Chandra wants to know how many moles are contained in 150. 0 g CCl4 (carbon tetrachloride). What quantity of CCl4 should she use to make this conversion? number of moles molecular mass molar mass mole ratio.

Answers

Answer 1

Answer:

Molar mass

Explanation:

The molar mass is the number of grams by which there's exactly one mole of one specific substance. So what you do is divide the grams by the molar mass to obtain the number of moles :).

Answer 2

Answer:

Yep Moler mass is the answer

Explanation:


Related Questions

(b) at 400k both compounds are gases. at this temperature, which compound, ch4(g) or ccl4(g), behaves more like an ideal gas? justify your answer, including reasoning about both molecules.

Answers

CH4 has more ideal gas behavior than CCl4 due to its higher intermolecular interaction.

We must note that ideal gases have minimal interaction with each other. Hence, in deciding which gas has ideal gas behavior, we have to consider the gas that has the least degree of intermolecular interaction.

However, the both gases contain nonpolar molecules but CCl4 has a greater molecular mass and has more intermolecular interaction than CH4 hence CH4 has greater ideal gas behavior than CCl4.

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What are the most of the elements in the periodic table

Answers

Answer:

Most of the elements in the periodic table are metals.

Hope that helps. x

Answer:

Here is your answer,mate!

Explanation:

Metals are the most of the elements in the periodic table.

chemical reaction occurs when the chemical identity of the reactants is different from that of the products. A new substance forms with different properties from the original react
Evidence that a chemical reaction has occurred can be a color change, light formation, gas bubbles formation, precipitate formation, or temperature change,
Use the following information to answer question 1.
QUESTION 1
Instant cold packs consist of ammonium nitrate and water. When the two are mixed, the temperature changes and becomes colder. It is described using the chemical equation
NH4NO3(s) → NH4+ (aq) + NO3(aq)
LA
Is this an example of an endothermic or exothermic reaction? Why?

Answers

Answer:

Explanation:

Exothermic: the surrounds feel warmer. A wood fire stove is a good example of an exothermic reaction. You can feel the heat on your hands. It's exothermic.

Endothermic is exactly the opposite. The reaction takes place, but the heat comes from the surroundings. When you touch something that goes through an endothermic reaction, it feels much cooler.

This reaction, just by definition is endothermic.

I know the answer is A/1 but I’m not sure how to explain it, I would like some help on the explanation part

3. The accompanying diagram represents a cell in water. Formulas of molecules that can move freely across the cell membrane are shown. Some molecules are located inside the cell and others are in the water outside the cell.



(Picture) diagram



Based on the distribution of these molecules, what would most likely happen after a period of time?

A. The concentration of O₂ will increase inside the cell.

B. The concentration of CO₂ will remain the same inside the cell.

C. The concentration of O₂ will remain the same outside the cell.

D. The concentration of CO₂ will decrease outside the cell.

Answers

Answer:

number one is the correct option

When potential energy is converted into kinetic energy, some of that energy is always in the form of:
А.
light energy
B.
chemical energy
с
nuclear energy
D
heat energy

Answers

Hello good evening, friends, I want to ask a question of Lyophilized Medication medicines are considered reconstituted medications.

9. Name the element which has the following numbers of particles:
I

Answers

A. iron

B. iodine

C. Helium

D. calcium

E. lead

F. hydrogen

check your periodic table to see if they are correct

atomic number, proton number and electron are the same

to find neutron = mass number - atomic number

2. The two naturally occurring isotopes of hydrogen are hydrogen-1 ( 1.00783 amu; 99.9885 percent) and hydrogen-2 (2.01410 amu; 0.0115 percent). What is the average atomic mass of hydrogen?

A. 1.0079 amu
b. 1.0097 amu
c. 1.0309 amu
D. 1.5110 amu

Answers

The answer for your question is D

Answer:

1.0079 g/mol

Explanation:

99.989% / 100% = 0.99989 hydrigen-1 , 0.0115% / 100% = 0.000115 hydrogen-2

0.99989 x 1.0078 = 1.0077 ,  0.000115 x 2.0141= 0.000232

1.0077 + 0.00023

Answer: 1.0079

hydrofluoric acid
What’s the formula

Answers

Hydrofluoric acid/Formula

______________________

HF

______________________

o0o0o0o0o0o0o0o0o0o0o0

The molar mass of water (H2O) is 18. 0 g/mol. A sample of water has a mass of 18. 0 g. How many moles of water are contained in this sample? 1. 00 18. 0 36. 0 324.

