Explain why Na, Mg, and Al are good conductors of electricity?

Answer:

rabbit is one of the sweet animal

in the world

According to the Hazard Communication standard, all hazardous chemicals must be labeled with specified elements including pictograms to alert the users of the chemical hazards.

A pictogram can be described as a is a graphic symbol that conveys its meaning through its pictorial resemblance to a physical object. Pictographs are commonly used in writing and graphic systems in which the characters are in extent pictorial in appearance. A pictogram can be used in subjects such as tourism, leisure, and geography.

Pictography can be a form of writing which uses representational, pictorial drawings to cuneiform and hieroglyphic writing, which uses drawings as phonetic letters. Some pictograms, such as Hazards pictograms can play as an element of formal languages.

Sets of pictographs are the laundry symbols utilized on clothing tags and the chemical hazard symbols which are standardized by the GHS system.

Learn more about pictograms, here:

https://brainly.com/question/24481088

#SPJ1

The spectra from the atoms in the atmosphere of a neutron star are very different from spectra observed elsewhere because of the extreme conditions present on the surface of a neutron star.

Neutron stars are incredibly dense and have strong magnetic fields, with surface gravity that can be billions of times stronger than that of Earth. This results in an environment where atomic nuclei are compressed together to form a dense, solid crust that is tens of trillions of times stronger than steel, and where the electrons of atoms are tightly bound to their nuclei.

Under these conditions, the electrons of the atoms in the neutron star's atmosphere are squeezed together and forced into high-energy states, causing the atoms to emit radiation in a way that is very different from what we observe in normal stars or in laboratory experiments. The strong magnetic fields present on the surface of the neutron star also influence the behavior of charged particles in the atmosphere, further modifying the spectra.

The resulting spectra from neutron stars are often characterized by a series of narrow lines and spikes that are difficult to interpret using standard spectroscopic techniques. However, by analyzing the unique spectral signatures of neutron stars, astronomers are able to learn more about the extreme physics of these objects, such as the properties of their dense interiors and the dynamics of their powerful magnetic fields.

Learn more about atmosphere

https://brainly.com/question/26767532

#SPJ4

Answer:

Explanation:

A perfect diamond is a single molecule made of carbon atoms.

DNA is a super long molecule that has information uniquely describing every human being.

When two or more atoms chemically bond together, they form a molecule.

They are very small in size.

They have space between them.

They are in constant random motion.

molecules move when Particles move rapidly in all directions but collide with each other more frequently than in gases due to shorter distances between particles.

In 1926, French physicist Jean Perrin received the Nobel Prize in physics for proving, conclusively, the existence of molecules.

Molecules can exist in free state because they are very stable.

The smallest particle of a compound capable of existing on its own is a Molecule-not a atom.

The first metal to be extracted from its ore through smelting was copper. Smelting refers to the method of heating ores to extract their metals.

The first evidence of smelting in the archaeological record is from a site in Serbia that dates back to the 5th millennium BCE. During this period, the technology was used to extract copper from malachite and azurite, two copper ores. Copper smelting was a significant development because it was the first time humans had access to metal. The Bronze Age, which followed the Copper Age, saw the emergence of bronze, an alloy of copper and tin, as the most popular metal.

Bronze is much harder than pure copper and is thus superior for making tools and weapons. Bronze production ushered in a new era of human development because it allowed for the creation of more effective farming and hunting tools, as well as better weaponry for warfare.In conclusion, copper was the first metal to be freed from its ore through smelting, and it was a significant technological advance because it allowed humans to access metal for the first time.

To know more about Smelting  visit:-

https://brainly.com/question/28971800

#SPJ11

In order of conductivity, calcium bromide, potassium bromide (KBr), benzoic acid, and sugar are the least conductive materials. Benzonic acid, Ca2Br KBr C6H5COOH, and C6H12O6 (sugar).

You can test a material by inserting something between the wire's two free ends. Put the free end of the wire on one side of the object and the other end on the other side. The substance is conductive if the bulb illuminates; otherwise, it is an insulator.

The opposite of resistivity, which is defined as resistance times cross-section area divided by length, is conductivity. Consequently, measure the length and resistance using a micro-ohmmeter.

To know mor about conductivity visit:-

https://brainly.com/question/21496559

#SPJ4

Answer: The limiting reactant is Na

Explanation:

Among the compounds you listed, only Al2O3 (aluminum oxide) will form a unit cell similar to K3P (potassium phosphide).

K3P is an ionic compound composed of potassium cations (K+) and phosphide anions (P3-). It crystallizes in a cubic unit cell with a specific arrangement of ions.

Al2O3, also known as alumina, is another ionic compound that forms a crystal lattice structure. It consists of aluminum cations (Al3+) and oxide anions (O2-). Al2O3 can crystallize in different crystal structures, such as the corundum structure or the spinel structure, depending on the conditions.

The other compounds you listed (Na3N, Li2S, Ki, CaBr2) do not have the same ionic composition or structure as K3P. Therefore, their unit cells would be different from K3P.

To learn more about aluminum visit;

https://brainly.com/question/28989771

#SPJ11

Answer:

See note under explanation

Explanation:

That the particles have mostly non-polar structures or, have a very low degree of electronegativity (i.e. very low or no attractive interactions) so that particle - particle interaction favors the gas phase when not in an equilibrium based environment. That is, a closed container of liquid were liquid phase is in equilibrium with gas phase. However, when not in a closed container; i.e., spilled, particles evaporate rapidly moving into the gas phase from liquid phase.

Hope this helps. :-)

The molecule of the liquid which quickly evaporates means that it has a non

polar structure.

Polar substances have the presence of regions of positive and negative

charges in them which makes them more stable. Non polar compounds on

other hand have charges distributed in a spherically symmetric manner.

Non polar substances are less stable and have very low boiling points and

is the reason  the liquid quickly evaporated when it was spilled.

Read more on https://brainly.com/question/24729099

A nephron is the basic functional unit of the kidney that removes waste and additional substances from the blood. It is a long, convoluted tube that extends from the Bowman's capsule to the collecting duct. The correct option in the given question is (a) Proximal convoluted tubule.

The function of the nephron is to filter blood and to create urine. The following are the different regions of a nephron:

Water is actively transported in the proximal convoluted tubule. In this region, water and solutes are reabsorbed from the tubular lumen back into the peritubular capillary network. Water is also passively reabsorbed in the descending limb of the nephron loop. Hence, a is the correct option.

You can learn more about nephron at: rainly.com/question/12307837

#SPJ11

Water is actively transported in the proximal convoluted tubule. This statement is true regarding the transport of water and the region of the nephron.  Approximately 65 percent of the filtrate is reabsorbed in the proximal convoluted tubule. Therefore, the correct option among the given choices is (a) Proximal convoluted tubule.

A nephron is water actively transported. It is a part of the kidney, specifically the renal tubule, that helps in filtering blood, reabsorbing essential elements, and excreting the waste in the form of urine.

Regions of the nephron include the following:

Proximal convoluted tubule (PCT)

Loop of Henle

Distal convoluted tubule (DCT)

Collecting duct

In the proximal convoluted tubule, water is reabsorbed by osmosis. Na+ ions and other substances are reabsorbed actively, making the environment of the filtrate hypotonic to blood. As a result, water moves passively from the proximal convoluted tubule to the capillaries. Approximately 65 percent of the filtrate is reabsorbed in the proximal convoluted tubule. Therefore, the correct option among the given choices is (a) Proximal convoluted tubule.

To know more about proximal convoluted tubule visit:

https://brainly.com/question/10033530

#SPJ11

Answer:

inhibits glycolysis

Explanation:

In a specimen collected for plasma glucose analysis, sodium fluoride is commonly used as a preservative and inhibitor of glycolysis.

Sodium fluoride prevents the breakdown of glucose in the sample, thereby stabilizing the glucose concentration and preventing falsely low results. This is particularly important for samples that will be analyzed for glucose over a period of time. By inhibiting glycolysis, sodium fluoride can help ensure accurate and reliable glucose measurements in clinical settings.

Learn more about glycolysis at https://brainly.com/question/1966268

#SPJ11

The molality of a solution prepared by dissolving 13.3 g of kcl in 750.0 ml of water is 0.23 moles per kilogram.

What is molality?

The molality of a solution is the number of moles of solute present in per kilogram of the solvent is called the molality of the solution and cannot be affected by temperature.

Molality = weight / mass × 1000/ volume if water in ml.

mass of KCl = 74.55

substituting the value in the formula,

molality = 13.3 g / 74.55 × 1000/ 750

molality = 0.23 moles per kilogram.

Therefore, 0.23 moles per kilogram is the molality of a solution prepared by dissolving 13.3 g of KCL in 750.0 ml of water.

Learn more about molality, here:

https://brainly.com/question/26921570

#SPJ4

The pH of the solution when 0.003 moles of HCl is added to a 30.00 ml buffer solution that contains 0.015 moles of HCOOH and 0.015 moles of NaHCOO is 3.02.

A buffer solution is a solution that resists changes in pH when small amounts of acids or bases are added to it. When acids or bases are added to it, the buffer solution can either accept or donate protons, limiting any increase or decrease in pH. Buffer solutions are usually made by mixing a weak acid and its corresponding salt or a weak base and its corresponding salt in a specific proportion to achieve a specific pH.

