How many moles are in 9 grams of water

Answers

Answer 1
9g x 1/18.02= 0.499 rounded is 0.50

Related Questions

the equation 2Na + Cl2 ---> 2NaCl, 2 NaCl is a:

Answers

[tex] \huge\mathrm {Answer࿐}[/tex]

[tex] \mathrm{2Na + Cl_2 \rightarrow2NaCl}[/tex]

In the above equation, the product formed is :

[tex] \large\boxed{ \mathrm{NaCl}}[/tex]

_____________________________

[tex]\mathrm{ \#TeeNForeveR}[/tex]

BRANLIEST NO EXPLANATION NEEDED.
When a cube of manganese oxide was added to a solution of hydrogen peroxide, water and oxygen were produced. Manganese oxide was not used up in the reaction. Which of the following is likely to increase the rate of the reaction? (5 points)
Reducing the mass of the cube
Using a smaller amount of solution
Smashing the cube into pieces
Chilling the hydrogen peroxide solution

Answers

Answer:

Smashing the cube into pieces

Explanation:

The reason for this is that if we were to smash the cube we would have a larger surface area which means more manganese oxide would be dissolving per second which means we would have a faster reaction rate where if we were to chill the peroxide it would dissolve slower which in turn slows the reaction. For example a spoonful of granulated sugar will react with water faster than a sugar cube.

The rate of the reaction is increased by smashing the cube into pieces. C is the correct answer.

What is the reaction rate?

The reaction rate, also known as the rate of reaction, is the rate at which a chemical reaction occurs.

It is typically classified as proportional to the change in product concentration per unit time and the change in reactant concentration per unit time. Different chemical reactions have different reaction rates.

The amount of reactants, the temperature, and the catalyst all influence the reaction rate.

When a cube of manganese oxide was added to a solution of hydrogen peroxide, water and oxygen were produced, just as in the given reaction. The reaction did not deplete manganese oxide.

The reaction will be altered by smashing the cube into pieces as the it can boost appropriate conditions for the reaction.

Thus, C is the correct answer.

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An object has an actual mass of 34.85 grams. Johnny measures the object to have a mass of 35 grams after rounding. What is Johnny's percent error of the object?

Answers

Answer:

1.15.........................

The force of gravity
1 point
a. is not related to the mass of the objects.
b. is only related to the mass of large objects.
c. is related to weight of the objects.
d. is related to the mass of the objects.

Answers

Explanation:

D No cap tell me if dis helped <3

write the conclusion of coin and feather experiment.​

Answers

Answer: In a vacuum, the objects fall at the same rate independent of their respective masses. That means coin and feather both reach ground at same time in a vacuum. Larger objects experience more air resistance than smaller objects. Also, the faster an object falls, the more air resistance it encounters.

Explanation:

Define solubilty.
_________✰✰​

Answers

Answer:

the ability for a given substance, the solute to dissolve in a solvent is solubility.

Answer:

the ability for a given substance, the solute to dissolve in a solvent is solubility.

You're provided a 0.50 M solution of HCl. How many moles of HCl are present in 25 ml of this solution? ​

Answers

Answer:

0.0125 moles of HCl

Explanation:

(0.50 mol/L)(0.025 L) = 0.0125 moles of HCl

Please help I will mark you brainiest
What are one advantage and one disadvantage of sexual reproduction?
What is one advantage and one disadvantage of asexual reproduction?

Answers

Answer:asexual- Energy is not required to find a mate. Offspring are genetic clones. A negative mutation can make asexually produced organisms susceptible to disease and can destroy large numbers of offspring. Some methods of asexual reproduction produce offspring that are close together and compete for food and space.

Explanation:During sexual reproduction the genetic material of two individuals is combined to produce genetically diverse offspring that differ from their parents.

Why do atoms become anion and cations (remember the octet rule and how 8 is a very important number)?

Answers

Answer:

The atoms become cations because they have lost electrons and the atoms and has a positive charge then atoms become a ions because they have gained electrons from cations and has a negative charge

Read the given expression.
Effective nuclear charge = atomic number - x
Which of the following explains the identity of X and its trends across a period? (5 points)
X is the screening constant, and it increases across a period.
X is the screening constant, and it remains constant across a period.
X is the number of outermost electrons, and it increases across a period.
X is the number of outermost electrons, and it remains constant across a period.