Answers

1 mole of water is contained in a sample of water that has a mass of 18.0 g.

HOW TO CALCULATE NUMBER OF MOLES:

The number of moles of a substance can be calculated by dividing the mass of that substance by its molar mass.

no. of moles = mass ÷ molar mass

According to this question, a sample of water has a mass of 18.0g. The number of moles is calculated as follows:

no. of moles of H2O = 18.0g ÷ 18g/mol

no. of moles of H2O = 1mol

Therefore, 1 mole of water is contained in a sample of water that has a mass of 18.0 g.

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. A sample of ammonium phosphate can be prepared by the reaction of aqueous ammonia and phosphoric acid. 3NH3 (aq) + H3PO4 (aq) (NH4),PO4 (aq) 25.0cm of 1.25 mol/dm phosphoric acid is neutralised by 45.3cm of aqueou ammonia (a) Calculate the concentration in mol/dm3 of the ammonia used.​

Answers

The concentration in mol/dm³ of the ammonia used is 2.07 mol/dm³

Balanced equation

3NH₃ (aq) + H₃PO₄ (aq) -> (NH₄)₃PO₄ (aq)

From the balanced equation above,

The mole ratio of the acid, H₃PO₄ (nA) = 1The mole ratio of the base, NH₃ (nB) = 3

How to determine the molarity of NH₃ Volume of acid, H₃PO₄ (Va) = 25 cm³Molarity of acid, H₃PO₄ (Ma) = 1.25 mol/dm³Volume of base, NH₃ (Vb) = 45.3 cm³ Molarity of base, NH₃ (Mb) = ?

MaVa / MbVb = nA / nB

(1.25 × 25) / (Mb × 45.3) = 1 / 3

31.25 / (Mb × 45.3) = 1 / 3

Cross multiply

Mb × 45.3 = 31.25 × 3

Divide both side by 45.3

Mb = (31.25 × 3) / 45.3

Mb = 2.07 mol/dm³

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True or False? The energy carried by a sound
wave is blocked by collisition
between the particles in the
material the name is traveling
in

Answers

Answer:

true

Explanation:

i checked on moogle

True Is the answer ..scientific proved .

P 1. Elements X and Y react to form an ionic compound a formula XY. What could be the proton (atomic) numbers of X and Y?
X | Y
A | 3 | 8
B | 6 | 8
C | 8 | 16
D | 12 | 16​

Answers

Answer:

the answer is C

Explanation:

This is because group6 elements are diatomic and when they are chemically combined their subscript 2 cancels out

Suppose you have samples of three unknown solids. Explain how you could use their properties to determine whether or not they are ionic solids.

Answers

Given a sample of three unknown solids, we would be able to deduce which are ionic solids by their melting and boiling points, conductivity in water, and the insulation they provide.

What are Ionic solids?An ionic solid is a solid formed by ionic bonds. They are the solid version of ionic compounds, which are held together by strong electrostatic energies.

What properties do they possess?Among their many properties, ionic solids possess high melting and boiling points.These solids are also known to conduct electricity well when dissolved into water, however, this can be tested after melting them as they will not conduct electricity in a solid state.A final property that we can use to identify them is that they provide a good means of insulation.Each of these properties can be tested and will allow us to determine the ionic solids amongst the samples.

Therefore, we can find the ionic solids amongst the samples by testing their melting and boiling points, conductivity in water, and the insulation they provide, given that each of these should provide high values to indicate an ionic solid.

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Pls Help Me (20 Points)
In one to two sentences, explain how to compare the strength of electrostatic forces between molecules in salt water to the strength of electrostatic forces between molecules in freshwater. Include a description of the data to be collected and how that data would allow one to draw conclusions about the relative strengths of the electrostatic forces in the two substances.

Answers

Answer:

-Salts are composed of ions that form a tightly packed and ordered network, which is called a crystal lattice, and it is held together by ionic bonds.

Explanation: salts are ionic compounds, which are composed by oppositely charged ions (cations and anions) which are bonded each other by ionic bonds, in an ordered arrangement, often a crystalline solid.

-When a salt is added to a polar solvent like water, the ions interact with the solvent molecules via ion-dipole forces, which overcome the forces originally holding the ions together.

