A carbonated drink is a
a. mixture of gases and liquids.
b. heterogeneous mixture.
C. mixture of two immiscible liquids.
d. compound.


Help!

Answer:

Nothing

Explanation:

BECAUSE DONT ASK

Answer:

Li2SO4+H2CO3

Explanation:

put d equation this way

negative ions to positive ions

Answer:

c

Explanation:

Answer:they were poisoned with powdered caffeine (C)

Explanation:

I just took the test! And got all the points for this question :) hoped I could help

The ratio of octene to oxygen is 1:12.

To determine the ratio of octene (C8H16) to oxygen (O2) in the given reaction, we need to examine the balanced chemical equation. However, the equation you provided does not seem to be balanced. The coefficients for each compound must be determined to achieve a balanced equation before we can calculate the desired ratio.

Assuming you meant the combustion reaction of octene, a balanced equation would be:

C8H16 + 12O2 → 8CO2 + 8H2O

From the balanced equation, we can see that for every 1 mole of octene (C8H16), we require 12 moles of oxygen (O2) to completely react.

This means that for every 1 mole of octene, we need 12 moles of oxygen to fully combust the octene and produce the corresponding amounts of carbon dioxide (CO2) and water (H2O) as shown in the balanced equation.

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The hydroxide ion concentration of an aqueous solution of 0.355 M hydrocyanic acid is 7.27 x 10⁻⁶ M.

To find the hydroxide ion concentration of an aqueous solution of 0.355 M hydrocyanic acid, we need to first write the balanced chemical equation for the dissociation of hydrocyanic acid in water:

\(HCN + H2O\)⇌ \(H3O+ + CN-\)

The acid dissociation constant, Ka, for hydrocyanic acid is 4.9 x 10⁻¹°. We can write the expression for the acid dissociation constant:

Ka =\([H3O+][CN-] / [HCN]\)

Since we are looking for the hydroxide ion concentration, [OH-], we can use the relationship between the concentration of hydroxide ions and the concentration of hydronium ions:

Kw = \([H3O+][OH-]\)

At 25°C, the value of the ion product constant, Kw, is 1.0 x 10⁻¹⁴. Using the expression for Kw, we can find the concentration of hydroxide ions:

\([OH-]\) = \(Kw / [H3O+]\)

\([OH-]\)= \(1.0 x 10⁻¹⁴ / [H3O+]\)

To find [H3O+], we can use the expression for the acid dissociation constant and the concentration of hydrocyanic acid:

Ka = \([H3O+][CN-] / [HCN]\)

\([H3O+]\) = \(Ka x [HCN] / [CN-]\)

Substituting this into the expression for [OH-], we get:

\([OH-]\) = 1.0 x 10⁻¹⁴ / \((Ka x [HCN] / [CN-])\)

\([OH-]\) = \(([CN-] / Ka) x (1 / [HCN])\) x 1.0 x 10⁻¹⁴

\([OH-]\)= (0.355 M / 4.9 x 10⁻¹°) x (1 / 0.355 M) x 1.0 x 10⁻¹⁴

\([OH-]\)= 7.27 x 10⁻⁶  M

To find the pH of an aqueous solution of 0.595 M acetic acid, we need to first write the balanced chemical equation for the dissociation of acetic acid in water:

\(CH3COOH + H2O ⇌ H3O+ + CH3COO-\)

The acid dissociation constant, Ka, for acetic acid is 1.8 x 10⁻⁵. We can write the expression for the acid dissociation constant:

Ka = \([H3O+][CH3COO-] / [CH3COOH]\)

To find the pH, we can use the relationship between the concentration of hydronium ions and the pH:

pH = -log\([H3O+]\)

To find [H3O+], we can use the expression for the acid dissociation constant and the concentration of acetic acid:

Ka = \([H3O+][CH3COO-] / [CH3COOH]\)

\([H3O+]\) = Ka x \([CH3COOH] / [CH3COO-]\)

Substituting this into the expression for pH, we get:

pH = -log\((Ka x [CH3COOH] / [CH3COO-])\)

pH = -log(Ka) - log\(([CH3COOH] / [CH3COO-])\)

pH = -log(1.8 x 10⁻⁵) - log(0.595 \(M / [CH\)

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Explanation:

lactose is disaccharide

because it contains 1 monosaccharide galactose +

1 monosaccharide glucose

The correct answer to the question is: disaccharide

Monosaccharides are simple sugar which can not be hydrolysed into simpler or smaller molecules.

