Chemistry High School

PLEASE explain your answer!!!!​

PLEASE Explain Your Answer!!!!

Answers

Answer 1

Answer:

Explanation: confusing

Related Questions

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:

Where does the heat that is needed to warm the surface of the ocean come from? A. the Sun B. the Earth's interior C. animals D. the Earth's surface

Answers

Answer:

A. The Sun

Explanation:

Answer:

A

Explanation:

Most of our heat source on Earth comes from the Sun.

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

Answers

Same I need help also

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.

Is sulfur dioxide a element?

Answers

yes it is a element.

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

Heat rising in a hot-air balloon is an example of __________. conduction convection radiation solar

Answers

Answer:Condensation

Explanation:

it

Answer:

convection

Explanation:

I took test I got 100%

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.

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

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:

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 the equation C2H4 —> 2C + 2H2 + 52.3 exothermic or endothermic?

Answers

Answer:

Exothermic

Explanation:

Flowering plants are the most successful group of land plants. This is due, in part, to the trait that could be the label for point C. in the cladogram. Consider the organization of the cladogram. What trait, besides flowers, is unique to this group of plants?

Answers

Answer:

seeds are protected in fruits in such kind of plants.

Explanation:

The flowering plants are also known as Angiospermae, or Magnoliophyta. Flowering plants are plants that grow flowers. Such plants use seeds to reproduce, or make more plants like them.

Seeds are protected in fruits in such kinds of plants.

Examples of flowering plants are daisies, tulips, oaks, apples.

Answer:

Seeds are protected by a fruit

Explanation:

A chemist burns 0.8 g of iron in oxygen.
The iron reacts to form 1.1 g of iron oxide.
Calculate the mass of oxygen that reacted with the iron.

Answers

Answer:

0.3g

Explanation:

1.1 - 0.8 = 0.3

Hope this helps

The mass of oxygen that reacted with the iron is 0.3g

The chemist burns 0.8g of iron in oxygen

the iron reacts to form 1.1g of iron oxide

Therefore the mass of oxygen can be calculated by subtracting the mass of iron in oxygen from the mass of iron

= 1.1 - 0.8

= 0.3g

Hence the mass of oxygen that reacted with the iron is 0.3g

Please see the link below for more information

https://brainly.com/question/9631250?referrer=searchResults

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

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

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

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

Answers

Answer:

it should be momentum if im not mistaken

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 force is always a push. true or false ?

Answers

True because ur using the force to push

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

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

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:

PLEASE HELP WILL GIVE BRAINLIEST​

Answers

It’s the atomic number.

which element has an atom with the following composition? 24 protons, 28 neutrons and 24 electrons.

Answers

Chromium - 28

The amount of protons is equal to the atomic number and this can always be used to identify the element

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

Answers

Answer is condensation hope this help you

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:

the amount of space an object occupies is called its

Answers

Volume is the amount of space occupied in a object
Other Questions
Light and sound waves both share what characteristic?A: they both exhibit the doppler effectB: light and sound are both transverse wavesC: they both move fastest in waterD: light and sound both require medium in which to travel WILL GIVE BRAINLIEST!!!!!!Which evidence best shows that Joe has changed from the beginning of the passage to the end of the passage?(A) As Joe listened to his brothers version of the story, he did his best to not react, but he could feel his face getting warm.(B) Joe sighed. He was confident that Gram would ask him to share the facts he had about the events from earlier in the afternoon.(C) Joe didnt feel bad at all for speaking his mind. In fact, he was surprised how easy it was to stand strong.(D) Joes heart began to race. Could he really bring himself to leave Perry there to face his own fate? 3.The daily surface concentration of carbonyl sulfide on the Indian Ocean is normally distributed, with a mean of 9.1 picomoles per liter and a standard deviation of 3.5 picomoles per liter. Find the probability that on a randomly selected day, the surface concentration of carbonyl sulfide on the Indian Ocean is less than 13.5 picomoles per liter. If q(x)=4/5x-9, find the value of x so that the function has the given value of q(x)=3 About what percent of whites owned slaves or belonged to a family who owned slaves?25%50%95%75% A motorcycle can reach a speed of 60 mi/hr much faster than a minivan can Walking is not the most exciting form of exercise a person can take on for fitness. Yet it is low impact and requires no fancy equipment. That makes walking a simpleactivity for those new to exercise. Walking is less likely than other exercises to cause injury to leg tendons and muscles. All it requires is a good pair of sneakers-nocables, stylish outfits, or weights required of course, a person could increase the benefit of a workout by adding weights or speed walking.Identify the main idea of this paragraph.Walking is a difficult andexercise for beginnersO Walking is an easy and safe exercise for beginners.O Walking is a boring and dangerous form of exercise.O Walking is an exciting and very effective form of exercise A number m plus 4 is greater than or equal to 7. What is the most likely connotation of the word immature in the following sentence? Now that she is 12 years old, Drea's immature behavior is becoming more and more obvious. A. A positive connotation that means Drea has youthful energy B. A negative connotation that means Drea should act older C. A negative connotation that means Drea craves attention D. A positive connotation that means Drea is childishly innocent I need some answers pls and Google isnt helping? Use the simple interest formula to find the ending balance.$4000 at 6.5% for 5 years.Enter your answer in the box. Which of the following titles are examples of nonfiction? A: The Everglades and Santa Paws B: The People's Republic of China and The Everglades C: The Wizard of Oz and The Mystery of the Purple Pirates D: The History of The XYZ Car Rental Agency charges aflat rate of $39 per day plus $0.47 per mile driven.Write an algebraic expression for the rental cost of acar for x days that is driven y miles. 2 Co + 3 H2O Co2O3 + 3 H2List all of the elements in this equation Any one know the answer? Sky lantern is popular in the country of Let x be Bob's age. Heather is 5 years younger than Bob. Write an expression for Heather's age. Use the drop-down menus and your knowledge of prefixes to choose the correct word in each sentence.After completing my test, I wanted to______(review, preview) all my answers.He thought the question did not make sense and was very______(logical, illogical)Each jump on the bed made the mattress more_______(depressed, repressed) The snack bar at the school purchases water bottles at wholesale and then marks them up to make a profit. It marks up the water bottles by 33 and one-third percent, an amount of $0.28. What was the wholesale price of each water bottle? 3. What was the outcome of China's Age of Exploration?