What element is represented in this model of the atomic number is 3
This is science
Answers
Answer:
lithium because it has an atomic number of three(you could have just googled which element has the atomic number 3)
Related Questions
how do i do the chemicals
Answers
you have to put them togeter
What percentage of Carbon (C) is present in one molecule of
Dichlorodifluoromethane (CF2Cl2), commonly known as Freon, an anti-freezing agent
used in automobiles.
Please round everything to whole numbers for this question. Use the following
masses in your calculations:
C = 12
F = 19
Cl = 35
Answers
The percentage of Carbon (C) present in one molecule of
Dichlorodifluoromethane (CF₂Cl₂) : 10%
Further explanationProust stated the Comparative Law that compounds are formed from elements with the same Mass Comparison so that the compound has a fixed composition of elements
With this law, we can calculate how many grams an element is needed to make a compound with a certain mass, as desired
MW Dichlorodifluoromethane (CF₂Cl₂) :
=12+2.19+2.35=120 g/mol
[tex]\tt \%mass~C=\dfrac{12}{120}\times 100\%=10\%[/tex]
Which of these ions has the correct charge?
O2-
B2+
P2-
Li2+
Answers
Answer:
02- i think your welcome hope it helps
What is a non-example of a nucleus? Please give me a non-living thing.
Answers
Answer:
They are prokaryotes and both have tough cell walls. ◦ The cytoplasm contains ribosomes, but no organelles. ◦ There is no nucleus for organisms in this category.
Explanation:
Answer:
rock- non living
( Prokaryotes don't have a nucleus)
Explanation:
A compound is made of two or more different atoms joined together. which image would best fit
Answers
Answer:
Where is your images?
Explanation:
cant solve the prblm without ur images
which bond is the strongest
Answers
Answer:
C
Explanation:
When two atoms share electrons, a covalent bond is formed. The more electrons shared between atoms, the stronger the bond. Single bonds have two electrons shared, double bonds have four electrons shared, and triple bonds have six electrons shared.
Therefore, triple bonds are the strongest as they require more energy to break.
Hope that helps.
How many atoms of nitrogen are in the chemical formula Ni(NO3)2?
Answers
Answer:
2
Explanation:
bc the 2 that's after a bracket refers to both oxygen and nitrogen, making oxygen 6 bc it already has a 3(3×2=6)
Answer:
2
Explanation:
Suppose the moon rotating on its axis just as quickly as earth would we still always see the same side of the earth explain
Answers
Answer:If the Moon rotated as fast as the Earth would we only see one side of the Moon? ... The Moon, on the other hand, rotates once around its own axis every 28 days, and once around the Earth in that same 28 days. The end result of this combination is that the same side of the Moon is always facing the Earth
Explanation:
The moon rotates on its axis along with revolution around earth. Both time are synchronized due to the gravitational pull and tides of earth. That's why we are seeing the same side of moon.
What is gravitational pull?Gravitational force is a force by which a body attracts other body towards its centre of mass. By the gravitational pulling of earth, we are all standing on the ground.
Gravitational force depends on the mass of the body. Earth attracts its nearby objects by gravitational force and thus towards moon also. In fact if moon is quickly rotating on its own axis we would see the other side of moon.
But the fact is that the earth gravitational pulling and tides of ocean make its own gravitation also make the moon tilted slightly and assume a prolate shape. The rotation of moon is thus tidally locked and synchronized with its revolution.
Hence, moon rotates exactly once every time as it revolve around earth in a tilted axis. Thus the other side will always hide from the earth's surface.
To find more about gravitational force, refer the link below;
https://brainly.com/question/12528243
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explain why the reaction between lead (II) nitrate and concentrated sulphuric (VI) acid starts and stops immediately?
Answers
Answer:
The reaction produces insoluble lead (II) sulphate which coats the surface of lead (II) nitrate [Pb(NO3)]
How many ELEMENTS are in Mg + 2HCl → H2 + MgCl2
Answers
Answer:
the answer is three I belive
Which statement describes a positive effect of selective breeding? A. Some desirable traits in a population can disappear. B. Offspring can be prone to genetic diseases. C. Parents can pass on useful traits to offspring, D. A population can end up with a lack of genetic diversity .
Answers
Answer:
C. Parents can pass on useful traits to offspring
Explanation:
Answer:
The Answer is C
Explanation:
Express in scientific notation. Choose the answer with the proper number of significant figures. 9x10^9/4.5x10^1
Answers
Answer:
Your answer should be 2.4 x 10^9. please hit the crown
Explanation:
A wave with a small wavelength has a high frequency.
options:
True
False
Answers
show how acid and base given below dissociates in water
Answers
Answer:
HOME is acid
KOH is base
Question: How hot is the sun?