Disaccharides are sugars produced by the condensation of two monosaccharides with the elimination of a water molecule.

A Monomer is a small molecule which can combine with other similar molecules to form a large molecule called polymer. Thus, a monomer of starch is simply a small molecule that combines together to form a polysaccharide called starch. The monomer of starch is glucose.

Glucose and galactose combined to form lactose i.e

The above is simply a demonstration of how disaccharides are produced.

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Due to their stronger metallic bonding and more compact atomic structure, the transition elements have higher melting and boiling temperatures and are often denser than the alkali metals.

Elements from Group 1 have similar properties. All of them are supple silver metals. These metals are extremely reactive and have low melting temperatures due to their low ionisation energy. As you descend the chart, this family becomes more reactive.

The d orbitals of transitional elements are only partially filled. A transition element is defined by IUPAC as an element that may form stable cations and has an electron d subshell that is only partly filled.

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Answer:

I BELIEVE IT is c.

Explanation:

It seems that Ryan's estimate of 4 hours is not reasonable. It should take him closer to 8 hours to mow a lawn that is twice as large as the one he can mow in 2 hours.

To determine whether Ryan's estimate is reasonable or not, we can calculate the area of each lawn and compare the results.

The area of the 50 feet by 110 feet lawn is:

Area = length x width = 50 ft x 110 ft = 5500 sq ft

Since Ryan can mow this lawn in 2 hours, his mowing rate is:

Rate = Area / Time = 5500 sq ft / 2 hrs = 2750 sq ft/hr

Now, let's calculate the area of the 100 feet by 220 feet lawn:

Area = length x width = 100 ft x 220 ft = 22000 sq ft

If Ryan's mowing rate is consistent, then the time it will take him to mow this lawn is:

Time = Area / Rate = 22000 sq ft / 2750 sq ft/hr = 8 hours

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You would have to wait approximately 3,180 years for 1/5 of the radium to disappear. This is because the half-life of radium is approximately 805.4 years.

Suppose you have a cache of radium, which has a half-life of approximately 1590 years.

To determine how long you would have to wait for 1/5 of the radium to disappear, you need to use the formula for radioactive decay:

A=A₀(1/2)^(t/T)

where:

A₀ = initial amount of radium

A = amount of radium remaining after t years

T = half-life of radium

Firstly, note that 1/5 of the radium has disappeared, meaning that you have 4/5 of the radium remaining.

Therefore, A=4/5 A₀

We want to find t, the time it takes for 1/5 of the radium to disappear. This means that we need to find the time it takes for A to be reduced to 1/5

A₀ (or 2/5 A).2/5 A₀=A₀(1/2)^(t/T)2/5=(1/2)^(t/1590)

Taking the logarithm of both sides, we get:

t/1590=log(2/5)/log(1/2)

Solving for t, we get:

t = 805.4 years

Therefore, you would have to wait approximately 805.4 years for 1/5 of the radium to disappear.

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Answer:

i think itd be an  exothermic reaction

Explanation:

An exothermic process releases heat, causing the temperature of the immediate surroundings to rise.

pH = -log[H3O+] = -log(8.26 x 10^-5) = 4.083 (three decimal places because the concentration had three sig figs)

a) The balanced chemical equation describing the neutralization of citric acid (C₆H₈O₇) with NaOH is:

3NaOH + C₆H₈O₇ → Na₃C₆H₅O₇ + 3H₂O

b) To calculate the volume of 0.3244 M NaOH needed to neutralize 0.266 g of citric acid, we need to consider the stoichiometry of the balanced equation.

Determine the molar mass of citric acid:

C₆H₈O₇ has a molar mass of 192.12 g/mol.

