Chemistry High School

I NEED HELP !!! PLEASE I AM TIMED !! :(( Will mark brainliest i need the right answer these finals killing me... especially chem

I NEED HELP !!! PLEASE I AM TIMED !! :(( Will Mark Brainliest I Need The Right Answer These Finals Killing

Answers

Answer 1

Answer:

its d

Explanation:

Answer 2

Answer: it is D

step by step

Related Questions

What element do you think would easily react with Calcium? Why?

Answers

Answer:

On heating, calcium reacts with hydrogen, halogens, boron, sulfur, carbon, and phosphorus.

Explanation:

Electron configuration: 1s22s22p63s23p64s2

Atomic number: 20

Atomic weight: 40.078

Oxidation state: +2

FIRST ONE TO RESPOND CORRECTLY GET BRAINLESS

Answers

Answer:

sorry but we can't answer without the  pic

Explanation:

Mole Conversion: How many molecules are in 0.348 moles of Dihydrogen oxide? ​

Answers

The answer is : 28.01 .. I know this because I just did this !

3 biotic and 3 abiotic thing that are in the ocean and list 10 differnt anamals that live in the ocean

Answers

Answer:

abiotic - water, rocks, and oxygen

biotic - fish, turtles, and starfish

animals - shellfish, dolphins, sharks, whales, octopus, seal, squid, crab, seahorses, and sea lions.

Explanation:

have a great day!!

name the process of separating into immiseible liquid?​

Answers

Answer:

Decantation

Explanation:

Decantation is a process for the separation of mixtures of immiscible liquids or of a liquid and a solid mixture such as a suspension.

What is the molar mass of a substance?
ОООО
the mass in grams of one mole of a substance
the number of particles in one gram of a substance
the number of moles in one gram of a substance
the mass in grams of one particle of a substance

Answers

oops pls forgive me I accidentally did the wrong question.

balance this equation​

Answers

Balanced equation

2Pb(NO₃)₂⇒2PbO+4NO₂+O₂

Further explanation

Given

Reaction

Pb(NO₃)₂⇒PbO+NO₂+O₂

Required

Balanced equation

Solution

Give coefficient

Pb(NO₃)₂⇒aPbO+bNO₂+cO₂

Make equation

Pb, left=1, right=a⇒a=1

N, left=2, right=b⇒b=2

O, left=6, right=a+2b+2c⇒6=1+2.2+2c⇒6=5+2c⇒1=2c⇒c=1/2

The reaction becomes :

Pb(NO₃)₂⇒PbO+2NO₂+1/2O₂ x2

2Pb(NO₃)₂⇒2PbO+4NO₂+O₂

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Answers

Answer:

A

Explanation:

The correct answer is: A

(Also can you mark me as brainliest please I really need it)

Complete the following reaction.






Answers

Answer:

14C6(1st one)

Explanation:

by balancing the reaction on the right and left,the right side miss 6 from number of proton and 14 from mass number....

Where does the second stage of cellular respiration
occur?
W
Х
Y
Z
Please hurry this is a test

Answers

Answer:

X is your answer Have a good day

Explanation:

The pyruvate molecules from glycolysis next enter the matrix of a mitochondrion. That's where the second stage of cellular respiration takes place. This stage is called the Krebs cycle. During this stage, two more molecules of ATP are produced

Answer:

z

Explanation:

how does newton’s third law effect bowling?

Answers

Answer:

The bowling ball will remain in motion until an unbalanced force acts on the bowling ball. ... When the ball hits the pins, they push on the ball with the same amount of force in the opposite direction. This means that the ball will slow down, and the pins will fall, which is the reaction.

Explanation:

Answer: His third law states that for every action (force) in nature there is an equal and opposite reaction. In other words, if object A exerts a force on object B, then object B also exerts an equal and opposite force on object A. Notice that the forces are exerted on different objects.

Explanation: this means that when you throw the ball the wind pushes against the ball and so does the bolling pints.

What is the total number of sulfur atoms in Mg2(SO4)3​

Answers

AnswerElement Symbol # of Atoms

Magnesium Mg 1

Oxygen O 4

Sulfur S 1

:

Explanation:

Please answer correctly !!!!!!!!!!! Will mark brainliest !!!!!!!!!!!!!!!!!!

Answers

Answer:

C

Explanation:

Hope this helps Mrs. or Sir

What Is the smallest functional and structural unit of all living organisms

Answers

Answer:

A Cell

Explanation:

Answer:

Cell

Explanation:

The cell is the smallest structural and functional unit in living organisms that can live on its own. It is also considered the building block of creation.

Which types of bonds are responsible for a material's high thermal conductivity ?
A. Ionic bonding
B. Covalent bonding
C. Metallic bonding
D. Gaseous bonding

Answers

Answer:

b

Explanation:

The answer is a I think

How many moles contain 9.15 x 1022 atoms of Ag?
Select the correct response.
0.152 mol
9.15 mol
0.325 mol
5.51 mol

Answers

Answer:

0.152 mol

Explanation:

To find the number of moles in a substance given it's number of entities we use the formula

[tex]n = \frac{N}{L} \\[/tex]

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question we have

[tex]n = \frac{9.15 \times {10}^{22} }{6.02 \times {10}^{23} } \\ = 0.151993...[/tex]

We have the final answer as

0.152 moles

Hope this helps you

2 questions Help need asap help thank you so 80 points and branliest random answers are reported plus deleted questions are in picture it’s for science retaking a test

Answers

both answers are a :) hope this helps

If a calcium atom can give off two electrons in a reaction with
nitrogen, which of the following formulas represent the
compound formed?
a CaN2
b Can
c Ca3N2
d None of the above

Answers

Answer:

c.  Ca3N2

Explanation:

A cube of zinc at 15.C is placed in contact with a cube of tin at 45. Which statement describes the initial flow of heat between the cubes? *

Answers

The correct option is A

Will mark brainliest
Changing which factor would NOT have an influence on the kinetic energy of a moving van loaded with 100 kg bags mulch of with a total mass of 1,500 kg. The vehicle is traveling across an open parking lot at a speed of 5 m/s.

Question 5 options:

direction the moving van is going across the parking lot.


increasing the rate of speed without altering the mass of the vehicle or its contents.


adding more contents (increasing the overall mass) to the van while the van is in motion traveling 5 m/s.


emptying the moving van one bag at a time at a constant rate.

Answers

Answer: the first option

Explanation:

Direction has nothing to do with the speed/ kinetic energy

Answer: A

Explanation:

Which phrase best describes the composition of Earth’s surface?
mostly water and some solid rock
mostly solid rock and some water
mostly liquid rock and some water
mostly water and some liquid rock

Answers

Answer:

??

Explanation:

In an ecosystem animals compete for all factors, except?

A.) Water
B.) Toilet Paper
C.) Food
D.) Sunlight

Answers

The answer would be B toilet paper. That is because they do not use toilet paper.

What is the chemical name of the fruit orange

Answers

Answer:

The chemical name is C16H11N2NaO4S

Explanation:

The chemical name is C16H11N2NaO4
Plz make me the brainliest

1) h2+o2 -> h2o

does equation 1 follow the law of conservation of mass? how can you tell?

Answers

Answer:

The given equation not following the law of conservation of mass.

Explanation:

H₂ + O₂ →  H₂ O

The number of oxygen atoms on both side of equation are not equal thus mass is not conserved and this equation not follow the this law.

Law of conservation of mass:

According to the law of conservation mass, mass can neither be created nor destroyed in a chemical equation.

Explanation:

This law was given by French chemist  Antoine Lavoisier in 1789. According to this law mass of reactant and mass of product must be equal, because masses are not created or destroyed in a chemical reaction.

2H₂ + O₂ →  2H₂ O

there are two oxygen atoms and four hydrogen atoms on the both side of equation so this reaction followed the law of conservation of mass.

Sodium-22 has a half-life of 10 hours. how much sodium-22 will remain in a 80.0 g sample after 50 hours?

# of half lives
grams remaining

​

Answers

Answer:

you would need to times the equation

Explanation:

Which of the following is true about electrostatic forces? Check all that are true:
Like Gravity, electrostatic forces always attract
An atom with an equal number of protons and electrons can pull with an electrostatic force
An ion with a negative charge will repel another ion with a negative charge
Electrostatic forces are a fundamental force in the universe

Answers

Answer:

Option 3 or C An ion is all in Electrostatic forces so it's c if its not I'll work it out for you

An ion with a negative charge will repel another ion with a negative charge is the correct statement.

What is electrostatic forces?

The electrostatic force is the force that exists between electrically charged particles or objects at rest means that objects having similar charge repel each other whereas objects having different charges attract each other.

An ion with a negative charge will repel another ion with a negative charge is the statement true about electrostatic forces because electrostatic force always occur between static object having charges on it.

Learn more about force here: https://brainly.com/question/12970081

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Answers

Answer C because the earths tilt causes the seasons

Consider the compound Al(OH)3. What type of
solid does it form?
crystal lattice
glass
metal
molecule

Answers

Answer:

crystal lattice

Explanation:

The Aluminium Hydroxide forms a crystal lattice solid structure, the correct option is A.

What is a Crystal Lattice?

The symmetrical, three-dimensional structural configuration of points representing atoms, ions, or molecules that make up a crystalline material is known as the crystal lattice.

It can be described as the geometrical arrangement of the crystalline solid's atoms, ions, or molecules as points in space.

Al(OH)3 is called Aluminium hydroxide, It is found in nature as the mineral gibbsite.

It is an amorphous white powder and is insoluble in water but soluble in acidic and alkaline solutions.

It can be used to relieve indigestion and stomach discomfort.

