Chemistry High School

Can anyone pls answerrrrt

Can Anyone Pls Answerrrrt

Answers

Answer 1

Answer:

wdym

Explanation:

hmm

Related Questions

A 0.03 mol sample of NH4NO3 (s) is placed in a 1 L evacuated flask, which is then sealed and heated. The NH4NO3 (s) decomposes completely according to the balanced equation above. The total pressure in the flask measured at 400 K is closest to which of the following? (The value of the gas constant, R, is 0.082 L atm mol-1 K-1.)
a. 3 atm
b. 1 atm
c. 0.5 atm
d. 0.1 atm
e. 0.03 atm

Answers

The total pressure in the flask measured at 400 K is 1 atm

The correct answer to the question is Option B. 1 atm

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

Number of mole (n) = 0.03 mole Volume (V) = 1 L Temperature (T) = 400 KGas constant (R) = 0.082 atm.L/Kmol Pressure (P) =?

Using the ideal gas equation, we can obtain the pressure in the flask as follow:

PV = nRT

P × 1 = 0.03 × 0.082 × 400

P = 1 atm

Therefore, the total pressure in the flask measured at 400 K is 1 atm

Learn more on ideal gas equation: https://brainly.com/question/4147359

Answer: a: 3 atm

Explanation:

0.03 mol NH4NO3 decomposes into 0.09 mol of gas total, thus we multiply 0.09 by 0.082 and 400K to get our answer of about 3 atm.

Which of the following are needed for an electrical circuit? Choose all that apply

A.A mental conductor for electrons to pass through
B.light bulb
C.two negative ends to a battery
D.closed loop
E.charged battery to provide an electrical difference

Answers

Answer:

E\charged battery to provide electronic difference

The answers are A, B, D and maybe E. I think these are the answer but I’m not really sure.

Conversion of units of temperature

Answers

Answer:

1. -5

2. 88.7

3. -23.3333

4. 126.5

5. 69.8

6. 30.61111

7. 118.4

8. 275

9. 94.82

10. 44.6

Explanation:

Answer:

here you go

Explanation:

1.-5

2.88.7

3.23.333

4.126.5

5.69.8

6.30.6111

7.118.4

8.275

9.94.82

10.44.6

does Waves move in a circular motion.
True or false​

Answers

why yes

Waves are created by energy passing through water, causing it to move in a circular motion

What did you observe about the properties of the sodium carbonate mixture before the substances were mixed together?

Answers

Answer:

Would you consider adding a sodium carbonate solution to a magnesium sulfate .

Explanation:

??

How to get rid of high cholesterol?!




Please tell me

Answers

you have to drink a lot of water and 67890

which colour would you expect ekasilicon to be

Answers

Answer:

it would ether be gray to black or silver to gray and black

Explanation:

because of my calculation ekasillicon would be that color because of the eyes and because of your color seeing .

the tree is 18 meters long is an example of

Answers

This question is describing a thoroughly opened statement about the length of a three as 18 meters, which in the context of science can be referred to:

- A hypothesis or a result in the scientific method, if one is measuring the length of given objects.

- A measurement, if one is measuring the length of a three or any other object.

In both cases, we can note that the measurement has the following basic structure:

1. A number, defining how large or small the measurement is.

2. A unit, defining the system in which the measurement is reported to the scientific community.

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https://brainly.com/question/13501946https://brainly.com/question/733946

Page. 5. What is the position of alkali metals in the Modern periodec table. ​

Answers

Question:-

What is the position of alkali metals in the Modern periodic table.

Answer:-

They are placed in the IA group, which is the first column on the left side of the periodic table.

Explanation:-

Alkali metals are placed on the first column (IA)

(lithium, sodium, potassium, rubidium, cesium, francium)

Choose all the answers that apply.

What’s is the freezing point of water?

1. 0’c

2.32’c

3.32’F

4.0’F

Answers

Answer: The answers are the first and third options.

