battery touch each other please answer the question i need help ASP

Answers

Steel fibers bridge the crack at very small crack openings, transfer stresses and develop post crack strength in the concrete.

What materials make up steel fibre?

Nowadays, flexural strength, crack resistance, and explosion resistance are increased by using short length steel wire or thin steel sheets. Steel fibre is the name of this unique reinforcement, and the resulting concrete is steel fibre reinforced concrete.

What varieties of steel fibres are there?

In order to study the effects of steel fibre and the volume content ratio of fibre on the compressive, splitting, and tensile strengths of high-strength lightweight aggregate concrete (HLAC), three different types of steel fibers—micro (M), end-hooked (H), and corrugated (C)—that are frequently used in engineering applications are added to HLAC.

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explain the purpose of choosing two different metals as the reference to measure relative reduction potentials

Answers

The purpose of choosing two different metals as the reference to measure relative reduction potentials.

The process of determining the reduction potential of a metal necessitates the use of another metal for reference. A reference electrode with a well-known reduction potential is paired with the metal being studied as the working electrode to determine the reduction potential of the metal being studied.

There are a variety of reference electrodes available, but the standard hydrogen electrode is typically used as the reference electrode for electrochemical studies.

The standard hydrogen electrode's reduction potential has been calculated to be 0 volts. The reduction potential of a metal is a measure of the metal's tendency to gain electrons when it comes into touch with another substance. When a metal is oxidized or reduced, its reduction potential varies. As a result, when measuring reduction potentials, it is necessary to use two different metals as references.

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A beaker contains 50 g of ordinary (i. E. Naturally occurring) water. (a) how many moles of water are present? (b) how many hydrogen atoms? (c) how many deuterium atoms? the following information is available:

Answers

Answer:2.78 moles water

50 g / 18 g water(get from the periodic table)

Explanation:

What is the partial pressure of oxygen when this mixture is delivered at a total pressure of 9. 2 atm

Answers

Answer:

When this mixture is supplied at a total pressure of 7.8 atm, the partial pressure of oxygen will be 0.0198 atm.

The amount of pressure that each gas in a mixture exerts is referred to as "partial pressure." This is found by using the formula, Partial pressure = Mole fraction × Total pressure.

Explanation:

A student draws a model for a front that would bring heavy rainfall to an area. The diagram shows the model drawn by the student. The student made an error in the model. Which of these statements corrects the error in the model?

Answers

Cold air should have been shows advancing toward warm air, causing the warm air to sink.

What is molarity?

Molarity, also known as molar concentration, is a unit of measurement used to express the concentration of a solution. It is defined as the number of moles of a solute dissolved in one liter of solution. The unit of molarity is moles per liter (mol/L), also written as M. For example, a solution with a molarity of 0.1 M contains 0.1 moles of solute per liter of solution. Molarity is commonly used in chemistry and biochemistry to describe the concentration of solutions in experiments and industrial processes.

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Complete question:

A student draws a model for a front that would bring heavy rainfall to an area. The diagram shows the model drawn by the student. The student made an error in the model. Which of these statements corrects the error in the model?

What is the Aluminum chlorite formula​

Answers

Answer:

Explanation:

Aluminum chlorite formula​ is :

Al(ClO2)3

What volume of a 0.500 m sodium chloride solution is required to make 500. ml of a 0.100 m sodium chloride solution?

Answers

Answer:

Option D is the answer of this question

Explanation:

0.100 L

what's the answerrr?? :)
Magnesium ribbon reacts with dilute hydrochloric acid. Explain how altering the concentration of the hydrochloric acid alters the rate of the reaction???? (3 marks)​

Answers

Explanation:

The reaction between magnesium ribbon and dilute hydrochloric acid is a classic example of a single replacement reaction, which can be represented by the following chemical equation:

Mg (s) + 2HCl (aq) → MgCl2 (aq) + H2 (g)

In this reaction, magnesium (Mg) reacts with hydrochloric acid (HCl) to form magnesium chloride (MgCl2) and hydrogen gas (H2).

The rate of this reaction can be altered by changing the concentration of the hydrochloric acid. This is because the rate of a chemical reaction depends on the concentration of the reactants. Specifically, the rate of the reaction is proportional to the concentration of the reactants raised to some power, which is determined by the reaction's rate law.

In this reaction, the rate law can be expressed as:

Rate = k [Mg] [HCl]^x

Where k is the rate constant and x is the order of the reaction with respect to hydrochloric acid. The order of the reaction with respect to magnesium is one, since the concentration of magnesium does not change during the reaction.

