Chemistry High School

Help on 2 and 3 due tomorrow pls help

Help On 2 And 3 Due Tomorrow Pls Help

Answers

Answer 1

Answer:

2

b= they are grouped differently, but all the atoms are still there.

Related Questions

What volume is occupied by 2.33 miles of an ideal gas at 0.953 atm and 44°C

Answers

Answer:

6663.6

Explanation:

All changes in phase (solid-liquid-gas) are

Answers

Answer:

States of matter

Explanation:

Three states of matter

If the football indoors had a volume of 5.33 L at 21degrees celsuis, what is the volume of the football outside where the temp is 10C (temp must be in K) MUST SHOW WORK

Answers

Answer:

5.13 L

Explanation:

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

Initial volume (V₁) = 5.33 L

Initial temperature (T₁) = 21 °C

Final temperature (T₂) = 10 °C

Final volume (V₂) =?

Next, we shall convert celsius temperature to Kelvin temperature. This can be obtained as follow:

T(K) = T(°C) + 273

Initial temperature (T₁) = 21 °C

Initial temperature (T₁) = 21 °C + 273

Initial temperature (T₁) = 294 K

Final temperature (T₂) = 10 °C

Final temperature (T₂) = 10 °C + 273

Final temperature (T₂) = 283 K

Finally, we shall determine the final volume. This can be obtained as follow:

Initial volume (V₁) = 5.33 L

Initial temperature (T₁) = 294 K

Final temperature (T₂) = 283 K

Final volume (V₂) =?

V₁/T₁ = V₂/T₂

5.33 / 294 = V₂ / 283

Cross multiply

294 × V₂ = 5.33 × 283

294 × V₂ = 1508.39

Divide both side by 294

V₂ = 1508.39 / 294

V₂ = 5.13 L

Thus, the new volume of the football is 5.13 L

describe each of the three states of matter (solid, liquid, gas)​

Answers

Explanation:

In a solid particles are firmly together and are stuck in a regular pattern

in a liquid particles still touch but arent in a fixed pattern

in a gas particles move quickly in all directions

Which of the following represents the molecules of one compound and
atoms of one element?

Answers

Answer:

i think its b.c but I'm not sure

Answer:

A

Explanation:

A is element as all of them look the same

b is mixture of atoms

C is mixture of atoms and compounds

D is just atoms

E is mixture of element and compound

Indicate which aqueous solution has the highest boiling point elevation. (Kb for water = 0.512 °C/m)

Answers

Answer:

carbon tetrachloride

Explanation:

Boiling point elevation of a liquid or a compound is defined as the boiling point of a liquid that is that will be higher when some other other compound is added. It means that the solution has a higher boiling point than the solvent. When a non volatile solute is added to the pure solvent like water, it results in the highest boiling point elevation.

Carbon tetrachloride, Kb = 5.03°C/m shows highest boiling point elevation when it is used to make a 0.10 m non - electrolyte solution.  

How is a calorimeter used in this experiment different from the ones used to find the energy content of a snack

Answers

Answer:

Kindly check the explanation section.

Explanation:

PS: Note that enough information are not being provided and we do not know the experiment this question is all about. However, some information are provided below which is going to aid in solving when you get access to the main question.

The determination of the heat transferred from one substance to another is one of the important aspect in science. The method in which this heat is being measured is known as calorimetry and the instrument used in this technique is known as the calorimeter.

When the energy content of a snack is needed to be calculated, there is the need use a type of instrument known as bomb calorimeter.

Most of the calorimeters used by students are not so expensive like the used in the industries. Most of these calorimeters operates at a constant pressure while the Bomb Calorimeter operates at constant volume.

If 0.0015 moles of NaOH is dissolved in 11 L of water, what is the pH of the
solution?

Answers

Answer:

pH = 10.15

Explanation:

NaOH is a strong base so it dissolves completely.

Calculate your [OH-] first by dividing the moles of OH- by the volume.

0.0015 mol OH- / 11 L = 0.00014

Then, calculate the pOH:

pOH = -log[OH-] = -log(0.00014) = 3.85

pOH + pH = 14, so pH = 14 - pOH = 14 - 3.85 = 10.15

It is more logical to believe that the complex life sustaining processes of the sun-Earth system were created because they Choose... on one another.

A. rely
B. orbit
C. breathe
D. spin

Answers

They (A. Rely) on eachother.

If 95 grams of Iron are needed to react with sulfur, how many grams of sulfur are involved in this reaction?
2 Fe + 3 S=Fe2S3

Answers

Answer:

82 g S

Explanation:

Mole measure the number of elementary entities of a given substance that are present in a given sample. Therefore, 81.6 grams of sulfur are involved in this reaction.

