explain why most metals and alloys are malleable and ductile while ionic crystals are not. because of the ability of the atoms to roll over each other into new positions without breaking the metallic bond.

Answer: I believe the 1st and 3rd reactions are better obtained through reference sources and the 2nd and 4th are easiest and safest to measure in the laboratory.

Explanation:

I am also working on this Pre-lab right now, and I looked back at the first question to help get my answer. In the first question (a), it is noted that ammonia gas and gaseous hydrochloric acid are both potentially dangerous in gaseous form. I saw that both the 1st and 3rd reactions contained noxious gases (I knew this because there was a (g) in both of these reactions). Using the knowledge from the first question that the noxious gases were potentially dangerous, I assumed that those reactions were the ones that are better obtained through the reference sources. The 2nd and 4th reactions did not contain any noxious gases, so I assumed those ones were easiest and safest to measure in the laboratory. Hope this helps!

The number of atoms N in 0.755 mol of N₂ : 9.09 x 10²³

The mole is the number of particles(molecules, atoms, ions) contained in a substance  

1 mol = 6.02.10²³ particles

Can be formulated

N=n x No

N = number of particles

n = mol

No = Avogadro's = 6.02.10²³

moles of N in 0.755 mol N₂ :

\(\tt 2\times 0.755=1.51~moles\)

The number of atoms N :

\(\tt 1.51\times 6.02\times 10^{23}=9.09\times 10^{23}~atoms\)

Answer:

Explanation:

The new volume can be found by using the formula for Boyle's law which is

\(P_1V_1 = P_2V_2\)

Since we're finding the new volume

\(V_2 = \frac{P_1V_1}{P_2} \\\)

We have

\(V_2 = \frac{100 \times 740}{780} = \frac{74000}{780} \\ = 94.8717...\)

We have the final answer as

Hope this helps you

Answer:

A.

Explanation:

Answer:

Explanation:

Some substances are poor conductors because they do not possess freely moving ions but they conduct electricity in their aqeous solution beacuse their ions become free to move when dissolved in water. Common example of such substances is NaCl which is commnly called table salt

A. It takes 1.371 nanoseconds for light to travel 4.5 feet,b. It takes 13.028 milliseconds for light to travel 2462 miles, c. It takes approximately 9.145 hours for light to travel 4.5 billion kilometers.

To calculate the time it takes for light to travel a certain distance, we can use the speed of light as a constant. The speed of light in a vacuum is approximately 299,792,458 meters per second (m/s).

a. To find the time in nanoseconds, we first convert 4.5 feet to meters:

4.5 feet = 1.3716 meters

Then we can use the speed of light to calculate the time:

time = distance / speed of light = 1.3716 meters / 299,792,458 m/s = 4.574 nanoseconds (rounded to three decimal places).

b. To find the time in milliseconds, we convert 2462 miles to meters:

2462 miles = 3,962,597.73 meters

Then we divide the distance by the speed of light to get the time:

time = distance / speed of light = 3,962,597.73 meters / 299,792,458 m/s = 0.013028 seconds.

Finally, we convert seconds to milliseconds by multiplying by 1000:

0.013028 seconds * 1000 = 13.028 milliseconds (rounded to three decimal places).

c. To find the time in hours, we convert 4.5 billion kilometers to meters:

4.5 billion kilometers = 4.5 x 10⁹ kilometers = 4.5 x 10¹² meters

Then we divide the distance by the speed of light to get the time:

time = distance / speed of light = (4.5 x 10¹² meters) / 299,792,458 m/s

Calculating the result gives us:

time ≈ 1.502 x 10⁷ seconds

Finally, we convert seconds to hours by dividing by 3600:

time ≈ (1.502 x 10⁷ seconds) / 3600

Simplifying the expression gives us:

time ≈ 4.173 hours (rounded to three decimal places)

Learn more about speed of light here:

https://brainly.com/question/21404285

#SPJ4

Branches of Chemistry Traditionally, the five main branches of chemistry are organic chemistry, inorganic chemistry, analytical chemistry, physical chemistry, and biochemistry. However, sometimes biochemistry is considered a subdiscipline of organic chemistry.

There can be several reasons why you may get different readings even if the light source remains the same. One possible reason is the presence of external factors that can influence the measurements.

For example, variations in the surrounding environment such as reflections, shadows, or the presence of other objects can affect the amount of light reaching the sensor or detector.

Another reason could be the sensitivity and calibration of the measuring device itself. Different sensors or detectors may have variations in their sensitivity, response curves, or calibration settings, leading to different readings even when exposed to the same light source.

Additionally, factors such as distance and angle of measurement can also play a role. As the distance between the light source and the measuring device changes, the intensity of light reaching the detector can diminish, resulting in different readings. Similarly, variations in the angle of measurement can affect the perceived intensity of light.