Answers

Answer:

Option 2: X is the screening constant, & it remains constant across a period.

Explanation:

I took the test and got the question correct :)

As we move across the period, X is the screening constant, and it remains constant across a period.

As we move across the period, the size of atoms become smaller because of an increase in the size of the nuclear charge. This leads to a decrease in atomic radius.

As the size of atom decreases, the screening effect on the outermost electron decreases accordingly. Hence, as we move across the period, X is the screening constant, and it remains constant across a period. This is because, no new shells are added across the period.

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The initial temperature of a reaction is 24.7 °C. The temperature decreases by 3.2 °C. What is the new temperature of the reaction? Someone help

Answers

Answer:

I think it's 21.5 *C

Explanation:

The alignment of the Sun, Earth and Moon can produce shadows on the Earth or Moon
resulting in:

very long nights

equinox

solar and lunar eclipses

longer seasons

Answers

Answer:

SOLAR AND LUNAR ECLIPSE

The tapir and agouti are ___________ found in the Amazon Rainforest.
A.Carnivores
B.Omnivores
C. Herbivores
D. Decomposers
"science"

Answers

The tapir and agouti are herbivores found in the Amazon rainforest
C

How many moles is 45g of KCl?

Answers

Answer:

60.36

Explanation:

Answer: 0,60 mol

Explanation:

Molar mass of KCl is M = (39.10 + 35.45) g/mol = 74,55 g/mol

amount of substance n = m/M = 45 g / 74.55 g/mol

What mass of silver nitrate will react with 5.85 grams of
sodium chloride to produce 14.35 grams of silver chloride
and 8.5 grams of sodium nitrate?

Answers

The answer is: 17.0 g
I hope it help!

PLEASE HELP!

See picture

Answers

Answer:

See Explanation

Explanation:

The equation of the reaction;

KHSO4(aq) + KOH(aq) -------> K2SO4(aq) + H2O(l)

Number of moles of KHSO4 = 49.6 g/136.169 g/mol = 0.36 moles

Since the reaction is in a mole ratio of 1:1, 0.36 moles of K2SO4 is produced.

Number of moles of KOH = 25.3 g/56.1056 g/mol = 0.45 moles

Since the reaction is 1:1, 0.45 moles of K2SO4 is produced

Hence K2SO4 is the limiting reactant.

Mass of K2SO4 formed = 0.36 moles of K2SO4 * 174.26 g/mol = 62.7 g

So;

1 mole of KHSO4 reacts with 1 mole of KOH

0.36 moles of KHSO4 reacts with 0.36 * 1/1 = 0.36 moles of KOH

Amount of excess KOH = 0.45 moles - 0.36 moles = 0.09 moles

Mass of excess KOH = 0.09 moles * 56.1056 g/mol  = 5 g of excess KOH

What are the materials that good conductors and insulators?​

Answers

Conductors

Silver

Gold

Copper

Aluminum

Mercury

Steel

Iron

Seawater

Concrete

Mercury

___________________

insulators

Aluminum foil

Glass

Air

Plastic

Rubber

Porcelain

Wood

I'm timed! Select the STEM-related activities performed in the fashion industry.


garment weaving

market analysis

pattern making

fabric dyeing

product promotion

product advertising

Answers

Answer:

All of them I think

Explanation:

STEM is science, technology, engineering and math, and all of them use that in some aspect

All of the above is the right answer

what is the ozone hole and how does it affect humans?

Answers

a region of marked thinning of the ozone layer in high latitudes, chiefly in winter, attributed to the chemical action of chlorofluorcarbons and other atmospheric pollutants. The resulting increase in ultraviolet light at ground level gives rise to an increased risk of skin cancer

HS0, + NaOH
Na2SO, + 2H,0 is what type of reaction?
Double replacellent
Synthesis
Decomposition
Single replacement

Answers

Answer: Synthesis

Explanation: I think is suynthesis

given a mixture of lead to oxide ammonium chloride and sodium chloride describe how a mixture can be separated to obtain a sample each​

Answers

Answer:

There are way in separating mixtures of chloride salts such as that of sodium chloride and ammonium chloride. It can be done by crystallization, filtration, and sublimation. The easiest method among the three is separation by sublimation.

