Samantha opened a tin of white paint. The paint consisted of a liquid and particles of titanium dioxide that are insoluble in the liquid.The paint had separated into two layers What type of substance in the titanium dioxide

Answers

Answer 1

Titanium dioxide is a type of mixture if particles of titanium dioxide are insoluble in the liquid.

What is a mixture?

A mixture is composed of one or more pure substances in varying compositions.

A mixture is a material made up of two or more components joined together, but not chemically combined. In a mixture, a chemical reaction does not occur and each of its components maintains its identity and chemical properties.

A compound is a substance formed by the chemical combination of two or more different elements from the periodic table. The elements of a compound cannot be divided or separated by physical processes. They are not mixtures or alloys

An element is a type of matter made up of atoms of the same class.  It is an atom with unique physical characteristics, a substance that cannot be decomposed by a chemical reaction.

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Related Questions

Which shows a monosaccharide?

Answers

Monosaccharides are the group of carbohydrates that are the simplest form of sugar. Option A galactose is a monosaccharide sugar.

What are monosachharides?

Monosaccharides are simple sugars and are the fundamental unit of carbohydrates.

The general structural formula for the monosaccharides is (CH₂O)ₙ

The structure of the monosaccharide sugar contains carbon, oxygen, and hydrogen molecules in their structure.

Galactose that is a simple sugar with six carbon atom rings Hence,  option A is a correct option

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which type of scientist would most likely study how the size of the lemming population affects the size of the snowy owl population?
A. A biologist
B. A sociologist
C. A chemist
D. A physicist
HELP PLS

Answers

The type of scientist would most likely study how the size of the lemming population affects the size of the snowy owl population is a biologist.Thus, the correct option is (D)

What Biologist does ?

Biologists study humans, plants, animals, and the environments in which they live.

They may conduct their studies--human medical research, plant research, animal research, environmental system research--at the cellular level or the ecosystem level or anywhere in between.

Hence, The type of scientist would most likely study how the size of the lemming population affects the size of the snowy owl population is a biologist.Thus, the correct option is (D)

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If 1.32 g MgO is combined with 100.0 mL of 1.00 M HCl in a coffee cup calorimeter, the temperature of the HCl solution increases from 24.2 °C to 34.4 °C. Calculate the enthalpy change for the reaction per mole of MgO. Assume that the specific heat of the HCl solution is 4.18 J/g·°C and its density is 1.00 g/mL.

MgO(s) + 2HCl (aq) MgCl2 (aq) + H2O (l)

Answers

The change in enthalpy for the reaction per mole is -130KJ/mol.

Given,

Reaction: MgO(s) + 2HCl (aq) →MgCl₂ (aq) + H₂O (l)

1.32 g MgO is combined with 100.0 mL of 1.00 M HCl in the cup of coffee.

Change in temperature, ΔT=34.4 °C-24.2 °C =10.2°C

Specific heat of the HCl solution, c= 4.18 J/g·°C

Density= 1.00 g/mL

Mass can be written as the product of density and volume.

Mass= Density × Volume= 1g/ml × 100 ml=100g

Heat can be written as

Heat, Q=mcΔT=100g×4.18 J/g·°C×10.2°C=4263.6J

Number of moles of the MgO,

n= (mass of MgO)/(Molar mass)= 1.32g/(40.3g/mol)= 0.03275 mol

Change in Enthalpy, ΔH=-Q/(n)=(-4263.6J)/(0.03275 mol)

ΔH= -1300186J/mol= -130KJ/mol

Hence, the change in enthalpy for the reaction per mole is -130KJ/mol.

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heating up a reaction increases the speed of a reaction until the ____

Answers

Heating up a reaction increases the speed of a reaction until the enzyme denatures.

What is enzyme denaturation?

Enzyme denaturation occurs when a biological protein catalyst does not work anymore due to a high temperature that alters its tridimensional conformation.

This cellular process (denaturation) is well known to be one of the main causes of enzymatic failure.

In conclusion, heating up a reaction increases the speed of a reaction until the enzyme denatures.

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Two samples contain sulfur and
oxygen in the amounts shown in the
data table. What is the mass percent
of sulfur in compound B?
Sample Mass S (g) Mass 0 (g)
A
32.0
48.0
B
30.0
30.0

Answers

Answer:

Sample A=40 Sample B=50

Explanation:

32+48=80

32/80x100=40

The 100 is to convert it to a percentage

___________________________

Sample B

same thing

30+30=60

30/60x100=50

The mass percent of sulfur in compound B is 50 %

What is mass percent?

