What is the length of one mole of the typical cell phone that is approximately 15 cm in length?

The statement it reacts with an acid is an observation of a chemical property of the substance.

A chemical property is a characteristic of a substance that are observed in a chemical reaction. Some major chemical properties include flammability, toxicity, heat of combustion, pH value, rate of radioactive decay and chemical stability.

Properties of acids:

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Answer: what would swimming in mathane lake on titan feel like.

Explanation:

Both methane and titan are gases that are combustible in nature.

Those gases which are inflammable are called combustible gases.

For example:-

These gases have various uses in daily life. these uses as follows:-

The gas will mix in the lake which harms the aquatic animals. The aquatic animals have a hard time to breath.

Hence, the lake will be polluted.

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Volume is measured inside a graduated cylinder

Proportion cannot be determined without the necessary data.

To determine the proportion of respondents with blood type O who are between the ages of 21 to 24, we need to find the ratio of the number of individuals with blood type O and age between 21 to 24 to the total number of respondents with blood type O.

However, the two-way table with the necessary information is not provided, making it impossible to provide an accurate proportion.

The values 0.376, 0.429, and 0.432 given in the question are potential answers, but without the actual data, we cannot determine the correct proportion.

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The speed of the proton after being accelerated from rest through a 4.9×10^7 V potential difference is approximately 1.54×10^7 m/s.

To calculate the speed of a proton after being accelerated from rest through a 4.9×10^7 V potential difference, we can use the formula for the kinetic energy of a charged particle:

KE = q × V

Where q is the charge of the particle and V is the potential difference.

For a proton, q = +1.6×10^-19 C, the kinetic energy gained by the proton is:

KE = (1.6×10^-19 C) x (4.9×10^7 V)

     = 7.84×10^-12 J

Now, we can use the formula for kinetic energy to calculate the speed of the proton:

KE = (1/2)mv^2

Where m is the mass of the proton, and v is its speed. The mass of a proton is 1.67×10^-27 kg.

Substituting the values, we get:

7.84×10^-12 J = (1/2) (1.67×10^-27 kg)(v^2)

Solving for v (speed), we get:

v = √[(2 x 7.84×10^-12 J) / (1.67×10^-27 kg)]

v = 1.54×10^7 m/s

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Answer:

Metallic character of the element

Explanation:

Carbon reacts with fluorine to produce carbon tetrafluoride (CFA) at a temperature above 900"C.

The most basic perfluorocarbon is tetrafluoromethane, sometimes known as carbon tetrafluoride or R-14. Tetrafluoromethane is the perfluorinated equivalent to the hydrocarbon methane, as its IUPAC name suggests. It is also known as a haloalkane or halomethane. Carbon Tetrafluoride is a covalent nonpolar chemical. Individually, carbon has an electronegativity of 2.5, whereas fluorine has an electronegativity of 4.0.

Carbon tetrafluoride can be used to prepare organofluorine compounds in fluorine chemistry. It is also utilised in low-temperature processes as a solvent. CF4 plasma is commonly used to etch a range of materials during the manufacturing of electronics devices.

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According to the Boyle's law, at constant temperature,  the pressure of

the gas is 1.99 atmospheres.

Boyle's law is an experimental gas law which describes the behavior of gas as  pressure of the gas decreases the volume increases. It's statement can be stated as, the absolute pressure which is exerted by a given mass of an ideal gas is inversely proportional to its volume provided temperature and amount of gas remains unchanged.

According to the equation the unknown pressure and volume of any one gas can be determined if two gases are to be considered.That is,given by the equation

P₁V₁=P₂V₂substitution of values gives

P₂= 1.15×215/124=1.99 atmospheres.

Thus,  at constant temperature,  the pressure of the gas is 1.99 atmospheres.

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Answer:

Hmm 65

Explanation:

The increase in temperature causes the concentration of NO at equilibrium to increase because the reaction shifts to the left in order to relieve the stress caused by the increased temperature.

LeChâtelier's principle states that when a system at equilibrium is subjected to a stress, it will shift in a direction that tends to relieve that stress. In the case of the reaction of nitrogen monoxide (NO) with oxygen to form nitrogen dioxide (NO2), increasing the temperature is a stress that disturbs the equilibrium of the reaction.

At higher temperatures, the reaction will proceed more quickly due to the increased kinetic energy of the reacting species. This means that more NO2 will be formed, causing the concentration of NO2 to increase. According to LeChâtelier's principle, the reaction will shift to the left in order to relieve this stress and restore equilibrium. This means that the concentration of NO will increase, while the concentration of NO2 will decrease.

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Answer: a chemical change. A physical change would be like crushing up a piece of paper, you could fold it back out until its flat. A chemical change would be something unreversable, i.e. going from all the different ingredients to a fully b asked cookie. The yellowing of pages is due to oxidization.

Explanation:

The yellowing of the pages of an old book is a chemical change that happens due to the reaction of paper with the air and fungus present in the air.

Chemical changes are those changes that occur due to the reaction of two or more substances between them. These changes are irreversible. These changes change the physical and chemical condition of the substance.

A perceptible change would be comparable to crumpling up a sheet of paper and then folding it out again till it is flat.

An irreversible chemical shift would be going from all the various ingredients to a completely baked cookie. Oxidation is what causes the pages to turn yellow.

Thus, an old book's pages will eventually turn yellow due to a chemical interaction between the paper and the air and any fungi in the air.

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Answer:

Explanation:

The density of a substance can be found by using the formula

\(density = \frac{mass}{volume} \\ \)

From the question we have

\(density = \frac{15}{14} \\ =1.0714285 ...\)

We have the final answer as

Hope this helps you

Based on the ABG results provided, the nurse can determine that the client has developed respiratory alkalosis. This is indicated by the elevated pH of 7.5 and the decreased PaCO2 of 32. Respiratory alkalosis occurs when there is a hyperventilation that causes the carbon dioxide level in the blood to decrease, leading to an increase in pH.

The HCO3 level of 23 is within normal range, indicating that metabolic compensation has not occurred yet. Possible causes of respiratory alkalosis include anxiety, pain, fever, hypoxia, or overuse of mechanical ventilation.

The nurse should identify the underlying cause and provide appropriate interventions to correct the acid-base imbalance and prevent further complications. These may include reducing anxiety, providing supplemental oxygen, or adjusting mechanical ventilation settings.

Close monitoring of the client's ABG results is essential to ensure effective management of their condition.
Based on the provided ABG results (pH-7.5, PaCO2 32, HCO3 23), the nurse can determine that the client has developed respiratory alkalosis. This is because the pH level is above the normal range of 7.35-7.45, indicating alkalosis, while the PaCO2 level is below the normal range of 35-45 mmHg, suggesting a respiratory cause. The HCO3 level remains within the normal range of 22-26 mEq/L, which further supports that the primary issue is respiratory rather than metabolic.

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Answer: 1.9L

Explanation: I got you

Answer:

electrolyte

Explanation:

Saccharin, an artificial sweetener that is 3000 times sweeter than sucrose, is composed of a) C₁₄H₁₀O₆N₂S₂.

45.90% carbon, 2.73% hydrogen, 26.23% oxygen, 7.65% nitrogen, and 17.49% sulfur. is the molecular formula of saccharin.

To determine the molecular formula of saccharin, we first need to calculate the empirical formula using the given percentages of each element.

Assuming we have 100 grams of saccharin, we have:

Carbon: 45.90 g / 12.01 g/mol = 3.82 mol

Hydrogen: 2.73 g / 1.01 g/mol = 2.70 mol

Oxygen: 26.23 g / 16.00 g/mol = 1.64 mol

Nitrogen: 7.65 g / 14.01 g/mol = 0.55 mol

Sulfur: 17.49 g / 32.07 g/mol = 0.55 mol

We can divide each value by the smallest one, which is 0.55 mol, to get the following ratios:

Carbon: 3.82 / 0.55 = 6.95

Hydrogen: 2.70 / 0.55 = 4.91

Oxygen: 1.64 / 0.55 = 2.98

Nitrogen: 0.55 / 0.55 = 1

Sulfur: 0.55 / 0.55 = 1

The resulting ratios are close to whole numbers, so we can assume the empirical formula to be C₇H₅NO₃S. To find the molecular formula, we need to determine the actual molecular mass of saccharin.

The empirical formula mass of C₇H₅NO₃S is approximately 183 g/mol. The molecular mass of saccharin is known to be around 452 g/mol, so we can calculate the ratio of the molecular mass to the empirical formula mass:

452 g/mol / 183 g/mol = 2.47

This means that the molecular formula is 2.47 times the empirical formula, or:

C₇H₅NO₃S * 2.47 = C₁₇H₁₃N₂O₅S

Therefore, the molecular formula of saccharin is (a) C₁₄H₁₀O₆N₂S₂. The other options (b) CSH,ONS, (c) C&H₉O₂NS, and (d) C;H₅O₃NS are not correct.

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Answer:

2580 years

Explanation:

Since isotope Z has a half-life of 645 years, that means after 645 years, half of the original amount of isotope Z will decay. So, if 1/16 of the original amount is present, that means there have been 4 half-lives (since 2^4 = 16).

Each half-life is 645 years, so 4 half-lives is 4 x 645 = 2580 years.

Therefore, the age of the sample is 2580 years.

The molar volume of a gas at standard temperature and pressure is 22.4L

Because the particles in gases are compressible, they can be driven to enclose one another when subjected to high pressure. As a result, the volume of the gas is smaller and there is less free space. The temperature has an impact on gas volume as well. A gas expands as a result of its molecules moving more quickly when it is heated. The comparison of gas volumes must be done at standard temperature and pressure due to the variation in gas volume caused by variations in pressure and temperature. The definition of standard temperature and pressure (STP) is (273.15K) and 1atm pressure. The volume of one mole of a gas at STP is its molar volume. A mole (6.02 x 10^23 typical particles) of any gas takes up 22.4L at STP.

using ideal gas law:-

PV =nRT

P = 1.00atm

n = 1.00 mol

R = 0.0821 L atm/mol  K

T = 273 K

V = ?

V = nRT/P

V = (1.00 x 0.081 x 273)/1.00

V = 22.4 L

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Cis-trans isomerism is a type of stereoisomerism that occurs in compounds with double bonds. In cis-trans isomerism, the arrangement of atoms or groups around the double bond differs, resulting in different spatial orientations.  Option B only 1-chloropropene exhibits cis-trans isomerism.

a) Propene: Propene (CH₃CH=CH₂) does not exhibit cis-trans isomerism because it has only one substituent group (a methyl group) on each carbon atom of the double bond. Since there are no different groups on either side of the double bond, there is no possibility for cis-trans isomerism.

b) 1-Chloropropene: 1-Chloropropene (CH₃CH=CHCl) does exhibit cis-trans isomerism. In this compound, there is a chlorine atom and a hydrogen atom attached to one carbon of the double bond, while the other carbon has two hydrogen atoms attached. The arrangement of the hydrogen and chlorine atoms on opposite sides of the double bond results in the trans isomer, while their arrangement on the same side of the double bond leads to the cis isomer.

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Answer:

Melting and boiling will be seen in this example. Condensation might be seen as well. In the Phases of Water Gizmo™, you can heat up or cool down a container of water.

Explanation:

Dalton's atomic model, proposed by John Dalton in 1803, was one of the first scientific explanations of the nature of atoms. It is based on four key ideas: Atoms are indivisible and indestructible; Atoms of different elements have different atomic weights; Atoms of the same element are identical; Atoms combine in definite ratios to form compounds.

Atoms are indivisible and indestructible. This means that atoms cannot be broken down into smaller particles, and they cannot be created or destroyed.

Atoms of different elements have different atomic weights. This means that atoms of one element are different from atoms of another element based on their weight.

Atoms of the same element are identical. This means that all atoms of a given element have the same properties and characteristics.

Atoms combine in definite ratios to form compounds. This means that when atoms of different elements combine to form a compound, they do so in a specific ratio.

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Answer:

An acid and a base.

Explanation:

An acid and a base, combine to form the products salt and water

That is,

Acid + Base ----> Salt + water.

Answer:

Acid and base

The empirical formula of ascorbic acid is C6H8O6.

To calculate the empirical mass of a compound from the mass percentage of each element, the value of the molar mass of each element is used, which in this case corresponds to:

                                              \(MM_C= 12g/mol\\MM_H=1g/mol\\MM_O=16g/mol\)

From this, we consider that the compound has 100 grams, so the number of moles of each element will be equal to:

                                                   \(C = \frac{40.92}{12} = 3.41 \\H = \frac{4.58}{1}=4.58\\ O =\frac{54.50}{16}=3.41\)

Now, divide all the values ​​found by the smallest value, to find the amount present in each element:

                                            \(C = \frac{3.41}{3.41} = 1\\ H = \frac{4.58}{3.41} = 1.34\\O = \frac{3.41}{3.41} = 1\)

As you can see, the value of moles of hydrogen resulted in a decimal number, so it is necessary to multiply all values ​​​​by a number in common until the three meet as integers:

                                          \(C = 1 \times 6 = 6\\H = 1.34 \times 6 = 8\\O = 6 \times 6 = 6\)

So, the empirical formula of ascorbic acid is C6H8O6.

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Answer:

to help others

Explanation:

he was blessed so he wanted to give back to others. please give brainliest, have a great day/night

Answer:

correct :)

Explanation:

the person is right

The number of molecules of SF₆ present in 25 g of SF₆ will be 1.03 x 10²³ .

Molar mass = 146.06 g/mol

Number of mole in 25 gm of SF₆ = 25 / 146.06 = 0.171

Now, number of molecules = 0.171 mole x 6.02 x 10²³ molecules

                                               = 1.03 x 10²³ molecules of SF₆

Hence, the number of molecules of SF₆ present in 25 g of SF₆ will be 1.03 x 10²³ .

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Each data point corresponds to a particular salt solution concentration and solubility value. To display the trend or pattern of the solubility values as the concentration of the salt solution grows or drops, these points can be plotted on the graph and then connected by a line.

One may quickly determine if the solubility grows or decreases as the salt solution's concentration varies by looking at the line graph. The solubility of the salt at various concentrations can be inferred or predicted using this information.

As a line graph may demonstrate the trend or pattern of each salt's solubility in water at 22°C, Rob should use one to display his data.

The salt solution concentration can be shown on the x-axis, and the related solubility values can be shown on the y-axis.

The data points will be connected by a line graph, which will depict the correlation between solubility and concentration.

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A solution is a homogeneous mixture of a compound dissolved into a fluid. It consists of a solute, which is the compound being dissolved, and a solvent, which is the fluid into which the compound dissolves. The solute is typically present in smaller amounts compared to the solvent.

Solutions can be formed when a solute is added to a solvent and the solute particles disperse evenly throughout the solvent particles. The extent to which a compound dissolves into a specified fluid is known as its solubility. Solubility depends on factors such as temperature, pressure, and the nature of the compound and the solvent. For example, when sugar (solute) is added to water (solvent), it dissolves to form a sugar solution.

Similarly, when salt (solute) is added to water (solvent), it dissolves to form a salt solution. Overall, a solution is a mixture where the solute particles are evenly dispersed in the solvent particles.

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Answer:

the answer is salmonella