HELPPPPP A pearlfish spends the day inside the alimentary tract, or intestines, of a sea cucumber. The fish emerges from the sea cucumber at night to feed on small crustaceans. The pearlfish gets a safe place to live. The sea cucumber does not gain anything from the relationship, nor is it harmed. This is similar to the relationship between which of the following organisms?
A) Fox and bunnies, and lions and zebras.

B) Tapeworms in the gut of animals, and lice on the head of humans.

C) The barnacles that attach on whales and the shuckerfish that travel together with sharks.

D) Bees and plants or sea anemonies and clownfish.

Answers

Answer:

D) Bees and plants or sea anemonies and clownfish.

i think..

Explanation:

A pearlfish spends the day inside the alimentary tract, or intestines, of a sea cucumber. The fish emerges from the sea cucumber at night to feed on small crustaceans. The pearlfish gets a safe place to live. The sea cucumber does not gain anything from the relationship, nor is it harmed. This is similar to the relationship between bees and plants or sea anemonies and clownship and the correct option is option D.

What is symbiosis?

Symbiosis is a close relationship between two species in which at least one species benefits.

For the other species, the relationship may be positive, negative, or neutral.

There are three basic types of symbiosis: mutualism, commensalism, and parasitism.

Mutualism is a symbiotic relationship in which both species benefit. Commensalism is a symbiotic relationship in which one species benefits while the other species is not affected.

One species typically uses the other for a purpose other than food. Parasitism is a symbiotic relationship in which one species (the parasite) benefits while the other species (the host) is harmed.

Therefore, a pearlfish spends the day inside the alimentary tract, or intestines, of a sea cucumber. The fish emerges from the sea cucumber at night to feed on small crustaceans. The pearlfish gets a safe place to live. The sea cucumber does not gain anything from the relationship, nor is it harmed. This is similar to the relationship between bees and plants or sea anemonies and clownship and the correct option is option D.

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Will give brainliest please help!!

Answers

Answer:

I think it's B so maybe

Help me get it right and no links

Answers

natural resources: they are materials or substances like trees and water.

What is the concentration of a solution made by dissolving 0.99mol of acetic acid in enough water to make 0.58L of solution?

Answers

Answer:

[CH₃COOH] = 1.70 M

Explanation:

When we talk about concentration we can determine Molarity

Molarity determines the moles of solute that are contained in 1L of solution.

In this case our solute is the acetic acid.

M = mol/L

M = 0.99 mol /0.58L → 1.70 M

We can also make a rule of three

In 0.58 L of solution we have 0.99 moles of solute

In 1 L of solution we may have (1 . 0.99) / 0.58 = 1.70 moles

Acetic acid is a weak acid, partially dissociated in water.

CH₃COOH  +  H₂O  ⇄  CH₃COO⁻  +  H₃O⁺     Ka

Help please !!!!!!!!!!!!

Answers

the answer to your question is a increase

HELP!!!!!What is the molar mass of a gas which has a density of .249 g/L at 20.0 degrees Celsius and a pressure of .95 atm?

Answers

Answer:

6.31g/mol

Explanation:

Using the ideal gas equation;

PV = nRT

Where;

P = pressure (atm)

V = volume (L)

n = number of moles (mol)

R = gas law constant (0.0821 Latm/molK)

T = temperature (K)

Mole (n) = mass (m)/molar mass (Mm)

* Mm = m/n

Also, density (p) = mass (m) ÷ volume (V)

PV = nRT

Since n = M/Mm

PV = M/Mm. RT

PV × Mm = m × RT

Divide both sides by V

P × Mm = m/V × RT

Since p = m/V

P × Mm = p × RT

Mm = p × RT/P

Mm = 0.249 × 0.0821 × 293/0.95

Mm = 5.989 ÷ 0.95

Mm = 6.31g/mol

Does anyone know any top brainly users that are good at chemistry?