When the concentration of hydrochloric acid is increased, the rate of the reaction increases because there are more hydrochloric acid molecules available to collide with magnesium atoms and react. This means that the value of x is greater than zero and the reaction is dependent on the concentration of hydrochloric acid.

Conversely, when the concentration of hydrochloric acid is decreased, the rate of the reaction decreases because there are fewer hydrochloric acid molecules available to react with magnesium. This means that the value of x is less than one and the reaction is not entirely dependent on the concentration of hydrochloric acid.

Please help me with this question 3.2.1-3.2.2

Answers

In mathematics, a dimension is the length or width of an area, region, or place in one way.

What is dimension?

The minimal number of numbers required to describe any location within a mathematical space (or object) is known as the dimension in physics and mathematics.  Because only one coordinate is required to describe a position on a line, such as the point at 5 on a number line, a line is said to have one dimension (1D).

Because two coordinates are necessary to define a point on a surface, such as the perimeter of a sphere or cylinder, it is referred to as having a dimension of two (2D). For instance, a point on the surface of a sphere requires both a latitude and a longitude to be located.

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The following table was made to compare rock and minerals. What information in the table needs to be corrected?

As you answer the following questions, write explanations for why your current answer is correct

Answers

The error that has to be corrected is that minerals and rocks both have unique chemical compositions. The right answer is C.

Our bodies need minerals for appropriate growth and function; they can be found in food and on the planet. In contrast to rocks, minerals typically have distinct chemical compositions. Hence, the proper option is C. The chemical makeup of a rock mass is a key determinant in the creation of minerals inside the mass, as a specific mineral can only develop when the required elements are present. Quartz, feldspar, mica, amphibole, olivine, and calcite are examples of common minerals. A rock is an assemblage of one or more minerals, or a body of undifferentiated mineral materials.

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Complete Question:

The following table was made to compare rocks and minerals. What information in the table needs to be corrected?

A. Rocks do have specific chemical compositions and minerals do not have specific chemical compositions.

B. Rocks include granite and marble, minerals include quartz and diamond.

C. Rocks do have specific chemical compositions and minerals do as well.

D. Rocks include quartz and diamond; minerals include granite and marble.

Find the oxidation state of each of the following
1. Se in H₂SeO3
2. N in Al(NO3)3
3. H in BaH₂
4. Si in Na4SiO4
5. I in NalO4
6. O in Na2O2
7. Be in HBrO
8. N in N2O3
9. C in K2Cr2O7
10. Si in NH4AlSiO4
11. Cr in K2Cr2O7
12. Cl in Mg(ClO4)2

Answers

Answer:Let x be the oxidation station of sodium in Na

2

O

2

.

It contains a peroxide linkage in which each O atom has the oxidation number of -1.

2x+2(−1)=0

x=+1

Thus, the oxidation state of sodium in Na

2

O

2

 is +1.

An open flask is half filled with water at 25°C. Phase equilibrium can be reached after

Answers

Answer:

An open flask half-filled with water at 25°C will eventually reach phase equilibrium as the water molecules at the surface evaporate and enter the air, while some air molecules dissolve into the water. Eventually, the rate of evaporation will equal the rate of condensation, and the system will reach dynamic equilibrium.

The time it takes to reach phase equilibrium depends on various factors such as the surface area of the water, the temperature, humidity, and air movement. In a still room with a moderate humidity level, it may take several hours for the water to reach phase equilibrium. However, in a hot, dry, and windy environment, the equilibrium could be reached much faster, perhaps in a matter of minutes.

Explanation:

An atom with 2 protons and 4 neutrons is an
A. Positive atom
B. Neutral atom
C. Negative atom

Answers

Answer:

The answer is B!

Explanation:

Its a Neutral Atom.

Wind can cause erosion that changes the surface of the Earth. Wind erosion can have negative effects on the environment by removing soil and polluting the air during dust storms. What is one way to prevent wind erosion?

A. People can drive off-road bikes across the desert.
B. Ranchers can let their cattle graze in areas with little plant growth.
C. Construction workers can wet the ground before driving on it or digging.
D. Farmers can remove all plant material in the soil between planting seasons.

Answers

One approach to stop wind erosion is for construction workers to moisten the ground before driving on it or digging.

How does wind erosion impact the surface of the Earth?

