HELP WHOEVER ANSWERS WILL BE MARKED BRAINLIEST!!!

HELP WHOEVER ANSWERS WILL BE MARKED BRAINLIEST!!!

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Answer 1
There you go :)))))))))
HELP WHOEVER ANSWERS WILL BE MARKED BRAINLIEST!!!

Related Questions

Who knows how to do this please help

Answers

Answer: You forgot to zero the balance

Explanation:

Balance Ca + HCI +CaCl2 + H2

Answers

Answer:

Ca + 2 HCl -- CaCl2 + H2

Explanation:

There are two hydrogen on the right side, so we multiply the left side( HCl) by 2 to get 2 hydrogen on the left. This automatically gives you 2 Cl on left side and there are already 2 cl on the right side, so now this equation is balanced.

1) Calculate the percent composition of each element in ammonia (NH).

Answers

Answer:

[tex]\% N=82.2\% \\\\\% H=17.8\%[/tex]

Explanation:

Hello there!

In this case, since ammonia is NH₃, we can see nitrogen weights 14.01 g/mol and hydrogen 3.03 g/mol as there is one only nitrogen atom and three hydrogen atoms; thus, the total mass is 17.04 g/mol. In such a way, the percent composition of each element turns out to be:

[tex]\% N=\frac{14.01}{17.04}*100\%=82.2\% \\\\\% H=\frac{3.03}{17.04}*100\%=17.8\%[/tex]

Best regards!

A gas takes
up a volume of 17 L, has a
pressure of 2.3 atm, and a temperature
of 299 K. If I raise the temperature to
350 K and lower the pressure to 1140
mmHg, what is the new volume?

Answers

Answer:

V₂ = 25.065 L

Explanation:

Given data:

Initial volume = 15L

Initial pressure = 1500 mmHg (1500/760 = 1.97 atm)

Initial temperature = 299 K

Final temperature = 350 K

Final volume = ?

Final pressure = 1050 mmHg (1050/760 = 1.38 atm)

Formula:

P₁V₁/T₁ = P₂V₂/T₂  

P₁ = Initial pressure

V₁ = Initial volume

T₁ = Initial temperature

P₂ = Final pressure

V₂ = Final volume

T₂ = Final temperature

Solution:

V₂ = P₁V₁ T₂/ T₁ P₂  

V₂ = 1.97 atm × 15 L × 350 K / 299 K × 1.38 atm

V₂ = 10342.5 atm .L. K / 412.62 K.atm

V₂ = 25.065 L

what is the mass of 1.25 L of ammonia gas at STP

Answers

Answer:

mass 1.25 Liters NH₃(gas) = 0.949 grams (3 sig-figs)

Explanation:

At STP (Standard Temperature-Pressure conditions => 0°C(=273K) and 1atm pressure,  1 mole any gas will occupy 22.4 Liters.

So, given 1.25 Liters ammonia gas at STP, convert to moles then multiply by formula wt. (17g/mole gives mass of NH₃.

moles NH₃(gas) = 1.25L NH₃(gas)/22.4L NH₄(gas)· NH₃(gas)mole⁻¹ = 0.0558 mole NH₃(gas).  

Converting to grams NH₃(gas) = 0.0558 mole NH₃(gas) x 17 g·mol⁻¹ = 0.949 grams NH₃(gas).

hi, if your looking for extra points (50+) and br ainiest here is ur chance, answer this question correctly plz

Answers

C! the others don’t make sense

Who among, Amit and Saaketh, is correct? Explain.​

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Answer:

What is their question answers exactly? I won't be able to explain who is correct.

Explanation:

Answer:

Not a lot to draw from this question if im going to be honest

Explanation

What is the final volume?

Answers

Answer:

Option A. 9.4 L

Explanation:

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

Initial volume (V₁) = 8 L

Initial temperature (T₁) = 293 K

Final temperature (T₂) = 343 K

Final volume (V₂) =?

V₁ / T₁ = V₂ / T₂

8 / 293 = V₂ / 343

Cross multiply

293 × V₂ = 8 × 343

293 × V₂ = 2744

Divide both side by 293

V₂ = 2744 / 293

V₂ = 9.4 L

Therefore, the final volume of the gas is 9.4 L

What is the atomic mass of element XX if 3.6 moles of the substance has a mass of 192 grams?

Answers

Answer:

53.3g/mol

Explanation

Moles=mass/molar mass

Molar mass= mass/moles

Molar mass= 192/3.6

= 53.3

Which postmortem parameter is fixed by 8 hours?

1)cloudiness of the eyes

2)rigor mortis

3)livor mortis

4)putrefaction

Answers

The postmortem cooling or algor mortis gets fixed by 8- 10 hours after death. The temperature of the body after death can be used to determine the time since death.

PLS HELP THIS IS DUE IN 10 MINS!
Compare and contrast floods and droughts. Give two examples of how they are the same and two examples of how they are different.

Answers

Same: Both are natural disasters. Both are becoming more common to due climate change.

Different: Floods are an excess amount of water whereas droughts are a lack of water for a prolonged period of time. Floods are more common in coastal areas whereas droughts are most common in the Midwest and South.

Does the magnetic field lines of repelling magnets always combine. True or False?

Answers

Its true they are always combine

Answer:

True

Explanation:

yes magnetic feild lines is always combined

Calculate the mass, in grams, of 0.540 mol of manganese (Mn).
Report your answer with three significant figures.

Answers

Answer:

m = 29.6 grams

Explanation:

Given that,

Number of moles = 0.540

The molar mass of manganese = 54.93 g/mol

We know that,

Number of moles = given mass/molar mass

[tex]m=n\times M\\\\m=0.540 \times 54.93\\\\m=29.6\ g[/tex]

So, the required mass of the Manganese is equal to 29.6 grams.

Balance the chemical equation
C2H6+O2 = CO2 +H2O

Answers

c26886
........................

A severe storm would be most likely to damage a coastal area by causing
A.
volcanoes.
B.
pollution.
C.
erosion.
D.
earthquakes.

Answers

D earthquakes


my teacher told me

A severe storm would be most likely to damage a coastal area by causing pollution. Therefore, the correct option is option B.

What is coastal area?

The region where land joins the ocean, or even as a line defining the border between the land as well as the shoreline, is known as the coast, sometimes referred as the coastline and seashore. The terrain of the area's surroundings has an impact on shorelines, as do water-induced erosion processes like wave action.

The length of the shoreline on Earth is about 620,000 kilometers. Natural ecosystems' coasts are significant zones and frequently the site of a diverse range of biodiversity. They are home to significant ecosystems on land, such as freshwater and estuarine wetlands, that are crucial for the survival of bird populations or other land animals. A severe storm would be most likely to damage a coastal area by causing pollution.

Therefore, the correct option is option B.

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Draw the structure formula for
1-ethyl-2,3-dimethylbenzene

Please help me

Answers

Answer:

Please see the attached picture.

Explanation:

1) Draw a benzene ring

2) On the first carbon, add a CH₂CH₃ (known as ethyl) since its location number is 1.

3) 'Dimethyl' refers to 2 methyl (CH₃) branches. The location numbers are 2 and 3, thus add a CH₃ on the 2nd and 3rd carbons.

help plz and will give brainly

Answers

I think D or C is my top answers

The subscript represents the number of ____________ in a chemical equation.

Answers

Answer: Atoms

Good luck!

Compare the change in pH with the addition of acid and base to deionized water and to a buffer.

Answers

Answer:

case1.

The addition of acid and base leads to a change in pH of the water when adding to deionized water due to fact that acid and bases dissociated in dissolving in water. If the H+ ion increases in the water as acid addition hikes it, it will result in decreasing the pH value. The intensity of the acid also affects the dissociation of the ions.

case2

Buffers are normally formed by weak acid and its conjugate base, and adding acid to the buffer it absorbs the H+ ions so the pH will be lower and adding base or increase of OH- conjugate base resists the pH value to increase.

what is derived from sheep and goats that is used in break fluid

A bones and horns
B Fats and Fattys acids
C Manure
D Wool and Lanolin

Answers

the answer is A I took the test

Yes it is a just make sure tho

An empty steel container is filled with 2.0 atm of H₂ and 1.0 atm of F₂. The system is allowed to reach equilibrium according to the reaction below. If Kp = 0.45 for this reaction, what is the equilibrium partial pressure of HF?

Answers

The equilibrium partial pressure of HF is 0.55 atm.

The equation of the reaction is;

        H2(g) + F2(g) ⇄ 2HF

I         2           1             0

C       -x           -x            +x

E     2 - x        1 - x           x

We know that;

pH2 = 2.0 atm

PF2 =  1.0 atm

pHF = ??

Kp = 0.45

So;

Kp = (pHF)^2/pH2. pF2

0.45 = x^2/(2 - x) (1 - x)

0.45 =  x^2/x^2 - 3x + 2

0.45(x^2 - 3x + 2) = x^2

0.45x^2 - 1.35x + 0.9 =  x^2

0.55 x^2 + 1.35x - 0.9 = 0

x = 0.55 atm

Learn more about equilibrium: https://brainly.com/question/3980297

A vitamin C (ascorbic acid) tablet was dissolved in approximately 50 mL of distilled water and titrated with the standardized NaOH solution. From the results of this titration, the mg of ascorbic acid in the tablet was calculated. Molecular formula of ascorbic acid: C6H8O6 Volume of NaOH required to neutralize ascorbic acid in Vitamin C tablet (mL) 20.74 Concentration of NaOH in mol/L, 0.201 Calculate the amount of ascorbic acid in the Vitamin C tablet in (mg).

Answers

Answer:

The correct answer is - 733.69 mg.

Explanation:

given:

The volume of ascorbic acid = 50 ml

The volume of NaOH = 20.74 ml

Molarity of NaOH = 0.201 M

formula = C6H8O6

Solution:

moles of NaOH for titration = molarity of NaOH × The volume of NaOH

= 0.201 × 20.74 × 10^-3

=4.16874 × 10^-3

then molecular weight of ascorbic acid

= 6 × 12+ 8×1+ 6× 16

=176g/mol

the molecular mass would be

= 4.16874 × 10^-3 × 176

= 733.69 × 10^-3 g

=733.69 mg

plz help :(
In a high-pressure system,
a.
air molecules are far apart and pressing on Earth’s surface.
b.
air molecules are far apart and rising away from Earth’s surface.
c.
air molecules are close together and pressing on Earth’s surface.
d.
air molecules are close together and rising away from Earth’s surface.

Answers

Answer:

c.

air molecules are close together and pressing on Earth’s surface.

Explanation:

i hope this helps!

help please guys i need it

Answers

Answer:

Amplitude

Explanation:

Hope I helped :)

Please help ASAP! Please and thank you have a great and blessed day!,

Answers

the answer is “Mineral”
Yea I confirm that the answer I indeed mineral.

How many moles are in 2.5L of 1.75 M Na2CO3

Answers

Answer: There are 4.375 moles in 2.5 L of 1.75 M [tex]Na_2CO_3[/tex]

Explanation:

To calculate the number of moles for given molarity, we use the equation:

[tex]\text{Molarity of the solution}=\frac{\text{Moles of solute}}{\text{Volume of solution (in L)}}[/tex]      

Molarity of solution = 1.75 M

Volume of solution = 2.5 L  

Putting values in equation , we get:

[tex]1.75M=\frac{\text{Moles of} Na_2CO_3}{2.5L}\\\\\text{Moles of }Na_2CO_3=1.75mol/L\times 2.5L=4.375mol[/tex]

oil has a density of 8.5kg/L. what is the volume of 5.4kg oil

Answers

Answer:

0.64 L

Explanation:

Step 1: Given data

Density of oil (ρ): 8.5 kg/LMass of oil (m): 5.4 kgVolume of oil (V): ?

Step 2: Calculate the volume corresponding to 5.4 kg of oil

Density is an intrinsic property and it is equal to the quotient between the mass and the volume.

ρ = m/V

V = m/ρ

V = 5.4 kg/(8.5 kg/L) = 0.64 L


If 280.4 g of KOH react with an excess of FeCl3, how many grams of Fe(OH)3 will be produced?
FeCl3 + 3 KOH — Fe(OH)3 + 3 KCI
How many grams will be produced?

Answers

Answer:

From 00:11

Balance the Molecular Equation

From 01:35

Ions for the Complete Ionic Equation

From 03:04

Net Ionic EquationExplanation:

HELP and give brainlys out to ppl who actually know the answer please help

Answers

Answer:

b. snake and earthworm

Explanation:

embryos are different from each other in early stages- all the others look similar

How many atoms are in 90.43 moles of copper

Answers

409 g P2O5 2) 5.44 x 1025 atoms Cu

Mole measure the number of elementary entities of a given substance that are present in a given sample. Therefore, 8.12×10²³ atoms are in  90.43 mole of copper.

What is mole?

The SI unit of amount of substance in chemistry is mole. The mole is used to measure the quantity of amount of substance. It measure the number of elementary entities of a given substance that are present in a given sample. There are so many formula for calculating mole.

we know one mole of any element contains 6.022×10²³ atoms which is also called Avogadro number

number of atoms/molecules=number of moles × 6.022×10²³(Avogadro number)

number of moles of copper=90.43 moles

Substituting all the given values in the above equation, we get

number of atoms/molecules= 90.43 × 6.022×10²³

number of atoms/molecules=8.12×10²³ molecules

Therefore, 8.12×10²³ atoms are in 90.43 mole of copper.

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SOMEONE PLEASE HELP!!! If someone asked you to explain the differences between capitalism and socialism, how would you answer him/her? What is Wollstonecrafts purpose in writing this letter?Question 1 options:To attack Talleyrand and map out the reasons why his opinion is wrongTo convince Talleyrand to reconsider his views on women and educationTo request that Talleyrand arrange a meeting for her with French politiciansTo shame Talleyrand into retracting his earlier published views about womenQuestion 2 (Mandatory) (2 points) How does paragraph 3 help to support the above purpose?Question 2 options:She is complimenting her audience and stroking his ego.She is listing her own specific desires in a clear manner.She is offending her audience and making him defensive.She is offering irrefutable proof of his flawed logic.Question 3 (Mandatory) (2 points) Where is Wollstonecrafts rhetoric (language) most effective in advancing her purpose?Question 3 options:Page 1 - paragraph 2 - So it is my affection for the whole human race Page 1 - paragraph 4 - Manners and morals are so closely related Page 2 - paragraph 7 - Consider these remarks dispassionately Page 3 - paragraph 15 - The father of a family wont weaken his constitutionQuestion 4 (Mandatory) (2 points) Which of the following statements is a fair summary of page 3?When women are forced into a domestic role in society and are denied their rights, they will ___.Question 4 options:begin to act like tyrants in an effort to gain some controlfall into a depression that impacts their entire householdseek attention and power by immoral methods insteadupset the entire social order and cause widespread chaosQuestion 5 (Mandatory) (2 points) Which quote from the text best supports the answer to the above question?Question 5 options:... man must in some way act like a tyrant and that tyranny ...will always undermine morality.... they try to make things more fair by retaliation... they will seek illicit privileges in ways that make both men and themselves viciousWith fairer laws forming your citizens, marriage can become more sacred;Question 6 (Mandatory) (2 points) We can infer that the author would agree that ______.Question 6 options:logic and reason is not an effective tactic to reach her target audiencemen should never speak on behalf of women againthere is little hope for progressive changes in her lifetimewomen should be included in decisions made about their educationQuestion 7 (Mandatory) (2 points) Which of the following sentences best reflects the authors main claim and purpose for writing?Question 7 options:If woman isnt fitted by education to become mans companion, she will stop the progress of knowledge, because truth must be common to all;If you are going to exclude women, without consulting them, from sharing in the natural rights of mankind, then defend yourself against accusations of injustice and inconsistency by proving that women dont have reason.I know that you firmly believe you are acting in the manner most likely to promote womens happiness; but who made man the exclusive judge of that if woman shares with him the gift of reason?My opinion about the rights and duties of woman seems to flow so naturally from those simple principles that it seems almost inevitable that some of the enlarged minds who formed your admirable constitution will agree with me.Question 8 (Mandatory) (2 points) The document that you read is titled a Dedicatory Letter. What does this mean?Question 8 options:It is a letter asking him to print a public recommendation for her book.It is a letter professing her respect and admiration to him.It is a letter that appears at the beginning of her larger book, a dedication to him.It is a letter that she is mailing to him in advance of the books publication.Question 9 (Mandatory) (2 points) Which meaning of the word abject BEST fits how it is used in the sentence from page 2?They may be convenient slaves, but slavery will have its constant effect, degrading the master and the abject dependent.Question 9 options:despicablehopelessobsoleteshamelessWhat does Wollstonecraft mean when she tells Talleyrand to Consider these remarks dispassionately, Sir, on page 2? What else could she have said and still mean the same thing?A. Distance yourself from this subject.B. Get fired up about this.C. Let your mind wander for a bit.D. Think about this logically. A farmer harvested 1,635 pounds of potatoes. 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Sorry I just don't comprehend word problems Answer quickly please The equilibrium price is commonly called the __________ price.A. productionB. saturationC. cost-efficiencyD. market-clearing Hey guys I really need help can you please come and help me on struggling please help I choose one but that could be wrong Please select the word from the list that best fits the definitionEating a good breakfast on test dayTest anxiety RelaxationVisualizationpreparing your bodypreparing your mindPositive self-talk !00 points!!!!!!!!!!!Which characteristic is related to fascism?A. extreme nationalismB. government control over the economyC. equality for womenD. unity between nationplz answer quick!!!!!! Explain what test marketing is and its purpose? 50 points!! 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