1. Two hypothetical elements in the periodic table have different characteristics as shown in the following table.




ELEMENT, ELECTRONEGATIVITY, TYPE OF ION, ELECTRICAL CONDUCTIVITY, BRIGHTNESS


X Low Electro cation ion high conduc brightness yes


Y High Electro anion ion none conduc brightness no






According to the data in the table, answer the following questions.




a. If you were to carry out an experiment with these 2 hypothetical elements, write a hypothesis to differentiate them and write another hypothesis about how they would react with oxygen and water.








HYPOTHESIS 1:






HYPOTHESIS 2:






In four steps, design an experiment (write step 1, step 2, step 3 and step 4) to check and verify what types of links would form these elements X and Y if after a series of reactions these elements join in some type chemical bonding.






STEP 1








STEP 2








STEP 3








STEP 4








b. A series of reactions of elements X and Y are given below, complete these reactions bearing in mind that X has an oxidation number +2 and Y has an oxidation number +6.




I. X + O2  XO






II. Y + O2  YO3.






III. XO + H2O  X(OH)2






IV. YO3 + H20  H2YO4.






V. X(OH)2 + H2YO4  A + H2O.






d. Considering the result (A) in reaction number 5, answer:




I. What type of chemical bond do you think A has?




II. What are its physical and chemical properties?




III. Design a four-step experiment so that you can identify the type of chemical bond that substance A obtained in reaction 5 has. The design must contain at least 2 variables to be measured and 2 hypotheses with these variables.

Answers

Answer 1

Answer:

gas and element and compound

Explanation:

because it's different and more power so the elements


Related Questions

What force is important in the creation of both coal and petroleum?​

Answers

Explanation:

heat and pressure are two main forces that transform organic matter into fossil fuels

Which of the following elements is a metalloid (semimetal)?

C
P
Sb
N
In

Answers

Answer:

Sb

Explanation:

Sb (antimony) is an metalloid

Identify the atom oxidized, the atom reduced, the oxidizing agent, and the reducing agent. 2Fe + 3V2O3 -------> Fe2O3 + 6VO​

Answers

Explanation:

Fe- reducing agent (since it is oxidized to fe203)

v203- oxidizing agent(since it is reduced)

In the given reaction, Fe is the reducing agent and V is the oxidizing agent.

What is a reducing agent?

An atom or compound that loses its electrons to other substances in a reduction-oxidation reaction and gets oxidized to a higher valency state is called a reducing agent.

A reducing agent can be defined as one of the reactants of a redox reaction that reduces the other reactant by giving its electrons to the reactant. If the reducing agent can not give away its electrons to others in a reaction, then the reduction reaction cannot occur.

Given, the following chemical reaction:

2Fe + 3V₂O₃ → Fe₂O₃ + 6VO​

The V₂O₃ oxidation state of V:

2 x + 3(-2) = 0

2x = 6

x = + 3

The Fe₂O₃ oxidation state of Fe:

2 y + 3 (-2) = 0

2y = 6

y = + 3

The V acts as an oxidizing agent because it accepts one electron to change the oxidation state from +3 to +2.

Fe acts as a reducing agent because it gives out its electrons to change the oxidation state from 0 to +3.

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. Calculate the pH and the pOH of each of the following solutions at 25 °C for which the substances ionize completely:
(a) 0.200 M HCl

(b) 0.0143 M NaOH

(c) 3.0 M HNO3

(d) 0.0031 M Ca(OH)2

Answers

a. HCl:
pH= -log [H3O+]
PH=-log (0.200)
= 0.699

poH= 14-0.699
= 13.301

b. NaOH:
PoH= -log [OH-]
= -log (0.0143)
= 1.845
pH= 14-poH
= 14- 1.845
= 12.16

c. HNO3:
PH= -log[H3O+]
=-log(3.0)
= -0.4771
poH= 14-pH
= 14-9-0.4771
= 14.4771

pH= -0.4771, poH= 14.4771

d. [Ca(OH)2] = 0.0031M
[OH-]= 2X0.0031
[OH-] = 0.0062M

PoH= - log[OH-]
=-log(0.0062)
=-log(6.2x10-3)
=-(-2.21)
= 2.21
PH=14-poH
=14-2.21
=11.79
POH=2.21, PH= 11.79

