Chemistry High School

I WILL GIVE U BRAINLIEST IF U HELP ME!!!!!

I WILL GIVE U BRAINLIEST IF U HELP ME!!!!!

Answers

Answer 1

Answer:

your awnser is B cutting back

Related Questions

Given the standard heats of reaction

Reaction ∆H 0

M(s) + 2 X2(g) → MX4(g) −98.7 kJ/mol

X2(g) → 2 X(g) +327.3 kJ/mol

M(g) → M(s) −20.1 kJ/mol


calculate the average bond energy for a single

M-X bond.

Answer in units of kJ/mol.

Answers

Answer:

Explanation:

M(s) → M (g ) + 20.1 kJ --- ( 1 )

X₂ ( g ) → 2X (g ) + 327.3 kJ ---- ( 2 )

M( s) + 2 X₂(g) → M X₄ (g ) - 98.7 kJ ----- ( 3 )

( 3 ) - 2 x ( 2 ) - ( 1 )

M( s) + 2 X₂(g) - 2 X₂ ( g ) - M(s)  → M X₄ (g ) - 98.7 kJ -  2 [ 2X (g ) + 327.3 kJ ] - M (g ) - 20.1 kJ

0 = M X₄ (g ) - 4 X (g ) - M (g ) - 773.4 kJ

4 X (g ) +  M (g ) =  M X₄ (g ) - 773.4kJ

heat of formation of M X₄ (g ) is - 773.4 kJ

Bond energy of one M - X bond =  773.4 / 4 =  193.4 kJ / mole

PLEASE HELP ME!!
Water (H2O) is composed of the same elements as hydrogen peroxide (H2O2).

Why do these substances have different properties?


The molecules are the same.


Water has more atoms than hydrogen peroxide.


The atoms are arranged differently in each molecule.


The atoms are the same.

Answers

Answer:

The molecules are the same.

Explanation:

If a can of soup 150 g mass and 0.75g/ cm^3 density what’s the volume

Answers

Answer:

The answer is 200 cm³

Explanation:

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

[tex]volume = \frac{mass}{density}\\[/tex]

From the question

mass = 150 g

density = 0.75 g/cm³

We have

[tex]volume = \frac{150}{0.75} \\ [/tex]

We have the final answer as

200 cm³

Hope this helps you

A black hole is a
a. an object of zero volume and infinite density
b. an object from which nothing, not even light, can escape
c. an object that emits x rays as matter falls into it
d. an object that disappears from our universe
e. all of the above

Answers

Answer:

B. an object from which nothing, not even light, can escape

Explanation:

How is iodine 131 similar to a normal atom of iodine?

Answers

Answer: Iodine 131 is a radioisotope with a very short half-life of 8.02 days, making it highly radioactive.

Explanation:

A plant's growth response to water is called _____.

hydrotropism
geotropism
gravitropism
thigmotropism

Answers

Answer:

A or Hydrotropism

Explanation:

Answer:

hydrotropism Explanation:

because hydro= water and topism= the turning part of an organism hope this helps!! <3

The equation, reactants
product + thermal energy, describes a(n)_____
reaction.

Answers

Answer: Here you go

Explanation:

The general equation for an exothermic reaction is: Reactants → Products + Energy.


Which of the following neutral atom configurations satisfies the octet rule?
1s2 2s2 2p6 3s2 3p6
1s2 2s1
1s2 2s2 3s2 3p4
1s2 2s2 3s2 3p6 4s1

Answers

Answer:

2

Explanation:i did the test


Convert the following to Celsius
16) 100°K
17) 200°K
18) 273°K
19) 350°K

Answers

Answer:

16) -173.15cel

17)-73.15cel

18)-0.15

19)76.85

Explanation:

I converted kelvins to cel

Brainly pls

in your own words describe the process of a physical change​

Answers

Answer:

A physical change is when the form of an object changes, but the substance stays the same.

Example: Ice melting into water.

During which process of the water cycle does water change from gas to liquid

Answers

Answer is condensation hope this help you

What is the term used to describe a change in motion?

Answers

Answer:

it should be momentum if im not mistaken

PLEASE HELP WILL GIVE BRAINLIEST​

Answers

It’s the atomic number.

What does the speed of the mixing colors tell you about the speed of the
molecules in hot and cold water?

Answers

Since the colors moved faster in the hit water, it means that the water molecules in the hot water move faster than the molecules in the cold water.

