helppppppp plzzzzzzz

Helppppppp Plzzzzzzz

Answers

Answer 1

Answer:

is this done on a chrombook? it looks like it pls i need points to get to 1000 points so please just leave my answer

Explanation:


Related Questions

Who was the leader of Iraq? *
Osama Bin Laden
Mikael Gorbachev
Şaddam Hussein

Answers

Answer: I believe it was Şaddam Hussein

Explanation:

Should couples wanting to start a family undergo genetic testing to minimize risk to their offspring

Answers

Answer:

Yes

Explanation:

The genetic testing is also called as the DNA testing. It is mainly used for identifying the changes in the DNA sequence or the chromosomes structure. It can also measure the results in the genetic changes.

Couples those who are planning to start a family should go for a genetic testing so as to minimize a risk in the upbringing or growth of their offspring. By doing a genetic testing a couple can well know the conditions of the baby that could affect them. The result from a genetic testing can help to plan better before starting a family. Therefore, it is advisable for couples to go for a genetic testing so that they plan better by knowing the conditions.

Find the w/w% of a solution that contains 10 grams of solute and 100 grams of solvent

Answers

Answer:

I think the w/w% of this question is 10.

The w/w% of a solution that contains 10 grams of solute and 100 grams of solvent is 9.09%

What is mass percentage % ?

Mass percentage is another name of w/w % or weight /weight % .

To determine the weight/weight % of a solution :

we divide the mass of solute by mass of the solution (solute and solvent together) and multiply by 100 to obtain per cent.

[tex]\dfrac{w}{w} \; \%\; =\;\rm\dfrac{mass \;of\; solute}{mass\; of \; solute\;+\;mass\;of\;solvent} \times 100[/tex]

It is given that , mass of solute = 10 grams and mass of solvent = 100 grams

So,

[tex]\dfrac{w}{w} \; \%\; =\;\rm\dfrac{10}{10+100} \times 100[/tex]

[tex]\dfrac{w}{w} \; \%\; =\;\rm\dfrac{10}{110} \times 100\\\\\dfrac{w}{w} \; \%\; =\;\rm\dfrac{100}{11}\\\\\dfrac{w}{w} \; \%\; =\; 9.09 \;\%[/tex]

The w/w% of a solution that contains 10 grams of solute and 100 grams of solvent is 9.09% .

To know more about mass percentage :

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2). A student collects 425 L of oxygen at a temperature of 24.0°C and a pressure
of 0.899 atm. How many moles of oxygen did the student collect?

Answers

Answer:

15.5 moles

Explanation:

Applying,

PV = nRT.................. Equation 1

Where P = pressure, V = Volume, n = number of mole, R = molar gas constant, T = Temperature.

Make n the subject of the equation

n = PV/RT............... Equation 2

From the question,

Given: P = 0.899 atm, V = 425 L, T = 24 °C = (273+24) K = 297 K.

Constant: R = 0.083 L.atm/K.mol

Substitute these values into equation 2

n = (0.899×425)/(297×0.083)

n = 15.5 moles

answer number 12 for me

Answers

Answer:

I believe its F: 2.55

Explanation:

I know I'm very late, positive you're past this question, I'd hope at least.

I NEED HELP FAST
Identify the charges that are negative
А
B

Answers

B and C are negative because the arrows are not pointing outward

How many moles of acetylene are needed to completely react with 16.5g of CO2

Answers

Answer:

0.375 mols

Explanation:

Relative atomic mass Ar of C=12×1=12Relative atomic mass Ar of O=16×2=32Realitive formula mass Mr is 12+32=44

mol:mass

1 : 44

x :16.5

cross multiply and get the answer

Please help me with this homework

Answers

Answer:

The answer is C density.

Which is NOT part of the male reproduction system of a flower? stamen pollen anther pistil​

Answers

Answer:

Pistil

Explanation:

I believe it is the pistil, because the pistil is part of the female reproductive system of a flower. A stamen is for the male reproductive system.

I also think it’s pistil

If 1.5 moles of NaC₂H₃O₂ are dissolved in 750g of water, what is the molality of this solution?
2.0m
1.5m
2.6m
0.9m

Answers

Answer:

2m.