Answer:

1.0'c

3.32'f

Explanation:

Alison observes that when she injects additional gas molecules into a container of gas, the number of collisions in the container (and the pressure inside) increases. She then increases the volume of the container just enough to restore it to its original pressure. Which of the following laws best describes what Alison observed?
A. Amonton's Law
B. Avogadro's Law
C. Boyles Law
D. Charles's Law
E. Dalton's Law

Answers

Answer:

Explanait it is not d

what is meant by the term symbol of an element?​

Answers

An element symbol is a one- or two-letter abbreviation for a chemical element name. When a symbol consists of two letters, the first letter is always capitalized, while the second letter is lowercase. Element symbols also can refer to alchemy symbols for the elements or to the symbols used to describe isotopes.

Study hard!

what is the chemistry between us?

Answers

No chemistry between us.

BRAINLIEST TO BEST ANSWER AND 40 POINTS GRAB QUICK

Why are sodium (Na) and potassium (K) in the same group on the periodic table?

Answers

Answer:

They both have 1 valence electron

Explanation:

Which statement about states of matter is correct? (1 point)
O If you add enough heat to a gas, it will change into a liquid
If you cool a solid enough, it will change into a liquid
If you add enough heat to a solid it will change into a liquid.
o If you cool a liquid enough, it will change into a gas

Answers

Answer:

C

Explanation:

If you add enough heat to a solid it eventually becomes a liquid

Which of the following statements describes sound energy?
Sound energy does not travel at all.
Sound energy needs a medium to travel through.
Sound energy can travel in empty space.
Sound energy can only travel through air.

Answers

Answer:

C.

Explanation:

determine the bond type (NP, Polar, Ionic)

Answers

Answer:

a. NP

b. NP

c. Polar

d. Ionic

e. Polar

Explanation:

The way I did it was using the electronegativity of the elements mentioned and subtracted the pairs. For non polar the difference is 0-0.4, for polar it’s 0.4-2.0, for ionic it’s >2.0. I included the chart I used to find the electonegativity for the elements below.

B: 2.04, P: 2.19, difference is 0.15, so NP

Be: 1.57, Si: 1.9, difference is 0.33, so NP

C: 2.55, Na: 0.93, difference is 1.62, so Polar

Li: 0.98, O: 3.44, difference is 2.46, so Ionic

Mg: 1.31, N: 3.04, difference is 1.73, so Polar

If you really want I can explain why electronegativity affects the types of bonds, just comment below

Answer:

Polar is the correct answer

Explanation:

#CarryOnLearning

(cwater=4.18 J/g°C)
A
1,254 J

B
1,672 J

C
2,926 J

D
4,598 J

Answers

Answer:

WHAAAAAAAAAAAAAAAAAAAAT  

Explanation:

When drawing an atom, we draw the same number of electrons as
protons


Select one:

True

False


Answers

Answer:

true

I hope it helps.

[EARTH SCIENCE]

Hi, can anyone help please? Thank uuuu!!! :D

The relationship between the average distance of a planet from the sun and the planet’s orbital period is described by the....

A. Law of ellipses.
B. Law of equal areas.
C. Law of motion.
D. Law of periods.

Answers

Answer:

c. law of motion

Explanation:

I think I hope it helps

Deval drew the models of particles in a substance shown below. Which model best represents the particles in solid

Answers

Answer:

it would be the second one thank me later

Explanation:


Find the density of an 8 gram rock if the water in a graduated cylinder rises from 25.0 mL to
29.0 mL when the rock is placed in to the graduated cylinder.

Answers

To measure the density of the stone placed in a graduated cylinder let us follow these steps bellow

Measure the volume of water poured into a graduated cylinderPlace the object in the water and remeasure the volume. The difference between the two volume measurements is the volume of the object. Divide the mass by the volume to calculate the density of the object.