Calculate the moles of citric acid:

Moles of citric acid = mass of citric acid / molar mass of citric acid.

Use the stoichiometry of the balanced equation to determine the moles of NaOH needed:

According to the balanced equation, 3 moles of NaOH react with 1 mole of citric acid.

Calculate the volume of 0.3244 M NaOH:

Volume of NaOH = (moles of NaOH needed / molarity of NaOH) * 1000.

Substituting the values and performing the calculations, you can determine the volume of 0.3244 M NaOH needed to completely neutralize 0.266 g of citric acid.

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Answer:

1. Moles of oxygen required to react with 5 moles of C₈H₁₈ = = 62.5 moles of oxygen

2. Mass of oxygen required = 2000 g of oxygen

3. Moles of CO₂ that will be produced = 40 moles of CO₂

4. Mass of CO₂ that will be produced = 1760 g of CO₂

5. Moles of H₂O that will be produced = 45 moles of H₂O

Explanation:

Balanced equation of the reaction : 2 C₈H₁₈ + 25 O₂ ---> 16 CO₂ + 18 H₂O

1. Mole ratio of Oxygen and C₈H₁₈ = 25 : 2

Moles of oxygen required to react with 5 moles of C₈H₁₈ = 5 × 25/2 moles

Moles of oxygen required to react with 5 moles of C₈H₁₈ = = 62.5 moles of oxygen

2. Mass of oxygen required = number of moles of oxygen × molar mass of oxygen

Molar mass of oxygen = 32.0 g/mol

Mass of oxygen required = 62.5 moles × 32.0 g/mol

Mass of oxygen required = 2000 g of oxygen

3. Mole ratio of CO₂ and C₈H₁₈ = 16 : 2

Moles of CO₂ that will be produced = 5 × 16/2 moles

Moles of CO₂ that will be produced = 40 moles of CO₂

4. Mass of CO₂ that will be produced = number of moles of CO₂ × molar mass of CO₂

Molar mass of CO₂ = 44.0 g/mol

Mass of CO₂ that will be produced = 40 moles × 44 g/mol

Mass of CO₂ that will be produced = 1760 g of CO₂

5. Mole ratio of H₂O and C₈H₁₈ = 18 : 2

Moles of H₂O that will be produced = 5 × 18/2 moles of H₂O

Moles of H₂O that will be produced = 45 moles of H₂O

Pyramid of energy has not an advantage: B. Assigning the decomposers and detritivores to a particular trophic level.

Pyramid of energy is a graphical representation of the amount of energy at each trophic level of a food chain (see the picture below).

The bottom level represents the producers, followed by primary, secondary and tertiary consumers.

The decomposers and detritivores do not have a particular trophic level.

Decomposers break down dead plants and animals into simpler inorganic substances.

Detritivores are organisms, for example a fungus or an earthworm, that are decomposing organic matter.

Decomposers have very important role in the circle of life.

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Answer:

b. Assigning the decomposers and detritivores to a particular trophic level.

Explanation:

Answer:

When water boils, H2O molecules break apart to form hydrogen molecules and oxygen molecules. I disagree with the statement. Boiling is simply Process 1, in which only intermolecular forces are broken and the water molecules stay intact. No intramolecular or covalent bonds break in this process. Molecules with hydrogen bonds will always have higher boiling points than similarly sized molecules which don't have an an -O-H or an -N-H group. The hydrogen bonding makes the molecules "stickier," such that more heat (energy) is required to separate them.

:Explanation

-O-H or an -N-H

When the temperature is raised, the higher kinetic energy of the water molecules causes the hydrogen bonds to completely break, allowing water molecules to escape into the air as gas.

A chemical bond is a long-lasting attraction between atoms, ions, or molecules that allows chemical compounds to form.

Ionic bonds are formed by the electrostatic force between oppositely charged ions, whereas covalent bonds are formed by the sharing of electrons.

Chemical bonding allows scientists to combine the 100-plus elements of the periodic table in a variety of ways to create chemical compounds and materials.

