0.089
Explanation:
2.5/ 14= .178 then 0.178/ 2 again and you get 0.089
Answer:
Molar mass of nitrogen gas = (14 × 2) = 28 g
But molar mass is 1 mole
[tex]28 \: g \: are \: 1 \: mole \: of \: nitrogen \\ 2.5 \: g \: are \: \{ \frac{2.5 \times 1}{28} \} \: moles \\ \\ = { \boxed{ \boxed{0.089 \: moles}}}[/tex]
what is the function or protons, neutrons, and electrons?
someone help please
Answer:
An atom is composed of them
Explanation:
Answer:
Each element has a different amount of protons. Neutrons are responsible for combining with protons in the nucleus together to be held by the strong force. Too many neutrons in an atom will result in radioactive decay due to the neutrons' force overpowering the strong force. Electrons are the weirdest particles.
Explanation:
sorry if thats too much to read but i hope that helps :)
7.In which state of matter molecules have more energy to vibrate.
Answer: Gas
Explanation: The gas particles have big distances between them. Solid – In a solid, the attractive forces keep the particles together tightly enough so that the particles do not move past each other. Their vibration is related to their kinetic energy. In the solid the particles vibrate in place.
Which part of the atom cannot have its location accurately determined and is modeled by a cloud around the center of the
atom?
Answer:
the electron
Explanation:
3. Convert a measurement of 10 L to its equivalent in mL.
4. Convert a measurement of 1000 g to its equivalent in kg.
HELP!???!!!!
Answer:
3...... 1L = 1000ml
4. 1000g = 1 kg
Explanation:
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Difference between hydrocarbons and organic compounds
Answer:
hydrocarbons contain both Hydrogen and Carbon while organic compounds
are compounds in which one or more atoms of Carbon are covalently linked
with other elements
Explanation:
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How many neutrons are in the nucleus of a chlorine-35 isotope?
Answer:
The answer is 18
Explanation:
Other atoms of chlorine may have 20 neutrons in the nucleus. These atoms of chlorine have different atomic mass numbers. The isotope that has 18 neutrons has an atomic mass number of 35.
Substance A is a gas, Substance B is a liquid and Substance C is a solid. All of the substances are at the same temperature and pressure. Which of the following shows the correct relationship of the strength of the intermolecular forces in each substance?
Answer:C
Explanation:
1.Volume of liquid in
a. 10 mL graduated cylinder
How many significant figures in this measurement?
Answer:
1 significant figure.
Explanation:
Since 10 does not have any decimals in it, we count the zeros from right to left. Doing this leaves us with one sig fig.
How many molecules are present in 2 H₂ SO4
Answer:
1 mol of H2SO4 contains 6.022 x 10^23 molecules. : 0.5 mol of H2SO4 contains 0.5 x 6.022 x 10^23 molecules. = 3.011 x 10^23 molecules . that is 49 g of H2SO4 contains 3.011 x 10^23 molecules of H2SO
Explanation:
A tire pressure gauge reads 33.0 pounds per square inch. How many kPa is this?
Answer:
227.5kpa
Explanation:
Tyre pressure is the air pressure present in the tubes of the tires to maintain the grip and movement. The tire pressure gauge will be 227.527 kPa.
What are pascal and pSI?
Pascal is the SI unit of the air pressure and hydraulic pressure, whereas the pounds per square inch is the imperial unit of the air pressure measurement.
We know, that 1 (PSI) pounds per square inch are equivalent to 6,895 Pa. Then, 33 PSI will be:
[tex]33 \times 6,895 = 227,527.08 \;\rm Pascals[/tex]
If one kilopascal contains 1000 pascals, therefore, 227,527.08 Pa contains,
[tex]\dfrac{ 227,527.08}{1000}= 227.527 \;\rm kPa[/tex]
Therefore, 227.527 kPa is equivalent to 33 PSI.
Learn more about PSI and kPa here:
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Please do this Please help me
Please do this
Answer:
CO2 + C = 2CO
N2 + 3H2 = 2NH3
Explanation:
BOTH THE SIDES ARE BALANCED NOW :)
Problem: Convert 30 cm to mm.