It is essential to consider these factors and ensure consistent experimental conditions, proper calibration, and careful handling of measurement devices to minimize discrepancies and obtain reliable readings.

For more such questions on light source

https://brainly.com/question/30701068

#SPJ8

An exothermic process releases heat causing the temperature of the immediate surroundings to rise in endothermic process absorbs heat and cools the surroundings so exothermic process releases heat while an endothermic process absorbs heat

Answer:

3

Explanation:

Protons and electrons are always the same.

Hope this is correct and helpful

HAVE A GOOD DAY!

Answer:

Beryllium metal is relatively unreactive at room temperature, particularly in its massive form. Magnesium is more electropositive than the amphoteric beryllium and reacts more readily with most of the nonmetals.

Explanation:

When it comes to the ease with which a positive ion or cation of the metal can form, beryllium is less reactive than magnesium.

The chemical element magnesium has the atomic number 12 and the letter Mg as its symbol. It is a glossy, gray metal with a low melting point, high chemical reactivity, and a low density. It only naturally occurs in mixtures with other elements, just like the other alkaline earth metals, and it almost always has an oxidation state of +2.

At room temperature, beryllium metal is largely non-reactive, especially in its massive form. Magnesium interacts more quickly with the majority of nonmetals because it is more electropositive than amphoteric beryllium.

Due to the electron being removed being in the 3-level rather than the 2-level and being further away from the nucleus's attraction, the first ionization energy of magnesium is lower than that of beryllium.

Thus, When it comes to the ease with which a positive ion or cation of the metal can form, beryllium is less reactive than magnesium.

To learn more about magnesium, follow the link;

https://brainly.com/question/1533548

#SPJ2

The wavelength of a 1.32 x 10-⁶ eV wave is 0.939m or 9.39 × 10⁸nm.

The wavelength of a wave can be calculated using the following formula:

wavelength = speed ÷ frequency

However, the frequency of the wave needs to be calculated first using the formula as follows:

E = hf

Where;

1 electronvolt = 1.602 × 10-19 joule

Hence, 1.32 × 10-⁶ eV is equivalent to 2.11487 × 10-²⁵J.

2.11487 × 10-²⁵J = 6.626 × 10-³⁴ × f

f = 2.11487 × 10-²⁵ ÷ 6.626 × 10-³⁴

f = 3.2 × 10⁸Hz

Wavelength = 3 × 10⁸ ÷ 3.2 × 10⁸

Wavelength = 0.9375 × 10⁰

Wavelength = 0.94m

Therefore, the wavelength of a 1.32 x 10-⁶ eV wave is 0.939m.

Learn more about wavelength at: https://brainly.com/question/13533093

#SPJ1

Answer:

8 metal are there in modern periodic table

According to Raoult's Law, the aqueous solution with the lowest vapor pressure is  isucrose = 0.10

use the concept of Raoult's Law, which states that the vapor pressure of a solution is directly proportional to the mole fraction of the solvent. In other words, the higher the mole fraction of the solute, the lower the vapor pressure of the solution.

Comparing the given mole fractions of solutes:
a. Ïglucose = 0.15
b. Ïsucrose = 0.20
c. Ïglucose = 0.25
d. Ïsucrose = 0.10


Therefore, the answer would be option b. Ïsucrose = 0.20, as sucrose has a larger molecular weight compared to glucose, resulting in a higher concentration of solute particles in the solution. It is important to note that this is based on the assumption that all solutions have the same temperature and pressure.

Learn more about Raoult's Law

brainly.com/question/28304759

#SPJ11

"The third glass is the most saturated or concentrated among the three." In this scenario, the concentration or saturation of a solution refers to the amount of solute (sugar) dissolved in a given amount of solvent (water). The glass with the highest amount of sugar would be the most saturated or concentrated.

Comparing the three glasses:

The first glass contains 2 teaspoons of sugar.

The second glass contains 4 teaspoons of sugar.

The third glass contains 6 teaspoons of sugar.

Based on this, we can see that the third glass, which has 6 teaspoons of sugar, has the highest amount of sugar dissolved in the water. Therefore, the third glass is the most saturated or concentrated among the three.

To know more about the solution visit:

https://brainly.com/question/25326161

#SPJ11

Azoisobutyronitrile(AIBN) is a radical indicator.

(The structure is shown in the image below.)

A highly popular method for creating polymers is radical polymerization. There are several fairly dependable techniques for conducting radical polymerization, which produces high molecular weight polymers. A common instance is the production of polystyrene when the radical initiator azoisobutyronitrile is present (AIBN).