Answers
Answer:
5,778 K
Explanation:
Under a certain set of conditions, the percent yield of a reaction that produces carbon dioxide is 75.0%. What mass in grams of CO2 will actually be recovered if the theoretical yield is 26.7 grams?
Answers
Answer:
Actual yield = 20.03g
Explanation:
[tex]% yield = 100.\frac{actual yield}{theoretical yield}[/tex]% [tex]yield[/tex] = [tex]100. \frac{actual \ yield}{theoretical \ yield}[/tex]
Actual yield = % yield.(theoretical yield) / 100
Actual yield = 75.26.7/100
Actual yield = 20.025
Answer: I got 20.025 and then I rounded it to 20.0
Explanation:
The volume of an object is 55mL in this city is 30g/mL. what is its mass
Answers
Answer:
Mass = 1650g
Explanation:
30g per mL is the density I suppose...
Solve for m!
30g/mL = m/55mL
Multiply by denominator to get numerator!
30* 55 =1650g
m = 1650g
Brainliest Appreciated!
What is the volume of a 25 g object with a density of 9.1 g/mL? please help me
Answers
Answer:
The answer is 2.75 mLExplanation:
The volume of a substance when given the density and mass can be found by using the formula
[tex]volume = \frac{mass}{density} \\ [/tex]
From the question we have
[tex]volume = \frac{25}{9.1} \\ = 2.747252...[/tex]
We have the final answer as
2.75 mLHope this helps you
Where does cellular respiration occur?
A.in your stomach
B. in your lungs
C.in your circulatory system
D.in your cells
Answers
Meg used two examples to represent two different states of matter.
Example 1: Young children dancing slowly around one another
Example 2: Newborn babies sitting in their given spots in a crib
Which statement is correct? (1 point)
a
Example 1 represents a gas and Example 2 represents a liquid.
b
Example 1 represents a liquid and Example 2 represents a gas.
c
Example 1 represents a liquid and Example 2 represents a solid.
d
Example 1 represents a solid and Example 2 represents a liquid.
Answers
Answer:
c Example 1 represents a liquid and Example 2 represents a solid.
Explanation:
Example 1: Young children dancing slowly around one another
The young children dancing slowly around one another can be pictured as the flow of liquid. In liquids, the molecules are held about weakly and they slide on top of each other. They are held by weak attractive forces. This is clear picture of a liquid.
Example 2: Newborn babies sitting in their given spots in a crib
This is clear example of a solid. In a solid the molecules are held about a fixed spot. The attractive forces in liquids is very great and the molecules therein do not move about randomly.
Match the term (exothermic) with the correct definition.
energy goes into the chemical and cool downs the surrounding area.
energy leaves the chemical and cools down the surrounding area
energy leaves the chemical and heats up the surrounding area
Answers
Answer:
energy leaves the chemical and heats up the surrounding area
Explanation:
which of the following metals are more reactive than mercury? Select all that apply
a. silver
b. iron
c. lithium
d. potassium
Answers
Q 1. Element M is a metal that forms compounds of the type MX2, MX3, and MX4, where X is a Chlorine (Cl).
I) What is the expected trend in the ionic radius of M in these compounds?
II) Arrange these compounds in order of decreasing ionic radius of M.
Do not respond if u don’t know the answer. I’ll report it and u will get a warning.
Answers
Answer:
See explanation
Explanation:
The ionic radius of metal M decreases as the magnitude of charge on the metal M increases. The ionic radius is the distance between the nucleus and the electron in the outermost shell of an ion. So, ionic radius decreases with increasing positive charge.
We can see that from the various formulae in the question that the metal forms cations M^2+, M^3+ and M^4+ respectively. The order of decreasing ionic radius of the compounds is;
MX2 > MX3 > MX4
Answer:
dont know
Explanation:
Someone help me please i’ll give brainly
Answers
Answer:
Gas, liquid, and plasma
Explanation:
Answer:
Liquid, Gas and Plasma
Explanation:
➨Think about it like this if you put a material made out of these and flipped it over which one would have the most effect of change in shape?
▶Liquid molecules slide past each other meaning they are not held in place.
▶Gas molecules are "excited" they bounce around everywhere meaning they are not held in place.
▶Plasma has no fixed shape or volume so it cant be held in place!
▶Solid molecules have a fixed shape so they cannot move on their own.
Hope I helped! Brainliest appreciated!
if a star were 36 trillion miles from the earth it would be about ___ light years from the earth
Answers
Answer:
6.12light years
Explanation:
Given parameters:
Distance of star from earth = 36 trillion miles
Unknown:
Distance in light years = ?
Solution:
A light year is the distance light travels in one year.
1 mile = 1.7 x 10⁻¹³ light years
36 trillion miles = 36 x 10¹² x 1.7 x 10⁻¹³ light years
= 6.12light years
What is the name of the group that contains potassium?