Need full process pls help
Answer: 300mm
Explanation:
30cm x (10mm/1cm) x (1mm/1mm) = 300mm
Btw, I'm not sure about the (1mm/1mm).
According to Newton's third law of motion, for every action force, there is
A.an equal and opposite reaction force.
B.gravitational force.
C.an unequal reaction force.
D.none of these
Answer:
A. an equal and opposite reaction force
Explanation:
This means that there is a natural reaction of force
Multiply 28.3 x 22.2 x 3.65 and round to the correct number of significant
figures.
Answer:2293
Explanation:
28.3*22.2*3.65=2293.149
=2293 1sf
Atoms are mostly made up of the
between electrons and the nucleus.
Answer:
yes
Explanation:
How many joules are equivalent to 450 calories?
Answer:
Below
Explanation:
To convert calories to joules, you need to multiply the value by 4184
450 x 4184 = 1882800 J
If your teacher requires you to round to significant figures, you would round to 2 sig figs as 450 only has 2 sig figs
450 x 4184 = 1.9 x 10^6
Hope this helps! Best of luck <3
Calculate the no. of each atoms presents in 10 grams of calcium carbonate.
Molar Mass of Calcium carbonate:-
[tex]\\ \sf\longmapsto CaCO_3[/tex]
[tex]\\ \sf\longmapsto 40u+12u+3(16u)[/tex]
[tex]\\ \sf\longmapsto 52u+48u[/tex]
[tex]\\ \sf\longmapsto 100u[/tex]
[tex]\\ \sf\longmapsto 100g/mol[/tex]
Given Mass=10g[tex]\boxed{\sf No\:of\;moles=\dfrac{Given\:Mass}{Molar\:Mass}}[/tex]
[tex]\\ \sf\longmapsto No\:of\;moles=\dfrac{10}{100}[/tex]
[tex]\\ \sf\longmapsto No\:of\:moles=0.1mol[/tex]
Now
[tex]\boxed{\sf No\:of\:molecules=No\;of\:moles\times Avagadro\: No}[/tex]
[tex]\\ \sf\longmapsto 0.1\times 6.023\times 10^{23}[/tex]
[tex]\\ \sf\longmapsto 6.023\times 10^{22}molecules[/tex]
30
En la clase de investigación de la Escuela José de Diego, los estudiantes de
noveno grado han estado trabajando en una propuesta de investigación para
presentarla como parte de los proyectos de Feria Científica del Programa de Ciencias
de su distrito escolar. Desde el planteamiento del tema y durante todo el proceso de
experimentación, todo les ha ido bien y el grupo ha trabajado en armonía. Cuando
llegaron a la parte del análisis e interpretación de datos, confrontaron alguna dificultad
en el proceso.
(6 Points)
A. ¿Qué es lo primero que debe hacer el grupo antes del análisis e interpretación
de los datos?
B. Menciona todas las formas en las que se puede recopilar la data experimental
que va a ser analizada e interpretada.
Enter your answer
¿Puedes escribirlo enigles por favor?
What's the major difference between carbon and other group IV elements, excluding allotropy
Answer:
Carbon has an ability of catenation which other group IV elements lack.
Explanation:
Catenation is the ability for an element to form multiple bonds with other elements leading rise to long chains of compounds.
An example is organic compounds.
[tex].[/tex]
Calculate the percentage of limestone that dissolved from each solution. Start by subtracting the final mass from the initial mass. Divide that number by the initial mass. Then multiply the result by 100 to make it a percent. Use this formula:
% dissolved= initial mass- final mass/ initial mass x 100
ORIGINAL: 0% Acid 33% Acid 66% Acid 100% Acid
Initial Mass (g) 10.0 10.1 10.0 9.9
Final Mass (g) 10.0 10.0 9.8 9.5
Record the percentage of limestone dissolved in each acid concentration.
Look at attched...
9514 1404 393
Answer:
see attached
Explanation:
It works nicely to let a spreadsheet do the calculations described in your problem statement.
