Chemistry High School

HELP ME WOTH QUESTION BELOW PLEASE​

HELP ME WOTH QUESTION BELOW PLEASE

Answers

Answer 1

tip

this is just a tip not the true answer but try to add the given number

Related Questions

In the following reaction, the partial
pressure at equilibrium for each of the
products, CO and water vapor at 990°
C, is 11.0 atm and the partial pressure
for each of the reactants, H2 and CO2,
at equilibrium is 8.70 atm. What is Kp?
H2(g) + CO2(g) + H2O(g) + CO(g)
Kp = [?]

Answers

Answer:

H2+CO2=H2O+CO

Kp=(pCO)(pH2O)/(pH2)(pCO2)

= 11×11/8.70×8.70

=1.60

11. Why does cotton absorb so much water?
a. Cotton is adhesive to the water molecules
b. The polarity of water allows it to dissolve cotton.
C. Cotton has hollow fibers that absorb by capillary action
d. Cotton is cohesive to the cotton fibers

Answers

Answer:

c

Explanation:

Kathy is trying to conduct an experiment she wants an element that is
very reactive, which of these should she use?

Answers

we need choices to be able to answer this question


STEP BY STEP EXPLANATION:

Blank is the area of physical science that studies energy and how it acts with matter

Answers

Answer:

Physics is a natural science that involves the study of matter and its motion through space and time, along with related concepts such as energy and force. More broadly, it is the study of nature in an attempt to understand how the universe behaves.

Explanation:

need the answer to this

Answers

Answer:

don't see anything

Explanation:

repost it

What do you predict might happen if groundwater sources around the world continue to be depleted faster than they are restored?
I'll mark brainliest!

Answers

Pumping groundwater faster than it can recharge can lead to dry wells, especially during droughts.
Hope this helps!

A boy is skating down the street, hits a curb, and files off the board. Why did this happened? Can y’all plz help me it’s due today!

Answers

Answer:

to much sause

Explanation:

A gaseous mixture containing 1.5 mol of Ar and 3.5 mol of CO2 has a total pressure of 7.0 atm . What is the partial pressure of CO2.

Answers

Answer:

4.9 atm

Explanation:

Given:

Total pressure = 7.0 atm

(Total number of moles)=[ (1.5 mol arg) + (3.5 mol co2) ]

= 5 moles

Let Partial pressure of CO2 gas = P(CO2)

✓✓partial pressure of CO2 can be calculated using below expresion.

P(CO2) / Total pressure = (moles of CO2 gas) / Total number of moles

✓✓ Let us substitute the values into the above expresion.

[P(CO2) / 7.0 atm ] = [3.5 mol / 5 moles]

P(CO2)= [7 atm × 3.5 moles] / [5 moles]

= 4.9 atm

Hence, the partial pressure of CO2 is 4.9 atm

Answer:

Partial pressure of CO₂ = 4.9 atm

Explanation:

From the question given above, the following data were obtained:

Mole of Ar = 1.5 moles

Mole of CO₂ = 3.5 moles

Total pressure (Pₜ) = 7.0 atm

Partial pressure of CO₂ =?

Next, we shall determine the mole fraction of CO2. This can be obtained as follow:

Mole of Ar = 1.5 moles

Mole of CO₂ = 3.5 moles

Total mole = 1.5 + 3.5

Total mole = 5 mole

Mole fraction of CO₂ = mole of CO₂ / total mole

Mole fraction of CO₂ = 3.5 / 5

Mole fraction of CO₂ = 0.7

Finally, we shall determine the partial pressure of CO₂. This can be obtained as follow:

Total pressure (Pₜ) = 7.0 atm

Mole fraction of CO₂ = 0.7

Partial pressure of CO₂ =?

Partial pressure of CO₂ = mole fraction of CO₂ × total pressure

Partial pressure of CO₂ = 0.7 × 7

Partial pressure of CO₂ = 4.9 atm

explain why it is important to eat the wet sand before heating the iron wool​

Answers

Answer:

huh,eat wet sand b4heating iron wool??

50 POINTS PLEASE ANSWER CORRECTLY
What happens to the momentum of two cars when they collide?

A. The total momentum after the collision increases.

B. The total momentum after the collision decreases.

C. The total momentum after the collision is equal to the total momentum before the collision.

D. The total momentum before and after the collision is not conserved.

Answers

Answer: I honestly think it might be C

Explanation: Collisions between objects are governed by laws of momentum and energy. When a collision occurs in an isolated system, the total momentum of the system of objects is conserved. ... In the collision between the two cars, total system momentum is conserved.

Answer: C. The total momentum after the collision is equal to the total momentum before the collision.

Hope this helps

Explanation: Collisions between objects are governed by laws of momentum and energy. When a collision occurs in an isolated system, the total momentum of the system of objects is conserved. ... In the collision between the two cars, total system momentum is conserved.

4. Identify What do scientists call a substance that forms during a chemical reaction?
5. Identify On what side of the equation are reactants found?

Answers

Answer:

4. Reactant

5. Left

I hope this helps ❤️❤️

What is the name of this compound?

C6H6-
C=O-
H

Answers

Answer: Benzaldahyde

Explanation: the C₆H₅- represents the substituted benzene ring and the

CHO should represent the functional group of aldehyde

Answer:

The name of the compound is benzaldehyde

Which chemical equation is a model of a decomposition reaction?

Answers

Answer:

The answer is C

It's a model of Decomposition reaction

How do you make the shadows of objects appear bigger on the screen​

Answers

Explanation:

Indoors, you can change the size of a shadow by moving your body or the object closer to or farther from the light.

Shadows grow bigger and fuzzier as the object moves closer to the light source, and smaller and sharper as the object moves farther away.

What is the oxidation state of copper in Cu(C2H3O2)2? +2 -1 -2 +4 +1

Answers

The answer should be 5 cu

solid liquid and gas is physical or chemical explain

Answers

Answer: Physical change

Explanation:  I said physical change because its changing the form of the substance and also solid to gas are sublimating

How many moles of CaCO3 are needed to dissolve in 0.600 liters to make a
2.25 M solution?
A 0.267 mol
B 3.77 mol
C 1.35 mol
D 2.43 mol

Answers

Answer:

1.35 moles of CaCO₃

Explanation:

Molarity, it is a sort of concentration that indicates the amount of moles in 1 L of solution.

M = mol /L

This is a simple equation

M = 2.25 M

Our volume is 0.6L

M . L = mol

Then, 2.25 mol/L . 0.6L = 1.35 moles

We need 1.35 moles of CaCO₃

Based on the periodic table, which of the following elements has properties most like neon’s?

A- Boron (B)
B- Hydrogen (H)
C- Fluorine (F)
D- Krypton (Kr)

Answers

Answer:

D. Krypton (Kr)

Explanation:

because

Neon and Krypton, both are belongs to Inert or Noble gas Group

D.krypton (Kr).............

What mass of iron (ciron= 0.11 cal/g°C) would need 1450 cal of energy in order to raise its temperature by 19.7°C

Answers

Answer: m=Q/c*\Delta TQ/c∗ΔT = 1450cal/(0.11cal/g* 19.7ºC)=669.12 g1450cal/(0.11cal/g∗19.7ºC)=669.12g

Answer: 669.12g iron.

Explanation:

34.56 + 42.235 x 0.0123 – 0.001

with correct sig figs

Answers

Answer: 35.078 to 3 significant figures

Explanation:

Solving;

34.56 + 42.235 * 0.0123 - 0.001

We solve the multiplication first according to the BODMAS rule.

So,

42.235 * 0.0123 = 0.51949

Doing the addition,

34.56 + 0.51949 - 0.001

This gives;

35.079 - 0.001

And finally the subtraction gives;

= 35.078

please help me with these questions, im not understanding :(

Answers

Answer:

this is all the answers i hope you have a good day

Explanation:

may i please have a branlliests

this is due in five mintues please help

Answers

Answer:

5

Explanation:

Na, N, O, O, O

What should you use to compare one substance with another substance in a reaction?

Answers

Answer:

metal or other acids

Explanation: hope u get it right

What are several ways that humans destroy an ecosystem?

Answers

Answer:

Some human activities that cause damage (either directly or indirectly) to the environment on a global scale include population growth, overconsumption, overexploitation, pollution, and deforestation, to name but a few.

Explanation:

Hope this helped!!!

3. How much energy is needed to raise 45 grams of water from 40°C to 115 °C?

The specific heat capacity of ice is 2.06 J/g °C

The specific heat capacity of water is 4.18 J/g °C

The specific heat capacity of steam is 2.02 J/g °C

The heat of fusion of water is 334 J/g

The heat of vaporization of water is 2260 J/g.

Answers

Answer:

Q = 114349.5 J

Explanation:

Hello there!

In this case, since this a problem in which we need to calculate the total heat of the described process, it turns out convenient to calculate it in three steps; the first one, associated to the heating of the liquid water from 40 °C to 100 °C, next the vaporization of liquid water to steam at constant 100 °C and finally the heating of steam from 100 °C to 115 °C. In such a way, we calculate each heat as shown below:

[tex]Q_1=45g*4.18\frac{J}{g\°C}*(100\°C-40\°C)=11286J\\\\Q_2=45g* 2260 \frac{J}{g} =101700J\\\\Q_3=45*2.02\frac{J}{g\°C}*(115\°C-100\°C)=1363.5J[/tex]

Thus, the total energy turns out to be:

[tex]Q_T=11286J+101700J+1363.5J\\\\Q_T=114349.5J[/tex]

Best regards!

the formulas of three important acids and three important bases and describe their uses.

Answers

Answer:

18929eu9sisjwiejwjxjjejxme

What number and types of atoms occur in a formula unit of
Ca(NO3),?

Answers

Answer:

help with mine ill help with yours

Answer:

1 calcium atom, 2 nitrogen atoms, and there are 6 oxygen atoms

Explanation:

Define the law of conservation of charge and provide an example.

Define opposite charges attract and like charges repel and provide an example.

Define Electricity along with an example.

Answers

Answer:

Conservation of Charge is the principle that the total electric charge in an isolated system never changes. The net quantity of electric charge, the amount of positive charge minus the amount of negative charge in the universe, is always conserved.

I NEED HELP THIS IS DUE TMR!
A 124.6-g sample of copper has a volume of 14 cm. what is the density of copper?

Answers

Answer:

The density of copper is 8.9 grams per cubic centimeter.

Explanation:

There is a writing mistake in statement, correct form is written below:

A 124.6 grams sample of copper has a volume of 14 cubic centimeters. What is the density of copper?

Let suppose that mass of the copper sample is distributed uniformly in its volume, then we shall use the following definition of density ([tex]\rho[/tex]), in grams per cubic centimeter:

[tex]\rho = \frac{m}{V}[/tex] (1)

Where:

[tex]m[/tex] - Mass, in grams.

[tex]V[/tex] - Volume, in cubic centimeters.

If we know that [tex]m = 124.6\,g[/tex] and [tex]V = 14\,cm^{3}[/tex], then the density of the sample of copper is:

[tex]\rho = \frac{m}{V}[/tex]

[tex]\rho = 8.9\,\frac{g}{cm^{3}}[/tex]

The density of copper is 8.9 grams per cubic centimeter.

What is the kinetic energy of a rock with a mass of 50 kg and a velocity of 30 m/s?

Answers

Answer:

100 thousand dollars bobvieijefn iojef

Explanation:

your mom gae

Other Questions
what is the word for a sequence of steps used to define and solve a problem Select all numbers that have an absolute value of 6.3. In which of these can convection not occurA. GasesB.solidsC.liquidsD.fluids PLEASE ANSWER QUICKLY Pls answer ASAP Ill give brainliest A group of 12 students participated in a dance competition. Their scores are below:Score (points)12345Number of Students12432Would a dot plot or a histogram best represent the data presented here? Why? (3 points) Group of answer choicesHistogram, because a large number of scores are reported as rangesHistogram, because a small number of scores are reported individuallyDot plot, because a large number of scores are reported as ranges Help me pls, tysm! I will give brainly if you give me the right answer, tysm! I need help on number 6 btw What is the area of the irregular figure below?A figure can be broken into a parallelogram and triangle. The parallelogram has a baes of 4 inches and height of 6 inches. The triangle has a base of 4 inches and height of 6 inches.36 Inches squared48 Inches squared144 Inches squared288 Inches squared HELP please!!What would the container look like for this depth vs height graph?? For this exercise, you will complete the TicTacToe Board that we started in the 2D Arrays Lesson.We will add a couple of methods to the TicTacToe class.To track whose turn it is, we will use a counter turn. This is already declared as a private instance variable.Create a getTurn method that returns the value of turn.Other methods to implement:printBoard()- This method should print the TicTacToe array onto the console. The board should include numbers that can help the user figure out which row and which column they are viewing at any given time. Sample output for this would be: 0 1 20 - - - 1 - - - 2 - - - pickLocation(int row, int col)- This method returns a boolean value that determines if the spot a user picks to put their piece is valid. A valid space is one where the row and column are within the size of the board, and there are no X or O values currently present.takeTurn(int row, int col)- This method adds an X or O to the array at position row,col depending on whose turn it is. If its an even turn, X should be added to the array, if its odd, O should be added. It also adds one to the value of turn.checkWin()- This method returns a boolean that determines if a user has won the game. This method uses three methods to make that check:checkCol- This checks if a player has three X or O values in a single column, and returns true if thats the case.checkRow - This checks if a player has three X or O values in a single row.checkDiag - This checks if a player has three X or O values diagonally.checkWin() only returns true if one of these three checks is true.public class TicTacToeTester{ public static void main(String[] args) { //This is to help you test your methods. Feel free to add code at the end to check //to see if your checkWin method works! TicTacToe game = new TicTacToe(); System.out.println("Initial Game Board:"); game.printBoard(); //Prints the first row of turns taken for(int row = 0; row < 3; row++) { if(game.pickLocation(0, row)) { game.takeTurn(0, row); } } System.out.println("\nAfter three turns:"); game.printBoard(); }}public class TicTacToe{ private int turn; private String[][] board = new String[3][3]; public TicTacToe() { for(int i = 0; i < 3; i++) { for(int j = 0; j < 3; j++) { board[i][j] = "-"; } } } //this method returns the current turn public int getTurn() { return turn; } /*This method prints out the board array on to the console */ public void printBoard() { } //This method returns true if space row, col is a valid space public boolean pickLocation(int row, int col) { return true; } //This method places an X or O at location row,col based on the int turn public void takeTurn(int row, int col) { } //This method returns a boolean that returns true if a row has three X or O's in a row public boolean checkRow() { return true; } //This method returns a boolean that returns true if a col has three X or O's public boolean checkCol() { return true; } //This method returns a boolean that returns true if either diagonal has three X or O's public boolean checkDiag() { return true; } //This method returns a boolean that checks if someone has won the game public boolean checkWin() { return true; }} Read the section "No More Human Error."Which sentence from the section shows why robot referees are better than human referees?ASimilar systems could handle calls in many different sports.BIt shouldn't have any favoritism toward certain teams or players.CFor example, they can manage a player who's upset or angry.DTennis matches usually have up to nine umpires. Why is CPR is been used? Convert 3.1415 x 10^-2 to standard notation. no links no links sssssdrerw What are are used to build enzymes PLASE HELP!!!!! IM DESPERATE Question 4Which expression represents f-(x) if f(x) = 11 10x ? Please help i will give brainliest and 5 * and 20 points for the best answerread the story and answer the two quetions1. What mood is conveyed by this excerpt?A. SuperiorB. DominantC. HopefulD. Heroic2. Read the following dictionary entryrestraint/rstrnt/ noun 1. ameasure or condition that keeps someone under control 2. depriving or restricting a person of freedom 3. a device which limits or prevents movement 4. self-controlWhich definition best matches the use of the word restraint?A. Definition 1B. Definition 2C. Definition 3D. Definition 4i don't want to see any linkif i do you will be reported Brainlyest FOR BEST ANSWER thank u The first one to get it right gets brainest.