Al(OH)₃ is composed of two layers of hydroxyl groups, with aluminum ions filling two-thirds of the octahedral holes in the center of the structure.

There are four identified polymorphs. Each has layers of octahedral aluminum hydroxide units connected by hydrogen bonds.

So, the solid form of the compound Al(OH)₃ has a crystal lattice structure.

To know more about Crystal Lattice

https://brainly.com/question/10281663

#SPJ6

Is there currently a cure for HIV

Answers

Answer:

No

Explanation:

There are vaccines, to prevent it, made by Dr. Fauci, but no cure

Please help me out I need to know what the two atoms have in common.

Answers

Answer:

I think it's atomic number?

Explanation:

Really sorry if that's wrong

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A ratio of shirts to belts in a persons closet is 3:2 if there are 24 shirts in the closet how many belts are in the closet? help ASAP TRUE OR FALSE QUESTION plz do in based of angle and side belliam answer2+9-56+ Shelby Cabinets, Inc. produces custom cabinets. The following inventory balances appeared on its balance sheet.12/31/201212/31/2011Raw materials inventory$ 8,000$ 10,000Work-in-process inventory600,000550,000Finished goods inventory350,000410,000Shelby Cabinets had $1,265,000 in sales for the year ended December 31, 2012. The company also had the following costs for the year:Selling$ 90,000General and administrative$240,000Raw materials purchases$100,000Direct labor used in production$125,000Manufacturing overhead$630,000Of the total raw materials placed in production for the year, $12,000 was for indirect materials and must be deducted to find direct materials placed in production.Using the above information, what was Shelbys Cost of Goods Sold?(Hint: You must first calculate the Cost of Goods Manufactured before calculating Cost of Goods Sold.)Group of answer choices$795,000$845,000$855,000$1,395,000 3. How doesDorothyreact toPalmer'sexplanationof what isgoing tohappen tothe birds onPigeonDay? How did the delelopment of the 2nd party system impact American politics? What do you feel are the positive and negative aspects of it as they relate to our government today? Can somebody plz answer this Ms. Quan correctly question lm.aoo thanksWILL MARK BRAINLIEST The prevalence of a certain disease is 0.09. A diagnostic test has been developed to test for the disease in question which returns a positive reading with probability 0.9 amongst those where it is known they have the disease and returns a negative result with probability 0.96 for those that are known not to have the disease. A person is suspected to have the disease, takes the test and the test comes back positive. What is the probability that they have the disease given that the test came back positive ? 20. Identify which of the following actions is a "do" of dating Where is the x and y axis on a graph? Please take it seriously!EXAMIdentify ALL the Hindu Beliefs. God is Formless and found everywhere. Only a priest can speak directly to God. The world is not real. It is an illusion that simply feels very real. We live only once. PLEASE!!! 1.-All of the following are phases (states)of matter EXCEPT:A.- solidB.- liquidC.- gasD.-putty2.-Water is different from other substances because:A.- It is more dense as a solid than a liquid B.- It is less dense as a solid than liquidC.- it is more dense as a gas than a liquidD.- It is less dense as a solid than a gas 3.-This matter has a fixed shape andvolume with particles closely packed together with little movement. It is a:A.- liquidB.-solidC.- gasD.- plasma4.-Matter changing from a solid to a liquid is called:A .-evaporationB.- sublimationC .-depositionD.- melting5.-The melting point of water is:A.- 0CB .-100CC.- 32CD.- 60C6.-Water is different from other substances because:A.- It is more dense as a solid than a liquid B.- It is less dense as a solid than liquidC.- it is more dense as a gas than a liquid D.- It is less dense as a solid than a gas 7.-Which of the following substances hasa higher melting point than water?A.- saltB.- sugarC.- flourD.- all of the above8.-Which of the following is NOT a way that matter changes phase?A.- meltingB.- freezingC.- evaporationD.- mixing9.-Matter changing from a solid to a gas is called:A.- evaporationB .-sublimationC.- depositionD.- meltingPhases of Matter - Vocabulary Quiz 10-15: Name the six ways the phase (state) of matter changes:10. _____________________11.______________________12.______________________13.______________________14.______________________16.______________________Review Important Points about Phases of Matter16) What is matter? _____________________________________________________________________________________ 17) Name the three phases (states) of matter? _____________________________________________________________________________________18) Identify and describe the particle in each phase of matter and how they are different in each phase of matter. What event marked the end of Native Americans traveling outside of Indian Territory, as well as the end of the Plains Wars? What is the heritage and/or history of place names in Canada? What is a label for a piece of information used in a program called? Which expression is equal to 48+ 72 In the inequality, 3x>9, can x=3?Yes or no And adopt blinks about 450 times in 30 minutes a 12 year old blinks about 150 times in 15 minutes how many more times does an adult blink in 60 minutes then a 12 year old please help!!The solution of the equation is x = ?.