Explanation: the molecules of a polar solvent are dipoles because they have dipolar momentum (a difference in charge due to a electronegativiy difference). When a salt is dissolved in a polar solvent, it dissociates in ions. So, the resulting interactions between these species are ion-dipole forces.

-The ions are then isolated and stabilized in solution via these interactions, and when this occurs for most of the salt compound, it is considered soluble in that solvent.

Explanation: the ions in solution are surrounded by solvent molecules which stabilizes them. A salt which is enterely dissolved in a solvent is soluble in that solvent.

-Due to the nature of the interaction between ions and solvent molecules, a concentration of ions can be dissolved higher in water than in alcohol.

Explanation: water molecules have unique properties that make water an universal solvent. Due to these properties and its polarity, water can dissolve larger quantities of salt than other polar solvents such as alcohol.

The electrostatic force in water without salt  is stronger as compared to the  water due to the presence of free electrons.

In water hydrogen bonding is present that is the only kind of  electrostatic force present in the water. In water containing salt sodium and chloride ions are present which conduct strong electrostatic force. A static meter is ideal for measuring the  of liquids. It measures the charge on the liquid. Hence, the electrostatic force in salt water is stronger as compared to the  water due to the presence of free electrons.

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In an investigation that uses the scientific method, which step immediately follows making a hypothesis?
summarizing the results
asking a question
making observations
designing an experiment

C????

Answers

Answer:

The answer is designing an experiment

Explanation:

Since we already have a hypothesis, we need to test the hypothesis and this is done by designing an experiment that will do this test.

why are earthquakes different in New Madrid than in California.

Answers

Well it depends how close the places are to the edges of tectonic plates. Also the damage caused from the Earthquakes has to do with how sturdy the buildings are and whether they were built to withhold such strong forces.

cellus
A student measures the acidity of a solution and
concludes that it has a pH of 2.70. However, the
seller claims that its pH is 3.20. What is the
percent error in the student's measurement?

Answers

Answer:

15.63%

Explanation:

The formula of error percentage is:

([experimental value-real value]/real value)100%

You divide the subtraction of the absolute value of experimental value (the one you got during a experiment) and the one that's "proven" to be right by again, the proven value. You got a decimal and all you have to do is multiply it by 100%

Answer:

on acellus the answer is 16%

I hate acellus

Explanation:

help i cant do this i need this ASAP

Answers

Answer:

you draw the line first to the light bulb and then you connect it to the battery then you connect it to microscope

Explanation:

hope this helped pls mark it brainlest pls and thank you:)

True or False: A food chain is the feeding relationships among all the organisms in an
ecosystem.

Answers

Answer:

False.

Explanation:

A food web is the feeding relationships among all the organisms in an

ecosystem.

.・。.・゜✭・have a nice day・✫・゜・。.

The answer is false bro

Write the shape of s and p-orbials.

Answers

s-orbitals are spherical, while p-orbitals are similar to a 3-D infinity symbol. I have attached an image of the comparison.

Large networks of ators covalently bonded together are called:
a) Giant covalent structures
b) Molecular structures
c) Giant ionic lattices
d) Superconductors

Answers

Answer:

Giant Covalent Structures, Diamond and Graphite are giant covalent structures since they're allotropes of Carbon.

Answer:

Giant covalent structures contain very many atoms. , each joined to adjacent atoms by covalent bonds. The atoms are usually arranged into giant regular lattices - extremely strong structures because of the many bonds involved.

Can anyone help me? I will try to give brainliest.

Answers

Answer:

Looking at the table, Silver is definitely the most conductible metal there. It has the lowest electrical resistivity which means it allows for an easier flow of electrons, and it also has a higher thermal conductivity which means it would exhibit a higher conductivity. Diamond has the highest thermal conductivity, but the electrical resistivity is extremely high and due to its giant covalent/tetrahedral molecular structure (being an allotrope of Carbon), electrons can't necessarily jump around. Diamond wouldn't be a conductor at all.

The most simplest composition and structures provide a higher thermal conductivity. For example, with Diamond, we know that it is a structure made of covalent bonds of carbon, so its thermal conductivity is high.

Answer:

Q1

Copper

Explanation:

Copper is a good conductor of electricity, its resistance is high, and its chemical activity is weak

Q2

The thermal conductivity of a specific material is highly dependent on a number of factors. These include the temperature gradient, the properties of the material, and the path length that the heat follows.

