Chemistry High School

What is the oxidation state of fluorine (F)?
The Periodic Table
A.-2
B. +1
C. -1
D. +2

What Is The Oxidation State Of Fluorine (F)?The Periodic TableA.-2B. +1C. -1D. +2

Answers

Answer 1

Answer:

It is C. -1

Explanation:

[tex] { \underline{ \sf{ \blue{christ \: † \: alone}}}}[/tex]

Related Questions

If an object is travelling 25.0 meters/second, how far will it travel in 45 minutes?

Answers

Speed=25m/sTime=45min=(45×60)s=2700s

[tex]\\ \rm\longmapsto Distance=Speed(Time)[/tex]

[tex]\\ \rm\longmapsto Distance=25(2700)[/tex]

[tex]\\ \rm\longmapsto Distance=67500m[/tex]

The object travelling at 25 m/s, will travel a distance of 67500 m in 45 mins.

We'll begin by converting 45 mins to seconds. This can be obtained as follow:

1 min = 60 s

Therefore,

45 mins = 45 × 60

45 mins = 2700 s

Finally, we shall determine the distance travelled by the object in 2700 s (i.e 45 mins). This can be obtained as follow:

Time = 2700

Speed = 25 m/s

Distance =?

Distance = speed × time

Distance = 25 × 2700

Distance = 67500 m

Therefore, the object will cover a distance of 67500 m in 2700 s (i.e 45 mins)

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Which of the following molecules contains six bonding electrons?
A C2H4
B CO2
C H2S
D NCl3

Answers

Answer:

c2h4 (etthane........

bexcuse it has 6 bond of hydrogen

C₂H₄ molecules contains six bonding electrons. Therefore, option A is correct.

What do you mean by the term bonding ?

Chemical bonding is the process through which two or more atoms, molecules, or ions establish a chemical link to create a chemical compound. The atoms in the resultant molecule are held together by these chemical bonds.

Chemical bonds have three basic characteristics that must be taken into account: their strength, length, and polarity. The distribution of electrical charge among the atoms connected by a bond determines its polarity.

C₂H₄ molecules has six bonding electrons. This molecule is called as Ethylene. When bonding is done between two atoms, each atom shares a pair of electrons with each other.

Hence, for every one bond, two electrons are shared between two atoms

Thus, option A is correct.

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Which of the following apply to organic compounds. Select all that apply. Organic compounds cannot be synthesized. Organic compounds contain carbon. All organic compounds are products of living things. Organic compounds can be synthesized. All compounds that contain carbon are organic.

Answers

Answer:

Organic Compounds CAN BE synthesized

Organic Compounds contain Carbon

Balance in basic solution: O2(g) + Cr³+ (aq) → H₂O2 (1) + Cr₂O7²- (aq)

Answers

cr2o72+H2o2-(r3+o2)

Explanation:

r62o72+H2o2-(r3+o2)

Determine the empirical formula for compounds that have the following analyses. a. 28.4% copper, 71.6% bromine b. 39.0% potassium, 12.0% carbon, 1.01% hydrogen, and 47.9% oxygen c. 77.3% silver, 7.4% phosphorus, 15.3% oxygen d. 0.57% hydrogen, 72.1% iodine, 27.3% oxygen

Answers

Answer:

See explanation

Explanation:

Cu- 28.4/63.5, Br- 71.6/80

Cu- 0.447/0.447, Br- 0.895/0.447

Cu- 1, Br - 2

Empirical formula = CuBr2

b)

K- 39.0/39, C-12.0/12, H- 1.01/1, O- 47.9/16

K= 1, C-1, H- 1. O-3

Empirical formula= KHCO3

c)

Ag- 77.3/108, P-7.4/31, O-15.3/16

Ag-0.716/0.239, P- 0.239/0.239, O-0.956/0.239

Ag-3, P-1, O-4

Empirical formula= Ag3PO4

d)

H-0.57/1, I- 72.1/127, O-27.3/16

H- 0.57/0.57, I- 0.57/0.57, O-1.71/0.57

H-1, I-1, O- 3

Empirical formula= HIO3

How does the chemistry of the ocean change in response to high levels of CO2 in the atmosphere?

Answers

Ocean acidification is occurring because excess carbon dioxide (CO2) in the atmosphere is being absorbed at the surface of the ocean at an increasing rate. This excess CO2 results in more hydrogen ions, which increases the acidity of the ocean.

