Need help fast!!!!!!!!!!!

Need Help Fast!!!!!!!!!!!

Answers

Answer 1
I think it’s the second one!! Hope this helps! BRANLIEST plzzzz

Related Questions

The products in this reaction
A have the same properties as the reactants.
В.
have the same atom arrangement as the reactants.
С.
have different properties than the reactants.
D
have fewer atoms than the reactants.

Answers

Answer:

It’s either B or C:

В. have the same atom arrangement as the reactants.

С. have different properties than the reactants.

Explanation:

Sorry, I don’t know a lot about this topic :(

Determine the number of grams in each of the quantities

1.39.0 x 1024 molecules Cl2

Answers

Mass of Cl₂ : 164.01 g

Further explanation

A mole is a number of particles(atoms, molecules, ions)  in a substance

This refers to the atomic total of the 12 gr C-12  which is equal to 6.02.10²³, so 1 mole = 6.02.10²³ particles  

Can be formulated :

N = n x No

N = number of particles

n = mol

No = 6.02.10²³ = Avogadro's number

mol Cl₂ :

[tex]\tt n=\dfrac{N}{No}\\\\n=\dfrac{1.39.10^{24}}{6.02.10^{23}}\\\\n=2.31[/tex]

mass Cl₂(MW=71 g/mol) :

[tex]\tt mass=mol\times MW\\\\mass=2.31\times 71=164.01[/tex]

Answer:

hui

Explanation:

the structural formula for CF4 is

Answers

Answer:

PubChem CID 6393

Structure  

Find Similar Structures

Chemical Safety  

Compressed Gas

Laboratory Chemical Safety Summary (LCSS) Datasheet

Molecular Formula CF4

Molecular Weight  

88.004 g/mol

Explanation:

so i found this online and i hope it helps

carbon tetra fluoride. tetrefluoromethane is a colorless nonflammable gas

i couldn’t find the structural formula but this is the compound for CF4

Question 5 (2 points)
Which of the following has a higher boiling point, CO2 or Co? Explain.

Answers

Answer:

CO2 has higher boiling point as compared to CO

Explanation:

Because CO is linear molecule anf zero dipole moment while CO2 is non linear and it has dipole moment

Which covalent bond is the most polar?
a) S-O
b) C=0
c) Se-F
d) H-O
e) O=O

Answers

A I think let me know if it’s wrong

Explain why a) Kl (potassium iodide) dissolves in water, but b) it will not dissolve in
hexane.

Answers

Answer:

Explanation: Brief description of demonstration

Three clear liquids form three distinct layers in a cylinder. Iodine crystals sprinkled on the top layer sink and form pink solutions with the top and bottom layers but do not dissolve in the middle. When the liquids are mixed, two layers form: a pink layer on the bottom, and a colorless layer on top. When white potassium iodide crystals are added and the liquids are mixed again, the colorless layer turns yellow.

Concepts illustrated:

• Phases and phase boundaries (surfaces)

• Density

• Polar/non-polar (hydrophilic/hydrophobic) interactions

• Solubility, miscibility

• Chemical reaction

• Extraction

• [Solution and emulsion]

Materials

• Clear glass reaction cylinder or gas-washing bottle, at least 200 mm tall, with ground glass stopper (A cylindrical container is preferable to a separatory funnel for this experiment. The stopper must be non- reactive, and, to prevent a potentially dangerous pressure build-up, the stopper must be easily released. For a very small class, a large test tube with a suitable stopper is adequate. )

• Equal volumes of chloroform, water, and hexane (The volume of each liquid should be a little more than one-fourth the volume of the cylinder.)

• Iodine crystals and small spatula

• Potassium iodide crystals and medium spatula

Preparation

Work in a hood. Pour the chloroform into the reaction cylinder. Add the water and allow the liquids to separate completely. (If necessary, speed the process by holding the cylinder vertical and gently swirling the solution with a circular motion.) Tip the cylinder and pour the hexane slowly down the side to prevent mixing. Close the cylinder and set it aside, away from sources of heat, until time for the demonstration.

Answer:It forms single phase mixtures (solutions) with other polar and ionic substances. ... Since water is less dense than this non-polar mixture, the bubbles rise to the top. Potassium iodide, an ionic compound, dissolves easily in water but does not dissolve in chloroform and hexane.

Explanation:

The atmospheric gases in the thermoaphere are heated___.

Answers

Answer:

Directly by the sun

Directed by the sun! Hope this helps

A blue solid X is soluble in water which method is used to obtain pure solid x from an aqueous solution

Answers

Answer:

The answer is crystallisation

Crystallization will be your answer

How does dermal tissue play a key role in transpiration?

Answers

Answer:

Dermal tissue of the stems and leaves is covered by a waxy cuticle that prevents evaporative water loss. Stomata are specialized pores that allow gas exchange through holes in the cuticle. Unlike the stem and leaves, the root epidermis is not covered by a waxy cuticle which would prevent absorption of water.

Explanation:

Read the clues given below to classify an unknown organism.

Clue 1: A unicellular organism
Clue 2: Lives in the human body

What is the correct classification of the organism?
A. Domain Bacteria; Kingdom Eubacteria
B. Domain Archaea; Kingdom Eubacteria
C. Domain Bacteria; Kingdom Archaebacteria
D. Domain Archaea; Kingdom Archaebacteria

Answers

Answer:

c

Explanation:

bacteria can be a single cell and archaebacteria live in the human body

Answer:

c

Explanation:

please help ASAP it is maybe easy for you!!!

Answers

Answer:

the answer is C, 30g

If the producers of the ecosystem below make 14,000 units of energy. How much energy would be available to the very top trophic level?

Answers

Answer:

1.4

Explanation took test

0.025 millimeters is the same as how many liters?​

Answers

Answer:

2.5e-5

Explanation:

Convert 0.025 Milliliters to Liters (ml to L) with our conversion calculator and conversion tables. To convert 0.025 ml to L use direct conversion formula below. 0.025 ml = 2.5E-5 L.

Which statement is true about a reaction represented by a chemical equation that shows energy as a reactant?


A.
It absorbs energy.

B.
It releases energy.

C.
It is a replacement reaction.

D.
It is a combustion reaction.

Answers

A. It absorbs energy.
reactants are located on the left side of the equation, meaning energy among with other reactants were needed to get the reaction going, so it absorbed energy, which is also the endothermic process. The opposite of that would be having energy on the right side with the products which means that the reaction would've released energy which is the exothermic process. Hope this helps!

What kind of bond would form between an iron and an oxygen atom: ionic, covalent, or metallic? What kind of bond would form between two silver atoms: ionic, covalent, or metallic? What happens to the valence electrons in this bond? How do ionization energy and electronegativity help explain why this occurs? 3) What kind of bond would form between two chlorine atoms: ionic, covalent, or metallic? What happens to the valence electrons in this bond? How do ionization energy and electronegativity help explain why this occurs?

Answers

Answer:

See explanation

Explanation:

Since iron is a metal and oxygen is a non metal, a bond is formed between the two when electrons are transferred from iron to oxygen. Hence the bond is ionic.

Two silver atoms are held together by metallic bonds. Metallic bond are bond forces that exist between metal atoms in a crystal lattice. The valence electrons in this bond form a cloud. Metals have low ionization energy and low electronegativity hence they loose electrons easily. This accounts for the nature of the metallic bond.

The bond formed between two chlorine atoms is a covalent bond. The valence electrons in this bond are localized between the two chlorine atoms. Chlorine is a nonmetal hence it has a high ionization energy and high electronegativity. Hence it forms covalent bonds in which electrons are shared between bonding atoms.

