Answer:
file link http/www.openfree
How many moles are present in 2.45×10²³ molecules of CH4 ? Show your work!!!
The number of moles of CH4 present in 2.45 × 10²³ molecules is 0.41 moles.
How to calculate number of moles?The number of moles of a substance can be calculated by dividing the number of molecules by Avogadro's number.
no. of moles = no of molecules ÷ 6.02 × 10²³
According to this question, 2.45×10²³ molecules of CH4 are given. The number of moles is calculated as follows:
no of moles = 2.45 × 10²³ ÷ 6.02 × 10²³
no of moles = 2.45/6.02
no of moles = 0.41moles
Therefore, the number of moles of CH4 present in 2.45 × 10²³ molecules is 0.41 moles.
Learn more about number of moles at: https://brainly.com/question/21494857
why sodium chloride is a poor conductor of electricity in solid state?
Answer:
Because the electrons in this ionic compound arent free to move and so cannot carry charge. For an iconic compound to conduct electricity it must be a liquid, either in a molten form or dissolved in water.
Explanation:
Is this clear?
Question 2: (Show your dimen analysis work!)
What is the mass of 7.2 mol of Sulfur?
g-
is the answer A or B?
Answer:
Letter DHope I helped!♥ ♥ ♥ ♥ ♥ ♥ ♥ ♥ ♥ ♥ ♥ ♥
1.What phase change is being observed when ice melts? *
2. What phase change is being observed when water droplets are found outside the glass of a cold water?
3. When dry ice (CO2) is placed on top of the table, after couple of minutes there is no dry ice left. What kind of phase change is it?
4. How do we classify the phase changes in matter if we put water in the freezer of the refrigerator?
Answer:
1 melting
2
3 evaporationa
4 freezing point
The phase of the following are:
1. Melting.
2. Condensation.
3. Evaporation
4. Freezing point.
What is melting?When any substance change from solid state to liquid state, it is called melting.
Ice change into water is an example.
What is condensation?Condensation is a process in which the air is cool down and convert into liquid from, like dew.
Water drops outside cold water bottle is an example.
What is evaporation?Evaporation is the opposite of condensation, in which the liquid become so hot that it change into gaseous form.
Water turns into vapor in hot temperature.
What is freezing point?Freezing point is when liquid is converted into solid.
Water converted into ice in fridge is an example.
Thus, The phase of the following are:1. Melting., 2. Condensation., 3. Evaporation., 4. Freezing point.
Learn more about state of matters, here:
https://brainly.com/question/9402776
Discuss the issue of “energy return” when considering a biofuel
Explanation:
Regarding non-GHG environmental impacts, research suggests that production of biofuel feedstocks, particularly food crops like corn and soy, could increase water pollution from nutrients, pesticides, and sediment (NRC 2011). Increases in irrigation and ethanol refining could deplete aquifers (NRC 2011).Regarding non-GHG environmental impacts, research suggests that production of biofuel feedstocks, particularly food crops like corn and soy, could increase water pollution from nutrients, pesticides, and sediment (NRC 2011). Increases in irrigation and ethanol refining could deplete aquifers (NRC 2011)
Represente lo que ocurre mediante flechas cuando dos cargas negativas, dos cargas positivas y una carga positiva y otra negativa se acercan Es urgente
Answer:
Neutral.
Explicación:
Cuando dos cargas negativas, dos cargas positivas y una carga positiva y una carga negativa se unen, los átomos se vuelven neutrales porque las cargas opuestas cancelan el efecto de la otra. Si hay igual número de cargas y además son opuestas entre sí, entonces todas estas cargas cancelan el efecto de la otra formando el átomo neutral, pero si hay diferencia en el número de cargas, entonces la carga que es alta en número aparece en el átomos.
Identify the acid and conjugate base pair in the following equation:
Answer:
hola no ablo inalgun moderador puede acabar a este otro este me borró respuesta que no debió borrar
5 개의 kpop 노래 쓰기
너희들은 나를 도울 수 있습니까?
Answer:
que es eso?
Explanation:
Answer:
[tex]\huge\colorbox{violet}{✏﹏ \: K-POP \: Songs \:}[/tex]
✏ Dynamite (BTS)
✏ Pretty Savage (BlackPink)
✏ Life Goes On (BTS)
✏ On The Ground (Rosé)
✏ Lovesick Girls (BlackPink)
✏ Wannabe (ITZY)
✏ I Can't Stop Me (Twice)
✏ Growl (EXO)
Butter - BTS (곧 출시 될 예정입니다)
Determine the approximate mass of the isotope of carbon in the image.
Formulas
A)O amu
B)6 amu
12 amu
D)18 amu
Examples of fossil fuels are
1)Gold, Peat Moss, and Minerals
2)Coal, Petroleum, and Natural Gas
3)Solar Energy and Light
2. Which is true of all elements?
A. They have no physical properties
B. They are solids at room temperature.
C. They break down during chemical reactions.
D. They are each composed of only one kind of atoms.
How many grams are there in 3.26 x 10^25 Molecules of Mg(NO3)2?
Answer:
8025.996 grams are there in 3.26*10²⁵ Molecules of Mg(NO₃)₂.
Explanation:
Avogadro's Number or Avogadro's Constant is called the number of particles that make up a substance (usually atoms or molecules) and that can be found in the amount of one mole of said substance. Its value is 6.023*10²³ particles per mole. Avogadro's number represents a quantity without an associated physical dimension, so it is considered a pure number that allows describing a physical characteristic without an explicit dimension or unit of expression. Avogadro's number applies to any substance.
Then you can apply the following rule of three: if 6.023*10²³ molecules are contained in 1 mole of the compound, 3.26*10²⁵ molecules are contained in how many moles of the compound?
[tex]amount of moles=\frac{3.26*10^{25}molecules*1 mole }{6.023*10^{23}molecules }[/tex]
amount of moles= 54.12
Molar mass is the mass of one mole of a substance, which can be an element or a compound. Being the molar mass of the compound Mg(NO₃)₂ 148.3 g/mole, so 54.12 moles of the compound contains 8025.996 grams.
8025.996 grams are there in 3.26*10²⁵ Molecules of Mg(NO₃)₂.
All the body cells in a human have the same hereditary information. However, they do not all look and function in the same way. This difference is caused by:
Answer:
All the body cells in a human have the same hereditary information, meaning they have the same DNA because they came from one source (both parents). However, they have differences in the way they function and this is as a result of each cell in the body have a pool of DNA and then they can select the genes they would like their features to be expressed depending on some factors such as signals they receive in and out of the cells, environmental factors, leading to different functions of the cells and the way they look.
.
What happens when a liquid becomes a gas?
A. It changes shape and volume
B. It changed volume but not shape
C. It changes shape but not volume
D. Nothing happens
Answer:
A It changes shape and volume
Explanation:If a liquid turns into a gas it starts to change shape since they are not the same
Answer:I believe it’s A
Explanation:when a liquid turns into a gas it the volume increases of the substance and of course the shape changes
Explain how you find the instantaneous speed or velocity of an object
I dont want to know WHAT it is I want to know HOW to find it
Answer:
divide the distance by the average
Explanation:
ash QC ok
How does your Respiratory system work with your Cardiovascular system?
To supply oxygen to the body, the respiratory system works closely with the circulatory system. As oxygen is taken in into the lungs, it travels through blood vessels, which then circulate oxygen-rich blood to cells and tissues.
Organelles are
O tiny structures in the cell that carry out the cell's activities
O responsible for digestion in the cell
O found outside of the membrane
responsible for producing power for the cell
Answer:
o responsible for digestion in the cell
o found outside of the membrane
How many mL of 0.10 M H₂SO₄, is
25.0 ml
50.0 ml
100 ml
150 ml
200 ml
Answer:
0.0025 moles H₂SO₄
0.0050 moles H₂SO₄
0.0100 moles H₂SO₄
0.0150 moles H₂SO₄
0.0200 moles H₂SO₄
Explanation:
The question is "How many MOLES..."
Molarity, M, is an unit of concentration in chemistry defined as the ratio between moles of solute and liters of solution. To solve this question we must find the moles of 0.10M H₂SO₄ in the volumes:
25.0mL:
0.025L * (0.10mol / 1L) = 0.0025 moles H₂SO₄
50.0mL:
0.050L * (0.10mol / 1L) = 0.0050 moles H₂SO₄
100.0mL:
0.100L * (0.10mol / 1L) = 0.0100 moles H₂SO₄
150.0mL:
0.150L * (0.10mol / 1L) = 0.0150 moles H₂SO₄
200.0mL:
0.200L * (0.10mol / 1L) = 0.0200 moles H₂SO₄
What relates moles of 1 substance to another in a chemical reaction?
Answer:
Chemical reactions list reactants and products in molar amounts, not just molecular amounts. We can use the coefficients of a balanced chemical equation to relate moles of one substance in the reaction to moles of other substances
Explanation:
1. Why won't Frank's daughter buy him deodorant anymore?
O it causes death
It doesn't mask the smell
o it causes cancer
She is superstitious
Answer:
no lo sick parece efalso jhkr
Explanation:
The Frank's daughter buy him deodorant anymore because it doesn't make smell.
What is deodorant?Deodorant is defined as a chemical applied to the skin to prevent or disguise body odor caused by the breakdown of perspiration or vaginal secretions by bacteria.
There are some side effects of deodorant if we use it in excess or regular.
Deodorants induce irritation and redness (due to alcohol), which leads to itching and, eventually, mild browning of the underarm area.
Some of the deodorant may contains to much of aluminum.
Too much aluminum in your system can lead to bone disorders and dementia.
Thus, the Frank's daughter buy him deodorant anymore because it doesn't make smell.
To learn more about deodorant, refer to the link below:
https://brainly.com/question/28357692
#SPJ2
Air is made up of different gases, such as oxygen, nitrogen, and carbon dioxide.Which statement best describes these three components of air?They are all classified as pure substances.They cannot react with another substance.They are chemically bonded to one another.They can be classified as elements.