Explanation:

molality = no.of moles of solute ÷ mass of solvent in kg

molalty = 1.5 moles ÷ 0.75 g

            = 2m

HEELLLP
How many liters of hydrogen gas, at STP, are required to produce 2.50 x 1022 molecules of CH4? C + 2H2 → CH4

Answers

Answer:

1.8 L

Explanation:

According to Avogadro;

1 mole of CH4 contains 6.02 * 10^23 molecules of CH4

x moles of CH4 contains 2.50 x 10^22 molecules of CH4

x = 1 * 2.50 x 10^22 molecules/ 6.02 * 10^23 molecules

x = 0.04 moles of CH4

2 moles of H2 yields 1 mole of CH4 gas

x moles of H2 gas yields  0.04 moles of CH4

x = 2 moles * 0.04 moles / 1mole = 0.08 moles of H2

x = 0.08 moles of H2

Since 1 mole of H2 occupies 22.4 L

0.08 moles of H2 occupies 0.08 moles * 22.4 L/ 1 mole

= 1.8 L

A chemist observed bubbling and fizzing after adding an acid solution to a
white powdery substance in a beaker. Which of the following can be
inferred?

Answers

Answer:

a chemical reaction occured

Explanation:

bubbling and fizzing after adding a substance, most offten means a chemical reaction is happening

~I will give the brainliest~
How does temperature affect the rate constant for a reaction?
A. increasing temperature exponentially increases the rate constant
B. increasing temperature linearly increases the rate constant
C. increasing temperature exponentially decreases the rate constant
D. increasing temperature linearly decreases the rate constant
E. temperature has no effect on the rate constant

Answers

It’s A and D have a good day!!

Which of the following is the correct Lewis dot structure for F2?

Answers

Answer:b

Explanation:

Correct dot

If 1.25 g of water is heated from 20.0 degrees Celsius to 45.0 degrees Celsius and has a specific
heat of 4.18 J/gC, how much heat energy does it contain?

Answers

Answer: Heat energy contained by water is 130.625 J.

Explanation:

Given: Mass = 1.25 g

Specific heat = [tex]4.18 J/g^{o}C[/tex]

Initial temperature = [tex]20.0^{o}C[/tex]

Final temperature = [tex]45.0^{o}C[/tex]

Formula used to calculate heat energy is as follows.

[tex]q = m \times C \times (T_{2} - T_{1})[/tex]

where,

q = heat energy

m = mass of substance

[tex]T_{1}[/tex] = initial temperature

[tex]T_{2}[/tex] = final temperature

Substitute the values into above formula as follows.

[tex]q = m \times C \times (T_{2} - T_{1})\\= 1.25 g \times 4.18 J/g^{o}C \times (45.0 - 20.0)^{o}C\\= 130.625 J[/tex]

Thus, we can conclude that heat energy contained by water is 130.625 J.

Que unidad utilizamos para medir un átomo de oxígeno??

Answers

Answer:

Im pretty sure you use mass

Explanation:

Answer:

Los químicos eligen definir la AMU como 1/16 de la masa promedio de un átomo de oxígeno que se encuentra en la naturaleza; es decir, el promedio de las masas de los isótopos conocidos, ponderado por su abundancia natural. Los físicos, por otro lado, lo definieron como 1/16 de la masa de un átomo del isótopo oxígeno-16 (16O).

eeeeeeeeeeeeeeeeeeeeeeeeeeeee

Answers

1. Closest

2. Million

3. All

4. Sunlight

5. Heat

6. Are

7. Faster

8. Million billion

9. Protection

10. Moon

11. Never

12. Tiny

13. Living

14. Explosions

15. Solar

Have a nice day!

Answer:

1. Closest

2. Million

3. All

4. Sunlight

5. Heat

6. Are

7. Faster

8. Million billion

9. Protection

10. Moon

11. Never

12. Tiny

13. Living

14. Explosions

15. Solar

give the other person brainliest

have a good day :)

Explanation:

0.225L solution of H2CO3 is neutralized by 0.0880L of a 1.22 M Fe(OH)3 solution. What
is the concentration of the H2CO3 solution?

