How many molecules are in 41.8 g H2O?

Answers

Answer 1

Answer:

7.63 × 10²³ molecules

Explanation:

First, convert grams to moles using the molar mass of water (32.988 g/mol).

41.8 g  ÷  32.988 g/mol  =  1.267 mol

Next, convert moles to molecules using Avogadro's number (6.022 × 10²³).

1.267 mol  ×  6.022 × 10²³ molecules/mol = 7.63 × 10²³ molecules


Related Questions

which statement best explains why so many fossils look different from the millions of species currently living on Earth?
A. The rock that makes up the fossils has broken down over time
B. Most species that have lived on Earth are now extinct
C. The fossil record is filled with inaccuracies
D. Organisms are becoming simpler over time through evolution

Answers

Answer:

B.

Explanation:

Most species that have lived on Earth are now extinct

<><><><><><><><><><><><><><><><><><><><><><><><>

A P E X

The statement that best explains why so many fossils look different from the millions of species currently living on Earth is: B. Most species that have lived on earth are now extinct.

What are fossils ?

The fossil record is evidence that life on Earth has changed over time, with new species evolving and old ones going extinct. It shows the wide range of life that existed throughout Earth's history, including many species that no longer exist today.

The diversity of fossils is primarily due to the extensive range of species that have lived and gone extinct throughout the history of life on Earth.

Although some fossils may have changed over time or contain inaccuracies, they are still crucial for understanding the evolutionary relationships among different species.

Hence, option B is correct.

Find more on fossils:

https://brainly.com/question/6867325

#SPJ3

If it takes 38.70 cm^3 of 1.90M NaOH to neutralize 10.30cm^3 of H2SO4 in a battery. What is the concentration of the H2SO4?

Answers

Answer:

3.57 M

Explanation:

The reaction that takes place is:

2NaOH + H₂SO₄ → Na₂SO₄ + 2H₂O

First we calculate how many NaOH moles reacted, using the given concentration and volume:

38.70 cm³ = 38.70 mL1.90 M * 38.70 mL = 73.53 mmol NaOH

Then we convert NaOH moles into H₂SO₄ moles, using the stoichiometric coefficients:

73.53 mmol NaOH * [tex]\frac{1mmolH_2SO_4}{2mmolNaOH}[/tex] = 36.765 mmol H₂SO₄

Finally we calculate the concentration of H₂SO₄:

36.765 mmol H₂SO₄ / 10.30 mL = 3.57 M

Calculate:for each object, substitute the values you know into the gravitational potential energy equation to solve for weight. Record each object's weight in the fourth column.

Answers

Answere:No sé esto jeje lo siento no soy tonta pero simplemente no sé esto

Explanation:

What is the chemical formula for Magnesium and Phosphorus as a compound?
1- Mg2 P5
2- Mg2 P3
3- Mg3 P2
4- Mg5 P3

Answers

The answer is Mg3 glad I helped

What is the definition of an alternative acid?

Answers

alternative acids are more cost-effective and allow for flavor expression through nontraditional methods and ingredients, making for increased versatility.

What is the meaning of the word neutral?

Answers

Explanation:

having no strongly marked or positive characteristics or features.

need the names for these asap please ​

Answers

Answer:

3_ethylpentane

4_ethylheptane

1_pentene

3_hexene

Please help!!! What is electrolysis?

Answers

Explanation:

plzz tell me the ans even i also want to know plzzzz someone say ans

Answer:

electrolysis is a procedure that uses direct electric current to achieve an otherwise non-spontaneous chemical reaction and is important in the separation of elements from naturally occurring

How many grams of hydrogen reacts with 32 g of oxygen to produce 34 g of hydrogen peroxide

Answers

Answer:

2 grams.

Explanation:

H2 + O2 --->  H2O2

Using molar masses:

2*1 g hydrogen   reacts with 2*16  g oxygen.

so 2g H2 reacts with 32 g O2.

Need help with the balancing one

Answers

the third option, 2,2,1,2

1CaC2 + 2O2 ---> 1Ca+2CO2
I need the mole to mole ratio.​

Answers

Ca2009 sorry if wrong

Study the chemical reaction below and answer the questions that follow: 8Al + 3Fe₃O₄ → 4Al₂O₃ + 9Fe How many moles of iron would be produced if 4.0 moles of aluminum reacts with an excess of Fe₃O₄?