Help its due tonight

Answers

Answer:

will you kiss me

Explanation:

oh the awsner is A

Answer: A
Explanation: I had the same problem and the answer is A

You are planning on making punch and you would like to cool it with ice. At the store, there are 2 different one-pound bags of ice to choose from: one that contains large ice cubes one that contains small ice chips. You only want to purchase one bag of ice and will add the entire bag to the punch. Would one of the bags cool the punch at a faster rate? If so, which one and why? If not, why? Would one of the bags of ice cool the punch to a lower temperature? If so, which one and why? If not, why? (Not really a chem q, I didn't know what subject to put it in)

Answers

The answer to this equation is 72 because 69+3=72 so therefore it’s 72

How much force is required to accelerate an 8-kg wagon at a rate of 15 m/s

Answers

Answer:

120 N

Explanation:

The force acting on an object given it's mass and acceleration can be found by using the formula

force = mass × acceleration

From the question we have

force = 8 × 15

We have the final answer as

120 N

Hope this helps you

Calculate the percentage composition of a hypothetical compound, X2Y3. The molar mass of X is 4.53 g/mol and the molar mass of Y is 8.71 g/mol. Round both answers to whole numbers. ​

Answers

Answer:

Explanation: Don't let anyone bring you down you got this you matter, and rock!


12.4 g of phosphorus reacts with 9.6 g of oxygen.
Which of the following chemical equation represents this reaction?
[Relative atomic mass: P, 31; 0, 16]
A P + O2 + PO2
B 2 P + O2 + 2 PO
C 3P +2 02 → P304
D 4P +3 02 → 2 P203​

Answers

Answer:

D 4P +3O₂ → 2 P₂O₃

Explanation:

In this problem, we need to convert the mass of phosphorus and oxygen to moles trying to find the ratio of reaction (The moles of P that reacts per mole of O₂):

Moles P:

12.4g P * (1mol P / 31g) = 0.4 moles

Moles O₂:

9.6g * (1mol / 32g) = 0.3 moles

The ratio of reaction is:

0.4 mol / 0.3 mol = 1.33 = 4 moles of P / 3 moles of O₂

That means 4 moles of P react with 3 moles of O₂ and the reaction that represents this ratio is:

D 4P +3O₂ → 2 P₂O₃

The reaction of 12.4 g Phosphorous with 9.6 grams of Oxygen will be represented as [tex]\rm 4\;P\;+\;3\;O_2\;\rightarrow\;2\;P_2O_3[/tex]

In a chemical equation, the stoichiometric values are the moles of the molecules involved in the reaction. For the reaction of Phosphorous and oxygen, the moles of both elements are to be calculated.

Moles = [tex]\rm \frac{weight}{molecular\;weight}[/tex]

Moles of Phosphorous = [tex]\rm \frac{12.4}{31}[/tex]

Moles of Phosphorous = 0.4

Moles of oxygen = [tex]\rm \frac{9.6}{16}[/tex]

Moles of oxygen = 0.6

Moles of [tex]\rm O_2[/tex] = 0.3

The equation will be:

[tex]\rm 0.4\;P\;+\;0.3\;O_2\;\rightarrow\;2\;P_2O_3[/tex]

[tex]\rm 4\;P\;+\;3\;O_2\;\rightarrow\;2\;P_2O_3[/tex]

The correct reaction will be D.

For more information about the chemical equation, refer the link:

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

compound form of lithium and selenium

Answers

Answer:

Li2Se

Lithium selenide

Explanation:

Why reaction between phosphorus and oxygen produces four atoms of phosphorus and five atoms of oxygen

Answers

Answer:

Reaction between an oxygen and  a phosphorus will produce oxides of phosphorus.

Explanation:

Reaction between oxygen and phosphorus produces four atoms of phosphorus with five atoms of oxygen. Sometimes it produces two atoms of phosphorus and five atoms of oxygen and sometimes four atoms of phosphorus and six atoms of oxygen. It does so depending upon the availability of oxygen. The size of phosphorus atom  interferes with the ability to form a double bonds to the other elements, such as nitrogen, oxygen, etc.

SOMEONE PLEASE HELP QUICKLY
determine the number of charged particles in nucleus of calcium atom then deduce the number of electrons
NUCLEAR CHARGE (20+)
ATOMIC MASS (40 amu)
given the relative charge of a proton =1+\ m1nucleon=1amu

Answers

Answer:

detail is given below.

Explanation:

The charged particles of nucleus are protons while neutrons are neutral having no charge.

We know that an atom consist of electrons, protons and neutrons. Neutrons and protons are present inside the nucleus while electrons are present out side the nucleus. Electron has a negative charge and is written as e⁻. The mass of electron is 9.10938356×10⁻³¹ Kg . While mass of proton and neutron is 1.672623×10⁻²⁷Kg and 1.674929×10⁻²⁷ Kg respectively.

Symbol of proton= P⁺  

Symbol of neutron= n⁰  

The number of electron or number of protons are called atomic number while mass number of an atom is sum of protons and neutrons.

one proton contribute 1 amu to the total weight. There are 20 protons and 20 neutrons in Ca thus its atomic mass is 40 amu.

While the atomic number is 20.

According to Le Chatelier's principle, what happens to the equilibrium constant (K) when the concentration of the reactants is doubled? The value of the equilibrium constant (K) is doubled. The value of the equilibrium constant (K) is halved. The value of the equilibrium constant (K) remains the same. The value of the equilibrium constant (K) changes unpredictably.

Answers

Answer:

The value of the equilibrium constant (K) remains the same.

Explanation:

A state of dynamic equilibrium is said to have been achieved in a reaction system when the rate of forward reaction equals the rate of reverse reaction.

At equilibrium, doubling the initial concentration of reactants have no effect on the equilibrium constant K. The equilibrium will rather shift to the left or right as required in order to annul the constraint.

Answer:

C

Explanation:

what are the things used in soap? are they good or bad to our skin?​

Answers

Answer: Your skin is your largest organ—22 square feet on average— Cleansers and body washes—might actually be doing us more harm than good, but, unfortunately, it absorbs harmful chemicals we put on it, too.

Explanation: Some are bad like scented body wash and hair stuff. But unscented is WAY better than scented, I learned that the hard way...

Which sentence contains a common allusion?
O A. The meeting became extremely tense.
OB. The meeting turned into Waterloo.
O C. The meeting was held in Chicago.
OD. The meeting proceeded despite obstacles.​

Answers

Answer:

B

Explanation:

The sentence that is a common allusion is:

B. The meeting turned into Waterloo.

All the other choices are not considered as an allusion

What is an allusion?

It is an inferred or roundabout reference to an individual, occasion, or thing or to a piece of another text. Most references rely upon the comprehension that there is a gathering of data that is shared by the essayist and the peruser consequently. the peruser will get the author's referent.

The example of common allusion from the instances given are:

The meeting turned into Waterloo.

Find more information about Allusion here:

brainly.com/question/2427003

What are the classifications of these compounds? Are they triglycerides?

Answers

Answer:

Yes they are triglycerides

Explanation:

Triglycerides are esters derived from glycerol and three fatty acids.

If we look at the structures closely, we will notice that the compounds are composed of glycerol and three fatty acids.

Hence the structures are triglycerides. The first structure is an unsaturated triglyceride while the second structure is a saturated triglyceride.

Which of the following reactants will generate products with a solution of phosphoric acid?
a
Al(s)
b
Cu(s)
c
Au(s)
d
Ag(s)

Answers

Answer:

A. Al(s)

Explanation:


Convert 500 mL to L

Answers

Answer:

0.5L

Explanation:

1L = 1000 ml

0.5L

Answer: 0.5

Explanation:

(?)Fe+(?)H20 - - -> (?)Fe3O4+(?)H2​

Answers

Answer:

what is this question??

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