Answer:
The three components of air are all classified as pure substances since they are not chemically bonded so they can be separated by certain processes and be present as a pure substance.
Explanation:
The components of air are all pure substances, the correct option is A.
What are Pure Substances?A pure substance is a single type of matter that cannot be physically divided into other types of matter.
A pure substance has a known and consistent composition at all times.
A physical combination of two or more pure chemicals that maintain each substance's unique chemical identity is referred to as a mixture.
A pure material exists as a distinct entity. Mixtures are not pure substances, but elements and compounds are.
The characteristics of the mixture are sort of an average of the characteristics of the constituent ingredients.
The ingredients that make up a compound are substantially distinct from one another. However, a blend resembles the constituent parts.
Air is made up of different gases, such as oxygen, nitrogen, and carbon dioxide.
Air is a mixture of oxygen, nitrogen, and carbon dioxide, which are pure substances.
The statement that best describes the components of air is that they are all pure substances.
To know more about Pure substances
https://brainly.com/question/24462192
#SPJ6
Calculate the solubility in mol/L of Lead(II) carbonate (PbCO3) at 298 K.
Ksp = 7.4 x 10-14
02.7 107 mol/L
O 7.2 x 10-7 mol/L
o 3.5 x 10-4 mol/L
02.7 x 10 5 mol/L
o 7.4 x 10-7 mol/L
Answer:
2.7x10⁻⁷mol/L
Explanation:
Based on the equilbrium:
PbCO₃(s) ⇄ Pb²⁺(aq) + CO₃²⁻(aq)
The solubility product, Ksp, is defined as:
Ksp = 7.4x10⁻¹⁴ = [Pb²⁺] [CO₃²⁻]
Now, solubility is defined as the amount of PbCO₃ that is dissolved, that is the concentration of the ions. Thus:
Solubility = S = [Pb²⁺] = [CO₃²⁻]
Replacing:
7.4x10⁻¹⁴ = [S] [S]
7.4x10⁻¹⁴ = [S]²
S = 2.7x10⁻⁷mol/L
plz help me get it right and no links
Answer:
get what right?
Answer:
You didn't post the question.
Explanation:
Edit your question and I'll try to help you.
Hope this helped? Lol.
Please Answer all 4 questions and i will give brainliest!
You haven't added the 4 questions, so when you upload them, i'll answer.
How many hydrogen atoms are present in an alkyne with 5 carbon atoms?
Answer:
cuatro
Explanation:
ino->4
Alkynes are triple bonded hydrocarbons. There are 7 hydrogen in an alkyne with 5 carbon atoms. This compound can be named as pentyne.
What are alkynes?Alkynes are hydrocarbons with one triple bond between two carbon atoms. alkynes are unsaturated compounds. Alkynes are named with the suffix 'yne' like ethyne, propyne etc..
There are three types of hydrocarbons namely, alkanes, alkenes and alkynes. Alkanes are saturated hydrocarbon having single bond between carbon atoms. Eg. methane , ethane etc all having suffix of 'ane'. Alkenes are unsaturated hydrocarbons with double bond between two or more carbon atoms.
Alkenes are named with the suffix 'ene'. Hence, the names become ethene, propene etc. The prefix for the names of hydrocarbons is based on the number of carbons. meth for 2, eth for 2 prop for 3, but for 4 and pent for 5 and so on.
The valency of carbon is 4 and it will bind to four other atoms. When it forms triple bond with a carbon it can bind to one hydrogen only. If it is a middle carbon then it dont have a hydrogen since either side will be carbons.
Thus for a 5 carbon alkyne, there will be total 7 hydrogens and the compound is pentyne.
To find more on pentyne, refer here:
https://brainly.com/question/15022928
#SPJ6
The hardest coal has
the most energy and
burns the cleanest.
Where do coal miners
find the HARDEST
coal?
Give me an example of electrons. in your own words.
Answer:
Electrons are the negative particles that are part of an atom
Explanation:
It’s short sorry
If the temperature of a gas inside a flexible container with a volume of 50 liters (L) decreases from 500°C to 100°C what will be the new volume of the container?
40.00L
10.00L
24.13L
103.6L
If the temperature of a gas inside a flexible container with a volume of 50 liters (L) decreases from 500°C to 100°C, then new volume will be 10L.
What is the relation between volume and temperature?Volume and temperature of the gas is directly proportional to each other and for this question, equation becomes,
V₁/T₁ = V₂/T₂, where
V₁ = initial volume = 50L
T₁ = initial temperature = 500°C
V₂ = final volume = ?
T₂ = final temperature = 100°C
On putting values, we get
V₂ = (50)(100) / (500) = 10L
Hence required volume of gas is 10L.
To know more about volume of gas, visit the below link:
https://brainly.com/question/4090112
#SPJ2
Which of the following is not a reason for extinction?
a change in climate
a change in predation rate
the ability to breed successfully
loss of habitat
Answer:
the ability to breed successfully
Explanation:
Answer:
the ability to breed successfully
Explanation:
the more offspring's an organism has, the less chance of extinction would happen. I hope that helped bestie