How many moles of neon are in 7.6 x 10^23 in sig figs

Answer:

Reflection: reflection is the process of returning of light into the same medium after striking a surface.

Answer:

D

Explanation:

because the products are CACL2 AND I2 and both are solid

Answer:

Forming bonds requires energy

Explanation:

Creating a bond is bringing 2+ atoms into a more stable position.

Answer:

zRNA

Explanation:

RNA is a nucleic acid responsible for the synthesis of proteins, since it is the molecule that carries the information contained in DNA for the biological process called transcription.

There are three types of RNA, the mRNA, the tRNA and the rRNA. There is no RNA called a zRNA, however, existing RNAs have different functions. These functions are listed below:

The mRNA is called messenger RNA and is the RNA responsible for containing the DNA information that will be translated into proteins created during protein synthesis.

The tRNA is responsible for identifying the information presented by the mRNA, creating amino acids from it and transporting those amino acids in the right order to form proteins.

rRNA is also called ribosomal RNA and is responsible for creating ribosomes, which are the organelles where protein synthesis will take place.

Answer:

O₂ is the limiting reactant

0.406 moles of ammonia remains after the reaction goes complete.

Explanation:

Balanced reaction is:

4NH₃  + 5O₂  →  4NO  +  6H₂O

Let's determine the moles of each reactant:

12 g . 1mol / 17g = 0.706 moles of ammonia.

12 g . 1mol / 32g = 0.375 moles of oxygen.

4 moles of ammonia react to 5 moles of oxygen

Then, 0.706 moles of ammonia may react to (0.706 . 5) /4 = 0.882 moles

We only have 0.375 moles of oxygen and there are needed 0.882. O₂ is the limiting reactant. Definetely ammonia is in excess.

5 moles of oxygen react to 4 moles of ammonia

Our 0.375 moles may react to (0.375 . 4) / 5 = 0.3 moles

We have 0.706 moles of NH₃ and we only need 0.3

After the reaction goes complete (0.706 - 0.3) = 0.406 moles of ammonia still remains.

Answer:

A solar eclipse .

It is one that occurs when the moon gets between the Earth and the Sun and it casts its shadow over the Earth. A solar eclipse only happens during the phase of new moon when the moon is indirect blockage of sun rays from reaching the earth thus causing a full shadow of the moon to fall on the Earth’s surface.

2 A lunar eclipse can only occur when there is a full moon. An eclipse of the moon happens only at full moon and only when the moon passes through some portion of the Earth’s shadow. The shadow in made of a two cone-shaped components, one which is nested inside the other.

3.  Earth blocks sunlight from reaching the moon's surface. There are three categories of lunar eclipse according to the blockage of the sun rays. In a penumbral lunar eclipse, the moon passes through Earth’s penumbral shadow. The partial lunar eclipse occurs when a portion of the moon passes through Earth’s umbral shadow. The total lunar eclipse happens when the entire moon passes through Earth’s umbral shadow.

4.When an object in space comes between the sun and earth. It is one that occurs when the moon gets between the Earth and the Sun and it casts its shadow over the Earth. A solar eclipse only happens during the phase of new moon when the moon is indirect blockage of sun rays from reaching the earth thus causing a full shadow of the moon to fall on the Earth’s surface.

5.A total lunar eclipse. In this type of lunar eclipse, the events are clearly visible and striking to view because the Moon surface appear red in color. During the occurrence of the lunar eclipse events, 35% of the entire eclipse is total eclipse.

6. Wide, dark areas and strange spots and ridges –Galileo described the surface of the moon as being uneven and rough. In addition to that, he described the surface as crowded with depressions and bulges. In his original sketches, the long shadows cast by craters were represented by dark sided of the moon sketch.

7. Waxing gibbous .During the cycle of the moon, it undergoes several phases; new moon-new crescent-first quarter-waxing gibbous-full moon-waning gibbous-last quarter-old crescent-new moon. The new moon phase cannot be seen because the part receiving sun rays in then pointed away from the earth. The rest of the phases are visible from the earth.

8. New moon .

During the cycle of the moon, it undergoes several phases; new moon-new crescent-first quarter-waxing gibbous-full moon-waning gibbous-last quarter-old crescent-new moon. The new moon phase cannot be seen because the part receiving sun rays in then pointed away from the earth. The rest of the phases are visible from the earth.

9. Because the Southern Hemisphere has more direct sunlight .During the winter months, the Northern Hemisphere is tilted away from the sun, thus it receive sunrays at an angle thus it experiences the cold weather. At this period, it is summer in the Southern Hemisphere.

Explanation:

The moon is the earth's closed satellite and it gets light from the sun. The moon has several phases that are seen within 27 days cycle.

Hence as the earth changes its position the moon also revolves in a similar manner.