When the temperature is raised as when water is being boiled, the higher kinetic energy of the water molecules causes the hydrogen bonds to fully disintegrate, allowing the water molecules to escape as gas into the air.

Thus, this way interactions are overcome.

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In response to a rapid increase of organic acid in the body, you would expect to observe acidosis.

An increase in organic acid levels in the body can lead to a condition called acidosis. Acidosis occurs when there is an excess accumulation of acid or a decrease in the body's ability to remove acid effectively. This disrupts the normal pH balance in the body, shifting it towards the acidic side. The main indicators of acidosis include a decrease in blood pH and an increase in hydrogen ion concentration.

The body maintains a delicate acid-base balance, and any disruption to this balance can have adverse effects on various physiological processes. Acidosis can have several causes, such as metabolic disorders, kidney dysfunction, or respiratory conditions. The symptoms of acidosis can vary depending on the severity and underlying cause but may include fatigue, confusion, shortness of breath, increased heart rate, and potentially more severe complications if left untreated. Prompt medical attention is necessary to identify the cause of acidosis and restore the acid-base balance in the body to prevent further complications.

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D

all of above becuase it's all conservation

Answer:

The answer is c which is pollution is likely to decrease water supply in the future

Answer:

1

Explanation:

Answer: 1 sodium atom

Explanation:

Na -1 sodium

H -3 hydogen

O -1 oxygen

Answer:

In CHEMISTRY: an element is a pure substance which cannot be broken down by any chemical means, consisting of atoms which have identical numbers of protons in their atomic nuclei.e.t.c.

Explanation:

Answer:

Element is a pure substance which cannot be splitted into smaller substances by simple chemical processes.

Answer:

\(m_{undissolved}=27g\)

Explanation:

Hello,

In this case, we first define the solubility as the maximum amount of a solute that is completely dissolved in an specific amount of solvent and it is temperature-dependent. Thus for potassium iodide, its solubility at 30°C is 153 g per 100 cm3 of water, therefore, with the given amount, the undissolved amount results:

\(m_{undissolved}=180g-153g=27g\)

Best regards.

Answer:

what's different about the particles in her hand are that for one are a solid in contrast to the ice cream which is partially liquid.

Answer:

density, is the a substance is its mass per unit volume thats what i wrote in my notebook

Explanation:

Answer:

Its C!

Explanation:

NH3 and OH- are both a Brønsted-Lowry base, while H2O and NH4 are acids!

Hope this helped!

The following is an example of a Bronsted-Lowry base will be

A material that receives protons is known as just a Bronsted-Lowry base.

Ammonia was pleased to receive a proton mostly from water's hydrogen (H2O) to form NH4. Therefore, NH3 will be considered as Bronsted-Lowry base.

Therefore, the correct answer will be NH3.

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All the hydrocarbons have the root name alkanes but differ in their suffixes of -ane, -ene, and -yne for alkanes, alkenes, and alkynes respectively.

All the hydrocarbons are composed of hydrogen and carbon but differ in the presence of single, double, and triple carbon-to-carbon bonds in alkanes, alkenes, and alkynes respectively.

All hydrocarbons undergo combustion reactions and are used as fuels, however their luminosity increases from alkanes, alkenes, and alkynes.

Hydrocarbons are organic compounds that are composed of only carbon and hydrogen.

Hydrocarbons are classified based on the nature of carbon-to-carbon covalent bonds present in the molecules as follows;

The hydrocarbons are similar in chemical properties in that they all burn in the presence of oxygen to produce carbon dioxide and water.

However, the order of decreasing reactivity is as follows:

alkynes > alkene > alkanes

Hydrocarbons are mostly used as fuels and are also used as organic solvents.

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Answer:

1.5625

Explanation:

the half life of an isotope is the amount of time it takes for one half of the isotope to decay

28650 is 5 half lives (28650÷5730=5)

after one half life the mass will be 25 grams

after two half lives the mass will be 12.5 grams

after 3 half lives the mass will be 6.25 grams

after 4 half lives the mass will be 3.125 grams

after 5 half lives the mass will be 1.5625 grams

Answer:

More than 30

Explanation:

There are more than More than 30 STDs