Wind has the power to transfer little sand grains and other debris kilometres from their original site. It may also remove layers of sediment and dirt off the top of a landscape. By scraping against the surface or shattering into smaller pieces as they travel, the materials carried by the wind degrade the soil while they are deposited in new areas.

What harm does wind erosion cause?

Impacts. Economic, health, and environmental costs associated with wind erosion include soil loss, high cleaning costs, absenteeism, transportation delays, sand-blasted crops, and retail losses.

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In your village you have a challenge of water where the Walls have muddy water, and the barehold provide safty water that hardly quench increase it. Describe any scientific prod procedures that thirst but rather your you as a chemistry student can perform to make the village water clean and safe for consumption​

Answers

Oxidation is the process of using oxygen to break down organic compounds in the water, such as certain chemicals, pesticides, and metals. This helps to make.

What is oxygen ?

Oxygen is an essential element for all living things. It is a colorless, odorless, tasteless gas found naturally in air and is the most abundant element in the Earth’s atmosphere. Oxygen is a key component in the respiration process, allowing organisms to convert the energy stored in food into energy they can use. Without oxygen, life as we know it would cease to exist. Oxygen is also necessary for combustion, which allows us to use fire and fuel to power our homes, cars, and other technology. Oxygen is an incredibly important element and without it, nothing could survive.

1. Filtration: Filtration is an important step in treating water to make it safe for drinking. It involves passing the water through a filter to remove any impurities, such as dirt and other particles.

2. Disinfection: Disinfection is the process of using chemicals, such as chlorine, to kill any bacteria and other microorganisms in the water. This is an important step for making water safe for drinking.

3. pH Adjustment: pH is a measure of the acidity or alkalinity of a solution. If the pH of the water is not within the safe range, it can be adjusted using chemicals to make it safe for drinking.

4. Coagulation and Flocculation: Coagulation and flocculation involve adding chemicals to the water to bind together particles of dirt and other impurities. This makes it easier to remove them during the filtration process.

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only 2.6% of all water on earth is ___

I NEED HELPPP

Answers

Answer:

I think...

Locked away in glaciers and ice caps.



How many grams of F are in 295 g CaF2?

Answers

M (Ca) = 40.1
M (2 F) = 38.0
M = 78.1
%F = 38/78.1
%F = 48.7
m(F) = 0.487 * 415 = 202.1

Answer: 202.1

If 400cm³ of Q was collected at 250°c and 1.20×10³nm², calculate the volume it would occupy at STP

Answers

Answer:

2.481cm³

Explanation:

this is general has equation so the formula is

P1V1/T1 = P2V2/T2

At STP, pressure is 1.01*10⁵ and temperature is 273K

((1.20*10³)400)/(250+273) = ((1.01*10⁵)V2/(273)

V2 = 2.481cm³

Match each of the elements below to a possible use for it

Answers

The elements when matched with their possible uses, gives us :

Oxygen: Generate Electricity, FireSulfur: Fireworks, Blasting CapsSelenium: Photocopiers, Dissipate Static ElectricityTellurium: PipingPolonium: Welding

What are the possible uses of some elements ?

Oxygen is an essential element for combustion or burning. Sulfur is used in the production of sulfuric acid, which is a key ingredient in the manufacture of fertilizers, detergents, and other chemicals.

Selenium is used in the manufacture of photocopiers and other electronic devices. Tellurium is used in the production of special types of stainless steel that are highly resistant to corrosion. Polonium is a highly radioactive element that is used in some industrial applications, such as in the production of nuclear batteries.

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calculate the ph during the titration of 20.00 ml of 0.1000 m hcooh(aq) with 0.1000 m naoh(aq) after 19.55 ml of the base have been added. ka of formic acid

Answers

1.8 is the pH during the titration of 20.00 mL of 0.1000 M HCOOH (formic acid) with 0.1000 M NaOH (aq) after 19.55 mL of the base have been added

This can be calculated using the equation below:

pH = -log10([H+])

Where [H+] is the concentration of H+ ions, given by the formula:

[H+] = Ka * [HCOOH] / (Ka + [NaOH])

Ka is the acid dissociation constant of formic acid, which is 1.7 × 10-4.

Using the above equation and data, we can calculate the pH during the titration of 20.00 mL of 0.1000 M HCOOH with 0.1000 M NaOH after 19.55 mL of the base have been added as follows:

[H+] = 1.7 x 10-4 * 0.1000 / (1.7 x 10-4 + 0.1000) = 0.0156 M

Therefore, pH = -log10 (0.0156) = 1.8

Hence , the pH during given titration is 1.8 .

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