URGENT HELP
26. A solution of hydrogen peroxide is 23.3% H2O2 by mass and has a density of 1.11
g/cm”. The molarity of the solution is:
a) 7.14 M
b) 0.259 M
c) 7.60 M
d) 7.93 M
e) none of these

Answers

Answer 1
The answer is option C 7.60 M

Related Questions

Diseña un procedimiento que te ayudaría a obtener agua en el desierto usando como fundamento la destilación?

Answers

Answer:b

Explanation:

I searched it

gallium sulfide reacts with mercury(I) chloride

Answers

Answerquit

Explanation:snns

where was the first oil well drilled​

Answers

Answer:

First oil well in the United States, built in 1859 by Edwin L. Drake, Titusville, Pennsylvania.

Which of the following explains the VSEPR geometry of a water molecule?



O It is tetrahedral because there are four bonded pairs around oxygen.
O It is bent because there are four bonded pairs around oxygen.
O It is tetrahedral because there are two bonded pairs and two lone pairs around oxygen.
O It is bent because there are two bonded pairs and two lone pairs around oxygen.

Answers

It is bent because there are two bonded pairs and two lone pairs around oxygen.

According to VSEPR theory, geometry of water molecule is bent.

Water is a simple molecule consisting of one oxygen atom bonded to two different hydrogen atoms. The molecule adopts a bent structure because of the two lone pairs of electrons on the oxygen atom.The total number of electron pairs in the valence shell of the oxygen atom is 2.The resulting molecular shape is bent with an H-O-H angle of 104.5°.

Learn more:

brainly.com/question/12775505

Answer:

It is tetrahedral because there are two bonded pairs and two lone pairs around oxygen.

Explanation:

Took it

ion has a mass number of 65, 36 neutrons, and a charge of +1
. Identify the element symbol, and determine the number of protons and electrons in this ion.

Answers

Answer:

Copper; Symbol is Cu

Protons = 29

Electrons = 29

Mass number = Protons + Neutrons

•°• Protons = Mass number - Neutrons

= (65-36)

= 29

Electrons is equal to the number of protons in a nucleus.

HELP NEEDED!!!
80.0 mL of Ba(OH)2(aq) solution is used to completely titrate 60.0 mL of 0.150 mol/L HCl(aq) solution. What is the concentration of the barium hydroxide solution in mol/L.

Answers

Answer:

0.1125  mol/L

Explanation:

application fomula:

C1V1=C2V2

C1 is concentration of Ba(OH)2

V1 is volume of Ba(OH)2

C2 is concentration of HCl

V2 is volume of HCl

The reactants of two chemical equations are listed.

Equation 1: CuSO4 and NaOH
Equation 2: Fe and CuSO4

Based on the type of reaction, which reaction can be used to extract copper metal from copper sulfate solution?

A - Equation 2, because Fe being more reactive, replaces Cu from CuSO4
B - Equation 2, because Fe being more reactive, replaces S from CuSO4
C - Equation 1, because Na being more reactive, exchanges position with Cu in CuSO4
D - Equation 1, because Na being more reactive, exchanges position with S in CuSO4

Answers

The reaction that can be used to extract copper metal from copper sulfate solution would be equation 2.

Fe will displace Cu from CuSO4 because it is more reactive. In other words, Fe ranks higher than Cu in the reactivity series.

Thus:    [tex]Fe + CuSO_4 ---> Cu + FeSO_4[/tex]

Even though Na will displace Cu from CuSO4, equation 1 will result in the formation of Cu(OH)2 instead of free Cu because it is a double replacement reaction.

More on copper production can be found here: https://brainly.com/question/13677872?referrer=searchResults

Give an example of each of the following chemical changes.
(a) A photochemical reaction involving
(i) silver salt
(ii) water

(b) A reaction involving
(i) blue solution
(ii) formation of dirty green precipitate

(c) Two gases combine to form white solid.

(d) A reaction where colour change is noticed.​

Answers

Answer:

Give an example of each of the following chemical changes.

(a) A photochemical reaction involving

(i) silver salt

(ii) water

(b) A reaction involving

(i) blue solution

(ii) formation of dirty green precipitate

(c) Two gases combine to form white solid.