What is mole?

The SI unit of amount of substance in chemistry is mole. The mole is used to measure the quantity or amount of substance. We know one mole of any element contains 6.022×10²³ atoms which is also called Avogadro number.

2 Fe + 3 S[tex]\rightarrow[/tex]Fe[tex]_2[/tex]S[tex]_3[/tex]

mass of iron = 95 grams

Molar mass of iron=55.8450 g/mol

number of moles of iron =Given mass÷ Molar mass of iron

number of moles of iron=95÷ 55.8

number of moles of iron=1.70 moles

The mole ratio between iron and sulfur is 2:3

moles of sulfur = (3/2) moles of iron

moles of sulfur = (3/2)×1.70

moles of sulfur=2.55 moles

Mass of sulfur= number of moles of sulfur× Molar mass of sulfur

                       =2.55× 32

                       =81.6g

Therefore, 81.6 grams of sulfur are involved in this reaction.

To know more about mole, here:

https://brainly.com/question/15209553

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Sodium bicarbonate (NaHCO3), also known as baking soda, is used to relieve heartburn, sour stomach, or acid indigestion by neutralizing excess stomach acid. When used for this purpose, it is said to belong to the group of medicines called antacids.



How many atoms are found in two molecules of sodium bicarbonate?

Answers

Answer:

NaHCO3 = No. of atoms in one molecule is 1 sodium + 1 Hydrogen + 1 carbon + 3 oxygens = 6 atoms per molecule.

We double it for two molecules, so 12 Molecules!

Explanation:

Hope i helped, Brainliest would be appreciated!

Have a nice day!

  -Aadi x

2.00g of Copper wire was added to 50.0 mL of a 0.050M solution of Silver Nitrate. The reaction
produced solid silver and aqueous copper II Nitrate. The silver precipitate was collected and
dried. It was determined that the mass of the silver precipitate was 0.24 g. Use this information
to determine the theoretical yield, limiting reactant, and percent yield.

Answers

Answer:

See explanation

Explanation:

Now, the equation of the reaction is;

Cu(s) + 2AgNO3(aq) --------> Cu(NO3)3 (aq) + 2Ag(s)

Number of moles of silver precipitate = 0.24/108 g/mol= 0.0022 moles

Number of moles of AgNO3 = 50/1000 * 0.050 = 0.0025 Moles

If 2 moles of AgNO3 yields 2 moles of Ag

Then  0.0025 moles of AgNO3 yields  0.0025 * 2/2 = 0.0025 moles of Ag

Number of moles of Cu = 2.00g/63.5 g/mol = 0.03 moles

If 1 mole of Cu yields 2 moles of Ag

0.03 moles of Cu yields  0.03 moles * 2/1 = 0.06 moles of Ag

Hence AgNO3 is the limiting reactant

Theoretical yield of Ag = 0.0025 moles of Ag * 108 = 0.27 g

Actual yield of Ag = 0.24 g

Percent yield = actual yield/theoretical yield * 100

Percent yield = 0.24/0.27 * 100

Percent yield = 88.8%

A student asks why the ashes from a fire have much lower mass than the wood that was burned. Which of the following is the correct answer to the student's question?

Answers

Answer:

It have lower mass because much of the ashes came from the burned wood. (ashes were like little parts of the wood). plus most of the fuel was turned in to fire (light and heat energy) so yeah ash is just the left over.

Explanation:

This is agree or disagree I need help ASAP!!

Answers

Answer:

disagree

sometimes they attract

Explanation:

Answer:

Explanation:

2. Agree

3. Agree

4. Agree

5. agree

6. disagree

If im wrong its because im tired lol

HELP ME ASAP PLZZ 21 POINTS

Answers

Answer:

A, D, F

Explanation:

Cold currents usually go along with Earth's rotation while the warm waters are subjected to the coriolis effect and go in a direction against Earth's rotation.

Biomes are characterized by temperature, precipitation, and the plant and animal communities that live there.
True or false?

Answers

Biomes are typically characterized based on the dominant plant and animal species found in a certain geographic area. Temperature and precipitation are what determine the geographic distribution of a biome which species can live there.