Based on the molarity of the solutions;

For 0.200 M HCl; pH = 0.699, pOH = 13.301For 0.0143 M NaOH; pOH = 1.845, pH = 12.16For 3.0 M HNO3; pH = -0.4771, poH = 14.4771For 0.0031 M Ca(OH)2; pOH = 2.21, pH = 11.79

What pHand pOH?

pH is the negative logarithm to base ten of the hydrogen ions concentration of a solution.

pH = -log[H+]

pOH is the negative logarithm to base ten of the hydroxide ions concentration.

pOH = -log[OH-]

Also;

pH + pOH = 14

For HCl:

pH = -log [H3O+]

pH =-log (0.200)

pH = 0.699

Then;

poH= 14-0.699

pOH = 13.301

For NaOH:

pOH= -log [OH-]

= -log (0.0143)

pOH = 1.845

Then;

pH= 14-poH

= 14- 1.845

pH = 12.16

For HNO3:

pH= -log[H3O+]

=-log(3.0)

= -0.4771

Then;

pOH = 14-9-0.4771

pOH = 14.4771

For [Ca(OH)2]

molarity = 0.0031M

2 moles of OH- are produced

[OH-]= 2 × 0.0031

[OH-] = 0.0062M

pOH = - log[OH-]

=-log(0.0062)

=-log(6.2x10-3)

=-(-2.21)

pOH = 2.21

Then;

pH =14-2.21

pH =11.79

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What will change if liquid 5.0 molar NiCl2 is added?

Answers

When liquid 5.0 molar NiCl₂ is added to 0.3 M of NiCl₂ solution :  

  Molarity will increase  ( A )

What is Molarity ?

Molarity is the measure of the number of moles of solute present per volume of the solution. The addition of 5.0 molar nickel chloride into a 0.3M Nickel chloride solution will lead to an increase in the number of moles of Nickel chloride present in the solution.

Molarity is directly proportional to moles of solute in a solution therefore the molarity of the solution will increase.

Hence we can conclude that When liquid 5.0 molar NiCl₂ is added to 0.3 M of NiCl₂ solution :   Molarity will increase.

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ASAP!!!!!!!!!!!!A marble bag contains 10 red marbles, 19 yellow marbles, and 29 green marbles. What is the % composition of each color marble in the bag?

Answers

Answer:

Red: 17.24%

Yellow: 32.76%

Green: 50%

Explanation:

Consider the following chemical reaction:
HF + NaOH - NaF + H20
Energy must be invested in order for the reaction to proceed.
What bonds must be broken in order for the reaction to proceed.
Select ALL that apply.
A. An ionic bond between sodium and hydroxide.
B. An ionic bond between sodium and fluorine.
C. A covalent bond between sodiume and fluorine.
D. An ionic bond between hydrogen and fluorine.
DE. A covalent bond between hydrogen and fluorine.
DE A covalent bond between hydrogen and oxygen

Answers

Answer: The correct options are A and E

Explanation:

A chemical reaction is defined as the reaction in which two or more chemical substances react to form two or more different chemical substances.

A new substance (product) is formed in a chemical reaction when the bonds between the reactants are broken so that the new bonds between the products can be formed.

For a given chemical reaction:

[tex]HF+NaOH\rightarrow NaF+H_2O[/tex]

Here,

HF is a covalent compound as sharing of electrons take place between hydrogen and fluorine atom

NaOH is an ionic compound as a complete transfer of electrons occurs from sodium to hydroxide.

Thus, to form the products, an ionic bond between sodium and hydroxide must be broken coupled with a covalent bond between hydrogen and fluorine.

Hence, the correct options are A and E


Pleaseee helpppp.....

Answers

Answer:

C. All of the above

Explanation:

They all happen beyond critical point.

The reaction below is performed with 10.0 g of Al and 19.0 g of O2. How many grams of aluminum oxide will be made? 4 Al (s) + 3 O2 (g) → 2 Al2O3 (s)

Answers

Answer:

18.89 g of Al₂O₃.