The equation for the dissociation of formic acid (HCOOH) is:

HCOOH(aq) + H₂O(l) ⇌ H₃O+(aq) + HCOO-(aq)

The Ka expression for formic acid is:

Ka = [H₃O+] [HCOO-]/[HCOOH]

A buffer solution consists of a weak acid (HCOOH) and its corresponding salt (NaHCOO). When the salt dissolves in water, it hydrolyzes to form Na+ and HCOO-. The Na+ ions are spectator ions and do not take part in the equilibrium reaction.

The hydrolysis reaction is:

HCOO-(aq) + H₂O(l) ⇌ H₃O+(aq) + HCOO-(aq)

The equilibrium constant expression for this reaction is:

Kb = [HCOO-][H₃O+]/[HCOOH]

Since Ka × Kb = Kw,

where

Kw is the ion product constant for water,

Kw = [H₃O+][OH-] = 1.0 × 10-14

Ka × Kb = [H₃O+][HCOO-]/[HCOOH][HCOO-][H₃O+] = Ka × [HCOOH][HCOO-][H₃O+] = 1.0 × 10-14[H₃O+] = [HCOO-][HCOOH]/Ka[H₃O+] = 10^-3.52 = 2.51 × 10^-4

pH = -log[H₃O+]

pH = -log(2.51 × 10⁻⁴) = 3.02

Hence, the pH of the solution when 0.003 moles of HCl is added to a 30.00 ml buffer solution that contains 0.015 moles of HCOOH and 0.015 moles of NaHCOO is 3.02.

Learn more about buffer solution: https://brainly.com/question/8676275

#SPJ11

Silver is the best conductor of electricity. Its main disadvantage is that it tarnishes when exposed to air. the native mineral that is the best conductor of electricity.

The Latin argentum and Sanskrit argunas, both meaning "bright," are where the word "Ag" originates. Even in the Stone Age, silver was used. Silver use dates back at least 5000 years, according to archaeological findings. When aesthetics is crucial, it is utilised for silver dinnerware and jewellery. As the greatest known visible light reflector, silver is utilised to build mirrors, even though it tarnishes with time. Electrical connections, batteries, solder and brazing alloys, dental alloys, and other products also use it.

Learn more about silver here:

https://brainly.com/question/6434391

#SPJ4

Answer:

A

Explanation:

bc its right

The conversions are 2000 mg to g id 2 g, 5 ml to l is 0.005 l, 104 km to m is 104000 m, 198 g to kg is 0.198 kg, 2500 m to km is 2.5 km, 75 ml to l is 0.075 l, 65 g to mg is 65000 mg, 5.6 kg to g is 5600 g,8 mm to dm is  0.0008 dm, 5.6 m to cm is 560 cm and 120 dag to dg is  12000 dg.

Conversion is defined as a client action that is performed on your website and is tracked by conversion rate.

1 mg = 0.001 g

1 L = 1000 ml

1 km = 1000 m

1 g = 0.001 kg

1 mm = 0.0001 dm

1 m = 100 cm

1 dag = 100 dg

Thus, the conversions are 2000 mg to g id 2 g, 5 ml to l is 0.005 l, 104 km to m is 104000 m, 198 g to kg is 0.198 kg, 2500 m to km is 2.5 km, 75 ml to l is 0.075 l, 65 g to mg is 65000 mg, 5.6 kg to g is 5600 g,8 mm to dm is  0.0008 dm, 5.6 m to cm is 560 cm and 120 dag to dg is  12000 dg.

To learn more about conversion, refer to the link below:

https://brainly.com/question/3477680

#SPJ1

Answer:

144.12873

Explanation:

Hope this helps you

-----------------------------------------------------------------------------------------------------------------

回答：

144.12873

説明：

これがお役に立てば幸いです

Answer:

96gm/mole

Explanation:

(NH 4)2CO 3 =2×18+12+3×16=96gm/mole

The reaction between iron(II) oxide and carbon monoxide produces iron and carbon dioxide.  moles of iron can be obtained when 5.50 mol FeO reacts with an excess of CO 5.50 mol.

The balanced chemical equation is given as :

FeO    +      CO     ------>     Fe   +   CO₂

given that :

number of moles of FeO = 5.50 mol

from the above equation:

number of moles of FeO react = number of Fe produced

1 mole of FeO react = 1 mole of Fe produced

number of moles of Fe = 5.50 mol

Thus, The reaction between iron(II) oxide and carbon monoxide produces iron and carbon dioxide.  moles of iron can be obtained when 5.50 mol FeO reacts with an excess of CO 5.50 mol.

To learn more about moles here

https://brainly.com/question/12513822

#SPJ4

Answer:

\(\tt{ \green{P} \orange{s} \red{y} \blue{x} \pink{c} \purple{h} \green{i} e}\)

A receptacle in a wet location would most likely be installed in a PS box. Option D is correct.

In wet locations, such as outdoors or in bathrooms, it is crucial to use electrical receptacles that are specifically designed to withstand moisture and water exposure. A PS box, short for a plastic-sheathed box, is commonly used in wet locations due to its moisture-resistant properties.

A PS box is made of non-metallic material, usually plastic, which helps protect the electrical components from water and other environmental factors. It has a cover that provides additional protection against moisture penetration.

When installing a receptacle in a wet location, it is important to ensure that it is properly grounded and that the electrical connections are securely made. Following the National Electrical Code (NEC) guidelines and consulting a licensed electrician is always recommended for safe and code-compliant installations.

Therefore, Option D is correct.

Learn more about penetration -

brainly.com/question/14654006

#SPJ11

Answer:

Breaking the bread

Explanation:

Because you're just breaking the bread into pieces.

Therefore, Elsa is right.

Learn more at: https://brainly.com/question/1689737?referrer=searchResults

Answer:

It's B i just did the test. trust me

Answer:

Aluminum isn't found pure naturally, but its found mixed with other minerals in the earth. It's used to make cans, foil, kitchen utensils, window frames and even deodorant

Explanation:

On the basis of classification, electrolytic cells use non-spontaneous reactions which require an external power source in order to proceed.

On the other end, galvanic cells are spontaneous reaction, meaning it occurs with no outside intervention

A chemical change or reaction simply refers to a change which is not easily reversed and in which no new substance is formed.

So therefore, On the basis of classification, electrolytic cells use non-spontaneous reactions which require an external power source in order to proceed.

Learn more about chemical reactions:

https://brainly.com/question/11231920

#SPJ1

Answer:

0.004g

Explanation:

Given parameters:

Volume of sodium carbonate  = 10cm³;  this is also 0.01dm³

Density of solution = 0.4g/dm³

Unknown:

Mass of the solution   = ?

Solution:

To solve this problem, we must understand that ;

 Mass  = density x volume

 So;

        Mass = 0.4 x 0.01  = 0.004g

Answer:

0.004g

Explanation:

Answer:

Radium

Explanation:

Radium is a radioactive element which was often put in beauty products.

Answer:

1.5 mol H2O

Explanation:

Limiting reactant was C2H6 - 0.5 moles

Fomula became .5C2H6 + 1.75O2 = 1CO2 + 1.5H2O

Answer:

B

Explanation:

because polarity of the water molecules is due to the B. deflection of the hydrogen atoms by the lone pair of electrons.

Answer:

B

Explanation:

In terms of analytical chemistry, a reference test is conducted to ensure accuracy, reliability, and consistency in the analytical process.

In analytical chemistry, a reference test is conducted to establish a standard or reference value against which other measurements or test results can be compared. The purpose of a reference test is to ensure accuracy, reliability, and consistency in the analytical process.

Here is a general outline of how a reference test can be conducted:

1. Selection of Reference Material: Choose a certified reference material (CRM) or a well-characterized sample with a known composition or property that closely represents the analyte of interest. The CRM should have a well-established reference value traceable to a recognized standard.

2. Calibration of Instruments: Calibrate the analytical instruments or equipment using appropriate calibration standards before performing the reference test. This ensures that the instruments are accurately measuring the desired property or analyte.

3. Sample Preparation: Prepare the reference material or sample according to established protocols or methods. This may involve dilution, extraction, purification, or any other necessary steps to ensure accurate and representative measurements.

4. Measurement: Perform the measurement using the selected analytical technique or method. Follow the recommended operating conditions, sample handling procedures, and measurement protocols to obtain reliable and precise results.

5. Quality Control: Implement quality control measures during the reference test. This may include running multiple replicates or performing internal standardization to assess the precision and accuracy of the measurements. Monitor instrument performance and track any potential sources of error or variability.

6. Data Analysis: Analyze the collected data and calculate the reference value using appropriate statistical methods. Compare the measured values to the established reference value or reference range to determine the accuracy and reliability of the measurement.

7. Reporting: Document the reference test results, including the reference value, measurement uncertainty, and any relevant information about the test conditions and procedures. Clearly state the traceability of the reference value to recognized standards.

8. Verification and Validation: Periodically verify and validate the reference test procedure by participating in inter-laboratory comparison studies, proficiency testing, or other external quality assessment programs. This ensures the ongoing accuracy and reliability of the reference test method.

To know more about reference test here

https://brainly.com/question/1265793

#SPJ4