Answers

Answer:

0.716

Explanation:

First, write the balanced equation:

3 H2CO3 + 2 Fe(OH)3 ----> Fe2(CO3)3 + 6 H2O

Second, go from the molarity of H2CO3 to liters of Fe(OH)3

(Pull mole ratio from balanced equation)

1.22/1L  x  0.0880/1  x  3molH2CO3/2molFe(OH)3 x 1/0.225L

Use calculator, and you end up with 0.7157333

Round to 0.716

how many grams is needed to make the following solution?

Answers

Answer:

c

Explanation:

yxyyyxyxxyxxy yy y gg ff ff d d f t r rr rr rr rr r r t tt t

pls help me ASAP
its very urgent ​

Answers

Answer:

C Region

Explanation:

C Region contains all the liquids as 0 °C is the freezing point of water (Crystals of water are formed leaving it no more in the liquid state) and 100 °C is the boiling point (The water boils leaving it no more in the liquid state).

Hence, All liquids are contained in the C region.

[tex]\rule[225]{225}{2}[/tex]

Hope this helped!

~AH1807

What is the volume occupied by 0.17 grams of gaseous H2S at 27◦C and 380 torr?

Answers

Answer:

0.25 liter

Explanation:

Trust

Perform an on-line search to find real-world uses for the titration process. State what you find below.

Answers

Answer:

The titration process has quite a few real-world uses, including key roles in the food industry and medical community. The titration process is essentially an analytical technique, as it is used to determine a chemical or physical property of a chemical substance, element, or mixture (such as food). Specifically in the food industry, it is used to allow food manufactuers to determine the quantity of a reactant in a sample. To provide an example, it can be used to find the specific amount of stuff that is usually labeled on the nutrition label, such as sugar, salt, protein, calcium, vitamin C, etc. As for the medical world, pharamcists typically use this process to get the proper mix when compounding medicines. It is used to get the necessary proportions in intravenous drips.

Past due! Help please I choose the middle picture for my hypothesis being inclusive can you help explain why and how it shows it’s being inclusive?

Answers

Answer:

Explanation:

its supposed to be not supported not inclusive because you said mix

2) What is an atom? Name and give the charges of the three particles inside the atom.

Answers

Atoms consist of three basic particles: protons, electrons, and neutrons. The nucleus (center) of the atom contains the protons (positively charged) and the neutrons (no charge). The outermost regions of the atom are called electron shells and contain the electrons (negatively charged).

A decrease in the height of the mercury column usually means the coming of a.

Answers

Answer:

Low-pressure system and clear weather.

Explanation:

A car moved 60 m East and 90 m West. What is the distance? *

Answers

the answer would be 150 m because you just add 60 and 90

Select the correct answer.
In an isolated system, two copper bars at different temperatures transfer energy until both are at the same temperature. How would the
transfer of energy be different if the bars were in an open system?


O A. Energy transfer would occur only between the copper bars.
OB. Energy transfer would occur between the copper bars and the surroundings.
Ос. No energy transfer would occur between the copper bars or the surroundings.
OD. Energy transfer would occur only with the surroundings.
Reset
app.edmentum.com/assessments delivery/ua/la/launch/49382676/45422878/aHROCHM6Ly9MMISHCHAUZWRIZWOWOuY29tL2XIYXJuZXItdWkvdXNlci1hc3NpZ250ZW5OLZOSMzgyNjc212xhaW5/aHaHZCSONTOM
San ou

Answers

Answer:

OB. Energy transfer would occur between the copper bars and the surroundings.

Explanation:

We define an isolated system as a system in which there is neither exchange of material nor energy while an open system is one in which materials and energy can be exchanged with the environment.

Given an open system consisting of two copper bars at different temperatures, energy will not only be exchanged between the copper bars but also between the copper bars and the environment.

PLZ Help asap!!!!

Sulfuric acid is purchased full-strength at 18.0M. How many milliliters of full-strength acid are needed to prepare 500.0 mL of aqueous 0.35M H2SO4? Round your answer to 3 significant figures.
A. 13.4 mL
B. 82.6 mL
C. 9.70 mL
D. 79.0 mL

Answers

Answer:

C. 9.70

Explanation:

Hello,

This problem is a simple dilution problem which utilizes the formula M1V1= M2V2 (where M is molarity, V is volume). I have attached a helpful image as well.

M1 V1 = M2 V2

(18) (x) = (0.35) (500)

x = 9.72mL which is close enough to option C.

Select the correct answer. Two charged objects, A and B, exert an electric force on each other. What happens if the distance between them is increased? A. The charge on B decreases. B. The charge on B increases. C. The electric force between them decreases. D. The electric force between them increases.

Answers

Answer:

The electric force between them decreases

Explanation:

The force between two charged particle is given by :

[tex]F=\dfrac{kq_1q_2}{r^2}[/tex]

Where

r is the distance between charges

If the distance between the charges is increased, the electric force gets decreased as there is an inverse relation between force and distance.

Hence, the correct option is (c) "The electric force between them decreases"

If you say an object is hot, you are feeling the transfer of
a. chemical energy
b. thermal energy
c. potential energy
d. kinetic energy

Answers

Answer:

The answer to your question is B

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Study the numerical expression (4 x 10) + 8. Which one of the following expressions is equivalent to this numerical expression?A.Divide 8 by 10, then multiply the quotient by 4.B.Divide the product of 4 and 10 by 8.C.Multiply 4 by the quotient of 10 and 8.D.Divide 8 by the product of 4 and 10. 1. Which of the following was not a cause of the American CivilWar. *A. Slavery in America B. Manufacturing of goods in America C. States rights How could the government stop world hunger? Solve the following system of equations graphically on the set of axes below. Y=-1/2x +1 and y=x-5 2. Use the image to answer the questions. (a) What is the center and the radius of the circle? (b) What are the equations of the circle in graphing form and in general form? Show your work. For a typical human aorta, the diameter of the lumen is 30 mm and the thickness of the wall is 4 mm. Assuming a blood density of 1.06 gm/cc and a viscosity of 0.035 Poise, calculate the Womersley number if the heart rate is 70 bpm. Diameters for the carotid and femoral arteries of a typical human are about 0.8 cm and 0.5 cm, respectively. Compute the Womersley numbers for each of the arterial segments for the same heart rate and explain if the flows can be assumed steady or not. HELP ASAP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! Jovi distributed 3(n+2) and got 3 x n + 3 x 6 is his answer correct I Really need help:/ Pls i need help please no links just help me and if you don't know than don't answer right answers only What are three ways a driver can cause a car to accelerate?A. Turn the key in the ignition while the car is stopped.B. Turn the steering wheel while the car is moving.C. Press the gas pedal while the car is stopped.D. Press the brake pedal while the car is moving. what is the mass of 0.200 mol of calcium Select the correct answer.Becky has a keen interest in understanding the origins of the ancient primal religions that worship many gods. Which theism is she studying?OA. monotheismOB. polytheismOC. pantheismOD.monismOEatheism A patient is to take 4 g of amoxicillin prior to dental work. If the pharmacy carries 200 mg capsules, how many will the patient take? Bobby scores m marks in a test A. Dan scores two marks less than Bobby. write down an expression for Dan's marks in terms of m QuPeter hired a cleaning company to clean his house. The cleaning company charges afixed fee of $15 plus $17 per hour to clean a house.a. Write an equation that can be used to determine, c, the total amount in dollars thatthe cleaning company charges to clean a house in h hours. PLEASE HELP Choose One: Written response: (Informational/Explanatory): Explain how Winston Churchill appealed to Britishnationalism in his speech addressing England's resolve against Germany in World War II. Use specificreferences from the text to support your response. (R1.10, W.1a, 4,8; RH.10, WHST.8, 9) Written response: (Informational/Explanatory): Identify and explain the importance of Orwell's Remedy ofSix Rules" to improve writing and clarify meaning. Use textual evidence to support your response. I left my last job because I felt that they didn't recognize my _______.A) accommodationsB)accomplishmentsC)acclamation 12/4 = 12 1/4 True or False A sign on the road says " Speed limit, 60 miles per hour. Let s be the speed of car.Write an inequality that matches the information on the sign