Explanation:
moles=mass÷molar mass
n=m÷Mr
6.0=14.6÷Mr
Mr=14.6÷6.0
Molar mass= 2.433
AYOO SMART PEOPLE I NEED HELP on number 6
Answer:
6.) mixture
8.) compound
Write the name for the IONIC compound that contains two aluminum atoms and three sulfur atoms. (Need help ASAP)
Which is a property of potassium (K)?
A. It is dull and brittle.
B. It is extremely reactive.
C. It is not reactive.
D. It is white and hard.
Answer:
B: It is extremely reactive
Explanation:
Potassium metal is also soft and white with a silvery lustre, has a low melting point, and is a good conductor of heat and electricity.
Answer: Properties, occurrence, and uses. Potassium metal is soft and white with a silvery lustre, has a low melting point, and is a good conductor of heat and electricity. Potassium imparts a lavender colour to a flame, and its vapour is green.
Explanation: hope it helps
All atoms of oxygen have the same mass number. True or False
Answer:
pretty sure it's false
Explanation:
hope this helps!
A remnant or trace of an organism from the past is called a
Answer:
a fossil
Explanation:
Answer:Fossil
Explanation:A remnant or trace of an organism of a past geologic age, such as a skeleton or leaf imprint, embedded, and preserved in the Earth's crust, usually in stratified rock.
Question 1
Review
Which laboratory equipment is correctly paired with the unit it measures?
Answer:
Cilindros graduados
Explanation:
Son una herramienta de medición primaria para el volumen de un líquido, y tiene varias marcas hacia arriba y hacia abajo a lo largo del contenedor con incrementos específicos. Los cilindros graduados vienen en muchos tamaños; entre más pequeños sean de diámetro, más específicas serán las mediciones de volumen. Al leer el volumen de un cilindro graduado, notarán que el líquido parece tener una muesca; el líquido alrededor de los bordes será más alto que el líquido en el centro, inclinándose hacia abajo como los lados de un trampolín cuando alguien está parado en el medio. Esto se llama el menisco. Alineen el punto más bajo del menisco con la marca más cercana, manteniendo el nivel del cilindro para leer correctamente el volumen.
Calculate the molar mass of NaNO3-
The role of an organism in its habitat
A. host
B. prey
C. niche
D. adaptation
Answer:
C. Niche
Explanation:
The role of an organism in it's habitat is it's niche.
Plss answer the question in the picture.
. The kidneys are _______________ to the liver.
a. Dorsal
b. Ventral
c. Medial
d. Superior
In a couplet one statement is _____ and one is ______
A. Agreeing and rejecting
B. Deciding and Acting
C. Informing and Agreeing
Answer: a
Explanation:
In a couplet one statement is agreeing and one is rejecting. Therefore, option A is correct.
What do you mean by couplet ?A couplet is two lines of poetry that follow each other, particularly two lines that rhyme and are the same length.
Heroic couplets are similar to elegiac couplets. Heroic couplets are also usually closed and have their own meaning. They are frequently used in English epics and narrative poems.
A couplet is a unit of two lines of poetry that use the same or similar meter, rhyme, or are separated from other lines by a double line break. Here are some more important facts about Couplets are not required to be separate stanzas.
Thus, option A is correct.
To learn more about the couplets, follow the link;
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Explain how to use the ATOMIC NUMBER and ATOMIC MASS, of any element to calculate the amount of neutrons located in the nucleus of a atom
Explanation:
Atomic Number :
It only explain number of protons and electrons in nuclous
Atomic Mass :
Atomic mass tell how much neutrons are present in atom.
Answer:
[tex]\underline{ \boxed{atomic \: number = atomic \: mass - neutron \: number}} \\ \underline{ \boxed{atomic \: mass = proton \: number + neutron \: number}} \\ \underline{ \boxed{neutron \: number = atomic \: mass - proton \: number}}[/tex]
Explanation:
[tex] \underline{ \boxed{1}} \\ ATOMIC \: NUMBER = (atomic \: mass \: number\: - neutron \: number \: )\\ (which \: is \: same \: as ) = \: \underline{ \boxed{proton \: number}}\\ \\ \underline{ \boxed{2}} \\ ATOMIC \: MASS = (proton \: number \: + neutron \:number) \\ (is \: same \: as ) = \: \underline{ \boxed{sum \: of \:atomic \: nuclear \: content}} \\ \\ \underline{ \boxed{3}} \\ neutrons = (atomic \: mass \: number - proton \: number) \\ [/tex]
5. Explain why both diet and regular soft drinks can
damage the enamel on the surface of teeth.
Answer:
diet soda has artificial sugar and regular soda has insane amounts of sugar
In _____ , materials move from an area of higher concentration to an area of lower concentration through a cell membrane.
1.selective permeability
2.active transport
3.passive transport
a sample of methane gas at a pressure of 0.727 atm and a temperature of 26.9 occupies a volume of 726 ml. if the gas is allowed to expand at constant temperature until its pressure is 0.412 atm, the volume of the gas sample will be _ mL
Answer:
1280L
Explanation:
Given parameters:
Initial pressure = 0.727atm
Temperature = 26.9°C
Initial volume = 726mL = 0.726L
New pressure = 0.412atm
Unknown:
New volume of the gas sample = ?
Solution:
To solve this problem, we apply boyles law;
P1V1 = P2V2
P and V are pressure and temperature
1 and 2 are initial and new state
0.727 x 0.726 = 0.412 x V2
V2 = 1.28mL = 1280L
Something that causes a response in an organism is called a(n) _____.
The force applied to a pulley is called
Answer:
the effort
Explanation:
:)
Please help I’ll give brainlist
Answer:
A or B they do it for different reasons.
Explanation:
If the [H+] of a solution is 6.8 x 10-9 mol/L the pH is
Answer:
8.2
Explanation:
To solve this problem;
The concentration of [H⁺] = 6.8 x 10⁻⁹mol/L
So, we need to convert this to pH:
pH = -log [H⁺]
So;
pH = -log 6.8 x 10⁻⁹ = 8.2
Brianna explains to Logan the role of plants in the carbon cycle. Choose the sentence(s) that she includes in her explanation. Select all that apply.
A.
Animals get carbon from plants.
B.
Plants take carbon from the soil.
C.
Photosynthesis uses carbon monoxide.
D.
Animals take carbon from the atmosphere.
E.
Plants take carbon from the atmosphere.
Answer:
E) Plants take carbon from the atmosphere
Explanation:
Plants are a vital part in keeping the air clean. They take in CO2, H2O, and sunlight to start processing photosynthesis. The carbon taken in by the plant still remains with it after it dies, thus, fossil fuels.
Answer:
e is correct
Explanation:
There can be four equivalent best resonance structures of
A.NO3
B.S032-
C.PO43
D.NO2
E.CIO3
There are four equivalent best resonance structures of (PO₄)₃ according to the concept of resonance.
What is resonance?
The phenomenon of resonance which is also called mesomerism is the ability of the molecules or ions to explain the bonding in them by the combination of several canonical structures.
It is an extension of Lewis structures to describe bonding in chemical species.The resonance structures also include the fractional charges present on the atom .They are capable of of depicting delocalized electrons which are unable to be depicted by single Lewis structure.
Molecules with extended pi system are well defined by resonance hybrids.It is a way of giving description of bonding in certain molecules.When there is passage of electrons through pi structures which are opposing ,resonance occurs.
Learn more about resonance,here:
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How many grams of H2O2 will be produced if 14.86-grams of water is reacted with excess oxygen? How many molecules of H2O2 were produced?
2H2O (l) + O2 (g) ® 2H2O2 (aq)
Answer:
4.99 ×10²³ molecules
Mass = 28.22 g
Explanation:
Given data:
Mass of H₂O₂ produced = ?
Mass of water react = 14.86 g
Number of molecules of H₂O₂ produced = ?
Solution:
Chemical equation:
2H₂O + O₂ → 2H₂O₂
Number of moles of water:
Number of moles = mass/molar mass
Number of moles = 14.86 g/ 18 g/mol
Number of moles = 0.83 mol
Now we will compare the moles of water and H₂O₂.
H₂O : H₂O₂
2 : 2
0.83 : 0.83
Mass of H₂O₂:
Mass = number of moles × molar mass
Mass = 0.83 mol × 34 g/mol
Mass = 28.22 g
Number of molecules:
1 mole = 6.022×10²³ molecules
0.83 mol × 6.022×10²³ molecules / 1 mol
4.99 ×10²³ molecules
This chemical equation represents a chemical reaction H2SO4 + 2LiOH Li2SO4 + 2H2O which two chemicals are the products of the chemical reaction shown?
Answer:
Lithium sulphate (Li₂SO₄) and water (H₂O
Explanation:
H₂SO₄ + 2LiOH —> Li₂SO₄ + 2H₂O
The equation represented above indicates a neutralization reaction.
A neutralization reaction is a reaction involving acid and base which result in the production of salt and water.
In the equation above,
Reactant:
H₂SO₄ (acid)
LiOH (base)
Product:
Li₂SO₄ (salt)
H₂O (water)
Thus, lithium sulphate (Li₂SO₄) and water (H₂O) are the products of the reaction
What is the product(s) of the reaction below?
2Al(s) + Fe2O3(s) ---> Al2O3(s) + 2Fe(s)
A. Solid aluminum oxide and solid iron
B. Solid aluminum
C. Saturated aluminum oxide and saturated iron
D. Iron(III) oxide and aluminum oxide
Answer:
A. Solid aluminum oxide and solid iron
Explanation:
The reaction equation is given as:
2Al + Fe₂O₃ → Al₂O₃ + 2Fe
The species on the left hand side are the reactants
Those on the right hand side of the expression are the products.
The products are:
Al₂O₃ and Fe
These are solid aluminum oxide and solid iron
Did Adam Jackson win by
Answer:
by a number
Explanation:
Answer:
Hm may you edit the question and put in the full question all it says is "Did Adam Jackson win by"
Explanation:
.
How does the number of molecules in 1 mol of oxygen compare with the number of molecules in 1 mol of nitrogen?
1 mol of oxygen has fewer molecules.
1 mol of oxygen has more molecules.
Each sample has the same number of molecules.
The molecules cannot be compared without knowing the mass.
Answer:
Each sample has the same number of molecules.
Explanation:
Just took the quiz on edge 2021
Taking into account the definition of Avogadro's number, each sample has the same number of molecules.
Avogadro's NumberAvogadro'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 applies to any substance.
This caseAvogadro's number applies to any substance. This means that the number of molecules in 1 mol of oxygen is equal to the number of molecules in 1 mol of nitrogen.
Finally, the correct answer is the third option: each sample has the same number of molecules.
Learn more about Avogadro's Number:
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Compounds that are ductile and excellent conductors of electricity have *
covalent bonds.
ionic bonds.
isotopic bonds.
metallic bonds.
Answer:
metallic bonds.
Explanation:
Generally, compounds that are ductile and excellent conductor of electricity have metallic bonds between them.
These compounds are usually metals.
Metallic bond join that atoms of metals and alloys together. The formation of this type of bond is favored by large atomic radius, low ionization energy and a large number of electrons in their valence shell. The physical properties of metals like ductility, malleability, electrical and thermal conductivity all results from metallic bonds.There are 2 grams of sulfur and 0.45 grams of copper. What is the
percent composition of coppper in the sample.
A. 18.3 %
B. 5.44 %
C. 81.6 %
D. 1.25%
Answer:
18.3%
Explanation:
Add the numbers together, and then take the number of grams of the substance, in this case copper, not coppper lol. divide the .45 by 2.45 to get 18.3
1.004 mol Arsenic is how many atoms?
Answer: [tex]6.047\times 10^{23}[/tex] atoms in 1.004 mol of arsenic
Explanation:
According to avogadro's law, 1 mole of every substance occupies 22.4 L at STP and contains avogadro's number [tex]6.023\times 10^{23}[/tex] of particles.
To calculate the atoms, we use the equation:
[tex]\text{Number of moles}=\frac{\text{Given atoms}}{\text {avogadro's number}}[/tex]
[tex]1.004=\frac{x}{6.023\times 10^{23}}[/tex]
[tex]x=1.004\times 6.023\times 10^{23}=6.047\times 10^{23}[/tex]
Thus there are [tex]6.047\times 10^{23}[/tex] atoms in 1.004 mol of arsenic
Explain, in your own words, what volumic mass is
plss helpp
Answer:
I think that volumic mass is like weight of an object, or like the space it takes up??
Explanation:
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