WILL GIVE BRAINLIEST

12) The chemical formula for phosphorus trichloride is PCl3. In one to two sentences, explain how you would build a ball-and-stick model of phosphorus trichloride. Include a description of the parts of the model.(2 points)

13) Copper (Cu) reacts with sulfur (S) to form copper sulfide as shown in the chemical equation. A scientist adds 4 grams of Cu to 2 grams of S to start the reaction. At the end of the experiment, she has 6 grams of product. In one to two sentences, explain what would happen if the scientist increased the amount of copper to 6 grams, and why. (1 point)

Answers

Answer 1

Answer:

12) In the ball and stick model, an orange ball representing the phosphorus atom and three green balls representing chlorine atoms are connected by means of sticks that are coloured halfway green and orange respectively to represent the shared electrons between phosphorus and chlorine with the chlorine atoms forming the base of a triangular pyramid while the phosphorus atom forms the top of the pyramid.

13) The scientist will have 6 grams of product as before but will have two grams of unreacted copper atoms because the mass ratio of copper to sulfur in this reaction is 2:1

Explanation:

12) Phosphorus trichloride has a trigonal pyramidal structure and is composed of three atoms of chlorine and one atom of phosphorus.

In the ball and stick model, an orange ball representing the phosphorus atom and three green balls representing chlorine atoms are connected by means of sticks that are coloured halfway green and orange respectively to represent the shared electrons between phosphorus and chlorine with the chlorine atoms forming the base of a triangular pyramid while the phosphorus atom forms the top of the pyramid.

13) The reaction between copper and sulfur to form copper sulfide is shown in the equation below:

Cu + S ---> CuS

1 mole of copper reacts with 1 mole of sulfur to produce 1 mole of copper sulfide

molar mass of copper = 64 g/mol; molar mass of sulfur = 32 g/mol, molar mass of copper sulfide = 96 g/mol

mass ratio of copper to sulfur = 63 g/ 34 g = 2

This means that 2 grams of copper will react with 1 g of sulfur to produce 3 grams of product. similarly, 4 g of copper will react with 2 g of sulfur to produce 6 grams of product.

Therefore 6 g of of copper will react with 3 g of sulfur. However, since the amount of sulfur available for reaction is 2 g only, 2 g of copper will be left unreacted after 4 g has reacted completely with 2 g of sulfur to produce 6 g of copper sulfide.

WILL GIVE BRAINLIEST 12) The Chemical Formula For Phosphorus Trichloride Is PCl3. In One To Two Sentences,

Related Questions

how many atoms in a chair

Answers

Answer:

100 trillion atoms are in one cell and  so just find how many cells are in a chair and then take 100xthe number and you get your answer

Explanation:

There are uncountable atoms which are present in a chair depending on it's size.

What is an atom?

An atom is defined as the smallest unit of matter which forms an element. Every form of matter whether solid,liquid , gas consists of atoms . Each atom has a nucleus which is composed of protons and neutrons and shells in which the electrons revolve.

The protons are positively charged and neutrons are neutral and hence the nucleus is positively charged. The electrons which revolve around the nucleus are negatively charged and hence the atom as a whole is neutral and stable due to presence of oppositely charged particles.

Atoms of the same element are similar as they have number of sub- atomic particles which on combination do not alter the chemical properties of the substances.

Learn more about atom,here:

https://brainly.com/question/30898688

#SPJ2

The first column of the periodic table is called the

Answers

alkali metals
if i’m correct pls mark me brainliest <3

A cube of metal has a mass of 5.05 x 10°g and its density is known to be 12.77 g/mL, what is the volume of this metal?
A 395.5 mL
B. 2.529 mL
C. 63,910 mL
D. 64.48 ml

Answers

Answer:

Explanation:

option A is correct

The substances that get rid of carbamates and organophosphates are?​

Answers

Answer: Alfracon

...............................