(d) A reaction where colour change is noticed.​

Explanation:

a) A photochemical reaction involving  silver salt is used in black and white photography.

AgCl breaks down and converts into Ag during this photochemical reaction.

(ii) Photochemicalreaction involving water takes place in plants during the photosynthesis process.

Plants prepare food(carbohydrate) by using sunlight water and CO2 gas.

(b) A reaction involving

(i) blue solution:

For example reaction of copper sulfate solution with an iron nail.

When an iron nail is placed in CuSO4 blue color solution, then it changes to green color and reddish-brown solid deposits at the bottom of the container.

(ii) Reaction of ferrous sulfate with NaOH forms a dirty green precipitate of ferrous hydroxide.

(C) Two gases combine and form a white solid:

For example when HCl gas reacts with ammonia gas, then a white solid of ammonium chloride will be formed.

(d)  A reaction where the color change is noticed.:

When an iron nail is placed in CuSO4 blue color solution, then it changes to green color and reddish-brown solid deposits at the bottom of the container.

Arrange the compounds in order of increasing entropy (S).

CH3OH(s)

CH3OH(l),

CH3OH(g),

CH3CH2OH(g)



CH3OH(s) > CH3OH (l) > CH3OH(g) > CH3CH2OH(g)


CH3OH(s) < CH3OH (l) < CH3OH(g) < CH3CH2OH(g)

Answers

Answer: The given compounds are arranged in order of increasing entropy (S) as [tex]CH_{3}OH(s) < CH_{3}OH(l) < CH_{3}CH_{2}OH < CH_{3}OH(g)[/tex]

Explanation:

The degree of randomness present in a substance is called entropy.

This means that more is the number of molecules weakly held together and rapidly moving from one place to another more will be its entropy.

In solids, the molecules are held together strongly with each other. So, they will have least entropy.

In liquids, the molecules are a little loosely held together. So, they have more entropy than a solid substance.

In gases, the molecules are held by weak forces due to which they move rapidly from one place to another. Hence, gases have high entropy as compared to solids and liquids.

Also, more is the molecular mass of a gas less will be its rate of effusion. Hence, less will be its entropy.

[tex]Rate of effusion \propto \frac{1}{\sqrt{M}}[/tex]

where,

M = molecular mass

Thus, we can conclude that given compounds are arranged in order of increasing entropy (S) as [tex]CH_{3}OH(s) < CH_{3}OH(l) < CH_{3}CH_{2}OH < CH_{3}OH(g)[/tex]

Identify the substance which has same number of molecules in 14g N2
a) 3.4g NH3
b) 15g NO
c)64g O2
d) 32g SO2
e)1g H2

Answers

We need to know the number of molecules which is number of moles * Avogadro’s number
So
We need to compare number of moles because Avogadro’s numbers is constant for all
We’ll start with Nitrogen gas : 14g/28g.mol=0.5 mole

For NH3 : 3.4g / (14+3)g.mol= 0.2 mol
For NO. : 15g/(14+16)g.mol = 0.5 mol
For O2 : 64g/32 g.mol = 2 mol
For SO2: 32g /( 32+32) g.mol = 0.5mol
For H2. : 1g/ 2g.mol = 0.5 mol

So
H2& SO2 & NO have the same number of moles of N2 and the same number of molecules of N2

A 30. g sample of Aluminum was heated to 40. 0C and placed in a calorimeter containing 50. g of water at 21 0C. What is the final temperature of the aluminum-water system if the cAl = 0.21 cal/g0C and cwater = 1.0 cal/ g 0C.

Write the complete equation you will use. 1 point

Substitute the values in the equation in step 1 . 1 point

Report the math answer with 2 sig figs and the correct unit. 1 point

Answers

Answer: The final temperature will be [tex]23^oC[/tex]

Explanation:

Calculating the heat released or absorbed for the process:

[tex]q=m\times C\times (T_2-T_1)[/tex]

In a system, the total amount of heat released is equal to the total amount of heat absorbed.

[tex]q_1=-q_2[/tex]

    OR

[tex]m_1\times C_1\times (T_f-T_1)=-m_2\times C_2\times (T_f-T_2)[/tex]           ......(1)

where,

[tex]C_1[/tex] = specific heat of aluminium = [tex]0.21 Cal/g^oC[/tex]

[tex]C_2[/tex] = heat capacity of water = [tex]1Cal/g^oC[/tex]

[tex]m_1[/tex] = mass of aluminium = 30. g

[tex]m_2[/tex] = mass of water = 50. g

[tex]T_f[/tex] = final temperature of the system = ?

[tex]T_1[/tex] = initial temperature of aluminium = [tex]40.^oC[/tex]

[tex]T_2[/tex] = initial temperature of the water = [tex]21.^oC[/tex]

Putting values in equation 1, we get:

[tex]30\times 0.21\times (T_f-40)=-50\times 1\times (T_f-21)\\\\56.3T_f=1302\\\\T_f=\frac{1302}{56.3}=23.13^oC=23^oC[/tex]

Hence, the final temperature will be [tex]23^oC[/tex]

should i microwave a browney

Answers

Answer:

Ha why not but if it is not cooked.

yes and yes and yes and absolutely yes. Yes do it

17) A 0.20 M solution of HCl with a volume of 15.0 mL is exactly neutralized by the 0.10 M solution of NaOH with what volume? HINT: Use the titration formula from table T. First multiply, then divide. o 1.5 mL O 7.5 mL 7 o 3.0 mL 0 30. mL​

Answers

Answer: A 0.20 M solution of HCl with a volume of 15.0 mL is exactly neutralized by the 0.10 M solution of NaOH with 3 mL volume.

Explanation:

Given: [tex]M_{1}[/tex] = 0.20 M,      [tex]V_{1}[/tex] = 15.0 mL

[tex]M_{2}[/tex] = 0.10 M,            [tex]V_{2}[/tex] = ?

Formula used is as follows.

[tex]M_{1}V_{1} = M_{2}V_{2}[/tex]

Substitute the values into above formula s follows.

[tex]M_{1}V_{1} = M_{2}V_{2}\\0.20 M ]times 15.0 mL = 0.10 M ]times V_{2}\\V_{2} = 30 mL[/tex]

Thus, we can conclude that a 0.20 M solution of HCl with a volume of 15.0 mL is exactly neutralized by the 0.10 M solution of NaOH with 3 mL volume.

PLZ HELP!!! QUESTIONS ARE BELOW!!! :D PLZ COMPLETELY ANSWER THE QUESTIONS WITH A GOOD ANSWER :)

Answers

Answer: sorry its lagging i hope this help fore 18.. =D

Explanation:

n,s is repeating the cycle of the inside

Answer/Explanation:

18, a,

I believe the n, and s represents North, South, or just the way the arrows are rotating repeatedly.

18, b,

The phenomenon re-occurring shows the alignment of magnetic dipoles with in a magnet, like inside. The arrows show a direction in the line with an external magnetic field in a way that it can produce its own magnetic fields that seem to travel from North to the South.

18, c,

Incorrect. Refrigerator magnets have multiple layers of magnification, they use opposite polarities to stay this way. If he puts the magnet sideways it may stick to the fridge

~ LadyBrain

Cho m gam FeO tác dụng hết với dung dịch H2SO4, thu được 200 ml dung dịch FeSO4 1M. Giá trị của m là

Answers

Answer: The mass of [tex]FeO[/tex] required is 14.37 g

Explanation:

Molarity is calculated by using the equation:

[tex]\text{Molarity}=\frac{\text{Moles}}{\text{Volume}}[/tex] ......(1)

We are given:  

Molarity of iron (II) sulfate = 1 M

Volume of solution = 200 mL = 0.200 L (Conversion factor: 1 L = 1000 mL)

Putting values in equation 1, we get:

[tex]\text{Moles of }FeSO_4=(1mol/L\times 0.200L)=0.200mol[/tex]

The chemical equation for the reaction of FeO with sulfuric acid follows:

[tex]FeO+H_2SO_4\rightarrow FeSO_4+H_2O[/tex]

By stoichiometry of the reaction:

If 1 mole of iron (II) sulfate is produced by 1 mole of FeO

So, 0.200 moles of iron (II) sulfate will produce = [tex]\frac{1}{1}\times 0.200=0.200mol[/tex] of FeO

The number of moles is defined as the ratio of the mass of a substance to its molar mass. The equation used is:

[tex]\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}[/tex]

We know, molar mass of [tex]FeO[/tex] = 71.84 g/mol

Putting values in above equation, we get:

[tex]\text{Mass of }FeO=(0.200mol\times 71.84g/mol)=14.37g[/tex]

Hence, the mass of [tex]FeO[/tex] required is 14.37 g

what is the oxidation state of p in po4 3

Answers

Answer:+5

Explanation: A P3X

Figure 1 (Use this figure to answer questions 6,7, and 8. Assume that the height at point
A and point C are the same)
С
B
As the car moves from point A, to point B, and finally to point C, the total energy of the car
decreases from point A to point B, then increases from point B to point
increases from point A to point B, then decreases from point B to point
O is lost between points B and C
stays the same, but is converted between potential and kinetic energy

Answers

Answer:

JWBVH

Explanation:

NWSBWHSBHS

______is composed of substance that are spread evenly among each other.

Answers

Answer:

a solute

Explanation:

the answer is a solute

What is the balanced chemical reaction when Aluminium reacts with NaOH to produce NaAlO2 and H2 gas?​

Answers

Answer:

2NaOH + 2Al +2H2O = 2NaAlO2 +3H

Explanation:

Aluminum is an amphoteric element it reacts with both bases and acids to form a salt and hydrogen gas.The reaction is highly exothermic.

Equation balancing
a. S(s) + O2(g) → SO3(g)
b. 2Al(s) + 3Cl2(g) ► 2AICI3(s)
E. 2NaOH(s) + H2SO4(ac) —Na2So (ac) + H2O(l)
d. C3H8(g) + 50(g) -3C02(g) + 4H2O(g)

Answers

Answer:

For a: The balanced equation is [tex]2S(s)+3O_2(g)\rightarrow 2SO_3(g)[/tex]

For c: The balanced equation is [tex]2NaOH(s)+H_2SO_4(aq)\rightarrow Na_2SO_4(aq)+2H_2O(l)[/tex]

Explanation:

A balanced chemical equation is one where all the individual atoms are equal on both sides of the reaction. It follows the law of conservation of mass.

For (a):

The given unbalanced equation follows:

[tex]S(s)+O_2(g)\rightarrow SO_3(g)[/tex]

To balance the equation, we must balance the atoms by adding 2 infront of both [tex]S(s)[/tex] and [tex]SO_3[/tex] and 3 in front of [tex]O_2[/tex]

For the balanced chemical equation:

[tex]2S(s)+3O_2(g)\rightarrow 2SO_3(g)[/tex]

For (b):

The given balanced equation follows:

[tex]2Al(s)+3Cl_2(g)\rightarrow 2AlCl_3(s)[/tex]

The given equation is already balanced.

For (c):

The given unbalanced equation follows:

[tex]2NaOH(s)+H_2SO_4(aq)\rightarrow Na_2SO_4(aq)+H_2O(l)[/tex]

To balance the equation, we must balance the atoms by adding 2 infront of [tex]H_2O(l)[/tex]

For the balanced chemical equation:

[tex]2NaOH(s)+H_2SO_4(aq)\rightarrow Na_2SO_4(aq)+2H_2O(l)[/tex]

For (d):

The given balanced equation follows:

[tex]C_3H_8(g)+5O_2(g)\rightarrow 3CO_2(g)+4H_2O(g)[/tex]

The given equation is already balanced.

PLEASE ANYONE HELP!!!
How does an increase in -CH2 groups in an organic chain affect the boiling point?

A. The boiling point increases as more -CH2 groups are added.
B. The boiling point increases up to 4 CH2 groups and then begins to decrease.
C. The boiling point is not affected by -CH2 groups, only by functional groups.
D. The boiling point decreases as more -CH2 groups are added.

Answers

The boiling point increases as more -CH2 groups are added

Answer:

I believe it's a.

Explanation:

Which of these is made up of smallest particles of rocks which contain decayed matter of plants and animals? A. Land B. Soil C. Mineral D. Sub-soil​

Answers

Answer:B.  as a mineral is a deposit of fine materials it would not contain decayed materials without outside assistance

Someone help me with this science question pls

Answers

Answer: Can i see the question

Explanation:

When a substance freezes or condenses, which four of the following things are true for it's particles?
(Select 4 answers)

A. Lose energy
B. Gain energy
C. Move more
D. Move less
E. Become further apart
F. Become closer together

Answers

Answer:

Gain energy, move less, become closer together

(1) The solubility of Salt AB2(s) is 5mol/dm^3. (a) Obtain an expression for the solubility product of Salt AB2,in terms of s.

Answers

Answer:

See explanation

Explanation:

Let the equation of dissolution be;

AB2(s) ⇄A(aq) + 2S

Hence;

Ksp = [A] [2s]^2

Let the concentration of the species be s

Ksp= s × (2s)^2

Ksp= 4s^3

Since s= 5mol/dm^3

Ksp = 4(5mol/dm^3)^3

Ksp = 500 mol^2dm^-6

The study of the interaction of electrical and magnetic fields, and their interaction with matter, is called _____.

electromagnetism
superconductivity
relativity
magnetism

Answers

Answer:

The study of the interaction of electrical and magnetic fields, and their interaction with matter, is called Electromagnetism

Hello Everyone ✌
hw r y'all doin
Pls answer the below questions

What is Malleability
What is ductility
What is Sonorous

Answers

Answer:

Malleability describes the property of a metal's ability to be distorted below compression. It is a physical property of metals by which they can be hammered, shaped and rolled into a very thin sheet without rupturing. A malleable fabric could be planate by blow or rolling.

Explanation:

Ductility is the property of a solid, like a metal, to deform under a tensile stress (force). So if you pull on two ends of a metal wire or bar, and it “stretches” you have a ductile substance. Though I must caution that you don't confuse the definition of ductile to mean elastic. They are not synonyms. It is the opposite of brittle. When a ductile item breaks, it is after necking, where the diameter of the wire in question reduces as the length elongated. A brittle, or non-ductile material simple tears apart in a sharp and quick fashion with little to no visible necking taking place.

sonorous: producing sound (as when struck)

Malleability describes how mallaebale the metal is

Complete and balance the equation for the single-displacement reaction. Phases are optional. balanced equation: 2NaBr+Cl2=2NaCl+Br2

Answers

Cl2 + 2NaBr >>> 2NaCl + Br2

what's is area of square that has a side of 3.4cm​

Answers

Answer:

11.56

Explanation:

Answer:
11.56cm^2

Explanation:
3.4 x 3.4 = 11.56

What is the wavelength of light with 4.01 x 10^-19 J of energy? (The speed of light in a vacuum is 3.00 x 10^8 m/s, and Planck's constant is 6.626 x 10^-34 Jos.)

A. 1820 nm
B. 496 nm
C. 202 nm
D. 551 nm

Answers

Answer:

D

hope it helps:)))!!!!!!

The concept Planck's quantum theory of radiation is used here to determine the wavelength of the light. The wavelength of the light with 4.01 x 10⁻¹⁹ J of energy is 496 nm . The correct option is B.

What is Planck's quantum theory?

According to Planck's quantum theory, different atoms and molecules can emit or absorb energy in discrete amount only. The smallest amount of energy which can be emitted or absorbed in the form of electromagnetic radiation is called quantum.

The energy of the radiation absorbed or emitted is directly proportional to the frequency of the radiation. It is given by the equation:

E = hν

ν = E / h

4.01 x 10⁻¹⁹ J / 6.626 x 10⁻³⁴ = 6.05 × 10¹⁴ Hz

We have,

ν = c / λ

λ = c / ν

3.00 x 10⁸  /  6.05 × 10¹⁴ = 4.958 × 10⁻⁷ m

1 nm = 1 × 10⁻⁹ m

4.958 × 10⁻⁷ m = 495.8 nm = 496 nm

Thus the correct option is B.

