Answer: Groups
Explanation:
The number of valence electrons of an element can be determined by the periodic table groups in which the element is categorized
P.S. Families rows in the table!
How do I find the volume and density
The entire question says:
"A rock with a mass off 44.18 grams is dropped into a gratued cylinder. The water level in the cylinder rises from 15.20cm³ to 21.72cm³."
a) Calculate the volume of the rock.
The volume of the rock is equal the difference between the water level with the rock and the water level without the rock. That happened because when you put the rock inside the cylinder, the volume of it has been increased, and the volume of the rock is the value that increased. So, let's do this account:
[tex]V_r[/tex] is the volume of the rock.
[tex]V_r=21.72 - 15.20\\V_r = 6.52[/tex]
[tex]d=\frac{44.18}{6.52}[/tex]
Therefore, the volume of the rock is 6.52cm³
b) Calculate the density of the rock.
To calculate the density of some material, we should divide the mass of the material by its volume. Below, you can see the formula:
[tex]\boxed{density=\frac{mass}{volume} }[/tex]
Now that we know about it, it is easier to solve our question. We just do this count. The volume is 6.52cm³ and the mass is 44.18g.
[tex]d=\frac{m}{v} \\[/tex]
[tex]d=\frac{44.18}{6.52}[/tex]
[tex]d \approx 6.78[/tex]
So, the density of this rock is approximately 6.78g/cm³.
I hope I've helped. ^^
Enjoy your studies! \o/
which 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
give the name and symbol of your favorite element and explain why it your favorite element.
Answer:
The most important elements that we use in everyday life include carbon, hydrogen, oxygen, with smaller amounts of things like chlorine, sulfur, calcium, iron, phosphorus,nitrogen, sodium, and potassium. Apart from these, other elements include magnesium, zinc, neon, and helium are also in our daily existence.
all these element are my favourite element .......
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 causes the pressure in a gas
Answer:
gas pressure is caused when gas particles hit with the walls of their container the more often the particles hit with the walls and the faster they are moving when they do this the higher the pressure
Answer:
Name one very important thing that separates the Plant kingdom from all other kingdoms.
Explanation:
12.Write the basis of naming of the following elements. 1.Neptunium,2.Mendelevium,
Answer:
The planet Neptune inspired the name of the element Neptunium.
Dmitri Mendeleev, who created one of the earliest periodic tables, was the source of the name of the element Mendelevium.
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 :)
13. Find the total number of atoms present in the following molecules. a. 5 H₂O b. Zn Cl₂
Please Please help
Answer:
5H²O= 23
ZnCL²= 135
have a great day
? Is a scientist who is studying cancer with the
goal of finding an effective treatment doing
pure research or applied research?
A scientist who is studying cancer with the goal of finding an effective treatment is doing applied research.
Applied research refers to scientific investigations that are conducted with the specific purpose of solving practical problems or improving existing technologies. In the case of cancer research, the scientist is aiming to find a treatment that can be directly applied to patients in order to combat the disease.
In contrast, pure research, also known as basic or fundamental research, is conducted to gain a deeper understanding of a particular phenomenon without any immediate practical application in mind. Pure research aims to expand scientific knowledge and explore new theories or concepts. While pure research may indirectly contribute to the development of applied research, its primary goal is to advance our understanding of the natural world.
In summary, a scientist studying cancer with the goal of finding an effective treatment is engaged in applied research, as they are conducting research with the intention of solving a specific problem and developing practical solutions for the benefit of cancer patients.
Learn more about applied research,here:
https://brainly.com/question/11041802
#SPJ3
Can anyone plz provide me 30 element with the list of ::
Atomic number , Name of element , symbol , Atomic mass ..