Mass percent is defined as a way of expressing a concentration or describing the component in a particular mixture.

It can also be defined as a mass of a element or solute divided by the mass of compound or solvent.  

Mass percent of sulfur of sample A

= 32 + 48 = 80

= 32 / 80 x 100

= 40 %

Mass percent of sulfur of sample B

= 30 + 30 = 60

= 30 / 60 X 100

= 50 %

Thus, the mass percent of sulfur in compound B is 50 %

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Which feature of a balanced chemical equation demonstrates the law of
conservation of mass?
A. It shows the products of a chemical reaction to the right of the
reaction arrow.
OB. It shows the reactants of a chemical reaction to the left of the
reaction arrow.
C. It has the same types of atoms on both sides of the reaction
arrow.
O
D. It has coefficients to show how much of each substance a
chemical reaction uses.

Answers

Answer:

C. It has the same types of atoms on both sides of the reaction arrow.

What is a chemical equation?

A chemical equation is a symbolic representation of a chemical reaction; Reactants are represented on the left and the products on the right.

The law of conservation of mass states that in a closed system, mass is neither created nor destroyed during a chemical or physical reaction. The law of conservation of mass is applied whenever you balance a chemical equation. It is also applicable to stoichiometry. A balanced equation demonstrates the conservation of mass by having the same number of each type of atom on both sides of the arrow.

Consider the balanced equation for the combustion of methane.

[tex]CH_4 + 20_2 \implies CO_2 + 2H_2O[/tex]

All balanced chemical equations must have the same number of each type of atom on both sides of the arrow.

In this equation, we have 1 C atom, 4 H atoms, and 4 O atoms on each side of the arrow.

The number of atoms does not change, so the total mass of all the atoms is the same before and after the reaction. Mass is conserved.

The same atoms of the same element that are present in the reactants are also present in the products, according to the rule of conservation of matter.

This leads us to believe that the response to the question is true because: It has the same atom kinds on both sides of the reaction arrow (Option C)

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How many liters of a 0.80 M
solution can be made with 2.0 mol
KNO3?
{?} L

Answers

Answer:

Explanation:

Solution

Verified by Toppr

2 molL

−1

Explanation :

Concentration =

Volume of solution

Moles of solute

We assume that potassium nitrate dissolves in the given volume of solvent without gross change in volume.

Concentration =

101.10gmol

−1

404g

What does the author predict about the future of the Earth's mantle? Do you support his educated guess? Use complete sentences to answer.

Answers

The earth's mantle will not change in the future because this region is safe from the intervention of human beings.

What happens in the Earth's mantle?

The transfer of heat and material in the mantle helps us to determine the landscape of Earth. Activity in the mantle moves the plate tectonics, that contributes to volcanoes, seafloor spreading, earthquakes, and building of mountains.

So we can conclude that the earth's mantle will not change in the future because this region is safe from the intervention of human beings.

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What mass of sodium chloride (nacl) forms when 7.5 g of sodium carbonate (na2co3) reacts with a dilute solution of hydrochloric acid (hcl)? type in your answer using the correct number of significant figures. na2co3 2 hcl → 2nacl h2o co2 7.5 g na2co3 = g nacl

Answers

Answer:

8.3 g of NaCl

Explanation:

Edge 2022

Answer:

8.3 g NaCl

Explanation:

Its right just type it in

Describe the properties of noble gases. based on their electronic arrangement, explain whether they can exist alone in nature.

Answers

Noble gases exist as monatomic gases, which means that their molecules consist of a single atom.

What are noble gases?

A "Noble gas" can be defined as a gas which does not undergo chemical reactions. Examples of Noble gases are helium, Neon, Argon, Krypton, Xenon, and Radon.

Properties of noble gases:

Noble gases are the least reactive of all elements because they have eight valence electrons, which fill their outer energy level. That's why noble gases rarely react with other elements and form compounds.

Atoms of noble gases do not bond with other gases. Only helium exists as atoms of Helium, not as diatomic molecules. Helium does not form compounds with atoms of other elements.

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would mean alot to help

Answers

Answer:

n

Explanation:

nobody knows

Answer: O

Explanation:

Out of the given elements, oxygen has the highest electronegativity.

What causes ionic bonding between two atoms?

Answers

Answer:

Ionic bonding happens when an atom of an element gives one or more of its electrons to the other element's atom..it usually takes place between metal and non metal atoms...like in NaCl, Na gives its valence electron to chlorine and completes its own octet. Chlorine accepts the electron and completes its own octet too...but now both the atoms have an opposing charge and hence they attract each other to form an IONIC bond.

Ionic bonds are the strongest of the bonds...here complete transfer of electrons takes place unlike covalent bonds.

HOPE IT HELPED..

:)

Answer:

The electrostatic interaction between an anion and cation

Which of the following choices is NOT a consequence of incomplete combustion?
A. Carbon monoxide blocking oxygen in the blood.
B. Heavy metals leaking into groundwater and damaging the nervous system.
C. Carbon particles causing breathing problems.
D. Carbon particles making buildings dirty.

Answers

Carbon monoxide blocks oxygen in the blood. Hence, option A is correct.

What is combustion?

Combustion is a chemical process or a reaction between Fuel (Hydrocarbon) and Oxygen.

During incomplete combustion part of the carbon is not completely oxidized producing carbon monoxide (CO). Incomplete combustion uses fuel inefficiently and carbon monoxide is released.

Carbon monoxide gas diffuses rapidly across the pulmonary capillary membrane, binding to haemoglobin with an affinity 200 times that of oxygen to form carboxyhemoglobin. By displacing oxygen, CO decreases the oxygen-carrying capacity and oxygen delivery to tissues, causing marked cellular hypoxia and acidosis.

Hence, option A is correct.

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An element has two naturally-occurring isotopes. The mass numbers of these isotopes are 115.00 u and 117.00 u, with natural abundances of 25% and 75%, respectively. Calculate its average atomic mass. Report your answer to 2 decimal places.

Answers

[tex](115.00)(0.25)+(117.00)(0.75)=\boxed{116.50 \text{ u}}[/tex]

From 200 mg of CO₂, 1021 molecules are removed. How many molecules of CO₂ are left?​

Answers

Answer:

CO_(2)` molecules removed `= 10^(21)` <br> No. of `CO_(2)` molecules left `= 2.74 xx 10^(21) - 10^(21) = 1.74 xx10^(21)` <br>

Explanation:

How many moles of NO2 form when
63.25 g N2O5 decompose?
2N2O5→ 4NO2 + 0₂

Answers

Answer:

1.1713 moles

Explanation:

RFM of N2O5= (14*2)+(16*4)=108

Moles of N2O5= Mass/RFM= 63.25/108= 0.5856 moles

Mole ratio of N2O5:NO2 = 2:4

Therefore moles of NO2= 4/2*0.5856= 1.1713 moles

How are a mole and a dozen similar?

Answers

Mole and dozen are similar to each other because of the presence of number 12 in both measurements.

How are a mole and a dozen similar?

The sample of 12 grams of carbon is equal to its one mole and we know that in one dozen, there are 12 numbers. Therefore, we considered mole similar to a dozen.

So we can conclude that Mole and dozen are similar to each other because of the presence of number 12 in both measurements.

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How many grams of carbon are contained in one mole of[tex]C_{3}H_{8}[/tex] ?

Answers

[tex]\quad \huge \quad \quad \boxed{ \tt \:Answer }[/tex]

[tex]\qquad \tt \rightarrow \:36 \:\: g [/tex]

____________________________________

[tex] \large \tt Explanation \: : [/tex]

The given compound has 3 carbon atoms, so in 1 mole of that compound, there will be 3 moles of carbon atoms.

Mass of each mole of carbon atoms = 12 g

For 3 mole carbon atoms, it will be 12 × 3 = 36 grams

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The temperature of a thermometer
increases during a chemical reaction.What happens to the energy of the reaction (system)?
A. The reaction releases energy (- or exothermic).
B. The reaction absorbs energy (+ or endothermic).
C. The reaction does not cause an energy change.

Answers

Answer:

B. the reaction absorbs energy (+ or endothermiic)

All of the following are physical properties except a. density b. colour c. reaction with oxygen d. melting point

Answers

C! That’s a chemical change :)

Answer:

C

Explanation:

a, b and d   are physical properties ..... the compound or element in question has not changed its identity

   c    when combined with oxygen, it has changed to a different compound via CHEMICAL property.

In a process called photosynthesis, plants use carbon dioxide and water, along with energy from sunlight, to produce sugar and oxygen. photosynthesis is represented by the equation what must a plant need to produce 4 molecules of sugar? 6 molecules of co2 6 molecules of h2o 18 molecules of co2 24 molecules of h2o

Answers

24 molecules of H2O are needed by the plant to produce 4 molecules of sugar.

What is photosynthesis?

The process by which plants convert carbon dioxide, water, and sunlight into oxygen and sugar-based energy is known as photosynthesis.

The photosynthesis equation is as follows:

                   6CO2 + 6H2O + Sunlight → C6H12O6 + 6O2

The following three significant activities are involved in photosynthesis:

1. Chlorophyll absorbs light energy.

2. Water molecules are divided into hydrogen and oxygen and light energy is converted to chemical energy.

3. Carbon dioxide is converted to sugars.

         

Therefore, a plant needs four molecules of H2O and four molecules of CO2 to make one molecule of glucose or sugar, hence a plant needs 24 molecules of H2O and 24 molecules of CO2 to make four molecules of sugar.

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Answer:

D) 24 molecules of H2O

Explanation:

Just did the test on Edge 2023 and got it right. Have a nice day :)

10.5 mL of an unknown solution are diluted to 80.0 mL. The concentration of the
new solution was determined to be 0.172 M. What was the molarity of the
unknown solution? (Report your answer to two places past the decimal point.
Moodle is looking for a number only, no units.)

Answers

The molarity of the unknown solution will be 1.310 M.It is denoted by M₂.

What is molarity?

Molarity is defined as the ratio of the moles to the volume of the solution.

Given data;

Volume of unknown solution,V₁ = 10.5 mL

The volume of diluted solution,V₂ = 80.0 mL

Molarity of new solution,M₁ = 0.172 M

Molarity of unknown solution, M₂=?

For dilution we use the formula as;

M₁V₁=M₂V₂

M₂=M₂V₂/V₁

M₂ = ( 80 × 0.172 ) / 10.5

M₂= 1.310 M

Hence the molarity of the unknown solution will be 1.310 M.

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The scientists who have contributed to our current body of knowledge were
from what part of the world?

A. All areas of the world

B. Mostly Europe

C. Mostly the Middle East

D. Only the United States
SEMIT

Answers

Answer:

A.

Explanation:

Well, Nicola Tesla was from Croatia.

Albert Einstein was from Germany.

Thomas Edison was from the U.S.

So I think all over.

All areas of the world (A)

It requires 2,500 joules to raise a certain amount of water (c = 4.186 j/g°c) from 20.0°c to 60.0°c. what is the mass of the water that is being heated? 15 g 40 g 63 g 80 g

Answers

Answer:

15 grams of water will absorb 2,500 Joules  in going from 20.0 to 60.0 C.

Explanation:

The heat involved in raising a mass (m) of a substance with a specific heat (c) from one temperature to another (Delta T) is given by:

Heat = mc(Delta T)

2,500 Joules = m*(4.186J/gC)*(60C-20C)

2,500 Joules = m*(4.186J/gC)*(40C)

2,500 Joules = m*(4.186J/gC)*(40C)

m = (2,500J)/(4.186*40J/g)

m = 14.93 grams

Answer: B (15g)

Explanation:

50 atoms, 15 were isotope A, 30 were isotope B, and 5 were isotope C, which isotope would be the most abundant?

Answers

The most abundant isotope among the given Isotopes will be Isotope B

How to calculate percentage abundance of isotopes ?

To calculate the percent abundance of each isotope in a sample of an element, we usually divide the number of atoms of a particular isotope by the total number of atoms of all isotopes of that element and then multiply the result by 100.

For  Isotope A ;

% Abundance =  15/50 x 100

                        =  30 %

For  Isotope B ;

% Abundance =  30/50 x 100

                        =  60 %

For  Isotope A ;

% Abundance =  5/50 x 100

                        =  10 %

Hence, The most abundant isotope among the given Isotopes will be Isotope B.

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Take a small amount of water and milk in two different but similar container's. Freze them by putting them in a refrigerator .NOw melt them,in the sunshine,boil them on the same stove under the same condition ,and evaporate them completely .note there time during changing of their states .what similarities and differences you find while changing the states of noth of the materials

Answers

All liquids evaporate if exposed to certain elements.

What is Evaporation ?

Evaporation is the process by which water changes from a liquid to a gas or vapor.

Evaporation is the primary pathway that water moves from the liquid state back into the water cycle as atmospheric water vapor.

All liquids evaporate if exposed to certain elements.

The rate at which a liquid evaporates depends on its molecular structure.

The other factors that affect evaporation are surface area, temperature and air movement.

We can also do a few fairly simple experiments to demonstrate the effect that the various factors have on the rate of evaporation.

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Use the References to access important values if needed for this question. The Pauli Exclusion Principle tells us that no two electrons in an atom can have the same four quantum numbers. For each of the orbitals below list a set of possible quantum numbers. Give only one value for each Orbital ... n ... ... l ... ... ml ... ... ms ... 1s fill in the blank 4 There are a total of values possible for ml 3s

Answers

The quantum numbers are used to describe the position of an electron in atom.

What are quantum numbers?

The quantum numbers are used to describe the position of an electron in atom. I have attached a picture that shows the complete question.

For the 1s orbital;

n =1

l = 0

ml = 0

ms = ±1/2

For the 2s orbital;

n = 2

l = 1

ml = -1, 0, 1

ms = ±1/2

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Pls someone smart complete the matching

Answers

The answers go as following: H, C, D, F, J, G, B, A, E, I.

I’m sure you’re smart, don’t get yourself down. Just apply yourself and focus.

What is the noble gas configuration for tellurium (Te)?
The Periodic Table
OA. [Kr] 5s²4d105p4
O B. [Kr] 5s25p65d8
O C. [Xe] 5s25065
O D. [Xe] 5s24d1¹05p4

Answers

The correct answer to this question is option A.

Saturated fatty acids and unsaturated fatty acids differ in.

Answers

Answer:

the number off double bonds in a fatty acid chain

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Which was created to promote free trade? question 52 options: world bank un imf nafta Literary Element: Exposition: The exposition is informationthe character at the begining of the story. Pi is a boywho gut in an accident when he was young.onDoes this look right? Compare the structure and location of the human large intestine with those of the fetal pig. as time passes the sound wave Comment crire le pass continu en franais how will the course of history have been different in feudalism had not prevailed in the early mediaeval period Van Gogh and El Greco had what in common(check all that apply)Both were religiousBoth married youngBoth moved from the country of their birthBoth had difficulty launching their careerBoth went insaneBoth painted religious scenesBoth disliked materialism Two ways in which Colombia solved the problem of friction between two political parties were: allowing free elections alternating four-year terms between parties dividing the offices equally between the two parties declaring one party the absolute power Calculate costs of goods sold for Day Company ayuda porfaaa JHAKJAH es para hoy y no entiendo un kloA) Hala los nmeros que hagan verdadera la adicin.a) +2 + ? = 29b) ? + (-13) = -17c) -17 + ? = -38d) ? + (25) = 13e) ? + 12 = -2B) Encuentra el resultado de las siguientes adiciones.a) +5 + (-12) = b) -10 + (-13) = c) 20 + (-17) = d) -80 + 10 = e) 40 + (-60) =vence hoy:( I NEED HELP ASP...After becoming the Buddha, Siddhartha Gautama challenged the Hindu belief that: A. souls are reborn in new bodies after death. meditation is a healthy and important practice. C. society should be organized into strict castes. D. there is only one god who controls all people. Find the coordinates of the intersection of the diagonals of parallelogram HJKL with the given vertices: H(-1, 4), J(3, 3), K(3, -2), L(-1, -1). (Drawing a picture helps!)thank you! Find two functions definedimplicity by this equation:(x 5) 3(y + 2) = 4 Calculate the mass of pure sodium chloride will yield enough hydrogen chloride gas to tralize 25 cm of 0.5 M potassium trioxo- bonate(IV) solution. NACI=58.5, HC1 = 36.5, K,CO, = 138) Write 1 3/5 as an improper fraction? help me A rectangle has a length of 10.3 centimeters and a width of 6.8 centimeters.What is the area of this rectangle?34.2 cm35.02 cm70.04 cm108.24 cm andcombined to form Hinduism.O A. Vedism; native culturesOB. Anatolian beliefs; VedismC. Slavic beliefs; Hellenistic folk beliefsOD. Native cultures; Jainism Can someone please help me with this!! What is the measure of the central angle of a circle with radius 60 cm the intercepts a 15 pi centimeters arc A recipe that makes 18 chocolate chip cookies calls for 2.5 cups of flour. How many cookies can you make if you have 3.75 cups of flour (and enough of the other ingredients)?