You don't actually have to multiply by 100 to make the number a percent. Spreadsheets have the capability to show a value as a percentage just by changing the format.
Characteristics used to describe matter are called
O
A. physical properties.
O
B. chemical properties.
O
C. both A and B.
O
D. neither Anor B.
Answer:
A.physical properties
(giving brainlist! What should a simplified model of a large molecule like glucose show?
Glucose is a carbohydrate and monosaccharide sugar molecule that is the energy source for organisms. The simplified model of a glucose molecule will show six carbon atoms, six oxygen atoms, and twelve hydrogen atoms.
What is glucose?Glucose is one of the monosaccharide sugar that is the most abundant energy source with a molecular formula of C₆H₁₂O₆. It consists of carbon, hydrogen, and oxygen atoms with a molecular mass of 180.156 g/mol.
It is a sugar-containing aldehydic group with a six-carbon making it aldohexoses. It is found in honey and fruits that are the source of the energy and regulates metabolic and cellular reactions.
Therefore, the molecular structure of glucose contains six carbon, twelve hydrogens, and six oxygen atoms.
Learn more about glucose here:
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Draw atomic orbital diagrams representing the ground-state electron configuration for each of the following elements.
a. Na
b. Co
c. Kr
How many unpaired electrons are present in each element?
what's the basic oxide
Answer:
Basic oxides are oxides that show basic properties in opposition to acidic oxides and that either react with water to form a base; or react with an acid to form a salt and water which are called neutralization reactions.
Explanation:
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Explanation:
A basic oxide is an oxide that shows basic properties in opposition to acidic oxides and that either ⁕reacts with water to form a base; or ⁕reacts with an acid to form a salt.
Please help me please
Answer:
Sugar solution seperation method is Distillation
iron power and sand separation method is Magnetic separation
Petrol and diesel separation method is Fractional Distillation
Camphor and glass powder seperation method is Sublimation
I hope this will have you
have a great day
HELP!!
Which of the following statements best explains why oil does not dissolve in water?
A.
Polar water molecules attract each other more strongly than they attract nonpolar oil molecules.
B.
Polar water molecules attract each other less strongly than they attract nonpolar oil molecules.
C.
Water molecules and oil molecules are both polar and attract each other equally well.
D.
Water molecules and oil molecules are both nonpolar and attract each other equally well.
Answer:
A.
Explanation:
Water molecules are polar molecules and oil molecules are non polar molecules. Non polar molecules only mix well with othet polar molecules
Find the density of a glass ball which has a mass of 116 g and volume of 33 mL
Answer:
density = m÷V
= 116÷33
= 3.5151515151...
1) If you have a cubic block of ice (H20) with a mass of 1400 grams (1.4 kg), and it has a volume
of 1300 cm3, what is its density?
Taking into account the definition of density, the density of the cubic block of ice is 1.077 [tex]\frac{grams}{cm^{3} }[/tex]
In first place, density is defined as the property that matter, whether solid, liquid or gas, has to compress into a given space.
In other words, density is the relationship between the mass of a substance (or a body) and its volume. It is an intrinsic property of matter, since it does not depend on the amount of substance that is considered.
The expression for the calculation of density is the quotient between the mass of a body and the volume it occupies:
[tex]density=\frac{mass}{volume}[/tex]
In this case, you know:
mass= 1400 gramsvolume= 1300 cm³Replacing in the definition of density:
[tex]density=\frac{1400 grams}{1300cm^{3} }[/tex]
Solving:
density= 1.077 [tex]\frac{grams}{cm^{3} }[/tex]
Finally, the density of the cubic block of ice is 1.077 [tex]\frac{grams}{cm^{3} }[/tex]
Learn more about density:
brainly.com/question/952755?referrer=searchResults brainly.com/question/1462554?referrer=searchResultswhich picture shows the particles in a compound?
picture I and II
picture I
picture III and IV
picture II
hi <3
compound are 2(or more) elements combined together
thus your answer will be picture I
hope this helps <3
Correct answers only please
Answer:
Delta. Aldehyde
Explanation:
