Please help I have been stuck on this problem for a couple hours and can't figure it out

Please Help I Have Been Stuck On This Problem For A Couple Hours And Can't Figure It Out

Answers

Answer 1

Answer:

11.92 Liters O₂(g) at STP

Explanation:

For most stoichiometry problems, if one will convert all given data into moles, solve by rxn ratios, then finish by converting to needed dimensions to complete problem.

2Pb(NO₃)₂ => 2PbO + 4NO₂ + O₂

Given 237.5 grams PbO formed in reaction = 237.5 g/223.2 g/mole = 1.064 mole PbO

From equation ratios, moles O₂ formed = 1/2(moles PbO) = 1/2(1.064 moles O₂) = 0.532 mole O₂

0.532 mole O₂ = 0.532 mole x 22.4  liters/mole at STP = 11.91756272 liters (calculator answer) ≅ 11.92 liters O₂ at STP (4 sig.figs. based on given 237.5g PbO)


Related Questions

Type the correct answer in the box. Express your answer to two significant figures. You are performing a reaction with 1.7 moles of hydroiodic acid and 3.43 moles of zinc bromide: 2HI + ZnBr2 → 2HBr + ZnI2. How many moles of zinc iodide can be made? The theoretical yield is moles of zinc iodide.

Answers

Answer:

1.34 34343 he did

Explanation:

i did the test

Answer:

0.85

Explanation:

hii pls help me to balance the equation thanksss​

Answers

Answer:

[tex]{ \bf{2P _{(s)} + 5Cl _{2(g)} → 2PCl _{5(s)}}}[/tex]

▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓

[tex]\boxed{\pmb{\purple{\sf{2P(s) + 5Cl _{2}(g)\dashrightarrow 2PCl _{5}(s)}}}}[/tex]

▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓

process of heat treatment and it's meaning

Answers

Answer:

Heat treatment is the process of heating metal without letting it reach its molten, or melting, stage, and then cooling the metal in a controlled way to select desired mechanical properties. Heat treatment is used to either make metal stronger or more malleable, more resistant to abrasion or more ductile.

What are the units of molar mass?
A. L/g
B. mol/g
C. g/L
D. g/mol
SUBST

Answers

Answer:

D - g/mol

step by step method

D
I think its the best answer

What is a cold front? What kind of weather can you expect there?

Answers

Hope this helps! Please make me the brainliest, it’s not necessary but appreciated, I put a lot of effort and research into my answers. Have a good day, stay safe and stay healthy.
A cold front is basically just a boundary of an advancing mass of cold air. Cold fronts bring a sudden drop in temperature resulting in weather such as heavy rain, occasionally with hail, thunder, and lightning.

When a solid dissolves in a liquid, it is termed

Answers

A solid dissolves in a liquid when it mixes completely with the liquid. ... Things which dissolve are called solutes and the liquid in which they dissolve is called a solvent to form a solution

Answer:

Soluble

Explanation:

hope this helps

what apparatus is used to investigate the conductivity of solutions​

Answers

The conductivity apparatus consists of an electric lamp in series with open electrodes. The electrodes will fit inside a 50 ml beaker containing the liquid to be tested. The electrodes are to be rinsed thoroughly with distilled water between testing the different samples.


PLZ HELP which ia an example of a scientist using a physical model to describe a river
A. the scientists thinks of a river like a flow of electrons
B. the scientists builds a model of the river using plastic and a hose
C. the scientists writes an equation that describes the flooding of the river
D. the scientists uses a computer to predict how much water will flow​

Answers

B is correct. The model of the river is an example of a physical model.

help pls I really need the answer I will brainlest​

Answers

Answer:

Latitude: the angular distance of a place north or south of the earth's equator, or of a celestial object north or south of the celestial equator, usually expressed in degrees and minutes. (Left to right)

Longitude: the angular distance of a place east or west of the meridian at Greenwich, England, or west of the standard meridian of a celestial object, usually expressed in degrees and minutes. (Up and down)

A sample of gas occupies 1.2 L at 12.0oC. Assuming pressure remains the same, what would be the volume (in L) of this gas at 67oC?

A.
1.4

B.
1.0

C.
0.2

D.
5.0

E.
6.7

Answers

Answer:

e.

6.7

hope it help

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which orbital has the lowest energy

Answers

Answer:

s orbital

Explanation:

it has the lowest energy because

Paulis law state that orbitals with lower energy must be fill first before that of higher energy

and the s orbital is filled first

Which of the following is an example of applied research?
a. Developing a way to remove dangerous chemicals from water.
b. Looking for life on distance planets
C. Studying how radiation effects humans.
d. Studying how listening to music affects your mood.

Answers

.A.