Answers

Answer:

yes

Explanation:

Answer:

These people were ranked best at chemistry

Explanation:

please help me with this question !​

Answers

Answer: i dont understand

Explanation:

Question

What is the name of this ben zene ?

the name of this benzene is benzene circle

if you also don't understand the go in this link

https://en.m.wikipedia.org/wiki/File:Benzene_circle.svg

plz give me brainliest+ thanks i need it to reach in expert : )

hola estoy aburrido alguien para hablar

Answers

Answer:

yoooo si se puede jejeje

Explanation:

Answer:

Explanation:

hola como esta yo tan biene es  aburrido

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You are buying the new iphone 7 that originally costs $299. Verizon is running a sale that all phones are now 30% off. The sales tax is 7% in the state of New Jersey. What is the total you will pay for the ipone PLEASE HELP ME FAST I NEED HELP PLEASE Please help! And serious answers please plz helppppppppp meeeeeeeeeeeeeeee The mean (average) number of albums released by the four artists is 7 albums. Calculate the mean absolute deviation (MAD) of the data shown in the display below. if you have 30 bananas and your obese brother eats them all what do you do What do you know about other ecosystems in which predators have caused their prey to go extinct? what is the cobra effect please help its very easy for the people who know how to do this stuff!Write a word problem to match the algebraic expression n + 6. During the retreat of a glacier, pebbles and bare rock that were under the sheet are exposed to the air. What is likely the next event to occur?( dont mind the blue dot ) What is the rule you would write describing how light reflects off a mirror? which of the following events are likely to produce a warming effect on earthI. Rising carbon dioxide levels spur plant growth, causing increased carbon dioxide absorptionII. As snow and ice melt, the underlying surfaces absorb more solar radiationIII. Methane is released into the atmosphere as permafrost meltsA. I onlyB. II and III onlyC. I and II onlyD. I, II, and III What are both lincoln's gettysburg address and king's noble prize acceptance speech asking of their audiance What are three physical and 3 internal character traits of Percy Jackson I need help I am thinking about coming out to my mom because we are going to the store today and I will be in the car, I dont know if I should or not Can somebody help me? I need helpp!!! (main.c File)Counting the character occurrences in a fileFor this task you are asked to write a program that will open a file called story.txtand count the number of occurrences of each letter from the alphabet in this file.At the end your program will output the following report:Number of occurrences for the alphabets:a was used times.b was used times.c was used times. and so, onAssume the file contains only lower-case letters and for simplicity just a singleparagraph. Your program should keep a counter associated with each letter of thealphabet (26 counters) [Hint: Use array] Your program should also print a histogram of characters count by addinga new function print Histogram (int counters []). This function receives thecounters from the previous task and instead of printing the number of times eachcharacter was used, prints a histogram of the counters. An example histogram forthree letters is shown below) [Hint: Use the extended asci character 254] The Power of Sports to Change the WorldSports are generally seen as a form of entertainment. However, there are many examples of how sports can break down barriers like racism. Your driving question for this project is: How can sports be an agent of social and/or political change?In a May 2000 speech Nelson Mandela (former president of South Africa) stated, "Sport has the power to change the world. It has the power to inspire, it has the power to unite people in a way that little else does. It speaks to youth in a language they understand. Sport can create hope, where once there was only despair. It is more powerful than governments in breaking down racial barriers. It laughs in the face of all types of discrimination."The goal of the project is to research an instance of sports helping to change the world for the better, then create some type of presentation that illustrates the story that you have researched and the impact it has had in the short- and long-term. Your presentation can be a poster or some type of tabletop display. It can also be a PowerPoint, Prezi, or other type of multimedia presentation. ExamplesHere are some examples of how sports has been an agent of change in the world.South African rugby team that helped bridge the apartheid division between blacks and whites - depicted in the movie Invictus. This is probably my favorite story about how sports can have an impact on the world.Texas Western basketball team that started 5 African-Americans in the national championship game vs. Kentucky - depicted in the movie Glory Road.Special OlympicsHEROS HockeyIn Zanzibar, soccer is opening up opportunities for girls.Coaches Across ContinentsYou will not have to look to hard to find examples of how sports have helped to change a community or a country. It happens every day in places around the world. This is more than just an "Inspired by Sports" assignment. It shouldn't be a story about an individual unless you can somehow show how that individual's experience has helped to change the world around him/her. Ann works in a supermarket for $10.00 per hour. If her pay is increased to $12.00, then what is her percent increase in pay? Show your work. Solve: 5x2 + 25x = 0. (2 points)