A. 4.0 moles
B. 4.5 moles
C. 8.0 moles
D. 9.0 moles

Answers

Answer: the answewr is A. hope this helps!

Explanation:

What is the molar mass of H3PO4? (atomic mass: H = 1.01, P = 30.97, O = 15.99)​

Answers

Answer:

98

Explanation:

molar mass of H3PO4=(3×1)+(31)+(4×16)=3+31+64=98

Write the equilibrium expressions for each of the following equilibria:
a. 2 Ba + O2 ⇌ 2 BaO
b. 2 Mg + O2 ⇌ 2MgO
c. P4 + 5 O2 ⇌ P4O10

Answers

Answer:

a.

[tex]K=\frac{[BaO]^2}{[Ba]^2[O_2]}[/tex]

b.

[tex]K=\frac{[MgO]^2}{[Mg]^2[O_2]}[/tex]

c.

[tex]K=\frac{[P_4O_{10}]^2}{[P_4][O_2]^5}[/tex]

Explanation:

Hello!

In this case, since the equilibrium expression is set up by dividing the products over the reactants and powering to the stoichiometric coefficient, we can proceed as follows:

a. 2 Ba + O2 ⇌ 2 BaO.

[tex]K=\frac{[BaO]^2}{[Ba]^2[O_2]}[/tex]

b. 2 Mg + O2 ⇌ 2MgO

[tex]K=\frac{[MgO]^2}{[Mg]^2[O_2]}[/tex]

c. P4 + 5 O2 ⇌ P4O10

[tex]K=\frac{[P_4O_{10}]^2}{[P_4][O_2]^5}[/tex]

Best regards.

Can someone help please I will give Brainlyiest

Answers

Answer:

See Explanation

Explanation:

moles of NH₃ = 11.9g/17.03 g/mol = 0.699 mole

moles of CN₂OH₄ = 1/2(0.699) mole =0.349 mole

Theoretical yield of CN₂OH₄ = (0.349 mole)(60 g/mole) = 20.963 grams

%Yield = Actual Yield/Theoretical Yield x 100%

= 18.5g/20.963g x 100% = 88.25%

Answer:

same process as last solution I did for you except the mole ratio isn't 1:1 here it is 2:1 so you diveide the moles of NH3 by 2 to get the urea moles

here I got 88.16% yield

Explanation:

What is the pH of a solution with a (H+] = 0.80 M? *Please round your answer to the appropriate number of significant figures. Your answer can be in standard notatic "e" in place of x10.*​

Answers

Answer:

The pH of a solution with a (H+] = 0.80 M is [tex]9.6 e^{-2}[/tex]

Explanation:

As we know

pH = -[log H+]

Substituting the value of H+ ion concentration in the above equation, we get -

pH = -log [0.80]

pH [tex]= -[-0.096] = 0.096 = 9.6 e^{-2}[/tex]

What is the charge of cobalt in CoCl2?

Answers

Answer:

The oxidation number of cobalt is +2.

mi
Which two types of energy are formed by the transformation shown in the
photo?
A. Thermal energy - electrical energy
B. Chemical energy - electromagnetic energy
MC. Thermal energy -- chemical energy
D. Chemical energy - thermal energy

Answers

Answer:

A Thermal Energy and Electrical Energy

Explanation:

First it goes thermal then it transposed to electricity

Answer:

c and A

Explanation:

convert 0.881 mol N2 at STP to volume in liters ​

Answers

Answer:

19.7 L N2

Explanation:

The volume of the nitrogen gas at STP is equal to 19.72 L.

What is the ideal gas equation?

The ideal gas equation can be defined as an equation that describes the behavior of an ideal gas. This equation gives by the product of the volume and pressure is equal to the product of the moles of gas, gas constant, and absolute temperature.

The mathematical form of the ideal gas law is given as follows:

PV = nRT

Where n is the moles, V is the volume, R is the universal gas constant and P is the pressure.

The temperature of the N₂ , T =  0° C = 273 K

The pressure of the gas at STP, P = 1 atm

The value of the universal gas constant, R = 0.082 atm L/K mol

The number of moles of N₂, n = 0.881 mol

Fill in the values n, R, P, and T in the equation, and we get:

1 × V = 0.881 × 0.082 × 273

V = 19.72 L

Learn more about ideal gas equation, here:

brainly.com/question/3637553

#SPJ2

For a theoretical yield of 5.52 g and percent
yield of 51.7877%, calculate the actual vield
for a chemical reaction.
Answer in units of g.

Answers

Answer:

2.85868104g

Explanation:

Actual yield

Theoretical yield            x 100 = 51.7877%

So, do the inverse and you get 2.85868104g

2. Name each of the following ionic compounds A. K2O B. Cacl2. C. Mg3N2 D. NaCIO E. KNO3​

Answers

A. Potassium oxide
B. Calcium chloride
C. Magnesium nitride
D. Sodium hypochlorite
E. Potassium nitrate

Ionic compound K₂O is potassium superoxide. CaCl₂ is calcium chloride. The compound Mg₃N₂ is magnesium nitride and NaClO is sodium hypochlorite and KNO₃ is potassium nitrate.

What are ionic compounds?

Ionic compounds are formed between metals and non-metals. They are bonded by lose of electrons from the metal to the non-metals. An ionic compound is named starting with the cation and then the anionic part is named second with the suffix "ide" , "ate" , "ite" etc.

The compounds with the general formula M₂O are called super oxides. K₂O is called potassium superoxide or dipotassium oxide.

The compound, CaCl₂ is named as calcium chloride. The subscripts in formula  are the number of each atoms in the compounds.

Similarly Mg₃N₂ is named as magnesium nitride and KNO₃ is called potassium nitrate. The compound NaClO is named as sodium hypochlorite.

To find more on ionic compounds, refer here:

https://brainly.com/question/9167977

#SPJ5

do all energy transfers lead to a phase change

Answers

Answer: Fusion, vaporization, and sublimation are endothermic processes, whereas freezing, condensation, and deposition are exothermic processes. Changes of state are examples of phase changes, or phase transitions. All phase changes are accompanied by changes in the energy of a system

Explanation:

In an experiment, students were instructed to equally heat a sample of soil and a sample of water with heat lamps and then measure the temperature of each sample every minute for five minutes. The results are shown in the table.Which of the following predictions is BEST supported by the data?

Answers

Answer:

Explanation:

D. i had this on my science test!!!

Answer:

D

Explanation:

yup its D

How many milliliters of 0.25M H2SO4 can be prepared from 57 mL of a 3.0M solution of H2SO4?

Answers

Answer:

Why ? Because 1 molecule of H2SO4 gives 2 H+ ions per molecule while only one H+ ion is required to neutralize 1 molecule of KOH. So, 1 molecule of H2SO4 can neutralize 2 molecules of KOH. Hence, we would require 525 ml of 0.03 M H2SO4 to neutralize 525 ml of 0.06 M KOH. How will we prepare 525 ml of 0.03 M H2SO4 ?

Explanation:

Now, we have 0.025 M H2SO4 and we do not know how much volume we have.

We will use the standard N1 X V1 = N2 X V2 for this calculation.

N1=0.025 M; V1=unknown; N2=0.03 M and V2=525 ml.

So V1= (0.03 X 525)/(0.025) = 630 ml.

According to the molar concentration, 684 ml of 0.25 M H₂SO₄ can be prepared from 57 mL of a 3.0 M solution of H₂SO₄.

What is molar concentration?

Molar concentration is defined as a measure by which concentration of chemical substances present in a solution are determined. It is defined in particular reference to solute concentration in a solution . Most commonly used unit for molar concentration is moles/liter.

The molar concentration depends on change in volume of the solution which is mainly due to thermal expansion. Molar concentration is calculated by the formula, molar concentration=mass/ molar mass ×1/volume of solution in liters.

In terms of moles, it's formula is given as molar concentration= number of moles /volume of solution in liters.In case  of 2 solutions,it is calculated as, M₁V₁=M₂V₂ substitution gives V₁=3×57/0.25=684 ml.

Thus, 684 ml of 0.25 M H₂SO₄ can be prepared from 57 mL of a 3.0 M solution of H₂SO₄.

Learn more about molar concentration,here:

https://brainly.com/question/15532279

#SPJ3

why is atomic radi measured using the nuclues from 2 of the same atoms

Answers

Explanation:

Atomic radii is measured using the distance between nucleus of 2 atoms rather than the distance between the nucleus and outermost shell because:

- There is no clear/sharp boundary of the orbital. This is why it is called an electron cloud.

- Also, the exact location of the electron is not known. What is known is the probability of finding the electron there.

Due to this, it is not possible to measure the atomic radii precisely. That's why the distance between the nucleus of two atoms is used.

OMG PLEASEEEE HELPPPPPPPPPPP!!!!!!!!!!!

Answers

Answer:

the second one

Explanation:

THE answers is b

Someone please help me with this I dont know if this is correct

Answers

Answer:

Yes its correct

Explanation:

Protons + Nuetrons

Answer: Go with your gut cos

Explanation:

5
Increasing the amount of current flowing through a wire strengthens
what? *
O magnetic field
O polarity
O electromagnetism
solenoid

Answers

Answer:

Increasing the current would strengthen the

electromagnetisn

Air with less than 19.5% oxygen cannot support human life. How many moles of oxygen would the caisson if the percent of oxygen in the air dropped to 19.4%.

Answers

Are we adding the percent?

what are the chemical properties of acids​

Answers

Answer:

Acids are sour in taste. Acids react with carbonates and hydrogen carbonates to form a salt, water, and carbon dioxide gas. Extremely active metals such as Potassium (K), Calcium (Ca), Sodium (Na), etc tend to explode when combined with acids. Weak Acids like Carbonic Acid doesn't act with any metal at all.

I copied and pasted

but I hope the info helps

Other Questions
A printer can print 25 pages in a minute. Which inequality shows the number of minutes, n, the printer takes to print more than 250 pages?Group of answer choices what kind of line is y =-x?key worddnt take school seriously What is the scale factor An organism has many cells, but cannot move. It does not eat food, but cannot perform photosynthesis cither. What kingdom does it belong to? what are the solutions of this equation x^2-x-56=0 A triangular road sign has a height of 3 feet and a base of 2.5 feet. How much larger in area is this sign than one with a height of 2.5 feet and a base of 3 feet? 3. Scientists working away from the station often get their water by breaking up chunks of ice. Whatdoes this tell you about the ice in Antarctica? Which Gupta leader most contributed to the Gupta Empire's economy? What is the function of the clause "Before dinner is ready" in the sentence? It is an adverb clause modifying before. It is an adverb clause modifying set. It is an adjective clause modifying plates. It is an adjective clause modifying table. 40 BRAINLEY FFFFFFFFFFFFFFFFFFF David invested $220 in an account paying an interest rate of 1.7%compounded continuously. Assuming no deposits or withdrawals aremade, how much money, to the nearest ten dollars, would be in theaccount after 10 years? What would the answer be? write a letter to your boss for some recommendiation in the work place. Which of the following is not a major import of the United States?Medical productsTextilesElectronicsOil which of the following snakes have venom that can be fatal to humans?A.Blue racerB. Hognose snake C. both A and BD. none of the above The Athenians were known forA)their physical fitnessNOB)their strong militaryC)their vibrant art and culture12D)not writing very much Use Gauss's Law to find the electric field produced by an infinite plane of uniformly distributed charge Q, with charge density . Draw the appropriate Gaussian Surface The equation -3x + 7 = y represents the relationship between x, the time that a car drives in hours, and y, the distance the car drives in miles for car A. Identify the unit rate for this situation. Read the paragraph from Rivers and Stories, Part 1.Though the names are still magicAmazon, Congo, Mississippi, Niger, Plate, Volga, Tiber, Seine, Ganges, Mekong, Rhine, Colorado, Marne, Orinoco, Rio Grandethe rivers themselves have almost disappeared from consciousness in the modern world. Insofar as they exist in our imaginations, that existence is nostalgic. We have turned our memory of the Mississippi into a Mark Twain theme park at Disneyland. Our railroads followed the contours of the rivers and then our highways followed the contours of the rail lines. Traveling, we move as a river moves, at two removes. Our children dont know where their electricity comes from, they dont know where the water they drink comes from, and in many places on the earth the turgid backwaters of dammed rivers are inflicting on local children an epidemic of the old riverside diseases: dysentery, schistosomiasis, river blindness. Rivers and the river gods that defined our civilizations have become the sublimated symbols of everything we have done to the planet in the last two hundred years. And the rivers themselves have come to function as trace memories of what we have repressed in the name of our technical mastery. They are the ecological unconscious.Which pieces of evidence best help you to identify the authors perspective on the topic discussed in the paragraph: that rivers should be respected more?The author describes the memories of rivers as nostalgic.The author describes how railroads and highways replaced rivers.The author describes the names of rivers as magic.The author describes how children dont know what rivers are used for. Help please I give brainliest