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Answer:

because it's water chemical bonds form when atoms share electrons and example of a chemical compound is water a water molecule forms when oxygen and hydrogen atoms react and are held together by covalent bonds like other compounds water always has the same chemical composition a ratio of two one of hydrogen atoms to oxygen atoms

The reason of why the chemical composition of water should be the same should be explained below.

Since it contain the water chemical bond at the time when the atom should share electrons.

And the example of the chemical compound represent the water that shows the water molecule created at the time when the oxygen and the hydrogen reacted and it could be together via the covalent bonds.

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Answer:

c

c

Explanation:

mark me brainliest pls

51.8 g NaCl

Explanation:

2Na(s) + Cl2(g) ---> 2NaCl(s)

20.4 g Na × (1 mol Na/22.9898 g Na) = 0.887 mol Na

0.887 mol Na × (2 mol NaCl/2 mol Na) = 0.887 mol NaCl

0.887 mol NaCl × (58.44 g NaCl/1 mol NaCl) = 51.8 g NaCl

Answer:

P = 400 Lb/in²

Explanation:

We are given;

Weight of woman; W = 100 lb

Area beneath heel of shoe; 0.25 in²

Now, we want to find pressure.

Formula is;

P = F/A

Where;

F is force exerted by the object which is equal to weight of the object

A is area covered by object

Thus;

P = 100/0.25

P = 400 Lb/in²

Answer:

As

Explanation:

because of ionic bond

0.0859 mol N2O5

Explanation:

First convert the # of grams of NO2 to moles:

7.90 g NO2 × (1 mol NO2/46.0055 g NO2)

= 0.172 mol NO2

Use the molar ratio to find the # moles of N2O5

0.172 mol NO2 × (2 mol N2O5/4 mol NO2)

= 0.0859 mol N2O5

Answer:

0.184 mol

Explanation:

Look up molar masses for the elements that comprise H₃PO₄:

H = 1.008 g/mol

P = 30.97 g/mol

O = 15.99 g/mol

The molar mass of H₃PO₄ is a weighted sum of these (3 hydrogen + 1 phosphorus + 4 oxygen) that comes out to about 97.99 g/mol.

Then

(18 g H₃PO₄) × (1/97.99 mol/g) ≈ 0.1837 mol

Answer:

1.346 meters per second

Explanation:

You traveled 35 meters in 26 seconds

35 / 26 = avg speed.

35 / 26 = 1.346...

Answer:

1. P

2. A/B

3. A/B

4. R/O

5. P

6. R/O

7. A/B

8. P

9. R/O

10. R/O

Explanation:

Precipitation:

Ag (aq) + HCl (aq) → H₂ (g) + AgCl↓

Precipitation reactions can contain a single element.

Certainly, two soluble solutions are mixed, forming an insoluble solid.

Reactions can be identified using a solubility chart, because solubility can affect the precipitacion's equilibrium.

Acid base:

Certainly you mix an acid(H+) an a base (OH-)

We talk about neutralization because we make water. And, there is also a formed salt.

HNO₃  +  KOH →  H₂O  + KNO₃

H⁺  +  OH⁻  ⇄  H₂O    Kw

Redox:

This is the reaction where moles of electrons are transferred and gained.

A pure element is consumed or formed. We have 2 half reactions:

- Reduction (oxidation state decreases, electrons are released)

- Oxidation (oxidation state increases, electrons are gaines)

Reactions involving pure O₂ are named combustion, which is a redox type.

This is an example of redox decomposition of hydrogen peroxyde.

2H⁺  +  H₂O₂  + 2e⁻  →  2H₂O

H₂O₂  →  2H⁺  +  O₂  + 2e⁻  

H₂O₂  →  2H₂O  +  O₂

Answer:  16700 mmHg , 22,0 atm

Explanation:   1 torr  = 1 mmHg, so p = 16700 torr = 16700 mmHg

1 atm = 101325 Pa = 760 torr

16700 torr / 760 = 21,97 atm

Answer:

the higher the kinetic energy

Explanation:

because their will be easy movement of particles.

Answer:

128.98 g/Mol

Explanation:

ΔTb = Kb * m * i

Where;

ΔTb = boiling point elevation

Kb = boiling point constant

m = molality of the solution

i = Van't Hoff factor

Hence;

Where molality = number of moles of solute/mass of solvent in Kg

Number of moles of solute = mass/Molar mass

So;

80.61 - 80.10 = 2.53 * 13g/M/0.5 * 1

Where M is the molar mass of the solute

0.51 = 2.53 * 13g/M/0.5

0.51 = 2.53 * 13/M * 1/0.5

0.51 = 32.89/M * 1/0.5

0.51 * 0.5 = 32.89/M

0.255 M = 32.89

M = 32.89/0.255

M= 128.98 g/Mol

0.167 is the molarity of the solution. Hence, option B is correct.

