Answer:
10 electrons
Explanation:
The d sublevel has 5 orbitals, so can contain 10 electrons max. And the 4 sublevel has 7 orbitals, so can contain 14 electrons max. In the picture below, the orbitals are represented by the boxes. You can put two electrons in each box.
Answer:
10
Explanation:
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There is an equal number of protons and __________ in a neutral atom.
A. electrons
B. neutrons
C. protons
D. elements.
the answer is electrons
What is the correct name for H3AsO3
Answer:
arsenous acid
Explanation:
Explain the horizontal periodic trend
Answer:
Trends on the Periodic Table have a vertical component and a horizontal component. Vertical trend: as more “shells” are added to the electron cloud, it expands. Horizontal trend: if atoms have the same number of “shells”, atoms with more protons will draw the electron cloud in tighter.
Explanation:
How many moles are in 5.32 x 1020 atoms
of copper?
What is the answer but in numbers ?
Answer is 1.41 x 10 with the exponent of 24, atoms
Explanation : Look at the picture i attached.
What happens when the number of electrons and protons inside of an atom are Not equel?
Hello, It's me Moriah Elizabeth!
Answer:
When the number of electrons does not equal the number of protons, the atom is ionized.
explain how to find the mass of water. show your calculations as well
Answer:
You can find the mass of water by multiplying the density of water by its volume.
mass = Density x volume
Explanation:
It is very easy to find the mass of water once you know the formula of density. "Density" refers to mass per unit volume.
Density (ρ) = [tex]\frac{mass}{volume}[/tex]
Therefore, mass = ρ x volume
The density of water is 1 kg/L.
For example, if the volume of water is 500 ml, then you can get its mass by multiplying 500 ml by 1 kg/L.
Let's convert 500 ml to Liter first.
500 ml x [tex]\frac{1 L}{1,000 ml}[/tex] = 0.5 L
Now, let's compute.
mass = ρ x volume
mass = 1 kg/L x 0.5L
mass = 0.5 kg
The mass of a 500-ml water is 0.5 kg.
What is the momentum of a bird with a mass of 2 kg flying at 9 m/s? *
Answer:
18 kg.m/sExplanation:
The momentum of an object can be found by using the formula
momentum = mass × velocity
From the question we have
momentum = 2 × 9
We have the final answer as
18 kg.m/sHope this helps you
TOPICAL ASSINMENT 2
1. If 25cm' of O.IM H,SO, solution neutralised a solution containing 1.06g anhydrous sodium carbonate in
250cm. of solution, calculate the molarity and the volume of the sodium carbonate solution used. (3mks)
The molarity = 0.04 M
The volume = 6.25 ml
Further explanationGiven
25cm³ of 0.1 M H₂SO₄
1.06g Na₂CO₃ in 250cm³ of solution
Required
the molarity and the volume of Na₂CO₃
Solution
Molarity of Na₂CO₃ :
[tex]\tt \dfrac{1.06/106~mol}{0.25~L}=0.04~M[/tex]
Reaction
H₂SO₄ + Na₂CO₃ ⇒Na₂SO₄ + H₂O + CO₂
mol H₂SO₄ = 25 x 0.1 = 0.25 mlmol= 2.5 x 10⁻⁴ moles of Na₂CO₃
The volume of solution used :
[tex]\tt V=\dfrac{n}{M}=\dfrac{2.5.10^{-4}}{0.04}=6.25.10^{-3}~L=6.25~ml[/tex]
SHOW WORK
How many drops are in a 2-L bottle of Pepsi?
Answer:
The number of drops depends upon the size of the drops. So, basically, 1 ml has a drops of 20
so 2000 mo will have a 40k drops
5(a) Consider the following schemes
Petroleum
>petroleum fractions
Higher petroleum fractions 1 , petrol + x
X + Y MI >CH,CICH,CI
nX"V (CH2 - CH2 - CH2-CH2)n
(i) State the type of reaction involved in I to IV
Answer:
is number 1
Explanation:
cause i know
All matter is involved in motion of some kind. True or false
Answer:
true
Explanation: all matter down to the molecular or even atomic level has a constant vibration and movement. The only time that any matter could stop moving would be at absolute zero.
What is different about the atomic structure of the oxygen isotopes?
Answer:
Each isotope of oxygen contains 8 protons, but differs in the number of neutrons. An isotope number is a shorthand representation of its mass. Because protons and neutrons are roughly equal in mass, an isotope's number is equal to the sum of its protons and neutrons.
Explanation:
Isotopes are atoms of the same element that have different numbers of neutrons but the same number of protons and electrons. The difference in the number of neutrons between the various isotopes of an element means that the various isotopes have different masses.
Given the unbalanced equation showing the reactants and product of a reaction occurring at 298 K and 100. kPa:
____P4(s) + ____Cl2(g) ____PCl3(l) + energy
Balance the equation below for the reaction, using the smallest whole number coefficients.
____P4(s) + ____Cl2(g) ____PCl3(l) + energy
Balanced equation
P4(s) +6Cl2(g) ⇒4PCl3(l) + energy
Further explanationGiven
Reaction(unbalnced)
P4(s) +Cl2(g) ⇒PCl3(l) + energy
Required
Balanced equation
Solution
Give a coefficientaP4(s) +bCl2(g) ⇒PCl3(l) + energy
Make an equationP, left=4a, right=1⇒4a=1⇒a=1/4
Cl, left=2b, right=3⇒2b=3⇒b=3/2
The equation becomes:
1/4P4(s) +3/2Cl2(g) ⇒PCl3(l) + energy x 4
P4(s) +6Cl2(g) ⇒4PCl3(l) + energy
What does bananas batteries and people have in common
For the reaction C+2H 2 —->CH 4 calculate the percent yield if 98 g of methane is produced when 100. g of carbon reacts with an excess of hydrogen?
The percent yield : 73.5%
Further explanationGiven
Reaction
C+2H₂⇒CH₄
Required
The percent yield
Solution
mol of Carbon(as a limiting reactant) :
[tex]\tt \dfrac{100}{12}=8.3[/tex]
mol CH₄ based on C, and from equation mol ratio C : CH₄, so mol CH₄ = 8.3
Mass of Methane(theoretical yield) :
[tex]\tt mass=mol\times MW\\\\mass=8.3\times 16=133.3~g[/tex]
[tex]\tt \%~yield=\dfrac{actual}{theoretical}\times 100\%\\\\\%yield=\dfrac{98}{133.3}\times 100\%=73.5\%[/tex]
What types of radiation cause the parent isotope to change into a different element?
Answer:
Beta decay is most common in elements with a high neutron to proton ratio. Gamma decay follows the form: In gamma emission, neither the atomic number or the mass number is changed. A high energy gamma ray is given off when the parent isotope falls into a lower energy state.
Explanation:
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PLEASE HELP THIS IS OVER DUE AND I NEED TO GET IT DONE IM REALLY BAD AT CHEMISTRY
In which state of matter (Solid, liquid, or a gas) do atoms/particles move the fastest?
Answer:
GasExplanation:
I hope it helps ❤❤❤.......
Answer:
Gas
Explanation:
Solid= Particles are really tight (Example: Ice Cube) Has a fixed shape
Liquid= Particles flow freely but is of constant volume.(Liquid fills it's container. Example: Water) No fixed shape
Gas= Particles move freely can fill its container has NO FIXED SHAPE or NO FIXED VOLUME(Example: Oxygen) Particels move FASTEST
A family consumes 2.5 gallons of milk per week. How many liters of milk do they need to buy for one month? (Assume there are exactly 4 weeks in 1 month) SHOW WORK
Answer:
37.85 liters
Explanation:
they need 10 gallons for a month (2.5*4)
after that, convert gallons to liters (conversion to liters= 3.785)
10*3.7585= 37.85
what is a substrate
Answer:
a substrate is surface or material on or from an organism lives, grows, or obtains its nourishment.
Explanation:
Hey I hope this helps.....
please help me I will give brainesty if your right
Answer:
Sunlight
Explanation:
My science teacher has told us that plants need the sun to photosynthesis. And even though their is a lot of sun, they need to compete for it still.
What is the relationship between the circulatory and respiratory systems?
A. They work together to store the waste that blood collects from the body.
B. The circulatory system provides oxygen that the respiratory system uses to fill the lungs
C. The respiratory system provides blood that the circulatory system uses to transport nutrients.
D. They work together to supply oxygen to tissues and rid the body of carbon dioxide
Answer:
The circulatory and respiratory systems work together to circulate blood and oxygen throughout the body. Air moves in and out of the lungs through the trachea, bronchi, and bronchioles. Blood moves in and out of the lungs through the pulmonary arteries and veins that connect to the heart
Explanation:
This should help you out
An atom has 38 protons and 42 neutrons it is ?
Answer:
The answer is, Strontium
Answer:
Name Molybdenum
Atomic Mass 95.94 atomic mass units
Number of Protons 42
Number of Neutrons 54
Number of Electrons 42
Explanation:
Replication, Transcription, and Translation Chart
Please answer
DNA Replication:
1。Template Strand: Start with this nucleotide chain.
TACCCTTGAATAAAAAATCTCTGTTTGGTCGGTATTGTTGAAATC
2。Complementary DNA Strand: Write directly below template strand.
Transcription:
3。mRNA Strand: Write the complementary mRNA strand from the DNA template strand (#1).
Translation:
4。Anticodon: Write the anticodon sequence to match the mRNA strand (#3).
5。Protein Synthesis: Write the mRNA sequence that is complementary to the anticodons. Meaning the opposite code of the anticodons (#4).
6。Amino Acid Sequence: Create the amino acid sequence from protein synthesis using 3 letter abbreviation for amino acids (#5).
I can help with 1, 2, 3, and 4... 5 and 6, I don't understand.
Template sequence : TACCCTTGAATAAAAAATCTCTGTTTGGTCGGTATTGTTGAAATC
Complement sequence : ATGGGAACTTATTTTTTAGTGTCAAACCAGCCATAACAACTTTAG
mRNA sequence : AUGGGAACUUAUUUUUUAGAGACAAACCAGCCAUAACAACUUUAG
Anticodon sequence : AUG-GGA-ACU-UAU-UUU-UUA-GAG-ACA-AAC-CAG-CCA-UAA-CAA-CUU-UAG
(not 6) Protein synthesis : START-Gly-Thr-Tyr-Phe-Leu-Glu-Thr-Asn-Gin-Pro-Stop
atoms or helium nickel would represent _____
Answer:
they represent their own atoms
Answer:
Elements
Explanation:
Why do scientists often use bacteria to produce medicines?
Answer:
Bbbbb eg2020
Explanation:
Bbbbb
_____has particles with the greatest average kinetic energy
a
Ice water
b
Hot water
c
Warm water
d
Room temperature water
Answer:
c warm water
Explanation:
Kinetic energy is related to temperature. The molecules in a glass of warm water have more kinetic energy (they move faster – see Racing Molecules) than the molecules in a glass of cold water. The temperature of a substance is the average* amount of kinetic energy its molecules have.
Answer:
hot water
Explanation:
Which statement best describes how people within a country may be different? O People know that each region has the same traditions and culture. O People from different regions have different cultures, values and languages. O People believe that people from each region are equal to one another. O People think that mountainous regions are more important than others.
Answer:
its B People from different regions have different cultures, values and languages.
Explanation:
i just took the assignment
PLEASE ANSWER FAST DUE IN 2 MINUTES
The gas released by animal into the environment is ______
Answer:
Carbon dioxide gas
Explanation:
When an animal breathes, it takes in oxygen gas and releases carbon dioxide gas into the atmosphere.
What is the total pressure in units of kPa in a 7.85 L container that contains 4.45 moles of N2 and 2.45 moles of O2 at a temperature of 307 K?
Answer:
Total pressure = 22.15 atm
Explanation:
Given data:
Total pressure = ?
Volume of container = 7.85 L
Number of moles of N₂ = 4.45 mol
Number of moles of O₂ = 2.45 mol
Temperature = 307 K
Solution:
Pressure of N₂:
PV = nRT
P = nRT/V
P = 4.45 mol ×0.0821 atm.L/mol.K ×307K / 7.85L
P = 112.16 atm.L/7.85 L
P = 14.28 atm
Pressure of O₂:
PV = nRT
P = nRT/V
P = 2.45 mol ×0.0821 atm.L/mol.K ×307K / 7.85L
P = 61.75 atm.L/7.85 L
P = 7.87 atm
Total pressure = P(N₂) + P(O₂)
Total pressure = P( 14.28 atm) + P( 7.87 atm)
Total pressure = 22.15 atm
if an unknown gas has one third the root mean squarevspeed of H2 at 300 K, what is the molar mass of the gas?
The molar mass of the gas : 18 x 10⁻³ kg/mol
Further explanationGiven
An unknown gas has one third the root mean square speed of H2 at 300 K
Required
the molar mass of the gas
Solution
Average velocities of gases can be expressed as root-mean-square (V rms)
[tex]\large {\boxed {\bold {v_ {rms} = \sqrt {\dfrac {3RT} {Mm}}}}[/tex]
T = temperature, Mm = molar mass of the gas particles , kg/mol
R = gas constant 8,314 J / mol K
v rms An unknown gas = 1/3 v rms H₂
v rms H₂ :
[tex]\tt v_{rms}=\sqrt{\dfrac{3\times 8.314\times 300}{2.10^{-3}} }\\\\v_{rms}=1934.22[/tex]
V rms of unknown gas =
[tex]\tt \dfrac{1}{3}\times 1934.22=644.74[/tex]
[tex]\tt 644.74^2=\dfrac{3\times 8.314\times 300}{M_{gas}}\\\\M_{gas}=18\times 10^{-3}~kg/mol[/tex]