Chemistry High School

HELP MEEEEE PLEASEEEE​

HELP MEEEEE PLEASEEEE

Answers

Answer 1
okay lol


shshjshdjajhs

Related Questions

Why can't krypton and xenon separate during the separation of gases in the air?

Answers

Answer:

The remaining gas is a mixture of argon, neon, krypton, and xenon. Because these elements are chemically very unreactive, chemical means cannot be used to separate them.

Explanation:

Answer:

They're in Group 0 as they have full outer shells meaning they are chemically unreactive as they already have full outer shells meaning they don't want to lose or gain any electrons. Thus, they can't separate during the separation of gases in the air.

Sorah, Sammie,Victor, Vicki, ond Valerie are in math group. Two students are randomly picked to
be the co-captains. What is the probability thote students were ssmmie and Victor?​

Answers

Answer:

[tex]\frac{2}{5}[/tex]

Explanation:

Probability refers to chances of occurrence of any event.

Value of probability is greater than or equal to 0 and less than or equal to 1.

Probability = Number of favorable outcomes ÷ Total number of outcomes

Total number of students in math group = 5

Also, 2 students are randomly picked to  be the co-captains.

Probability that students were Sammie and Victor = [tex]\frac{2}{5}[/tex]

what is chemical composition of the atmosphere

Answers

Answer:

nitrogen 78%, Oxygen 21%, Argon 0.9%, Carbon dioxide 0.03%, water 0-4%(depends)

Explanation:

Answer:

definition: The atmosphere is composed of a mix of several different gases in differing amounts. The permanent gases whose percentages do not change from day to day are nitrogen, oxygen and argon. Nitrogen accounts for 78% of the atmosphere, oxygen 21% and argon 0.9%.

Explanation:

Nitrogen accounts for 78% of the atmosphere, oxygen 21% and argon 0.9%. Gases like carbon dioxide, nitrous oxides, methane, and ozone are trace gases that account for about a tenth of one percent of the atmosphere.

Layers of the atmosphere:

- From lowest to highest, the major layers are the troposphere, stratosphere, mesosphere, thermosphere and exosphere

Electrons can occur only in specific

Answers

Answer: Electrons have wavelike motion and are restricted to certain energy states associated with specific wavelengths.

Why are electrons restricted to certain, discrete energy levels with an atom? Electrons have wavelike motion and are restricted to certain energy states associated with specific wavelengths.

what’s the difference between 2o and o(subscript 2)?

Answers

Answer:

2O is an atom while O2 Is a molecule

What is the main process by which water moves from land to the atmosphere?

Answers

Answer:

isn't that evaporation if not you can just delete my answer-

Explanation:

How many moles of gas are in a 30 liter scuba canister if the temperature
of the canister is 300 K and the pressure is 200 atmospheres?

Answers

Answer: the answer is n= 0.487 mol

Explanation: i took the test and got it right

A behavioral adaptation when an animal becomes inactive in the winter is _____.
A. hibernation
B. camouflage
C. migration
D.sleeping

Answers

Answer:

A. hibernation

Answer:

Hibernation.

Explanation:

How many moles of potassium are needed to react completely with 7.50 mol of chromium (III) oxide? Show work.

Answers

Answer:

45 mol

Explanation:

First you need to balance the equation:

6K + Cr2O3 = 3K2O + 2Cr

the proportion of the coeficients of potassium and chromium oxide is 6 to 1 so we need to multiply 7.5 by 6 to get 45.

How much KNO3 can be dissolved at 50 C in 100g of water?

Answers

Answer:

Initially there is 100 g of potassium nitrate in solution, at 50 °C the solubility is 84 g/100g (original data or graph), so 16 g will have crystallised out

Explanation:

9. Which of the following is a chemical property of water at 4°C? its temperature its state its color

Answers

its ability to decompose into hydrogen and oxygen

well i just had a major PTSD attack how is everyone i need to think about something else

Answers

Answer:

Oh so so sorry about that. and thanks for caring for us. anyway we are good wbu

Explanation:

im good. i just ate applesauce lol :)

PLEASE ANSWER IF ITS CORRECT I WILL MARK IT AS BRAINLIEST PLZ??

What do you think would happen if the temperature of a gas is higher than the other when applying Graham's Law? *
A) There will be no effect on the gas
B) The kinetic energy of the gas particles would increase
C) The volume of the gas particles would increase

Answers

Answer:

There will not be effect on the gas

Explanation:

I'm sure that it's correct answer

The following equation represents what type of chemical reaction?

2Ag + H2S → Ag2S + H2

A. Double Replacement
B. Single Replacement
C. Decomposition
D. Synthesis

Answers

Answer:

single replacement

Explanation: N/A

What is it about the structure of magnesium atoms that makes them react more slowly than sodium atoms?