Which of the following elements are most likely to form an ionic bond
K and Ca

S and Cl

K and Cl

C and O

Answers

Answer:

K (Potassium) and Cl (Chlorine)

Explanation:

Ionic bonds are formed with metals and nonmetals

Covalent bonds are formed only with nonmetals

Calcium and potassium are both metals

Sulfur and Chlorine are both nonmetals so they don't form ionic bonds

Carbon and Oxygen are both nonmetals so they don't form ionic bonds

How does the weather caused by a warm front compare to the weather caused by a cold front?

A: A warm front brings fog, but a cold front brings clouds that form from dry air.
B: A warm front brings rapid changes in weather, but a cold front brings slow changes in weather.
C: A warm front brings widespread cloud cover, but a cold front brings intense sun coverage.
D: A warm front brings rain in humid air on occasion, but a cold front brings thunderstorms in summer.

Answers

Answer:

The weather caused by a warm from and a cold front compare by:

D. A warm front brings rain in humid air on occasion, but a cold front brings thunderstorms in summer.

A warm front is a phenomenon in which a warm air mass replaces a cold air mass, creating fog and rain on one occasion. While the cold front is the replacement of a warm air mass by a cold air mass changing the pressure and creating a thunderstorm in the middle of summer. The warm front happens in zones close to the equator and the cold fronts happen in almost every place.

Hope that helps. x

how would you expect the solubility of barium sulfate in pure water to compare to its solubility in 0.10 m nacl

Answers

Answer:

barium sulfate is insoluble (unable to dissolve) in water.

the general equation for the reaction between solid barium sulfate and nacl solution is this:

BaSO4 (s) + 2NaCl (aq) --> BaCl (aq) + Na2SO4 (aq)

to sum this up, to compare the solubility,

1. barium sulfate cant dissolve in pure water.

2. barium sulfate dissolves in nacl solution to give aqueous (aq) barium chloride (bacl) and aqueous sodium sulfate (na2so4), as shown in the equation above.

good luck!

The solubility of barium sulfate in pure water to zero as compare to the solubility in NaCl solution.

What is solubility?

Solubility is a property of any substance that defines how easily can be any substance will get dissolved or show dissolution.

Barium sulphate is insoluble in water beacuse it has higher lattice energy as well as higher size of cations & anions as compare to water, due to which water is not able to attract these ions towards itself affectively.Barium sulphate is soluble in the NaCl solution as this solution having ions which have more power to attract the ions of barium sulphate and show dissolution. Chemical reaction for this will be represented as:

         BaSO₄ (s) + 2NaCl (aq) → BaCl (aq) + Na₂SO₄ (aq)

Hence, barium sulphate is insoluble in water.

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Which statement best defines kinetic energy? A. kinetic energy is highest at the highest point of structure or model.
B. kinetic energy is stored in a battery.
C. kinetic energy is energy that is stored up. D. kinetic energy is the energy of motion. help me pls!!​

Answers

Answer:

The answer is D. Kinetic energy is the energy of motion.

Pls mark brainliest. Hope this helped. :D

the answer is d because potential energy is the energy that is stored

When heat is being transferred away from a substance, the resulting phase change graph is known as a ____ curve.

a. Cooling

B. Heating ​

Answers

collinf is answerrrrrr

What is the significance of cell division?
A. to make ATP
B. to prevent replication
C. to repair and replace other cells
D. to make glucose

Answers

The answer is c) to repair and replace other cells.

Cell division is the replication of cells by dividing itself into two, it does not prevent replication. Cell division does not make glucose either and cell division does not make ATP.

What is the final concentration (M) of a solution prepared by diluting 50.0 mL of a solution to a volume of

Answers

0.600
D) 0.600 is the final concentration of the solution of KCl.
V1 = 50.0 mL.

If 48.3g of iron is completely rusted in oxygen to produce 62.5g of iron (III) oxide, how many grams of oxygen are involved in the reaction?

Answers

The amount of oxygen involved in the reaction would be 20.7 g

The equation of rusting of iron is as follows:

[tex]4Fe + 3O_2 ---> 2Fe_2O_3[/tex]

The mole ratio of Fe to O2 is 4:3.

Mole of 48.3 g Fe = mass/molar mass

                               = 48.3/56

                                = 0.8625 moles

Equivalent mole of O2 = 0.8625 x 3/4

                                       = 0.6469 moles

Mass of 0.6469 moles O2 = mole x molar mass

                                             = 0.6469 x 32

                                              = 20.7 g

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