What is the mass obtained of Ag from the reaction of 3 moles of AgCl

Given= Zn + 2AgCl —> ZnCl2 + 2Ag

Answers

Answer:

323.7g

Explanation:

Given parameters:

Number of moles of AgCl = 3 moles

Unknown:

Mass of Ag = ?

Solution:

We solve this problem by working from the known to the unknown;

The known here is AgCl;

    From the balanced equation:

              Zn + 2AgCl → ZnCl₂ + 2Ag    

              2 moles of AgCl will produce 2 moles of Ag

              3 moles of AgCl will produce 3 moles of Ag

The mass of Ag will be;

     Mass of Ag  = number of moles x molar mass

Molar mass of Ag = 107.9g/mol

      Mass of Ag = 3 x 107.9  = 323.7g

explanation of atomic radius​

Answers

Ah yes.

The atomic radius is basically the distance between the nucleus of the atom and the outermost electron in the farthest orbital of the atom. The more bigger the atomic radius , the less powerful is the force that holds together the nucleus and its electrons.

what is the mass of a 7.91 cm cubed piece of lead having a density of 11.34 g/cm cubed

Answers

Answer:

The answer is 89.70 g

Explanation:

The mass of a substance when given the density and volume can be found by using the formula

mass = Density × volume

From the question

density = 11.34 g/cm³

volume = 7.91 cm³

We have

mass = 11.34 × 7.91 = 89.6994

We have the final answer as

89.70 g

Hope this helps you

2. Why do you think it matters how close or how far an object is from the Sun to
sustain life on that object's surface?
PLEASE HELP ASAP

Answers

Answer:

In Copernicus's heliocentric model the planets orbit in circles around the sun. One may wonder how Copernicus determined the order of the planets and the size of their orbits – after all, he had no benefit of pictures from spacecraft or even a telescope.

Explanation:

marine science flvs 2.03
can someone please send the answers for this!!!

Answers

Answer:

101

Explanation:

Answer:

 

Explanation:

how to check atomic mass?​

Answers

Answer:

There are multiple ways to check mass but I'll tell you one. Look below

Explanation:

One easy way of checking atomic mass is by adding protons and neutrons.

For example:

We have 5 protons and 4 neutrons.

5+4=9

I hope this helps (:

Which of the following presents the steps of the engineering process in the correct order?
1.Identify a need, make a plan know the background, do the work, test the results, evaluate and redesign
O
2. dentify a need, know the background, do the work, make a plan, evaluate and redesign, test the results
3. Know the background, identify a need, make a plan, evaluate and redesign, do the work, test the results
4.Identify a need, know the background, make a plan, do the work, test the results, evaluate and redesign

Answers

Answer:

4

Explanation:

I got it right

The engineering process in the correct order "Identify a need, know the background, make a plan, do the work, test the results, evaluate and redesign"

What is engineering process?

At an industrial level, process engineering is just the understanding as well as application of fundamental natural principles and laws that allow people to transform raw materials along with energy into products that seem to be beneficial to society.

What is redesign?

Redesign, in terms of building, is the procedure of finding a solution to such a project. this includes then writing instructions that allow such a solution to be built.

The engineering process in the correct order "Identify a need, know the background, make a plan, do the work, test the results, evaluate and redesign"

To know more about engineering process and redesign

https://brainly.com/question/10175918

#SPJ2

What do eukaryotic cells, prokaryotic cells and viruses all have in common?

Answers

Answer:

Like a prokaryotic cell, a eukaryotic cell has a plasma membrane, cytoplasm, and ribosomes, but a eukaryotic cell is typically larger than a prokaryotic cell, has a true nucleus (meaning its DNA is surrounded by a membrane), and has other membrane-bound organelles that allow for compartmentalization of functions.

Explanation:

is this okay???

what is the main function of this organelle in the cell?​

Answers

Answer:

[tex]to \: use \: energy \: from \\ \: sunlight \: to \: make \: sugars.[/tex]

Explanation:

[tex]the \: main \: function \: of \: this \: organelle \\ \: in \: the \: cell \: is \: to \: use \: energy \: from \\ \: sunlight \: to \: make \: sugars.[/tex]

What occurs to the particles in a fluid during convection ?

Answers

Answer: what are options

Explanation:

Type the correct answer in each box.

Which chemical symbols will complete the equation for this single displacement reaction?

2NaBr + Cl2 → 2 __ __ + __ 2

Answers

Answer:

2Naci+Br2

Explanation:

i hope it is help full

Answer:

Na//Cl//Br

Explanation:

Which best explains the formation of polyester?
a condensation polymerization of a carboxylic acid and an alcohol
an addition polymerization of a carboxylic acid and an alcohol
a condensation polymerization of two alcohols
an addition polymerization of two alcohols

Answers

Answer:

The correct answer is - a condensation polymerization of a carboxylic acid and an alcohol

Explanation:

Condensation polymerization is a type of polymerization that forms a byproduct by the bonding of two different types of monomers during polymerization.

Polyester is an example of condensation polymerization which is formed by the polymerization of carboxylic acid and an alcohol monomer. In addition polymerization, there is only one type of monomers bond together.

Answer:

A. a condensation polymerization of a carboxylic acid and an alcohol

Explanation:

A student states that photosynthesis is conducted only in plant cells and that cellular respiration occurs only in animal cells. Tell whether the student is correct and why. In your response, be sure to describe both processes and the structures involved. Upload your answer below.

Answers

Answer:

This is correct

Explanation:

This is correct because for photosynthesis you need organelles such as chloroplasts, chloroplasts absorb light energy and convert it into usable energy for plants. Animal cells do not have chloroplasts/similar organelles so  they can't absorb energy from the sun, Animal cells use mitochondria which takes energy from our food and breaks it down into usable energy(such as ATP) to be transported.

1. Calculate the average atomic mass of iron if its abundance in nature is 15%-iron-55 and
85% iron-56

Answers

The average atomic mass of iron : 55.85 amu

Further explanation

The elements in nature have several types of isotopes

Isotopes are atoms whose no-atom has the same number of protons while still having a different number of neutrons.

An atomic mass unit = amu is a relative atomic mass of 1/12 the mass of an atom of carbon-12.

The 'amu' unit has now been replaced with a unit of 'u' only

Atomic mass is the average atomic mass of all its isotopes

atomic mass X = mass isotope 1 . % + mass isotope 2.% ...

The average atomic mass of iron

[tex]\tt =0.15\times 55+0.85\times 56\\\\=\boxed{\bold{55.85~amu}}[/tex]

The average atomic mass of iron : 55.85 amu

Calculation for average atomic mass:

Isotopes are atoms whose atoms have the same number of protons while still having a different number of neutrons.

An atomic mass unit = amu is a relative atomic mass of 1/12 the mass of an atom of carbon-12.

The 'amu' unit has now been replaced with a unit of 'u' only

Atomic mass is the average atomic mass of all its isotopes.

Atomic mass X = mass isotope 1 *  Mas % + mass isotope 2* Mass %

The average atomic mass of iron:

=0.15 * 55 + 0.85 * 56

=55.85 amu

Thus, the average atomic mass of iron : 55.85 amu

Find more information about Average atomic mass here:

brainly.com/question/338808

What do we call the bond that forms when atoms share two pairs of electrons
(I have a test tomorrow and I'm doing a review right now but have no idea what the answer to this is.)

Answers

a covalent bond (also called a molecular bond)

How do the gravitational forces change as the objects get closer to each other?

Answers

Answer:

you can use the example of two magnets

Answer: The gravitational force Increase as the objects get closer.

Explanation:

What purpose do neutrons serve in the nucleus ? What happens if there are too many or too few neutrons?

Answers

Answer:

These nuclei with different numbers of neurons are called isotopes

Answer:

neutrons' main function is to attract each other and keep the nucleus of an atom intact. a nucleus will become unstable if there are too many or too few neutrons in it.

Explanation:

too many= it will undergo beta decay (the neutrons will changes into proton)

too few= there will be an imbalance between forces which leads to nuclear imbalance

Element X has two natural isotopes. The isotope with a mass of 10.012 amu (10X) has a relative abundance of 19.91%. The isotope with a mass of 11.009 ammu (11X) has a relative abundance of 80.09%. Calculate the atomic mass of this element.

Answers

Answer:

10.81

Explanation:

you can see the answer at the pic

Which of the following is NOT an example of a chemical change? *
O Corrosion
O Grinding
O Combustion
O Rust

Answers

Grinding as it’s a physical not chemical change :)

In this chemical formula: 3NH4 (ammonium) This chemical formula means there are 3 _____________ ___________, and 4 __________ ________ in each molecule.

Answers

Answer:

hope it helped you

Explanation:

3 atoms of nitrogen and 4 atoms of hydrogen in each molecule

The chemical formula 3NH4 means there are 3 atoms of nitrogen and 4 atoms of hydrogen in each molecule.

What are chemical reaction?

Chemical reaction is defined as a process in which one or more substances, the reactants, are converted into one or more different substances, the products.

A chemical reaction rearranges the constituent atoms of the reactants to create different substances as products.

There are five main types of reactions.

Combination reaction - A combination reaction is a reaction in which two or more substance combine to form a single new substance also known as synthesis reaction.Decomposition reaction - A decomposition reaction is a reaction in which a compounds break down into two or more simpler substance.Single replacement reaction - A single replacement reaction is a reaction in which one element replaces a similar element in a compound.Double replacement reaction - A double replacement reaction is a reaction in which the positive or negative ions of to ionic compounds exchange places from two new compound.Combustion reaction - A combustion reaction is a reaction in which a substance reacts with oxygen gas, releasing energy in the form of heat and light.

Thus, the chemical formula 3NH4 means there are 3 atoms of nitrogen and 4 atoms of hydrogen in each molecule.

To learn more about chemical reaction, refer to the link below:

https://brainly.com/question/3461108

#SPJ2

Chromium-48 decays. After 6 half-lives, what fraction of the original nuclei
would remain?

Answers

Answer:

The fraction of original nuclei remaining is 1.5625

Explanation:

During evaporation, what causes certain liquid molecules to become vapor molecules? A. Decreased fluidity A. Increased viscosity A. Decreased kinetic energy A. Increased kinetic energy.

Answers

Answer:

The answer is A. Decreased Fluidity

Explanation:

Taking the test on preformance matters

In evaporation, particles of liquids take energy in the form of sunlight from the surrounding and then convert into vapor phase. Increased kinetic energy causes certain liquid molecules to become vapor molecules.

What is evaporation?

Evaporation is a physical process in which the water in liquid state converts to gaseous state at the temperature below its boiling point. Evaporation happens before the boiling process.

Evaporation causes cooling effect in the surrounding. During summer when water is kept in earthen pot water cools, this is because of the evaporation process.

Evaporation is affected by temperature. As the temperature increases, kinetic energy of liquid molecules also increases and hence the rate of evaporation increases.

Therefore, increased kinetic energy causes certain liquid molecules to become vapor molecules.

To know more about evaporation, here:

https://brainly.com/question/8169606

#SPJ2

What causes the
differences in physical characteristics like hair color among people?
1. diferent versions of genes
2. variations in DNA length
3. different numbers of chromosomes
4. variations in cell nucleus size



Answers

DNA
sorry if it’s wrong, but that answer seems reasonable

Answer:

b

Explanation:

i took the test

Requires a medium to travel (travel fastest through solid-like metal train tracks A Waves B Sound Waves C Light Waves D matter​

Answers

Answer:

b

Explanation:

becuase of sound waves

Answer question number 4

Answers

Answer: Choice A

Explanation:

WHOEVER ANSWERS THIS QUESTION FIRST WILL GET BRAINLIEST!!
PLEASE HURRY!!!

Select 5 elements that form ions in an isoelectronic series with the noble gas Argon. Support your claim with evidence and scientific reasoning.

Answers

Answer:

                           

Explanation:

                                 

Other Questions
Has the internet positively or negatively impacted human society? in one paragraphPLEASE HELP DUE today In the diagram, bisects ABC. Find mABD and mDBC Crawford Corporation incurred the following transactions:1. Purchased raw materials on account $47,000.2. Raw Materials of $44,200 were requisitioned to the factory. An analysis of the materials requisition slips indicated that $7,300 was classified as indirect materials.3. Factory labor costs incurred were $60,100, of which $51,000 pertained to factory wages payable and $9,100 pertained to employer payroll taxes payable.4. Time tickets indicated that $54,400 was direct labor and $5,700 was indirect labor.5. Manufacturing overhead costs incurred on account were $83,600.6. Depreciation on the company's office building was $8,600.7. Manufacturing overhead was applied at the rate of 160% of direct labor cost.8. Goods costing $94,800 were completed and transferred to finished goods9. Finished goods costing $81,800 to manufacture were sold on account for $110,300.Required:Journalize the above transactions. (ii) What is the approximate chlorine-carbon-chlorine bond angle in C2Cl4? HELP HELP !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! What trait typical of the romantic era is featured in Washington Irving's short story "Rip Van Winkle"? Which event is an example of condensation?A. Wet clothes are drying on a clothesline.B. A mirror fogs up when someone takes a hot shower.C. Water drips from an icicle on the edge of a roof.O D. Rain turns to sleet as it nears the ground. 3n + 2 =24175i had to put extra letters During the Han Dynasty, Sima Qian wrote the history of China entitled, Historical Records.A. TrueB. False A, B, C, D and E are pathogens of different diseases for human beings. The route of entry of pathogens in human body is different according to habitat of pathogens or diseases. (5) a) What is pathogen and write about different types of pathogens? b) Give name of the diseases of each pathogen. c) Do the pathogens enter directly into the body? How? d) What is incubation period? is there a need for you to know the guidelines in choosing products? Why? What is the one way that the thermal energy of a system can be explained? Dexter rode his bike 2 kilometers. Then, he walked 955 meters more to go fishing. How many total meters did Dexter travel to go fishing? HELP ASAP I WILL GIVE 10 POINTS Click on the box until the correct abbreviation is shown, D if the sentence is declarative, IMP for imperative, INT for interrogative or EXC for exclamatory. Click on the box at the end of the sentence to select the correct punctuation. Bring me my Bible 1. Which of the following statements best describes the patterns and trends of the Periodic Table?a. The atomic number and atomic mass decrease from left to right across a period; energy levelsdecrease from top to bottom down a groupb. The atomic number and atomic mass increase from left to right across a period; energy levelsdecrease from top to bottom down a group.c. The atomic number and atomic mass increase from left to right across a period; energy levelsincrease from top to bottom down a group.d. The atomic number and atomic mass decrease from left to right across a period; energy levelsincrease from top to bottom down a group. What is the quotient of 2/3 and 5/6;A.1 4/5B.4/5C.5/9D.1 1/4 Four identical satellites are in orbit around the Earth, as shown in the diagram. For which satellite is the gravitational pull of Earth the strongest? The table shows the total number y (in billions) of U.S. movie admissions each year for x years. Use a graphing calculator to find an equation of the line of best fit for the data. Round each value to the nearest hundredth. The line of best fit is y = _(I need this by 11 pm please) 7. Analyze What rhetorica features in lines 81-93 of the Declaration of Sentiments support Stanton's purpose in writing? Which of the following is equivalent to 7^27^52^2/7^32^6