Explanation:

The example of applied research to developing a way to remove dangerous to chemical resources from chemical water

PLZ HELP ME Which of the following lists the levels of body organization in order from most basic to most complex?
A Tissues, organs, body systems, cells
B. Cells, tissues, organs, body systems
C. Cells, organs, body systems, tissues
D. Tissues, cells, organs, body systems​

Answers

Answer:

It is B

Explanation:

I was able to find my school notes and double-check. I hope you have a nice day!

15. The starting diol for this molecule is
O A. ethanol.
O B. propan-1,3-dioic acid.
O C. propan-1,3-diol.
O D. ethan-1,2-diol.

Answers

Answer with explanation

The starting diol for this molecule is :-The starting diol for this molecule is :-D) ethan-1,2-diol.

Hope my answer is helpful to you ☺️

Infrared waves are an example of heat transfer by
A. convection
B. radiation
C. conduction
D. motion of the air

Answers

Answer:

convection is my correct answer

Propane can be cracked to produce propane and hydrogen. Complete the symbol equation for the reaction.

Answers

Answer:

Explanation:

C3H8= C3H6 +H2

Some species form social groups only with members of the same gender. For example, elephants form groups with
only females and their offspring. Once the male offspring reach a certain age, they leave the group and become
solitary.
Which is a benefit of this type of social group structure?

Answers

Explanation:

For example, elephants form groups with only females and their offspring. Once the male offspring reach a certain age, they leave the group and become solitary. Which is a benefit of this type of social group structure? A:Females do not have to compete for a mate.

What is the balanced form of the chemical equation shown below?
C2H5OH() + O2(9)
H2O() + CO2(9)
A. C2H5OH() + 302(9) — 3H20() + 2002(9)
B. 2C2H5OH() + O2(g) – 5H20(1) + CO2(g)
C. C2H20(1) + 202(9)
-
H20(1) + 2C02(9)
D. C2H5OH() + O2(g) → H20(1) + CO2(g)

Answers

Answer:

C2H5OH +3O2 = 2Co2+ 3H2O

Explanation:

The balanced chemical equation is C2H5OH + 302 → 3H20 + 2CO2.

What is balanced chemical equation?

A balanced chemical equation is one in which the count of atoms in all of the molecules is equivalent on both sides of the equation. The balancing of a particular chemical equation is governed by the Law of Conservation of Mass.

Balancing chemical equation is shown as below:

It can be seen that the count of carbon atom in left side 2 on the other hand the count of carbon in right side only one. By multiply with 2 in right side of the reaction , equation will be balanced.

Therefore, the balanced chemical equation is C2H5OH + 302 → 3H20 + 2CO2.

To know more about balanced chemical equation .

https://brainly.com/question/15052184.

#SPJ2

hii pls help me to balance the equation and state the symbols thanksss​

Answers

Answer:

First you have to write the chemical equation

Fe + Hcl----->FeCl2 + H

to balance this equation you have to put a 2 in front of hydrochloric acid and hydrogen

Fe + 2Hcl----->FeCl2 + 2H

I hope this helps

Answer:

I hope the above link will be of help

Potassium impart purple colour but beryllium do not impart any colour to the flame.Why?​

Answers

Answer:

The electrons in beryllium and magnesium are too strongly bound to get excited by flame. Hence, these elements do not impart any color.

During a reaction, the enthalpy of the reactants and the products are not equal. What does this result in?
O A. Spin of electrons is reversed
O B. Change in chemical composition
O C. None of these
D. Absorption or release of energy

Answers

Answer:c

Explanation:

Answer: C

i think none of these

Explanation:

While driving her car on a hot sunny day, a woman was struck in the back of the neck by the dough from an exploding can of Pillsbury biscuits. From the sound it made and the feeling of warm sticky dough on her neck, she thought she had been hit by a bullet! Describe the likely conditions that caused this to happen. Be sure to explain AT THE MICRO scale how the particles were affected.

Answers

Answer:

The dough is made from flour sugar, baking soda, sometimes yeast. The sugar is converted into gaseous products including carbon dioxide, CO₂ and alcohols. As more gases are produced, the pressure increases, and according to Charles's law, as the temperature on a sunny day is higher than on a cool day, the pressure of the gases increases further, to the point that the can containing the biscuits can not hold the pressure, leading to an explosion

Explanation:

PLZ PLZ PLZ PLZ PLZ PLZ PLZ PLZ PLZ PLZ PLZ PLZ PLZ PLZ HELP ME...... ​

Answers

Answer:

a) clockwise

b) clockwise and

c) anticlockwise

the element of group 1 hour reactive but those of group 18 are inert, why?​

Answers

Answer:

The noble gases (Group 18) are located in the far right of the periodic table and were previously referred to as the "inert gases" due to the fact that their filled valence shells (octets) make them extremely nonreactive.

Can Some One Please Help Me

Answers

Answer:

12 g

Explanation:

From the question given above, the following data were:

Number of atoms = 6.02×10²³ atoms

Mass of ₆C¹² =?

From Avogadro's hypothesis,

1 mole of any substance contains 6.02×10²³ atoms. This implies that 1 mole of ₆C¹² also contains 6.02×10²³ atoms i.e

1 mole of ₆C¹² = 6.02×10²³ atoms

Recall

From the period,

1 mole of ₆C¹² = 12 g

Thus,

12 g of ₆C¹² = 6.02×10²³ atoms

Therefore, 12 g of ₆C¹² contains 6.02×10²³ atoms


How many moles are there in 2.3 x 1024 atoms of
sulfur?

Answers

Explanation:

The steps given in the question are incorrect.

Step 1 should be convert atoms to moles (n). Step 2 should be convert moles (n) to mass (m).

Step 1

Use dimensional analysis to convert the number of atoms to moles.

1 mole atoms = 6.022 × 10²³ atoms

n(Ag) = 2.3 × 10²⁴ Ag atoms × (1 mol Ag/6.022 × 10²³ Ag atoms) = 3.8193 mol Ag

Step 2

Convert the moles of Ag to mass.

mass (m) = moles (n) × molar mass (M)

n(Ag) = 3.8193 mol Ag

M(Ag) = atomic weight on the periodic table in g/mol = 107.868 g Ag/mol Ag

m(Ag) = 3.8193 mol × 107.868 g/mol = 412 g Ag = 410 g Ag rounded to two significant figures

The mass of 2.3 × 10²⁴ Ag atoms is approximately 410 g.

Answer:

[tex]\boxed {\boxed {\sf 3.8 \ moles \ of \ sulfur}}[/tex]

Explanation:

We are asked to convert a number of atoms to moles.

We can convert atoms to moles using Avogadro's Number, which is 6.022 × 10²³. This is the number of particles (atoms, molecules, formula units, etc.) in 1 mole of a substance. In this problem, the particles are atoms of sulfur. There are 6.022 ×10²³ atoms of sulfur in 1 mole of sulfur.

We use dimensional analysis to convert atoms to moles. This involves setting up ratios. Use Avogadro's Number and the underlined information to make a ratio.

[tex]\frac {6.022 \times 10^{23} \ atoms \ S}{1 \ mol \ S}[/tex]

We are converting 2.3 ×10²⁴ atoms of sulfur to moles, so we multiply by this value.

[tex]2.3 \times 10^{24} \ atoms \ S *\frac {6.022 \times 10^{23} \ atoms \ S}{1 \ mol \ S}[/tex]

Flip the ratio. It is equivalent, but it allows the units of atoms of sulfur to cancel.

[tex]2.3 \times 10^{24} \ atoms \ S *\frac {1 \ mol \ S}{6.022 \times 10^{23} \ atoms \ S}[/tex]

[tex]2.3 \times 10^{24} *\frac {1 \ mol \ S}{6.022 \times 10^{23} }[/tex]

[tex]\frac {2.3 \times 10^{24} }{6.022 \times 10^{23} } \ mol \ S[/tex]

[tex]3.819329127 \ mol \ S[/tex]

The original measurement of atoms (2.3 ×10²⁴) has 2 significant figures, so our answer must have the same. For the number we calculated that is the tenths place. The 1 in the hundredths place to the right (3.819329127) tells us to leave the 8 in the tenths place (3.819329127).

[tex]3.8 \ mol \ S[/tex]

2.3 ×10²⁴ atoms of sulfur is equal to approximately 3.8 moles of sulfur.

possible isomers of C4H9I​

Answers

Answer:

there are 4 possible isomers

wer the following questio What is meant by a solutio What is a saturated solutio Define: give an example.

Answers

Answer:

A solution in which the maximum amount of solvent has been dissolved. Any more solute added will sit as crystals on the bottom of the container.

Explanation:

A solution in which the maximum amount of solvent has been dissolved. Any more solute added will sit as crystals on the bottom of the contain

er.

What is reducing agent in the following reaction-
CuO + H2 ------>Cu + H2O?
A)CuO
B)Cu
C)H2O
D)H2

Answers

Answer:

H2

Explanation:

It helps to remove the oxygen

Answer:

It is H2. hope it helps if not sorry

Having a control group is important when doing an investigation why?

Answers

Answer:to help understand the stuff more

Explanation:

Mark Brainliest please

Answer :

Dependent variable depends on the independent variable. ... In a control group in an experimental investigation the independent variable is omitted. Thus the goal is to test if the dependent variable shows any change in the absence of the independent variable.
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