A mole is defined as 6.02214076 × [tex]10^{23}[/tex]of some chemical unit, be it atoms, molecules, ions, or others. The mole is a convenient unit to use because of the great number of atoms, molecules, or others in any substance.

Molar mass of NaOH = 40

40 g of NaOH = 1 mole

5 g of NaOH = 0.125 moles

1000 ml = 1 L

750 ml = 0.75 L

Molarity = 0.125 ÷ 0.75 = 0.1666

Approximately = 0.167

Hence, option B is correct.

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If the molar mass of NaOH is 39.9969 g/mol, the molarity of a 750.0 mL solution containing 5.00 g of NaOH solution is 0.167. Hence Option (B) is correct

Molarity is a measure of the concentration of a chemical species, in particular of a solute in a solution, in terms of amount of substance per unit volume of solution.

In chemistry, the most commonly used unit for molarity is the number of moles per liter, having the unit symbol mol/L or mol/dm³ in SI unit.

Given ;

       If, 40 g of NaOH = 1 mole

 Then, 5 g of NaOH = 0.125 moles

       If, 1000 ml = 1 L

  Then, 750 ml = 0.75 L

Molarity = 0.125 / 0.75

               = 0.1666

               = 0.167 Approximately

Therefore, If the molar mass of NaOH is 39.9969 g/mol, the molarity of the a 750.0 mL solution containing 5.00 g of NaOH solution is 0.167. Hence Option (B) is correct

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Answer:

The SI base unit for amount of substance is the mole. 1 mole is equal to 1 moles Iron(III) Oxide, or 159.6882 grams.

Answer:

your answer is B, your graph is constant from there, therefore the pattern is uniform (orderely).

Answer:

Magnetic separation

Sawdust is a non-magnetic material whereas iron shavings are magnetic. When a magnet is brought near a mixture of iron shavings and sawdust, the iron shavings will be attracted to the magnet while the sawdust will not. Thus, the iron shavings will be separated from the sawdust.

Explanation:

Separation techniques makes use of the differences in the properties of components of mixtures to separate theses components, one from another.

In a moxturemof iron shavings and sawdust, a suitable separation technique would be the use of magnetic separation.

The use of this separation technique is abasednonnthe principle that when a magnetnis brought near to a mixture containing magnetic and non-magnetic materials, the magnetic materials will be separated from the non-magnetic materials due to their attraction to the magnet. Sawdust is a non-magnetic material whereas iron shavings are magnetic. When a magnet is brought near a mixture of iron shavings and sawdust, the iron shavings will be attracted to the magnet while the sawdust will not. Thus, the iron shavings will be separated from the sawdust.

Answer:

The next step is prototype testing

Explanation:

The stages of the design process are;

1) Situation analysis

Paper based research is conducted on the situation to obtain the situation parameters

2) Brief writing

With the situation analysis developed above, the brief of the current situation is put down on paper

3) Problem research

The problem is researched and experimented on with the development of a paper based proof of the possible concept

4) Specification writing

The specifications of the problem are outlined

5) List the possible solutions

The possible solutions are brainstormed and listed

6) Preferred solution selection

The preferred solution is selected based on the constraints in the situation

7) Create working drawing/plan

The working design drawing of the selected solution or concept is completed and evaluated for applicability

8) Building of a prototype

The design is converted into a prototype which is a model of the actual solution

9) Testing of the prototype

The prototype is tested for functionality, for ability to work in the intended situation and/or in the intended system

10) Report writing

A report is made on the outcome of the tests for review before production

Therefore, after the prototype is created, stage 8, the next step is the testing of the prototype stage 9.

Answer:

The answer is C.

Explanation:

Answer:

C is right i yeah C is right

According to Dalton law total pressure will be 2580 PSI.

The overall pressure exerted by a mixture of gases is equal to the sum of the partial pressures exerted by each individual gas in the mixture, according to Dalton's partial pressures law. For instance, the total pressure exerted by a mixture of two gases A and B is equal to the sum of gas A and gas B's respective partial pressures.

Total pressure =[tex]P_{1}+P_{2}..........P_{n}........(i)[/tex]

It is given that,[tex]P_{Oxygen}= 1250 PSI, P_{Nitrogen} = 780 PSI, P_{Helium} =550PSI.[/tex]

Now, put the value of given data in above equation.

[tex]P_{Total} = P_{Oxygen}+P_{Nitrogen}+P_{Helium}[/tex]

=1250 PSI +780 PSI + 550PSI=2580 PSI

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Answer:

STP in chemistry is the abbreviation for Standard Temperature and Pressure. STP most commonly is used when performing calculations on gases, such as gas density. The standard temperature is 273 K (0° Celsius or 32° Fahrenheit) and the standard pressure is 1 atm pressure.

Answer:

Hydroxy(oxo)bismuthine oxide