O Noble Gases
O Halogens
O Alkaline Earth Metals
O Alkali Metals
Transition Metals
Answers
Answer:
Alkali Metals
Explanation:
Calculate the number of moles of Na+ ions in 25g of sodium carbonate?
Answers
Explanation:
First, we need to calculate the number of moles of sodium carbonate we have in a 25 g sample. To calculate this, we will
find the molar mass of sodium carbonate (Na2CO3):
⇒ 2 × Molar mass of sodium + Molar mass of carbon + 3×molar mass of oxygen
⇒ 2 × 23 + 12 + 3 × 16
⇒ 46 + 12 + 48
⇒ 106g/mol
Thus, the molar mass of Na2CO3 is 106g/mol.
Therefore, number of moles = 25 ÷ 106
=> 0.2358 mol
Now, we know that every mole of Na2CO3 have 0.2358 moles of Na+ ions. Hence, total moles of Na2CO3 is 0.4716 moles
Number of ions present = 6.022 × 1023 × 0.4716 mol = 2.84 × 1023ions
The molar mass of sodium carbonate is 106 g/mol. One mole of sodium carbonate gives 2 Na+ ions. Thus number of moles in 25 g of sodium carbonate is 0.47 moles.
What is sodium ions?Sodium ion Na+ is formed by the lose of one electron from the sodium metal. Sodium has one valence electron and it will reacts with other atoms by donating this electron and gaining a positive charge.
The molecular formula of sodium carbonate is Na₂CO₃. Therefore, one mole of sodium carbonate will give two moles of Na+ ions. The molar mass of sodium carbonate is 106 g/mol.
The number of moles of 25 g of sodium carbonate is calculated as follows:
Number of moles = 25 /106
= 0.235 moles.
It is clear that one mole of Na₂CO₃ gives two moles of sodium ions.Then, number of moles of sodium ions given by 0.235 moles of sodium carbonate is calculated as follows:
number of moles of Na+ = 0.235 × 2
= 0.47 moles
Hence, the number of moles of Na+ ions produced by 25g of sodium carbonate is 0.47 moles.
To find more about sodium carbonate, refer the link below:
https://brainly.com/question/28901831
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Which subatomic particles are found in the nucleus of an oxygen atom?
F Neutrons and Electrons
G Electrons and Protons
H Protons and Neutrons
J Protons, Neutrons, and Electrons
Answers
Answer:
the answer is protons and neutrons
Explanation:because
The subatomic particles are found in the nucleus of an oxygen atom are Protons and Neutrons. Thus, option H is correct.
What are subatomic particles?An electron is defined as a subatomic particle which is charged negatively either bound to an atom or not it means free. The nucleus of an atom is made up of electron, proton and neutron. The electron is a basic particle and electron is not made of anything.
The nature of electron is free it means they are present freely in nature and consist of an atom.The main function of electron is that they play the role of negatively- charged component of an atom.
The electrons are primary source of current conducting and electrons number as well as atomic number of an element is always same or equal. There is no size of electron but the mass of electron is 9×10^-31.
Therefore,The subatomic particles are found in the nucleus of an oxygen atom are Protons and Neutrons. Thus, option H is correct.
Learn more about subatomic particles here:
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1. H2SO4, sulfuric acid, contains three different types of atoms: hydrogen (H), sulfur (S), and oxygen (O). Each of these atoms represents a different . Since the three types are combined in a fixed ratio, this means that H2SO4 is a(n) molecule. 2. The smallest unit of matter that retain all of the physical properties of that type of matter is a(n) atom. 3. is anything that occupies space and/or has any substance. 4. If two or more atoms are bonded together, they form a(n) . 5. The scientific study of matter is called . 6. Within a plant, water (H2O) and carbon dioxide (CO2) can be combined (using the energy of sunlight) to produce glucose (C6H12O6) and oxygen (O2). If you were to write out this chemical reaction, water and carbon dioxide are each an example of a(n) while glucose and
Answers
Answer:
The blanks can be completed with words in the following sequence
1) elements
compound
2) atom
3) matter
4) compound
5) chemistry
6) reactants
product
Explanation:
In H2SO4, atoms of hydrogen, sulphur and oxygen represent different elements that are combined to form the compound.
The smallest indivisible unit of matter that still retains all the properties of matter is an atom. Matter is anything that has weight and occupy space.
Atoms combine in fixed ratios to form compounds. Chemistry studies matter scientifically and pays specific attention to the changes that matter undergoes.
Considering the reaction of photosynthesis, water and carbon dioxide combine to give glucose so the water and carbon dioxide are reactants while the glucose is the product of the reaction.
1. How many atoms of oxygen are represented in 3Ba(ClO3)2? (3 points)
3
6
9
18
Answers
Answer:
6
Explanation: