If 7.0 moles of HCl is added to enough iron that the HCl is completely used up, how many
moles of hydrogen gas will be produced?

Answers

Answer 1

Answer:

3.5 mol

Explanation:

Step 1: Given data

Moles of HCl: 7.0 mol

Step 2: Write the balanced equation

Fe(s) + 2 HCl(aq) ⇒ FeCl₂(aq) + H₂(g)

Step 3: Calculate the moles of H₂ gas produced from 7.0 moles of HCl

According to the balanced equation, the molar ratio of HCl to H₂ is 2:1.

7.0 mol HCl × 1 mol H₂/2 mol HCl = 3.5 mol H₂


Related Questions

Increased concentrations of greenhouse gases will lead to HIGHER global temperatures.

True
or
False

Answers

Answer:

[tex]\huge\boxed{\sf True}[/tex]

Explanation:

If the concentrations of greenhouse gases keep increasing, They will absorb more and more long wave energy coming from the sun and radiating from the earth's surface and thus will cause an increase in temperature.

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

Hope this helped!

~AH1807

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Help help help !!!!!!

Answers

Answer:

3. 116.5 V

4. 119.6 V

Explanation:

3. Determination of the voltage.

Resistance (R) = 25 Ω

Current (I) = 4.66 A

Voltage (V) =?

V = IR

V = 4.66 × 25

V = 116.5 V

Thus, the voltage is 116.5 V

4. Determination of the voltage.

Current (I) = 9.80 A

Resistance (R) = 12.2 Ω

Voltage (V) =?

V = IR

V = 9.80 × 12.2

V = 119.6 V

Thus, the voltage is 119.6 V

A sample of hydrogen gas has a volume
of 65.0 mL at a pressure of 0.992 atm
and a temperature of 16°C. What
pressure will the hydrogen gas have
with a volume of 68.0mL and a
temperature of 25°C?

Answers

Answer:

. A sample of hydrogen has a volume of 65.0 mL at a pressure of 0.992 atm and a temperature of 16°c. What volume will the hydrogen occupy at 0.984 atm and 25°c? 2. A sample of nitrogen collected in the laboratory occupies a volume of 725 mL at a pressure of 0.971 atm. What volume will the gas occupy at a pressure of 1.40 atm, assuming the ...

Explanation:

PLEASE HELP ME PLEASE!!

Answers

Answer:

1: f 2: b 3: d 4: e 5:a 6:c

Explanation:

help, if anyone knows the correct answer??​

Answers

It’s will not change

g Hydrogen iodide, HI, decomposes at moderate temperatures according to the equation The amount of I2 in the reaction mixture can be determined from the intensity of the violet color of I2; the more intense the color, the more I2 in the reaction vessel. When 3.80 mol HI was placed in a 5.00-L vessel at a certain temperature, the equilibrium mixture was found to contain 0.443 mol I2. What is the value of Kc for the decomposition of HI at this temperature

Answers

Answer:

Equilibrium constant, Kc = 0.023

Explanation:

Equation for the decomposition of Hydrogen iodide is given below:

2HI ----> H₂ + I₂

Initially, the number of moles of the reactant and the products are given as follows:

n(HI) = 2 * 3.800 moles = 7.600 moles

nH₂) = 0.000 moles

n(I₂) = 0.000 moles

At equilibrium, the equation becomes: 2HI <----> H₂ + I₂

Number of moles of the reactant and the products are given as follows:

n(HI) = 7.600 - (0.886 + 0.886) moles = 5.828 moles

nH₂) = 2 * 0.443 = 0.886 moles

n(I₂) = 2 * 0.443 = 0.886 moles

Equilibrium constant, Kc = [H₂] [I₂] / [HI]²

Equilibrium constant, Kc = (0.886) * (0.886) / (5.828)²

Equilibrium constant, Kc = 0.023

PLZZZZ HELPP NOWW!!
According to the law of conservation of mass, what is the mass of water
formed in this reaction?
H2
+
02
32.00 g
2H20
?
2.02 g
A. 36.04 grams
B. 55.92 grams
C. 72.08 grams
D. 27.96 grams

Answers

Answer:

The law of conservation of mass states that mass in an isolated system is neither created nor destroyed by chemical reactions or physical transformations.

According to the law of conservation of mass, the mass of the products in a chemical reaction must equal the mass of the reactants.

The law of conservation of mass is useful for a number of calculations and can be used to solve for unknown masses, such the amount of gas consumed or produced during a reaction.

Answer:

A. 36.04 grams

Explanation:

A.P.E.X

Balanced or Unbalanced? Write a “B” for Balanced and a “U” for Unbalanced.
______ 11.CH4 + O2 à CO2 + 2 H2O
______ 12. NaBr + CaF2 à NaF + CaBr2
______ 13. 4 Fe + 3 O2 à 2 Fe2 O3

Answers

11. U
12. U
13. B
Good luck!

what are the two elements found in silicon dioxide​

Answers

silicon and oxygen are the two elements

What does the article “Absolute Zero” tell us about what temperature really means?

Answers

Answer:

Absolute zero, technically known as zero kelvins, equals −273.15 degrees Celsius, or -459.67 Fahrenheit, and marks the spot on the thermometer where a system reaches its lowest possible energy, or thermal motion. There's a catch, though: absolute zero is impossible to reach.

Explanation:

Please answer by the number ! I will mark any correct answer brainliest :)

Answers

Answer:

36 joules is the answer

1/2mv^2

1/2* 8*3*3

4*9

36joules

Describe the process of two neutral atoms forming an ionic bond

Answers

Two neutral atoms, one being a nonmetal and the other a metal, form an ionic bond when the nonmetal uses energy to remove valence electrons from the metal.
Since a metal is not very electronegative but a nonmetal is, the nonmetal can remove the metal’s valence electrons.

In a perfect scenario, both atoms, now ions, will have octets. An octet is formed when an ion has a full valence shell (usually noted with 8 valence electrons).

oops...  sorry...  I need to delete this response.  I was trying to answer a different question,

is clorox an acid or base? ​

Answers

Answer:

Chlorine bleach is strongly basic. We actually make it by dissolving chlorine gas in a concentrated solution of sodium hydroxide, which forms sodium hypochlorite and sodium chloride, in the following equilibrium.

Explanation:

BTS ARMY

Suppose an EPA chemist tests a 250.mL sample of groundwater known to be contaminated with nickel(II) chloride, which would react with silver nitrate solution like this: NiCl2(aq) + 2AgNO3(aq) → 2AgCl(s) + NiNO32(aq) The chemist adds 15.0mM silver nitrate solution to the sample until silver chloride stops forming. He then washes, dries, and weighs the precipitate. He finds he has collected 5.8mg of silver chloride. Calculate the concentration of nickel(II) chloride contaminant in the original groundwater sample. Round your answer to 2 significant digits.

Answers

Answer:

0.0010 w/v %

Explanation:

Based on the reaction:

NiCl₂(aq) + 2AgNO₃(aq) → 2AgCl(s) + Ni(NO₃)₂(aq)

Finding the moles of AgCl produced we can find the moles of NiCl in the reaction medium and its mass:

Moles AgCl -Molar mass: 143.32g/mol-:

5.8mg = 5.8x10⁻³g * (1mol / 143.32g) = 4.047x10⁻⁵ moles AgCl

Moles NiCl₂:

4.047x10⁻⁵ moles AgCl * (1mol NiCl₂ / 2mol AgCl) = 2.023x10⁻⁵ moles NiCl₂

Mass NiCl₂ -Molar mass: 129.60g/mol-:

2.023x10⁻⁵ moles NiCl₂ * (129.60g / mol) = 2.62x10⁻³g of NiCl₂ are produced.

And the concentration in w/v% is:

2.62x10⁻³g NiCl₂ / 250mL * 100 =

0.0010 w/v %

How many molecules are there in 4.3 moles of calcium sulphate ?

Answers

Answer:

The law companies that value excessive ethics comply with the legal guidelines not solely in letter however go past what is stipulated 1 My proudest accomplishment is organizing a donation pressure aimed at helping the less fortunate humans skills

Explanation:

My bedroom is very clean and big closest it color

PLS HELP TEST IS TIMED!!
The temperature of a solution can change the solubility of a substance. The chart shows the solubility of the same solute at different temperatures in water.


A 3-column table with 4 rows. The first column labeled solution has entries W, X, Y, Z. The second column labeled temperature degrees C has entries 40, 59, 55, 48. The third column labeled grams per 100 grams of water has entries 50, 200, 150, 80.

Based on the chart, which solution was at the optimal temperature to allow for the greatest solubility?

Answers

Answer:

Temperature can change the solubility of a solute.

Explanation:

Answer:

Temperature can change the solubility of a solute.

Explanation:

If you know, answer this. If you don’t know this, don’t second guess

Answers

Answer:

1 and the element is hydrogen (there is an exception for the octet rule for the element hydrogen) hope this helps

Explanation:

Help! What is this question I do not understand

Answers

Answer:

A 70%

B 92%

C 87%

D 79%

Explanation:

This excercise is about dividing water by liquid.

hellpppppppp me pleaseeeeeeeee
what element is this?????/

Answers

Answer:

Helium

Explanation:

Answer:

the element is helium as it's mass number is 4 and number of electrons is equal to it's atomic no. which is 2

Which states have no oil or gas production?​

Answers

Answer:

Georgia and minessota

Explanation:

they have no production

I believe it’s:

Minnesota and Georgia.

Hope this helps! :)

I NEED HELP!!!!! IM TIMEDDDD! HELP PLZZZZ!!!!

Answers

Answer:

a

Explanation:

i’m like pretty sure that the answer is d

Use Lewis dot structures to show the ionic bonding in the following pairs of elements. Show the transfer of electrons using arrows. Write the correct chemical formula for the ionic compound that forms.
1) barium oxide (Ba and O)
2) sodium oxide (Na and O)
3) calcium chloride (Ca and Cl)
4) sodium nitride (Na and N)
5) aluminum oxide (Al and O)
6) magnesium phosphide (Mg and P)

Answers

Answer:

See explanation

Explanation:

A Lewis structure is a representation of atoms of elements using dots. These dots show the number of outermost electrons in the atom. These outermost electrons are involved during ionic bonding.

We can see from the image attached that in ionic bonding, electrons are transferred from the metal to the non metal to form the ionic compound. Arrows have been used to show the transfer of electrons from metals to non metals.

The type of potential energy related to an object's height

Answers

Answer:

the answer is gravitational potential energy

Answer:

Since the gravitational potential energy of an object is directly proportional to its height above the zero position, a doubling of the height will result in a doubling of the gravitational potential energy. A tripling of the height will result in a tripling of the gravitational potential energy.

Explanation:

Hope this helps?

What is the name or symbol of the element in group 17 and
period 3 of the periodic table?

Answers

Answer:

Chlorine

Explanation:

Chlorine is the element located in period 3, group 17 of the periodic table.

Convert 23.92 mm to meter

Answers

Answer:

0.02392 m

Explanation:

Kilo - Hecto - Deka - Meters/Liters/Grams - Deci - Centi - Milli

23.92 mm ---> 0.02392 m

Basically move the decimal 3 units to the left.

Hope this helps and stay safe, happy, and healthy, thank you :) !!

Counting Atoms in Compound 8cl2o

Answers

I think there are 10 atoms ?

help and will give brainly. PLEASEEEEEEEEEEEEEEE!!!!!

Answers

The answer is snake and earthworm

What is the invisible area of force extending out from the poles?
Magnetic field
Solenoid
Magnets
Current flow

Answers

Answer:

Magnetic field

Explanation:

describe which process in the water cycle the water in each picture will go through next will go through next.

Answers

Answer:

water vapour I guess I the answer of your question

What would be the mass in amu of 150 atoms of carbon?

Answers

Answer:

Do you mean the periodic table? The atomic mass of carbon is 12 and oxygen is 16.

If I understand you right though, what you’re looking for is what oxygen’s mass would be in a certain unit of measurement with which carbon weighs 150 units.

In regular atomic mass units carbon’s mass is 12 and oxygen’s is 16, so oxygen’s mass is 4/3 times carbon’s mass. In our new unit of measurement where carbon weights 150 units, oxygen would weigh 150 * 4/3 = 200 units.

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PLEASE HELP ME PLEASE!! A crow is flying at 50 miles per hour takes 30 minutes to fly between two towns. What is thedistance between the two towns in miles? True or false: Equal but opposite forces pushing on the same object produce a net force of zero on the object. Answer this correctly Ill give brainalist + 10 points Red meats, gravy, and salad dressing are high in this nutrient 100 point and brainlist answer the question below Is it 1,2,3 or 4Look at the picture. Thank u! WILL MARK BRAINLIEST IF RIGHT DONT ANSWER IF U DONT KNOWWWW PLZ HELP ILL MARK U BRAINLIEST!! Kaja completed construction of her rases flowerbed project and is ready to begin fing with sol. The rased flower bed is in the stage of a rectanguliza prism and has dimensions as shown belon Each bag of sol cortans 15 cubic feet of soil. How many fudbags of so wil Kaja need to buy to fi her Sower bed?A)16B)21C)27D)32 A company charges $25 to rent a moving van plus $.50 for each mile traveled. Write an expression for the total cost of renting the van and driving d miles. What is your total cost for renting the van and driving 20 miles? PLEASE HELP ASAP GEOMETRY 20 POINTS REAL ANSWERS ONLY!Find the missing parts of the triangle. Round to the nearest tenth when necessary or to the nearest minute as appropriate.C = 122.2a = 8 kmb = 10.4 km 17 = 5-x what's the answer Choose the best revision for the run on sentence3. Ostriches cannot fly, their long, muscular legs are built well for running.A. Ostriches cannot fly; their long, muscular legs are built well for running. B. Ostriches cannot fly their long, muscular legs are built well for running.C. Ostriches cannot fly, but their long, muscular legs are built well for running. Why might some people think capitalism is a better way to run an economy? Which answer is the best revision of the sentence fragment? Enduring a difficult situation all on your own? 1)Enduring a difficult situation all on your own, you? 2)Enduring a difficult situation you will find is hard to do all on your own. 3)On your own, is you enduring a difficult situation? 4)Are you enduring a difficult situation all on your own? What was Thurgood Marshalls role in the Brown v. Board of Education decision? A. As a lawyer for Topeka Board of Education, he argued in favor of segregationB. As a Supreme Court justice, he voted against segregationC. As a civil rights leader, he led marches against segregationD. He argued in front of the Supreme Court as the Brown family's lawyer What lies are told about Boxer's Death in Animal Farm Chapter 9? 1. Where is Limetown located? Iwo Jima was one of the hardest fought battles of the Pacific. Who was able to take over the island at the end of the fight? A. Germany B. Italy C. Japan D. United States