Answers

Answer:

A reactive metal has the ability to easily lose an electron and acquire a positive charge. Sodium easily loses electrons and acquires a positive charge. Sodium easily lose electrons than magnesium and get oxidized to easily.

Explanation:

explain the trend in boiling parts of the halogen

Answers

Answer:

The boiling point of the halogens increases as you go down the group. The halogens exist as diatomic molecules, with both atoms sharing an electron to completely fill the outer shell. The increase in boiling (and melting point) can be attributed to the increase in intermolecular forces (van der Waals).tion:

2) Where is Earth, exactly? Use this image to find our location. Earth is
Located in the

A) Norma arm
B) Outer arm
C) Orion spur.
D) Galactic bar

Answers

Answer:

C) Orion spur.

The Orion Arm is a minor spiral arm of the Milky Way Galaxy that is 3,500 light-years across and approximately 10,000 light-years in length, containing the Solar System, including Earth.

hey y’all, I’m growing a plant for science class but I need some questions about the plant, can someone please give me atleast 3 questions to answer for it.. can you give me atleast one tricky one

Hurry pls <3

Answers

Answer:

What type of plant

Where is it mainly found

What are some facts about it?

1.
what can noble gases be used for?

2.
what is a vertical column called in the periodic table

3.
what is the horizontal column in the periodic table

Answers

1. Noble gases are used protect materials and prevent chemical reactions.

2. Groups

3. Rows

Answer:

1. They are mostly used to protect materials and prevent chemical reactions.

2.These are Groups

3. I guess it is Rows

two oxides, X and Y are added seperately to dilute sulfuric acid and dilute sodium hydroxide. X reacts with dilute sulfuric acid but Y does not react. Y reacts with aqueous sodium hydroxide but X does not react. which type of oxide are X and Y ?

Answers

Answer:

c

Explanation:

x basic and metallic while y is acidic

The study of chemicals is called chemistry.

The correct answer is B.

The compound which has oxygen in it is called oxide. According to the question, the element is react with the acid and base.

The X only reacts with the acidic compound but not basic compound hence the element X is basic in nature. while Y only reacts with the basic compound, not X, hence the Y element is acidic in nature.

Therefore, the correct answer is B.

For more information, refer to the link:-

https://brainly.com/question/14698383

True/False. A program is an algorithm that has been coded into something that can be run by a machine. *

Answers

Answer:

true

Explanation:

1. Which type of matter has the molecules packed closer together?
a. Solid
b. Liquid
c. Gas
d. Plasma
2. Matter is made up of __________.
a. Molecules
b. Particles
c. Atom
d. All of them
3. Particles with more energy move ________ than particles with less
energy.
a. Slower and closer together
b. Slower and farther apart
c. Faster and farther apart
d. Faster and closer together
4. Which best describes the particles in a liquid?
a. More freely moving than a gas
b. More freely moving than a
solid
c. Less freely moving than a
solid
d. Completely unmoving
5. Which of the following statements describes a mass?
a. The force of attraction between two bodies.
b. The force of gravity exerts on a body of mass.
c. The amount of matter in an object.
d. The weight of the object from place to place.

Answers

Answer:

1. Which type of matter has the molecules packed closer together?

a. Solid

2. Matter is made up of _________.

d. All of them

3. Particles with more energy move ________ than particles with less

energy.

c. Faster and farther apart

4. Which best describes the particles in a liquid?

b. More freely moving than a solid

5. Which of the following statements describes a mass?

c. The amount of matter in an object.

A new element, Thorsonium, has two isotopes. Thorsonium isotopes have a mass of 255 amu and 257 amu. Given the average atomic mass of Thorsonium is 255.65 amu, calculate the percent abundance for each Thorsonium isotope.

Answers

Answer:

255 amu has relative abundance 67.5% and 257 has relative abundance 32.5%

Explanation:

Average atomic mass =sum of product of atomic mass and relative abundance all divided by hundred or total abundance

R4te me for 10 points and be honest with me PLEASE

Answers

Answer:

id give you and 8 or 9 but you are really pretty tho

Explanation:

i give you an 7 i am being honest i was gonna give you a 6 but then your hair is pretty

A temperature of 37C is equivalent to a temperature of

Answers

answer 98.6 Fahrenheit

Answer:

98.6 Degrees Fahrenheit

Explanation:

To convert from Celsius to Fahrenheit, the formula is F=(1.8*C)+32. Since C=37 in this case, our formula is F=(1.8*37)+32. First, solving the work in the parentheses, 1.8*37=66.6. Adding that will get you to 98.6, so F=98.6.

6. Which change to a population would cause
increased competition among
its members?
SC.7.L.17.3
ES
an increase in population size
B a decrease in population size
© an increase in predation on the
population
D an increase of disease in the population

Answers

Answer:

B

Explanation:

Because I said so

How many moles are in 435 grams of sulfur, S?

Answers

Answer:

32.065 is the correct answer.

find the pH of a 0.79 M solution of NH3,a weak base,if it has a Kb of 4*10 -5

Answers

Answer:

Cat

Explanation:

Bcuz I said so that it's a cat

Balance the equation Ag2O ->Ag + O2​

Answers

Answer:

For balancing this equation

we need to put

Ag2O. = 2

Ag = 4

O2 = 1

Hope it will help

The balanced chemical equation of decomposition of silver oxide is 2 Ag₂O -> 4 Ag + O₂.

What is chemical equation?

Chemical equation is a symbolic representation of a chemical reaction which is written in the form of symbols and chemical formulas.The reactants are present on the left hand side while the products are present on the right hand side.

A plus sign is present between reactants and products if they are more than one in any case and an arrow is present pointing towards the product side which indicates the direction of the reaction .There are coefficients present next to the chemical symbols and formulas .

The first chemical equation was put forth by Jean Beguin in 1615.By making use of chemical equations the direction of reaction ,state of reactants and products can be stated. In the chemical equations even the temperature to be maintained and catalyst can be mentioned.

Learn more about chemical equation,here:

https://brainly.com/question/28294176

#SPJ5

Elaborate on the nuclear model of the atom. The nuclear model describes the atom as protons and neutrons distributed throughout a sea of electrons. The nuclear model describes the atom as electrons uniformly scattered in a positive cloud of protons. Eliminate The nuclear model describes the atom as a small, negative center enveloped by a cloud of positive particles. The nuclear model describes the atom as a dense, positive nucleus surrounded by a cloud of negative electrons.

Answers

Answer:

D.) The nuclear model describes the atom as a dense, positive nucleus surrounded by a cloud of negative electrons.

Answer

The nuclear model describes the atom as a dense, positive nucleus surrounded by a cloud of negative electrons.

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Write an equation for the nth term of the arithmetic sequence.17, 12, 7, 2, ...an= What might cause an individual's perspective tochange over time? Check any of the boxes thatyou agree withthe acquisition of new knowledgepersonal experiencesworld eventschanging timesDONE What is the radius and diameter of the following circle? A university considers giving only pass/fail grades to freshmen to reduce competition and stress. The student newspaper interviews faculty members and reports their opinions of the proposed policy. Suppose that 70% of the faculty favor the pass/fail proposal. Assuming 50 faculty members are interviewed. The goal is to find the probability that a majority (26 or more) will favor the proposal. Katie picked 25 carrots from her garden and divided them equally into 5 bunches to give to her neighbors. How many carrots are in each bunch? what is number 1 answered and 2 answers How did the National Assembly reform France Exercise 12.1r. (1) 5x 3 = 3x - 5.(1) 5y - 2[y - 3(y 5)] = 6 . A boy wishes to throw a ball through a house via two small openings, one in the front and the other in the back window, the second window being directly behind the first. If the boy stands at a distance of 5m in front of the house and the house is 6m deep and if the opening in the front window is 5m above him and that in the back window 2m higher, calculate the velocity and the angle of projection of the ball that will enable him to accomplish his desire. simplify the first expression 5(m+1)-1= Which is an accurate comparison of the North and South by 1850?Slave labor was gradually becoming less important in the South but more important in the North.Industry became increasingly important to the economy of the South, while the North relied on agriculture.The economies of the North and South both relied on industry to process many goods for the country.Industry became increasingly important to the economy of the North, while the South relied on agriculture. what is the difference of 20 and 3 So um meet Sylvester my lazy, crazy cat. I also have a bearded dragon but i don't wanna wake him up because he is sleeping. His name is Roxas Do you guys have any pets? Can someone help me please ? a woman spent 3/5 of her weekly salary on rent and 25% of her weekly salary on food. Her food cost $2500. How much did she spend on rent Match each definition with the term it describes. A(n) ______ provides identification and addressing information for computers and devices on a network. A(n) ________ is a network that covers an area of less than a mile. The Internet is an example of a(n) ______. Which of these was a goal of the First Crusade?to halt the spread of Muslim ruleto convince the Muslims to rule Jerusalem jointlyto destroy the city of Jerusalemto force the Muslims to leave Constantinople Store A sells 12 juice bottles for $4 and store B sells 18 juice bottles for $6. Are these rates equivalent? Explain your reasoning. Priyanka drives at 45km/h and reaches Delhi in 5 hours.What time will she take to complete the same journey if she increases her speed by 5km/h ? Can someone help please