To know more about wavelength, visit;

https://brainly.com/question/30171018

#SPJ7

Other Questions
Hallar la ecuacin de la recta (2,3) y (1,-2) the ratio of fiction books to non-fictionbooks in Roxanne's library is 7 to 9.If Roxanne owns 182 fictions bookshow many non-fiction books does she A grocer noticed that customers buy both pet and baby supplies with a probability of 0.12. Considered separately, the probability that customer buys pet supplies is P(A) = 0.64, and the probability that a customer buys baby supplies is P(B) = 0.25.Move expressions and numbers into the blanks to create an equation that represents the probability that a customer buys either petsupplies or baby supplies. Help me, please :)I need to find the value of x A 4.88 x 10-6 C charge moves 265 m/sparallel (at 0) to a magnetic field of0.0579 T. What is the magnetic forceon the charge? Alejandro used a mathematical property to create two equivalent expressions.6(x + 2) = 6x + 30Which of the following is the missing term?O 24O 5x65 Iron pieces can be separated from sand using Which reaction produces an insoluble product?A2KI + Pb(NO )2 PbI, + 2KNOB2AgNO3 + Ca(CH,02)2 + Ca(NO3)2 + 2AgC,H,O,C3BaCl2 + ALLS 2AlCl3 + 3BaS.DSrBr, + Mg(OH)2 MgBr, + Sr(OH)2 A computer monitor uses 200 W of power. How much energy does it use in10 seconds? 8. The operation of a TXV is controlled by theO A. thermostatic spring.O B. temperature bulb.O C. external pressure of the evaporator.O D. modulating valve. Expected value is: Group of answer choices the average probability of all possible outcomes of a future event occurring, weighted by each possible outcome individually the sum of all probabilities of all possible outcomes of a future event occurring the sum of all possible outcomes of a future event, weighted by its probability of occurring Which expression is equivalent to log Subscript 5 Baseline (StartFraction x Over 4 EndFraction) squared? The following two-way table shows the data for the students of two different grades in a school: Member of Science Club Not Member of Science Club TotalGrade 7 20222Grade 8 20828Total 401050Based on the relative row frequency, the students of which grade are more likely to be members of the science club? answer choicesGrade 7Grade 8The students of both grades are equally likely to be members of the science clubNo conclusion can be drawn about the chances of a student being a member of the science club PLEASE HELP! Which is not a mathematical sentence?A. 8 + 7 = 15B. k+ 2 a body processing energy can do work Cash outflows can be categorized into all of the following groups except: Multiple Choice opportunity costs associated with selecting a specific capital project. outflows associated with the initial investment. working capital commitments. Directions: Read and analyze the following statements carefully. Write the word TRUE if the statement is correct andwrite the word FALSE if the statement is wrong. Write your answer in your answer sheet__1. In general, a proportion of 1 cup of sugar per cup of juice may be used for fruit juices rich in pectin.__2. Sweet fruits of low acidity require less sugar, sour fruits require more,__3. The endpoint of jelly cooking ranges from 3 degrees - 5 degrees C above the boiling point of water.__4. Fruits low in acid but rich in pectin are rare-ripe papaya and bananas.__5. The proportion of sugar to add depends upon the acidity of the juice and the amount of pectin present__6. You may increase the fruit juice's acidity by adding "calamansi", lemon juice, or commercial citric.__7. Gel formation occurs only within a narrow range of pH value of food gel formation is 2.5-3.4, the optimumpH condition is found near pH 3.0__8. A cold plate test is a way of testing the pectin content of fruits.__9. An alcohol test is not a way of testing the setting endpoint of jelly.__10. The juice is an essential ingredient in processing fruits by sugar concentration. If you answer I will mark you brainliast Exercise 6Use the x button on a calculator. You will need basic trigonometry (page 209).1. The chord AB subtends an angle of 130 at the centre O.The radius of the circle is 8 cm. Find:a) the length of ABb) the area of sector OABc) the area of triangle OABd) the area of the minor segment (shown shaded).2. Find the shaded area when:a) = 6 cm, 0 - 70b) r=14 cm, 0 = 104c) r=5 cm, 0 = 808 cm1.3. Find and hence the shaded area when:a) AB = 10 cm, r= 10 cmb) AB=8 cm, r = 5 cm4. How far is a chord of length 8 cm from the centre of a circle of radius 5 cm?5. How far is a chord of length 9 cm from the centre of a circle of radius 6 cm? 1Pretest: Unit 3Question 6 of 20What causes the national debt to increase?What causes the national debt to increase? Vernica es chilena. Ella es deO A. CanadB. ColombiaC. Costa RicaD. Chile