Did you know that before pencil erasers were added on in 1858. people got rid of pencil markings
with white breadcrumbs? Which would erase pencil markings better, an eraser or white bread
crumbs?

Make a hyphotesis plz

Answers

Answer:

I guess eraser is better than bread crumbs

Erasers would be better than white bread or crumbs to erase the pencil marks because they would not leave any food marks on the paper and using bread crumbs.

What is an eraser?

An eraser is an object of stationary which is used to remove pencil marks from the paper. It is used during writing, when we write something wrong, we could erase or remove the writing from the paper. It is very useful for small children because they usually make mistakes while studying.

Erasers are made from the milk of rubber plants. The milk is collected from the plants, and then it is mixed with chemicals and set down, and then cut into pieces.

Thus, Erasers would be preferable to utilizing bread crumbs or white bread because they would not leave any food stains on the paper after erasing the pencil markings.

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write the balanced chemical equation for the following word equation. sodium+sulphate Acidsodium sulphate +hydrogen​

Answers

Answer:

2NaOH+ H2SO4 → Na2SO4 + 2H2O

I HOPE ITS RIGHT IF NOT THEN SORRY

HAVE A GREAT DAY :)

Answer:

Sodium+sulphate=Na2SO4

Acidsodium sulphate + hydrogen=Na2SO4+H2O

what is mean by vector​

Answers

Answer:

A quantity having direction as well as magnitude is called vector.

What process is used to refine aluminum from its ore bauxite?

A. Electrolysis
B. Electrolytic oxidation
C. Voltaic cell processing
D. Smelting

Answers

The correct option for the process used to refine aluminum from its bauxite ore is option D.

D. Smelting

The reason why smelting is the correct choice is as follows;

Bauxite is the aluminum ore from which alumina, also known as aluminum

oxide, Al₂O₃, is produced. Bauxite is extracted from the topsoil regions of

some subtropical and tropical regions, and the Bayer process is primarily

then used to produce alumina from the bauxite.

Aluminum is produced from the alumina by an aluminum smelting process

known as the Hall—Heroult electrolytic process which involves the use of a

carbon anode and direct current to produce aluminum by reducing the

aluminum oxide

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A spontaneous reaction occurs when the sign of free energy is
A: Neutral
B: Zero
C: Positive
D: Negative

Answers

A spontaneous reaction is one that releases free energy, and so the sign of ΔG must be negative. ... When ΔH is negative and ΔS is positive, the sign of ΔG will always be negative, and the reaction will be spontaneous at all temperatures. This corresponds to both driving forces being in favor of product formation.

Solids have_____
density and_____
compressibility compared to
liquids.

Answers

Answer:

higher density and lower compressibility

PLEASE HELP URGENT!!
What is the SI system? What are its benefits?

Answers

Answer:

The SI system : The international system of units.

It is a scientific method of expressing the magnitudes or quantities of important natural phenomena.

Benefits of SI system

It is a coherent system of units ( a system based on certain sets of fundamental units )It is a rational system of units ( it assigns only one unit to a particular physical quantity )

15. Sodium chloride is called an electrovalent compound whereas carbon dioxide is called covalent compound why?​

Answers

Answer:

NaCl is an electrovalent compound because the sodium and chlorine atoms give one electron from their outermost shells to each other in order to complete their octets

Explanation:

Make me Brain liest plz );

solution is an example of______mixtures​

Answers

Answer:

homogeneous mixture must be the answer

What are the top three sources of US electricity generation?

Answers

The three major categories of energy for electricity generation are fossil fuels (coal, natural gas, and petroleum), nuclear energy, and renewable energy sources.

Identify an element as a metal or a non-metal according to its position in the Periodic
Table

Answers

Answer:

Metals on the left of the Periodic Table.

Non-Metals on the top-right, plus Hydrogen.

Which of the following two conditions will favor a spontaneous reaction?
a) an increase in entropy and a decrease in enthalpy
b) an increase in both entropy and in enthalpy
c) a decrease in entropy and a decrease in enthalpy
d) a decrease in entropy and an increase in enthalpy

Answers

Answer:

option A

an increase in entropy and a decrease in enthalpy

pls mark brainliest

If the hydrogen ion concentration, (H+), in a solution is 5.39 x 10-8 M,

what is [OH-]?