Explanation:

The balanced equation for the reaction is given below:

4Al + 3O₂ —> 2Al₂O₃

Next, we shall determine the masses of Al and O₂ that reacted and the mass of Al₂O₃ produced from the balanced equation. This can be obtained as follow:

Molar mass of Al = 27 g/mol

Mass of Al from the balanced equation = 4 × 27 = 108 g

Molar mass of O₂ = 16 × 2 = 32 g/mol

Mass of O₂ from the balanced = 3 × 32

= 96 g

Molar mass of Al₂O₃ = (27×2) + (16×3)

= 54 + 48

= 102 g/mol

Mass of Al₂O₃ from the balanced equation = 2 × 102 = 204 g

SUMMARY:

From the balanced equation above,

108 g of Al reacted with 96 g of O₂ to produce 204 g of Al₂O₃.

Next, we shall determine the limiting reactant. This can be obtained as follow:

From the balanced equation above,

108 g of Al reacted with 96 g of O₂.

Therefore, 10 g of Al will react with

= (10 × 96)/108 = 8.89 g of O₂.

From the calculation made above, we can see clearly that only 8.89 g out of 19 g of O₂ given, reacted completely with 10 g of Al.

Therefore, Al is the limiting reactant and O₂ is the excess reactant.

Finally, we shall determine the mass of aluminium oxide, Al₂O₃, produced from the reaction.

NOTE: in this case, the limiting reactant will be used because it will give the maximum mass of the aluminium oxide, Al₂O₃ as all of it is consumed in the reaction.

Al is the limiting reactant and the mass of aluminium oxide, Al₂O₃ produced can be obtained as follow:

From the balanced equation above,

108 g of Al reacted to produce 204 g of Al₂O₃.

Therefore, 10 g of Al will react to produce = (10 × 204)/108 = 18.89 g of Al₂O₃.

Thus, 18.89 g of Al₂O₃ were obtained from the reaction.

can someone check if i did this right. thank you !!​

Answers

Answer:

noo

Explanation:

its basic

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

Answer: acidic

Explanation:

Which of the following is an example of nuclear fission?
A. A gamma emitter is used to trace movement of chemicals in the
environment.
B. A radioactive drug that emits electrons is used to treat cancer in a
patient.
O c. Two different isotopes of hydrogen form an isotope of helium on
the sun.
O D. A large radioactive atom breaks into smaller atoms, producing
nuclear energy.

Answers

The statement which is an example of nuclear fission is that a large radioactive atom breaks into smaller atoms, producing nuclear energy.

What is nuclear fission?

Nuclear fission is a kind of radioactive decay reaction in which an unstable nuclei of an atom will split into smaller stable nuclei by the emission of lots of energy.

Gamma emitter is used inside the human body to trace the information that assists in making a diagnosis by the help of medication.To treat cancer patient high energetic rays like x-rays, gamma-rays are used.Formation of isotope of helium from two different isotopes of hydrogen is an example of nuclear fussion reaction.

Hence in nuclear fission a large radioactive atom breaks into smaller atoms, producing nuclear energy.

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Concentrations-
How many moles of HCI are present in 562.0 ml of a 6.17 M HCI solution?

If possible, show work.

Answers

Moles of HCl is 3.47mol

Work shown on photo

what is indepent and dependent variables

Answers

Answer:

The independent variable is the cause. Its value is independent of other variables in your study.

The dependent variable is the effect. Its value depends on changes in the independent variable.

Ex: The ice cube melts on the stove.

Dependent variable: Ice Cube

Independent variable: heat of stove

Answer:

In an experiment, the IV(independent variable) is a variable that is changed to see how it affects something else, and the DV (dependent variable)is a variable that is being measured/observed.

hope this help!

please mark as brainiest <3

Nitrogen is a group 15 element. What does being In this group imply about the structure of the nitrogen atom?

Answers

Answer:

Nitrogen has 5 valence electrons

Explanation:

nitrogen has it's attoms form triple bonds which are very hard to break

so non-reactive

The food is good but it was okay and it wasn’t worth the price and it would not taste good for a one hour or so it just came in

Explain a polar molecules and give examples​

Answers

Ethanol is polar because the oxygen atoms attract electrons because of their higher electronegativity than other atoms in the molecule. Thus the -OH group in ethanol has a slight negative charge. Ammonia (NH3) is polar. Sulfur dioxide (SO2) is polar.

The electrolysis of water has the equation 2H2O (l) → 2H2 (g) + O2 (g). What type of reaction is this?

