Chemistry High School

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 1

Answer:

82 g S

Explanation:

If 95 Grams Of Iron Are Needed To React With Sulfur, How Many Grams Of Sulfur Are Involved In This Reaction?
Answer 2

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.

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Related Questions

is the distilled water/acidic/basic/netural?​

Answers

Distilled water is neutral, because the H+ and OH- ions are balanced. Litmus is a natural acid-base indicator extracted from a type of lichen.

Distilled Water Has A Neutral pH, Which Means It Is Neither Acidic Nor Basic. Therefore, It's Neutral.

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

3. The mass percent of nitrogen in NH4Cl is *
O 16.7% nitrogen
0 25.0% nitrogen
0 26.2% nitrogen
O none of these

Answers

Answer:

None of these

Explanation:

The mass percent is 35.4% (3 s.f.)

14/4+35.5 = 14/39.5 x 100 = 35.4 (3 s.f.)

How can an unbalanced force affect an object?
O Unbalanced forces keep an object at rest.
Unbalanced forces cause objects to accelerate.
O Unbalanced forces cannot affect on object.

Answers

Unbalanced forces cause objects to accelerate. This is respecting Newton’s 1st law of motion.

Scientific investigations must be well __________ to be sure the data collected will help answer the scientist's question

Answers

Answer:

The answer is relevant.

Scientific investigations must be well relevant to be sure the data collected will help answer the scientist's question.

What is a scientific investigation?

A scientific investigation is an investigation that is done in the field of science. This unravels the secrets of the earth and the logical reason behind the things happening.

There are three types of scientific investigations. They are descriptive investigation, comparative investigation, and experimental investigation. When we see a thing happening in the environment or anywhere, always find a reason behind it.

The steps in completing a scientific investigation are:

Asking questionsTo make a hypothesis.Performing research.Making an observation.Analyzing the result.

Thus, the scientific investigations must be well relevant to the data.

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3 points
5. Which of the following is true regarding the atoms involved in a
chemical reaction? *
a) During a chemical reaction, atoms will always be combined into much larger
molecules.
b) Some of the atoms will always be changed into a different type of atom by a
chemical reaction.
c) Some of the atoms present before the reaction will always be lost during a
chemical reaction.
d) The same number of each type of atom will always be present before and after a
chemical reaction takes place.

Answers

d) The same number of each type of atom will always be present before and after a chemical reaction takes place.

Mass is never created or lost in a chemical reaction, so the atoms of each element must stay balanced.

What is needed for our cells to get energy from our food?

Answers

Answer:

cellular respiration is needed for our cells to get energy from our food.

Explanation:

Through the process of cellular respiration, the energy in food is converted into energy that can be used by the body's cells. During cellular respiration, glucose and oxygen are converted into carbon dioxide and water, and the energy is transferred to ATP.

True or false? To prepare 20.0 mL of 2.00 M solution of hydrochloric acid from a 10.0 M stock solution, you should take 4.00 mL of the stock solution and add 20.0 mL of water.

Answers

Sorry I don’t know but o have to answer for pionts

False. To prepare 20.0 mL of 2.00 M solution of hydrochloric acid from 10.0 M stock solution, 4.0 mL of the stock solution and 16.0 mL of water would be needed.  

Recall the law of diffusion that:

C1V1 = C2V2, where C1 = initial concentration, V1 = initial volume, C2 = final concentration, and V2 = final volume.

In this case, if C1 =10.0 M, V1 = ?, C2 = 2.00 M and V2 = 20.0 mL

V1 = 2 x 20/10

         = 4.0 mL

Hence, 4.0 mL of the stock solution would be taken. Since the final volume is 20.0 mL, only 16.0 mL of water would need to be added and not 20.0 mL.

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Help plz 10 pointsss———-

Answers

first would be homeostasis, second is a wolf panting after chasing

Answer:

the first question is homeostasis. and the second question is the wolf panting

Explanation:

let me know if u need an explanation n ill try to give one :)

is it true or false?

Answers

Answer:

The rainforest is teeming with animals and insects, so you would hear  humming. Frogs and birds make some of the loudest rainforest sounds.

howler monkeys, are the loudest so i think that its false cause lost of animals are there but some can be quiet

List at least three things that your body strives to keep constant. (9 points) Think about what
aspects of your body overall, of one body organ, or of your blood stay nearly unchanged all the time

Answers

Answer:

Temperature, heart rate and blood flow.

Explanation:

The three things that our body strives to keep constant in overall body aspect are Temperature, heart rate and blood flow.

What is the Importance of Life process ?

Life processes are important to carry out daily life activities. They help to produce energy and maintain homeostasis in the body. The life processes help a body survive with the changes in the environment.

A slight disturbance in any of the life processes disturbs the entire functioning of the body.

Therefore ,

The Three things that our body strives to keep constant in overall body aspect are Temperature, heart rate and blood flow.

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What is the number of particles in 15.0 g of H2O?

Answers

Answer:

We know that 18 g of H2O contains 1 mole (or 6.022 x 10^23) molecules of water because the molar mass of H2O is 18 g/mol.

So 1 g water will contain 1/18 moles of H2O molecules.

Now 15 g of water will contain 15/18 moles of H2O.

So molecules of H2O = (15/18) x 6.022 x 10^23 = 5 x 10^23 molecules.

Explanation:

I learned this in science hope this helps.

Is specific heat capacity always equal to heat capacity?

Answers

Answer:

No specific heat capacity and heat capacity are not equal

Calculate the calories of heat required to melt 35.0 g of ice.

Answers

Answer:

35.0g of ice at 0 degrees

Explanation:

An experiment requires 0.38 M NH3(aq). The stockroom manager estimates that 15 L of the base is needed. What volume of 15 M NH3(aq) will be used to prepare this amount of 0.38 M base? Answer in units of mL.

Answers

Answer:

480 mL

Explanation:

15L  of  0.38M of NH3(aq.) means that we require 15x0.38 moles of NH3.

this is to be provided by 15M x V.  

Where V is volume in Liters.

These are equal  

⇒15M x V = 15x 0.48  

Hence, Volume required V = 0.48L =480mL

The chemical symbols of hydrogen, calcium and chlorine are:

H, C, Cl
H, C, Cn
H, Ca, Cl
Hn, Cal, Cl

Answers

Answer:

H, Ca, Cl is the answer dude

Answer:

hydrogen is H

calcium is Ca and chlorine is Cl

The United States has landed a device on Mars.

Answers

Answer:

They landed a Rover!

Explanation:

Isn't that Awesome!?!

is Tungsten carbide an elementary substance
or compound?

Answers

Answer:

Tungsten carbide (chemical formula: WC) is a chemical compound (specifically, a carbide) containing equal parts of tungsten and carbon atoms.

Answer:compound

Explanation:

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

help, please ( rando words )

Answers

Answer:

ionic

Explanation:

Answer:

the answer is ionic

Explanation:

hope this helps!

please can i also have brainliest too?

1. Why do you think it is so important to think about momentum in the NASCAR world? Use the
equation for momentum (momentum = mass times velocity) in your answer. (Hint: NASCAR
drivers drive really fast.] 1 point

Answers

Answer:

because it is

Explanation:

simple

Answer:

Explanation: none

What is the formula for S2O5

Answers

Answer:

chemical formula

Explanation:

(PHYSICAL SCIENCE) Help please !!

Answers

The answer is 4 !!!!!
I think the answer is 4 hope it’s right..

PLEASE HELP ME!!!

A 38.8g piece of metal alloy absorbs 181J as its temperature increases from 25.0°C to 36.0°C°. What is the alloy's specific heat? Show your work.

Answers

Answer:

0.424 J/g °C

General Formulas and Concepts:

Math

Pre-Algebra

Order of Operations: BPEMDAS

Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to Right  

Equality Properties

Multiplication Property of Equality Division Property of Equality Addition Property of Equality Subtraction Property of Equality

Chemistry

Thermochemistry

Specific Heat Formula: q = mcΔT

q is heat (in Joules)m is mass (in grams)c is specific heat (in J/g °C)ΔT is change in temperatureExplanation:

Step 1: Define

[Given] m = 38.8 g

[Given] q = 181 J

[Given] ΔT = 36.0 °C - 25.0 °C = 11.0 °C

[Solve] c

Step 2: Solve for Specific Heat

Substitute in variables [Specific Heat Formula]:                                             181 J = (38.8 g)c(11.0 °C)Multiply:                                                                                                             181 J = (426.8 g °C)c[Division Property of Equality] Isolate c:                                                         0.424086 J/g °C = cRewrite:                                                                                                             c = 0.424086 J/g °C

Step 3: Check

Follow sig fig rules and round. We are given 3 sig figs.

0.424086 J/g °C ≈ 0.424 J/g °C

Lunar Eclipse. Choose ALL that apply

Question 1 options:

Earth casts its shadow on the moon


The moon turns dark


Light from the sun is blocked


Earth is directly between the moon and sun

Question 2 (0.5 points)
Solar Eclipse: Choose ALL that apply

Question 2 options:

The Earth is directly between the moon and sun


Earth casts a shadow on the moon


Moon moves between the sun and Earth


The moon blocks out the light of the sun and casts a shadow onto the Earth

Answers

In this exercise we have to use the knowledge of lunar eclipse to identify the alternatives that correspond to this effect, as follows:

Light from the sun is blockedEarth is directly between the moon and sun

What is lunar eclipse?

A lunar eclipse happens when the Earth is between the Moon and the Sun, at times when they are aligned. Depending on the position of the Moon, it is total, partial or penumbral. Different stages of a lunar eclipse on a full moon night.

Now,  use the knowledge of solar eclipse to identify the alternatives that correspond to this effect, as follows:

Moon moves between the sun and EarthThe moon blocks out the light of the sun and casts a shadow onto the Earth

What is the definition of solar eclipse?

Solar eclipse is an astronomical phenomenon that occurs when the Moon is positioned between the Earth and the Sun, hiding the light emitted by the star towards the planet.

See more about eclipse at brainly.com/question/25105283

After eating, nutrients must be oved to other parts of the body. Which of the following systems will transport these nutrients.

nervous
digestive
circulatory
excretory

Answers

The circulatory system

Answer:

The circulatory system

Explanation:

Is aloe vera a living or non-living thing?

Answers

Answer:

It is a living plant

Explanation:

Bronsted Lowry reactions can use hydroxide ions.
True
False

Answers

Answer:

f

Explanation:

object with a mass of 30 kg is observed to accelerate at the rate of 4 m/s2. Calculate the force required

Answers

this answer is 2kg good luck

what is the mass, in grams, of potassium in 12.5 g of k

Answers

Answer:

Option d)3.32 g is correct.

Explanation:

hope this helps

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