False

i need help i have a homework assignment to finish and this is the last question help please and thank u

Answers

A
i just searched it up and wanted to help

show the path to the formation of sodium calcium and aluminum bases please help me​

Answers

Answer:

i hope this helps :)

Explanation:

please mark brainlest

Answer:

dunno

Step-by-step explanations:

You and a friend are swimming at your grandparent's house one toasty

summer afternoon. You have music playing through the Bluetooth speaker

on the pool deck, but every time you go underwater, you can hear the

noise, but you cannot understand the words of the song. What would

explain this phenomenon? *

Sound waves travel faster in a gas than they do in a liquid, which is why you cannot

understand the words,

Sound waves travel faster in a liquid than a gas, our ears are just not designed to

translate the faster moving waves,

Sound waves cannot travel at all in a liquid, which is why you cannot understand the

words and it's a miracle you can even hear the music at all,

Sound waves travel at the same speed regardless of the medium; your grandfather is

turning the music on and off when you go underwater and the noise you hear is the

song stuck in your head,

Answers

Answer:

Sound waves travel faster in a liquid than a gas, our ears are just not designed to  translate the faster moving waves.

Explanation:

Sound waves are mechanical waves which travel through vibrating the medium (the "stuff") they're traveling through. This means they actually move faster through materials that are more dense, and will move more quickly through liquid than gas, and a solid than a liquid. However, our ears are adapted to "translating" sound waves in air rather than water, so we don't understand the music well when the waves move through the water.

A similar idea explains why our vision is blurry underwater; light waves travel at a different speed (slower, not faster!) in water and our eyes perceive this change in speed as blurriness.

People should be more concerned about the global water budget than the local water budget.
True
Or false

Answers

true because you shouldn’t be selfish and share with the world

Use the Word Correctly in a Sentence

Ion

Answers

I am studying about Ions in my science class.

Ohio Achievement Test Coach Science, Grade 5
10. Bob first blows whistle hard. Then he blows the same whistle gently. What
changed when Bob blew the whistle the second time?
POSTTEST
A pitch
B. volume
C. pitch and volume
D. frequency

Answers

I think it’s the frequency? Because it lower his voice when he whistle again

Which 0.1 M solution has a pH greater than 7?
w
1. C6H1206
2.CH3COOH
3.КСІ
4.KOH

Answers

Answer:

4) KOH

Explanation:

Trust

0.1 M KOH has a pH greater than 7.

What is pH?

The pH of a solution is a measure of hydrogen ion (H+) concentration, which is, a measure of acidity.

What is POH?

The  pOH of a solution is measure of hydroxide ions (OH).which is a measure of basicity.

The pH of

CH3COOH is 2.88..КСІ is 7KOH is 12

∴According to the question the pH greater than 7 is KOH

Learn more about pH here: https://brainly.com/question/172153

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The following statements were stated by a politician who was paid by the nuclear energy lobby in a debate in favor of nuclear energy:



a. Nuclear energy doesn’t produce a byproduct because the atoms disappear.

b. Nuclear energy produces no polluting gas in its reaction.

c. Nuclear energy does not contribute to global warming.

d. Nuclear energy has low mining and transportation effects on environment.



Which statement is false and should not be used to argue in favor of nuclear energy?



A) Statement A

B) Statement C

C) Statement D

D) Statement B

Answers

Answer:

d

Explanation:

the best state ment is d lol

what is the molar mass of.
3 moles of iodine, 5 moles of gold, and 2.5 moles of potassium

Answers

Answer:

choices?

Explanation:

how much atomic mass does Osmium have

Answers

Answer:

190.23g

Explanation:

Osmium is element number 76 on the periodic table, with the atomic symbol "Os." The atomic mass of any element is listed underneath the atomic symbol. Osmium has an atomic mass of 190.23 grams.

please help there is a pic and marking brain list

Answers

Answer:

3

Explanation:

It’s all of the above

Carbon dioxide and oxygen are both ___ found in the air.

Answers

Answer:

gases

Explanation:

Answer:

the Carbondioxed and oxygen are both a gass found in the air

A rock collection comes from which part of Earth?

A. atmosphere
B. biosphere
C. geosphere
D. hydrosphere

Answers

Answer:

c

Explanation:

I looked the answer up it said it was geosphere

Answer:

the answer is geosphere

Explanation:

i hope it helps you

Convert the following problems:

a 96 kg to g

b 15 cL to kL

c 188 dL to L

d 3600 m to km

e 234 K to °C

f 43 °C to °F

i would really appreciate the help on this, I'm kinda struggling

Answers

Answer:

a.) 96000 g

b.) 0.00015 kL

c.) 18.8 L

d.) 36 KM

e.) -39.15 C

f.) 109.4 F

Explanation:

To turn kg to g, multiply the value by 1000

To Turn CL to KL, divide the volume value by 10000

To turn dl to l, divide volume by 10

to turn m to km, multiply meter value by 0.001 or divide by 1000

To convert c to f, multiply the temperature in degrees Celsius by 2, and then add 30

i hope this helps : )

Other Questions
Read the poem.The Whippoorwillby Madison Julius CaweinI. Above lone woodland ways that led To dells the stealthy twilights tread The west was hot geranium red; And still, and still, Along old lanes the locusts sow With clustered pearls the Maytimes know, Deep in the crimson afterglow, We heard the homeward cattle low, And then the far-off, far-off woe Of "whippoorwill!" of "whippoorwill!"II. Beneath the idle beechen boughs We heard the far bells of the cows Come slowly jangling towards the house; And still, and still, Beyond the light that would not die Out of the scarlet-haunted sky; Beyond the evening-star's white eye Of glittering chalcedony, Drained out of dusk the plaintive cry Of "whippoorwill," of "whippoorwill."III. And in the city oft, when swims The pale moon o'er the smoke that dims Its disc, I dream of wildwood limbs; And still, and still, I seem to hear, where shadows grope Mid ferns and flowers that dewdrops rope, Lost in faint deeps of heliotrope Above the clover-sweetened slope, Retreat, despairing, past all hope, The whippoorwill, the whippoorwill.Whippoorwill - a nocturnal bird with a distinctive call that is suggestive of its nameQuestion 1Part AWhat is a theme of The Whippoorwill?In order to move forward, people must leave the past behind.People sometimes long for what they cannot have.There is a balance between nature and the city.Nature soothes the heart and calms the mind.Question 2Part BHow does the theme in Part A develop in the poem?The city sky is filled with cloudy, gray smoke and it makes the speaker feel sad that the moon is hidden.The speaker thinks he hears the sound of the whippoorwill while walking in the city.The speaker recalls his fondest memories of nature while living in the city.The woeful sound of the whippoorwill echos the despair the speaker feels living in the city. 2. In a certain Village in eastern Uganda, residents use on average 1.5 Kg per inhabitant of wood per day in a traditional stove of 12% efficiency. If the village has 200 in habitants, Find,i.Thetotal mass of wood consumed daily.ii.The Energy demand of the village in KWh.iii.The actual energy consumption of the village in KWh.iv.If an investor would like to provide this village with a new energy converter of 30% efficiency, how many Kilograms of wood will be required per day DO NOT SEND ME PDFS!!!Which of these was not a territory conquered by Rome during the time period of the Punic Wars?AcragasItalySyriaMacedonia In the month of June, a department had 20,000 units in beginning work in process that were 70% complete. During June, 90,000 units were transferred into production from another department. At the end of June there were 10,000 units in ending work in process that were 40% complete. Materials are added at the beginning of the process, while conversion costs are incurred uniformly throughout the process. The equivalent units of production for conversion costs for June were This is Adeles solution for the equation x^2+8x- 9 = 0 Step 1 x^2 +8x = 9 Step 2 x^2 +8x + 16 = 9 + 16 Step 3 ( x + 4 ) ^2 = 25 Step 4 x + 4 = 25 or x + 4 = - 25 Step 5 x = 21 or x = - 29. Where did Adele make her mistake? What are the solutions to this equation? Show all of your work. 2. Which would be the best method to use to solve the following equation. Explain your reasoning. A x^2 - 49 = 0 B. x^2 - 3x - 4 = 0 C. x^2 - 2x - 6 = 0 Type the expression that results from the following series of steps:Start withy, add 7, multiply by 3, then subtract 6. Sr. Rolando: Hola, seor Augusto, usted es de Mxico?Sr. Augusto: S, soy de Mxico.Sr. Rolando: ________Sr. Augusto: S, me encanta. The graphs of linear functions f and g are shown on the grid below.Which function is best represented by the graph of g? the scientists at nasa have arranged everything to launch Apollo (launching) Expand (2x - 5)4 with the help of Pascal's triangle Rewrite the equation of the line 5y = -1/4x - 6 in standard form I NEED THIS ASAP!!!! PLEASE!!___1. Organisms that make their own food A. Chloroplasts___ 2. Site of photosynthesis B. Aerobic___ 3. Organism that must consume other organisms C. Glucose to obtain energy. D. Mitochondria___ 4. C6H12O6 E. Glycolysis___ 5. Process requires oxygen F. Cytoplasm___ 6. Adenosine diphosphate G. ADP___ 7. During aerobic respiration, the most ATP H. Autotrophs is produced during this process. I. ATP___ 8. The anaerobic process of splitting glucose J. Anaerobicand forming two molecules of pyruvic acid K. Electron Transport Chain___ 9. Place where glycolysis occurs L. Heterotroph___10. Place where the Krebs cycle occurs M. Mitochondria___11. 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