We know that the formula for density is given as

Given data

Mass = 8gram

Initial Volume of water in cylinder = 25mL

Final Volume of water in cylinder  = 29mL

Hence the volume of the rock  = 29-25 = 4mL

Therefore the density of the rock = 8/4 = 2 g/mL

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SCIENCE

the different modes of reproduction in animals such as butterflies, mosquitoes, frogs, cats, and dogs (sexual and asexual) a. Cut and paste pictures of animals and their young that are reproduced sexually(cats, dogs, etc.) b. Cut and paste pictures of animals and their young that are reproduced asexually(butterflies, mosquitoes

pls help me! i need help i will brainlies the good answer! answer this now pls! today is the deadline!​

Answers

the different modes of reproduction in animals such as butterflies, mosquitoes, frogs, cats, and dogs (sexual and asexual)???

Ans: Dogs, cats, frogs, butterflies, mosquitoes, and many other animals reproduce by sexual reproduction. Animals have gonads, organs that produce egg or sperm.

a. Cut and paste pictures of animals and their young that are reproduced sexually(cats, dogs, etc.) ???

Ans: your answer is in above

b. Cut and paste pictures of animals and their young that are reproduced asexually(butterflies, mosquitoes) ????

Ans: your Answer is in above

what is the oxidation number of sulfur in the sulfate ion?

Answers

Answer:

+6

Explanation:

Please read question

Answers

Answer:

cant see it

Explanation:

calculate the mass of sodium sample that it contains 2 Na atoms of sodium

please i need help with this ques. ​

Answers

Answer:

45.98 I believe if its wrong im sorry

A little help here please​

Answers

Answer:

Prokaryotic Cells:

- Bacteria

- Unicellular Organisms

- DNA as genetic material

- Ribosomes

- Do not have membrane bound organelles

- Always contain cell wall

Eukaryotic Cells:

- Contains organelles

- Have membrane bound organelles

- Unicellular Organism

- DNA as genetic material

- Ribosomes

- Have loose strand of DNA

- Has nucleus

- Multicellular Organism

- Plant cell

- Animal cell

Explanation:

I have separated them and made the common characteristics in bold. I cannot guarantee that it is correct, these are my educated estimates.

Which statement correctly describes the relationship between molecular structure, the strength of electrostatic forces between
molecules, and the boiling point of a substance? (1 point)
The boiling point of a substance affects the strength of electrostatic forces, which can affect the molecular
structure
The boiling point of a substance affects its molecular structure, which can affect the the strength of
electrostatic forces.
Molecular structure affects the strength of electrostatic forces, which can affect the boiling point of a
substance
Stronger electrostatic forces cause a stronger molecular structure and lower boiling points

Answers

Molecular structure affects the strength of electrostatic forces, which can affect the boiling point of a substance is the statement that correctly describes the relationship between these terms.

The molecular structure is the way in which the atoms that are in a molecule are arranged in space, this is defined by a series of forces that hold the atoms together in a specific arrangement.

The boiling point is the temperature at which the vapor pressure of the liquid equals the pressure that surrounds the liquid, when this happens, the liquid transforms into gas.

For a compound to vaporize, the forces that hold the molecules together must be broken, this means that the boiling point of a compound depends on the attraction between the molecules, that is, on the forces that determine the molecular structure.

If the molecules are held together by strong electrostatic forces, it will take a lot of energy to push the molecules away from each other and the compound will have a very high boiling point.

Therefore, we can conclude that the boiling point depends on the molecular mass of the substance and the type of electrostatic forces present, that is, the bonds that the atoms establish with each other to form the molecule (molecular structure).

Learn more about molecular structure here: https://brainly.com/question/25799404

31.) How far can a rock fly(meters). if the slingshot has a total potential of 500 Joules, and when releasing the slingshot exerts a total amount of 25 Newtons?​

Answers

Faltan 5 pe pa comprar ese vi pa to mar con lo pi en la plazaa

In a chemical change energy can be ___?
A. Created but not destroyed
B. Either created or destroyed
C. Destroyed but not created
D. Neither created nor destroyed

Answers

Answer:

chemical change energy can neither be created nor destroyed.

Explanation:

the rule of law of conversion states that energy can only be converted from said energy to another. it cannot be created and destroyed.

Answer:

D. Neither created nor destroyed

Explanation:

The law of conservation of energy states that energy is neither created nor destroyed.

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