The compound decomposes when AIBN is employed as an initiator in part due to the strong N-N triple bond and in part due to the very stable radical that is produced. This radical is delocalized and tertiary. Radical polymerizations may also make use of additional initiators.

To view similar questions based on AIBN, refer to:

https://brainly.com/question/14505266

#SPJ4

When magnesium loses electrons to become an ion, it forms a cation. Option B is correct.

Magnesium is a chemical element having symbol Mg and its atomic number will be 12. It is a shiny gray metal having a low density, low melting point as well as high chemical reactivity

Magnesium loses electrons to become an ion, it forms a cation which is a positively charged ion. The formation of a cation occurs when an atom loses one or more electrons, resulting in an overall positive charge.

In the case of magnesium, it would lose two electrons to become a positively charged magnesium ion, written as Mg²⁺. This process occurs because the electron configuration of the magnesium atom becomes unstable when it loses electrons, resulting in an ion with a positive charge.

To know more about cation here

https://brainly.com/question/28710898

#SPJ4

Answer:

False

Explanation:

It is impossibke to know the exact location of an electron.

Answer:

what the freak is thisnenejehey

Answer:

atoms are everything and they are use to create anything and everything

Answer:

Atoms are composed of subatomic particles that are the building blocks of life

Answer:

B. 45kg

Explanation:

3 x 15= 45

Answer:

High and low tides are caused by the Moon. The Moon's gravitational pull generates something called the tidal force. The tidal force causes Earth—and its water—to bulge out on the side closest to the Moon and the side farthest from the Moon. These bulges of water are high tides.

Explanation:

The greatest difference between high and low tide is around New Moon and Full Moon. During these Moon phases, the solar tide coincides with the lunar tide because the Sun and the Moon are aligned with Earth, and their gravitational forces combine to pull the ocean's water in the same direction.

The manipulated variable in the global warming experiment is the air temperature.

The correct option is B.

Anything that is changeable is referred to as a variable. In other words, it's anything that can be changed, taken into account, or quantified in an experiment.

There are three types of variables in an experiment:

In the given experiment, the manipulated variable was the change in the location.

Learn more about independent variable at: https://brainly.com/question/82796

#SPJ1

The total pressure in the flask in atm would be 6.4 atm.

The law guiding the pressure of a mixture of gases was formulated by Dalton. It is known as dalton's law of partial pressure of gases. According to this law, the total pressure exerted by a mixture of gases in a container is the sum of the individual partial pressure of the gases.

The law can be mathematically expressed as:

\(P_{total}\) = \(P_1 + p_2 + ...... P_n\)

Where P is the partial pressure of the individual gases.

In this case, \(P_H_2\) = 3.6 atm and \(P_O_2\) = 1.8 atm

\(P_{total}\) = 3.6 + 2.8

        = 6.4 atm

In other words, the total pressure in the sealed container would be 6.4 atm.

More on the partial pressure of gases can be found here: https://brainly.com/question/30235822

#SPJ1

Answer:

5.4 is the correct answer

If a body of water has low levels of dissolved oxygen, it can be concluded that there is a lack of oxygen available for aquatic organisms to breathe.

This can lead to negative impacts on the ecosystem and can cause harm to fish and other aquatic life that rely on oxygen to survive. Additionally, low levels of dissolved oxygen can indicate poor water quality and may be a sign of pollution or other environmental issues in the area.

Low dissolved oxygen levels can lead to reduced biodiversity, as some organisms may not survive in such conditions, and can also result in the growth of anaerobic organisms, which could further deteriorate water quality.

To know more about oxygen visit :-

https://brainly.com/question/26073928

#SPJ11

Answer:

Egg is heterogeneous.

Ranch Dressing is heterogeneous

Windex is homogeneous.

Answer:

germanium (Ge)

Explanation:

both belong to the same group

Answer:

A. germanium (Ge)

Answer:

the outer core

Answer:

The outer core

Answer:

H—F. Fluorine Explanation:

b. Hydrogen to move into the cell and exchange with potassium

Vomiting-induced metabolic alkalosis is a type of acid-base imbalance that occurs when excessive vomiting leads to a loss of stomach acid (hydrochloric acid),

What is Metabolic?

Metabolic refers to the biochemical processes that occur within living organisms to maintain life, including the production, transformation, and utilization of energy and the synthesis and breakdown of molecules. These processes are essential for the proper functioning of cells, tissues, and organs in an organism.

The loss of stomach acid during vomiting results in a decrease in hydrogen ions (H+) in the blood. As a compensatory mechanism, hydrogen ions (H+) are taken up by cells in exchange for potassium ions (K+), which are released into the bloodstream.

Learn more about Metabolic from the given link

https://brainly.com/question/14422941

#SPJ1