A.1.86 x 1021 M

B. 1.86 x 10-7 M

Answers

Answer: 1.86*10^-7M

Explanation:

Answer:

B. 1.86 x 10^-7 M

Explanation:

Es la representación escrita de un cambio químico, se construye con simbología, la cual fue establecida para una mejor interpretación universal de las reacciones.

Answers

En un cambio físico, la naturaleza de la sustancia, las partículas que la componen y el número de partículas permanecen sin cambios.
En un cambio químico, las propiedades de las nuevas sustancias son diferentes de las originales, las partículas son diferentes y el número de partículas puede cambiar.
Si bien la distinción entre cambio físico y químico es útil, debería verse más como un continuo.
Las reacciones químicas pueden revertirse, pero esto puede resultar difícil en la práctica.

a. The atomic mass defines the elemental identity of an atom. b. The atomic number of an element is approximately equal to the number of protons in an atom of that element. c. Helium is the smallest atom and has an atomic number of 1. d. Isotopes of the same element have the same atomic mass.

Answers

B

Explanation:

option b is correct because

hydrogen is smallest atom

isotopes of elements have different atomic mass

atom mass have nothing to do with elemental identity

Based on this chart, what percentage of energy comes from fossil fuels?
Sources of Energy
Petroleum
37%
Other
1%
Natural Gas
24%
Renewable
Energy
7%
Coal
23%
Nuclear
Electric Power
8%
O A. 60%
OB. 23%
Ο Ο Ο Ο
C. 84%
O D. 37%

Answers

Answer:

37%+24%+23%=84% , i wish my answer is correct

What is the temperature of 0.5 moles of water vapor that occupies 120 dm3 and applies a pressure of 15,000 Pa to its container?
A. 433.21 K
B. 5.19 K
C. 7.52 K
D. 108.3 K
Reset Selection

Answers

Answer:

The answer is C. 7.52 K

Explanation:

hope it helps

Which of the following substances can be used to neutralize HF? Question 6 options: A) NaOH B) HF C) HCl D) SO2

Answers

Answer:

A) NaOH

got it right on the test.

Explanation:

Answer:

NaOH  

Explanation:

PLS HELP!! WILL MARK BRAINLIEST! 99 POINTS!

Answers

You're going to first balance the chemical equation.

After that, convert the grams of Na into moles of Na, and then multiply that with the ratio of moles of NaCl to Na, and then convert the mol of NaCl into grams in order to obtain the theoretical yield, since we are given that Na is the limiting reactant.

After that, plug the values into the yield formula, doing some basic algebra, and you should get your result.

You're going to first balance the chemical equation.

After that, convert the grams of Na into moles of Na, and then multiply that with the ratio of moles of NaCl to Na, and then convert the mol of NaCl into grams in order to obtain the theoretical yield, since we are given that Na is the limiting reactant.

After that, plug the values into the yield formula, doing some basic algebra, and you should get your result.

I NEED HELP ASAP!!!
All of the following are examples of ways to increase mechanical advantage EXCEPT:
Select one:

a.adding more threads to a screw

b.making a wheel larger than an axle

c.increasing the length of a ramp

d.increase the steepness of a ramp

Answers

Hi! I’m pretty sure the answer is B.

why do the aquatic plants not break down by water current?

Answers

Leaves of aquatic plants are covered by a waxy cuticle which does not allow the water to wet them.

SOMEONE PLEASE HELP HURRY

Answers

I think the answer is A. I know it's Planet X.

I need help please!!!!!

Answers

Answer:

sorry..,...........

.....

How are reactivity and electronegativity related? 1 point)
. An element will be more reactive if it has a very high or very low electronegativity
Elements with lower electronegativity are more reactive than elements with higher electronegativity
Elements with higher electronegativity are more reactive than elements with lower electronegativity
Anmentess reactive it has a very high or very low electronegativity

Answers

Elements which have high electron negativity are more reactive than elements with low electron negativity.

This is because elements with high electron negativity will gain more electrons to become more stable.

When electron negativity of an element decrease it becomes more into its element form.

There will be more ionization energy of the elements who have more electron negativity.

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Answer:     An element will be more reactive if it has a very high or very low electronegativity.  

Is your answer

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