plz
i will give Brainliest if you provide me right ans
Electron Configuration table:-
[tex]\boxed {\begin{array}{|c|c|c|c|cccc|}\cline {1-8}\sf Element & \sf Symbol & \sf Valency & \sf{Atomic\:Number} & & \sf{Electron} & \sf Configuration & \\ \cline {5-8} &&&&\bf K&\bf L &\bf M&\bf N \\ \cline {1-8}\rm Hydrogen &\sf H & 1 & 1 & 1 &&& \\ \cline {1-8}\rm Helium &\sf He & 0 & 2 & 2 &&& \\ \cline {1-8}\rm Lithium &\sf Li & 1& 3 &2 &1 && \\ \cline {1-8}\rm Beryllium &\sf Be & 2 & 4 & 2 & 2 && \\ \cline {1-8}\rm Boron &\sf B & 3 & 5 & 2 & 3 && \\ \cline {1-8}\rm Carbon & \sf C & 4 & 6 & 2 & 4 && \\ \cline {1-8}\rm Nitrogen &\sf N & 3 & 7 & 2 & 5 && \\ \cline {1-8}\rm Oxygen &\sf O & 2 & 8 & 2 & 6 && \\ \cline {1-8}\rm Fluorine &\sf F & 1 & 9 & 2 & 7 && \\ \cline {1-8}\rm Neon & \sf Ne & 0 & 10 & 2 & 8 && \\ \cline {1-8}\rm Sodium &\sf Na & 1 & 11 & 2 & 8 & 1 &\\ \cline {1-8}\rm Magnesium &\sf Mg & 2 & 12 & 2 & 8 & 2 & \\ \cline {1-8}\rm Aluminium &\sf Al & 3 & 13 & 2 & 8 & 3 & \\ \cline{1-8}\rm Silicon &\sf Si & 4 & 14 & 2 & 8 & 4 & \\ \cline {1-8}\rm Phosphorus &\sf P & 3 & 15 & 2 & 8 & 7 & \\ \cline {1-8}\rm Sulphur &\sf S & 2 & 16 & 2 & 8 & 8 & \\ \cline{1-8}\rm Chlorine &\sf Cl & 1 & 17 & 2 & 8 & 8 &1 \\ \cline {1-8}\rm Argon &\sf Ar & 0 & 18 & 2 & 8 & 8 & 2 \\ \cline {1-8}\rm Potassium &\sf K & 1 & 19 & 2 & 8 & 8 &3 \\ \cline {1-8}\rm Calcium &\sf Ca & 2 & 20 & 2 & 8 & 8 & 4 \\ \cline{1-8} \end {array}}[/tex]
Convert a length of 15.0 m to inches
Answer:
15 meters = 590,551 inches
ions differ from atoms in their number of
a:electrons
b:neutrons
c:protons
d: neutrons & protons
e: electrons& protons
Answer:
e. electrons and protons
Explanation:
Ions are atoms that have gained or lost electrons.
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]
the ion Te2- has how many protons
Which statement about pure substances and molecules is correct?
O All pure substances are molecules.
O All molecules are pure substances.
o Molecules cannot be pure substances.
O Pure substances cannot be molecules.
A molecule must be a pure substance hence the correct answer is " All molecules are pure substances."
A pure substance is one which contains only one element or compound. A molecule is the smallest unit of a compound that can exist independently.
When we refer to a molecule of a compound, we are referring to that pure substance that contains only the element(s) that compose the compound.
Hence; All molecules are pure substances.
Learn more: https://brainly.com/question/19922822
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
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
Is hydrogen peroxide a element, compound or a mixture?
Answer:
hydrogen peroxide is a compound
What is 0.3m equal to mm?
0.3×100cm=300cm
300cm×10mm=3000
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=searchResultsIf a large marshmallow has a volume of 3 in cubed, and density of .242 g/cm cubed, how much would it weigh in grams
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.
Atoms are mostly made up of the
between electrons and the nucleus.
Answer:
yes
Explanation:
what is electron configuration. dont use googlrl plz
Answer:
Electron configuration is the structural arrangement notation of electrons in the shells or energy levels of an atom.
Explanation:
[tex]{ \sf{}}[/tex]
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).
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...
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:
mark me as brainliest ❤️
what starting material with these reagents iwll result in this product 1.nanh2 2.ch3ch2br 3.h2, lindlar's cat.
Explanati la materia el convino
es carbón ya irogno
ed
Mannose is a type of sugar that consists of C, H and O and its relative molecular mass is 180. If 2.36 g sample of mannose contains 0.9444 carbon and 0.158 g hydrogen , calculate the molecular formula.
Answer:
I think CH2
Explanation:
I am not so sure
C H
×
2 1
what is a characteristic of matter that allows it to change to something new? THE CORRECT ANSWER GETS BRAINLIEST!!!!
Answer:
a chemical property
Explanation:
