How many grams of water will form if 10. 54 g h2 react with 95. 10 g o2?.

A) F2 and C2H5OH (Heterogeneous mixture)B) H2O and CH3OH (Homogeneous mixture)C) LiCl and C10H20 (Heterogeneous mixture)D) CH4 and C2H5OH (Heterogeneous mixture).

The pair of substances that are most likely to form a homogeneous solution is B. H2O and CH3OH. A homogeneous mixture is one in which the components are evenly distributed throughout the mixture. These types of solutions have uniform properties and the same composition throughout.A heterogeneous mixture is one in which the components are not evenly distributed. This means that the mixture has distinct regions or phases that are visibly different from one another. The following are the most likely pairs of substances to form a homogeneous solution:A) F2 and C2H5OH (Heterogeneous mixture)B) H2O and CH3OH (Homogeneous mixture)C) LiCl and C10H20 (Heterogeneous mixture)D) CH4 and C2H5OH (Heterogeneous mixture).

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The 85th percentile of blood pressure readings is approximately 137.64. a. To calculate the z-score for a blood pressure reading of 140, we can use the formula:

z = (x - μ) / σ

where x is the value (140 in this case), μ is the mean (121), and σ is the standard deviation (16).

Substituting the values into the formula:

z = (140 - 121) / 16

z ≈ 1.19 (rounded to two decimal places)

b. To find the proportion of Canadians with high blood pressure, we need to calculate the area under the normal distribution curve for values above 140. This can be done by finding the cumulative probability using the z-score.

Using a standard normal distribution table or a calculator, we can find that the cumulative probability corresponding to a z-score of 1.19 is approximately 0.881.

Therefore, the proportion of Canadians with high blood pressure is approximately 0.881 (rounded to four decimal places).

c. To find the proportion of Canadians with systolic blood pressure in the range from 100 to 140, we need to calculate the area under the normal distribution curve between these two values.

Using the z-scores corresponding to 100 and 140, we can find the cumulative probabilities for each value. The cumulative probability for a z-score of -1.25 (corresponding to 100) is approximately 0.105, and the cumulative probability for a z-score of 1.19 (corresponding to 140) is approximately 0.881 (as calculated in part b).

The proportion with systolic blood pressure between 100 and 140 is the difference between these two probabilities:

Proportion = 0.881 - 0.105 ≈ 0.776 (rounded to four decimal places)

d. The 85th percentile represents the value below which 85% of the blood pressure readings fall. To find the 85th percentile, we need to determine the z-score that corresponds to an area of 0.85 under the normal distribution curve.

Using a standard normal distribution table or a calculator, we can find that the z-score corresponding to an area of 0.85 is approximately 1.04.

To find the actual blood pressure reading at the 85th percentile, we can use the z-score formula:

x = μ + (z * σ)

Substituting the values:

x = 121 + (1.04 * 16)

x ≈ 137.64

Therefore, the 85th percentile of blood pressure readings is approximately 137.64.

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(a) Diagram of characteristic X-ray generation in an atom:

[Note: Due to the limitations of text-based communication, I'm unable to provide a visual diagram. However, I'll explain the process in the following text.]

(b) Explanation of characteristic X-ray generation:

When high-energy electrons collide with an atom, they can knock out inner shell electrons, creating vacancies. Outer shell electrons then transition to fill these vacancies, releasing energy in the form of X-rays. These X-rays are called characteristic X-rays and have specific energies corresponding to the energy differences between different electron shells.

(c) X-ray production in an X-ray tube:

An X-ray tube consists of a cathode and an anode enclosed in a vacuum. The cathode emits a stream of high-speed electrons through a process called thermionic emission. These electrons are accelerated by a high voltage and directed towards the anode. As the fast-moving electrons collide with the anode, X-rays are produced through two main processes: bremsstrahlung radiation (braking radiation) and characteristic X-ray emission.

In bremsstrahlung radiation, the electrons are decelerated by the positively charged anode, causing them to emit X-rays with a continuous spectrum of energies. Characteristic X-ray emission occurs when the high-speed electrons displace inner shell electrons in the anode, leading to the generation of characteristic X-rays specific to the anode material.

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The volume of the gas at 18.00 ∘C and 0.992 atm is 4.86 L.

To solve this problem, we will use the ideal gas law, which states that PV = nRT, where P is the pressure, V is the volume, n is the number of moles, R is the gas constant, and T is the temperature in Kelvin.

First, we need to convert the initial temperature to Kelvin by adding 273.15. Therefore, the initial temperature is 287.35 K.

Next, we can calculate the number of moles of gas using the given information. We can rearrange the ideal gas law to solve for n: n = (PV)/(RT). Plugging in the values, we get:

n = (1.50 atm)(3.55 L) / [(0.08206 L·atm/mol·K) (287.35 K)] = 0.194 mol

Now we can use the ideal gas law again to find the final volume. We can rearrange the ideal gas law to solve for V:

V = (nRT)/P

First, we need to convert the final temperature to Kelvin by adding 273.15. Therefore, the final temperature is 291.15 K.

Plugging in the values, we get:

V = (0.194 mol)(0.08206 L·atm/mol·K)(291.15 K) / 0.992 atm = 4.86 L

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Answer:

180 g

Explanation:

It can be said that water will take more heat to raise its temperature by 1°C than copper. Details about specific heat can be found below.

Specific heat capacity of a substance can be defined as the amount of heat (J) absorbed per unit mass (kg) of the material when its temperature increases 1 K or 1 °C.

According to this question, water has a specific heat of 4.184 J/g°C while Copper metal has a specific heat of 0.385 J/g°C. This shows that water has a higher specific heat.

Therefore, it can be said that water will take more heat to raise its temperature by 1°C than copper metal.

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Answer:

Untreated water from rivers, lakes, ponds, springs, or streams is likely to contain unsafe levels of infectious microorganisms, and drinking it may cause illness.

Explanation:

The correct options for naming an ionic compound are:

The cation is named first and the anion second.

For a monatomic cation, the element name is unchanged.

For a monatomic anion, the element name is changed to end in -ide.

When naming an ionic compound, the cation (positive ion) is always named first, followed by the anion (negative ion). For monatomic cations, the element name remains the same. For example, Na^+ is simply called sodium.

On the other hand, for monatomic anions, the element name is modified to end in -ide. For example, Cl^- is named chloride. Greek prefixes are not used to indicate the number of atoms of a particular element present in ionic compounds.

Therefore, the correct options are: the cation is named first and the anion second, and for monatomic anions, the element name is changed to end in -ide.

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Answer:

Static Electricity

Explanation:

Answer:

static electricity

Explanation:

Answer:

Blood and water

Explanation:

Conductivity level probes can only be used with conductive liquids.

a) True

The conductivity probe is the level of point measuring system consist of two or more probes or electrodes or electrodes and vessel ,the material in the vessel completes the circuit when the level will rise in the vessel. A probe is the insertable device which have the sensor. the conductive liquids are that are the solution of the acids , the bases and the salts. sugar solution and the distilled water are poor conductors.

Thus, it is true that , Conductivity level probes can only be used with conductive liquids.

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Answer:

C. NH₄Cl

Explanation:

The compound with the element ratio 1 : 4 : 1 from the given choices is NH₄Cl.

An element is a pure substance made up of distinct number of atoms. Elements are unique and are different from other elements because of the nature of their atoms.

We often delineate an element using chemical symbols.

   In the compound NH₄Cl;

There are 3 elements:

           Number of atoms

N                      1

H                      4

Cl                     1

Answer:

Magnets are used to make a tight seal on the doors to refrigerators and freezers. They power speakers in stereos, earphones, and televisions. Magnets are used to store data in computers, and are important in scanning machines called MRIs (magnetic resonance imagers), which doctors use to look inside people's bodies.

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Answer:

The volume of the gas is approximately 4.41 liters

Explanation:

The details of the data of the Neon gas are;

The number of moles of Neon gas present, n = 11.6 moles

The temperature of the sample of Neon gas, T = 120 K

The pressure of the sample of the Neon gas, P = 25.6 atm

By the ideal gas equation, we have;

P·V = n·R·T

Where;

R = The universal gal constant = 0.08205 L·atm·mol⁻¹·K⁻¹

Therefore, we get;

V = n·R·T/P

Which gives;

V = 11.6 moles × 0.08205 L·atm·mol⁻¹·K⁻¹ × 120 K/(25.9 atm) ≈ 4.4097915 L

The volume of the gas, V ≈ 4.41 L.

Answer:

Within the visible spectrum, red light has the longest wavelength.

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Explanation:

Answer:

1. Crush the sugar into powder.

2. Heat the water.

3. Dissolve it by stirring continuously

Explanation:

1. Crushing the sugar into powder increases surface area. So it increases the changes of dissolving

2. Heating the water increases the capacity of water to dissolve sugar.

3. Stirring continuously increases randomness of particles so eases mixing up thus increasing dissolving tendency.

Answer:

Both are different.

Explanation:

Both rocks are different from one another because both formed from different types of rocks. Rock A was formed from small pieces of rock while on the other hand, Rock B was formed from liquid  rock so they both have different sources of rocks from which they were formed. Forming at the same time does not show that they are similar to each other, it is their source which decides that they are similar or different.

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NMR signals may consist of a single peak, be split into several peaks, which is known as multiplicity.

The number of peaks of NMR and their relative intensities provide information about the chemical environment of the nuclei being observed. Multiplicity arises from spin-spin coupling between the observed nucleus and one or more neighboring nuclei. This coupling occurs because the magnetic field generated by the neighboring nuclei affects the local magnetic field experienced by the observed nucleus. The pattern of multiplicity can provide valuable information about the number and types of neighboring nuclei and the nature of the chemical bonds between them.

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Basalt is 65.5 million years ago to the present. Limestone with fossil was about 500 million years ago. Sandstone with trilobite is between 525 and 505 million years old.

A quantifiable measurement of how old something is or how long ago it occurred, expressed typically in terms of years, is called an absolute age in geology.

Radiometric techniques are used the most often in geology to determine absolute ages.

Basalt was formed 65.5 million years ago. Fossilized limestone dates back to roughly 500 million years. Trilobites are found in sandstone that is between 525 and 505 million years old.

In the Carboniferous epoch, about 340 million years ago, the earliest amniotes diverged from their amphibian predecessors. Soon after the first amniotes emerged, they split into two major lines.

Thus, these are the probable ages of the given rocks.

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C12H22O11 (s) + 12O2 (g) ⇒ 12CO2 (g) + 11H2O (g)

Answer: I believe you are talking about the world's first recorded nuclear explosion that took place on the plains of the Jornada del Muerto Dessert.

Explanation: It is to be noted that the Trinity site is still considered to be radioactive, and Trinitite which is a green glass-like substance is found abundantly in the area. Trinity was an atmospheric test conducted by the U.S. Army on July 16th of 1945. The site was chosen because of its isolated, flat grounded, non-windy lands. This experiment was so tightly gatekept that not even the military policemen whom rode with it knew of its contents.

Answer:

An open circuit is one where the continuity has been broken by an interruption in the path for current to flow. A closed circuit is one that is complete, with good continuity throughout. A device designed to open or close a circuit under controlled conditions is called a switch.

Answer:

0.225=947

0.216=x

0.225x=947×0.216

0.225x=204.552

x=204.552/0.225

x=909.12

Answer:

because the first one sand is rough it is because sand is made from crushed shells and rocks and the parking lot is paved by dark asphalt means it is rough but hard and easy to step but the sand can hurt your feet beacuse sometimes crushed shells are pointed

Explanation:

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Answer

The sandy beach is a light color of sand and it reflects the light causing less heat absorption.  The dark asphalt does not reflect the light and heat, it absorbs and stores the heat.

Explanation:

Answer:

D. The kinetic energy is greater after a substance changes from a

solid to a liquid

Explanation:

During a phase change from solid to liquid, the particles making up the mobile becomes more mobile and as a result there is an increase in kinetic energy of the system.

Answer:

D. The kinetic energy is greater after a substance changes from a solid to a liquid

Explanation:

Two kinds of carbonyl acceptor structures in addition to benzoate ester are dialkyl carbonate and benzophenone.

Grignard reaction is an organometallic organic chemical reaction in which alkyl, allyl, vinyl or aryl-magnesium halides who are called as Grignard reagent are added to the carbonyl group in aldehyde or ketone. This reaction is important for the formation of carbon-carbon bonds. or basically they are mainly used for the formation of carbonyl compounds.

Triphenylmethanol can be synthesized by Grignard reaction using 3 different starting materials and also the different number of equivalents of Grignard reagent.

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