A)

Single displacement

B)

Double displacement

C)

Decomposition

D)

Synthesis

Answers

Answer:b

Explanation:

Determine the number of subatomic particles in bromine-35.

Answers

Number of subatomic particles=35+36+35=106

Explanation:

Atomic number=35

Mass number=71

No. of proton p=35

No. of neutron n=71−35=36

No. of electron e=35


How did reducing the number of
decomposers affect the amount of carbon
dioxide in the ecosystem?

Answers

Answer:

As organisms release energy during cellular respiration, carbon dioxide is produced from the carbon in energy storage molecules. ... Carbon dioxide in the biodome decreased because decomposers decreased which means there was a decrease in cellular respiration overall.

btw :

stay safe! :3

The correct pathway for air entering the human respiratory system is _______.
A)nose, trachea, alveoli, bronchi
B)nose, bronchi, trachea, alveoli
C)alveoli, trachea, epiglottis, nose
D)nose, trachea, bronchi, alveoli

Answers

Answer: D

Explanation:

Which value could be the y-coordinate for point Q?
215
42
2/13
8/2

Answers

I think the answer is the first choice

What is the molecular geometry of Br2

Answers

the molecular geometry of Dibromine is Linear and the compound has a symmetrical shape.

12. Which nonmetal is the most reactive?
A bromine
B
iodine
C) fluorine
D) chlorine

Answers

Answer:

C Fluorine

Explanation:

C fluorine is the answer

what is periodic law​

Answers

The Periodic Law states that the physical and chemical properties of the elements recur in a systematic and predictable way. When the elements are arranged in order of increasing atomic number. Many of the properties recur at intervals.

Which of the following issues surrounding nuclear power creates the biggest
concern?
A. Where nuclear power should be used
B. How to deal with the radioactive waste
c. How many power plants should be built
O D. What nuclear power should be used for

Answers

Question : Which issue surrounding nuclear power creates the biggest concern?

Answer : How to deal with the radioactive waste (B)

The following issues surrounding nuclear power that create the biggest concern is What nuclear power should be used for?

What is nuclear power?

Nuclear powers are those powers that are produced by nuclear reactions. These reactions include nuclear fission, nuclear fusion, and nuclear decay. Nuclear power is currently in use to produce electricity. The reaction uses uranium and plutonium reaction to produce electricity.

Nuclear power is used for generating electricity, and it is necessary to use the correct radioisotopes to produce electricity.

Thus, the correct option is D. What nuclear power should be used for?

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Which statement best supported by the data on the map

Answers

For my opinion 2nd last statement is better

When 11.2 liters of hydrogen gas is made by adding zinc to sulfuric acid, what mass
of zinc is needed?
Zn + H2SO4 -> H2 + ZnSO4

Answers

32.7 g Zn

Explanation:

First convert the amount of gas into moles:

11.2 L H2 × (1 mol H2/22.4 L H2) = 0.500 mol H2

Then use the molar ratio to find the amount of zinc necessary to produce the amount of gas above:

0.500 mol H2 × (1 mol Zn/1 mol H2)

= 0.500 mol Zn

Now use the molar mass of zinc to find the number of grams of zinc for the reaction to occur:

0.500 mol Zn × (65.38 g Zn/1 mol Zn)

= 32.7 g Zn

why does shampoo remove hair grese for chemistry acids and alkali

Answers

because it’s shampoo

An element X has the proton number 18.
The next element in the periodic table is an element Y.
Which statement is correct?

Answers

Answer:

This question is incomplete

Explanation:

This question is incomplete. However, the element X with the atomic number of 18 is Argon (Ar) while the next element (element Y) in the periodic table, with atomic number 19, is potassium (K).

Element X is found in the group zero (also called group 18 and elements found therewith are referred to as noble gases) of the periodic table while element Y is found in group 1 (elements found here are referred to as alkali metals).

Element X has a completely filled outermost shell while element Y has one electron in its outermost shell.

Element X is a metal while element Y is a nonmetal.

Please help I’ll give brainliest

Answers

REACTION TYPE:

Single displacement/Oxidation-reduction

(Hope this helped UwU)

Answer:

Synthesis reaction is the answer

Who is my favourite wrestler?​

Answers

i don’t know:)))))))))))

Answer:

ma herdina thesto wrestling

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