What is the process called when the moon bagins to fade from full moon to new moon

Answers

Waining there’s not much to explain here it’s simple moon phases

Is sulfur dioxide a element?

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yes it is a element.

If you put 8 protons and 8 neutrons, which element did you make?

oxygen
sulfur
berllium
gadolinium

Answers

u make the element oxygen

This chart shows characteristics of three different types of atoms.

A 3-column table with one row titled valence electrons in three types of atoms. The first column labeled Atom X has entry 6 valence electrons. The second column labeled Atom Y has entry 2 valence electrons. The third column labeled Atom Z has entry 8 valence electrons.
Which statement is best supported by the information in the chart?

Atom X will donate electrons to Atom Y.
Atom X will accept electrons from Atom Y.
Atom Y will accept electrons from Atom Z.
Atom Z will donate electrons to Atom X.

Answers

Atom X will accept electrons from Atom Y.

Answer:

B) Atom X will accept electrons from Atom Y.

Explanation:

because X has 6 electrons and Y has 2 it would make sense for Y to give to X

The distance of the Kentucky Derby, a classic horse race, is 1.25 miles. How is this distance expressed in furlongs ?

Answers

So to convert from miles to furlongs you need to multiply by 8 so you do
1.25 x 8
Which is 10 furlongs

The element found in Group 13, Period 2 is ______ a- Al b- Be c- B d- Mg

Answers

c- B which is Boron...

All 6 sides of a cube measure 65mm. Calculate the volume of the cube in cm32

Answers

Same I need help also

HELP ME PLEASE!!
HELP!!!
Opportunity cost refers to:
A. the price of a good set by supply and demand in a market.
B. the inability of an economy to address all people's needs.
C. the lost chance to make one choice when another is made.
D. the economic motivation for a business to produce a good or
service.
SUBMIT

Answers

Answer:

C

Explanation:

All covalent compounds donot exist as giant aggregates. Why?​

Answers

This is because of the attractive forces between the molecules with the absence of overall electric charge. Covalent compounds are usually gaseous molecules at room temperature and pressure.

calculate the oxidation number of s in S2O8^2-​

Answers

Given problem:

    S₂O₈²⁻

Find the oxidation number of S;

Oxidation number presents the extent of oxidation of each atom of elements a molecular formular or formula unit or an ionic radical.

  For radicals:

          "the algebraic sum of all the oxidation numbers of all atoms in an ion containing more than one kind of atom is equal to the charge on the ion  "

 S₂O₈²⁻;   oxidation number of O is usually -2

             2(S) + 8(-2) = -2

               2S - 16  = -2

               2S = -2 + 16

                2S  = 14

                   S  = +7

The oxidation state of S in the radical is +7

What do you think is the difference between an "open" system & a "closed" system?

Answers

Answer:

Hope it help you

Stayhomestaysafe

Plz mark my answer brainliest✍️✍️

Explanation:

There are three types of systems in thermodynamics: open, closed, and isolated. An open system can exchange both energy and matter with its surroundings. ... A closed system, on the other hand, can exchange only energy with its surroundings, not matter.

REAL NAME - SHRESTH DUBEY

What is the importance of protons ?

Answers

Protons are important because they help keep the nucleus together, they also attract negatively charged electrons and keep them in orbit around the nucleus.

The protons inside a atoms nucleus help to bind the nucleus together. They attract the negative charged electrons and keep them in orbit around the nucleus. The number of protons in an atoms nucleus determine which chemical element it is

HELP!!!! PLEASE, it would be much appreciated.

Answers

It is made of cells, D.

d it is made of cells

Explanation:

because it is the one that makes most sense

which substance is a mixture? A. table salt B. gasoline C. aluminium D. carbon dioxide​

Answers

B.) Gasoline. Gasoline is a complex blend of compounds made from petroleum. There are various grades of gasoline. Thus it is a mixture

What is a scale and why do you use it?

Answers

To calculate the weight of something. It is used to find the weight of an object

Answer:

Scale is defined as a system or series of marks used for measuring or registering. An example of scale is what someone would use to figure out the length of something. An example of scale is what someone would use to find out how much they weigh.

Explanation:

Question 1
Why can't wee see atoms?

Answers

Answer:

They're too small

Explanation:

Atoms are smaller than the wavelength of visible light

Answer:

too small

Explanation:

Other Questions
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