Answer:
10 m/s²Explanation:
The acceleration of an object given it's mass and the force acting on it can be found by using the formula
[tex]a = \frac{f}{m} \\ [/tex]
f is the force
m is the mass
From the question we have
[tex]a = \frac{120}{12} \\ [/tex]
We have the final answer as
10 m/s²Hope this helps you
*WILL GIVE A BRAINIEST & 15 POINTS TO THE CORRECT ANSWER*
When an electron falls back to its original shell, the electron will...
A.) absorb energy as it goes to the excited state
B.) absorb energy as it goes to the ground state
C.) release energy as it goes to the excited state
D.) release energy as it goes to the ground state
Answer: D
Explanation:
What is the formula for Iron (III) Bromate
Answer:
[tex]\boxed {\boxed {\sf FeBr_3}}[/tex]
Explanation:
We can assume that this is a neutral compound, meaning the charges of the ions are balanced.
We are given: Iron (III) Bromide.
We want to find the chemical formula.
First, find the symbols of the elements.
Fe: Iron Br: BromineNext, find the charges on the ions.
The Roman Numeral 3 in parentheses (III). This indicates the iron cation has a charge of +3.
We need to balance out the charge of +3 with the bromine. Bromine can have a charge of +5, +1, and -1. Since we already have a cation (positive ion), bromine must be an anion (negative ion). We also know the charge must be negative to balance out the compound.
But, the charge is only -1. That would still leave the compound unbalanced. Therefore, we must have 3 bromine atoms to balance out the iron. The 3 will become a subscript.
So, put all the information together and write the formula:
FeBr₃
A chemical formula lists the constituent elements of a compound together with the number of atoms in each element's smallest unit, such as a molecule or formula unit. Here the formula for Iron (III) Bromate is FeBr₃.
A compound's chemical composition is symbolically represented by its chemical formula. Chemical formulas reveal the elements that make up a compound's molecules as well as the ratio in which their atoms combine to create those molecules.
The sorts of atoms and their numbers in an element or compound are described by a chemical formula. Each element's atoms are denoted by one or two distinct letters. a collection of chemical symbols indicating the constituent elements and their corresponding ratios.
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What are two reasons that someone would want to become a scientist?
1 point
Your answer
Electromagnetic radiation at its maximum wavelength is _____.
A. Radio waves
B. Infrared
C. X rays
D. None of the above
Answer:
Option A) Radio waves.
Explanation:
Have a great day.
A gas-filled balloon having a volume of 1.00 L at 1.2 atm and 25°C is allowed to rise to the stratosphere (about 30 km above the surface of Earth), where the temperature and pressure are -23°C and 3.00 10-3 atm, respectively. Calculate the final volume of the balloon.
Answer: The final volume of the balloon is 335.6 L
Explanation:
To calculate the final volume of the balloon, we use the equation given by combined gas law:
[tex]\frac{P_1V_1}{T_1}=\frac{P_2V_2}{T_2}[/tex]
where,
[tex]P_1[/tex] = Initial pressure = 1.2 atm
[tex]P_2[/tex] = Final pressure = [tex]3.00\times 10^{-3}[/tex] atm
[tex]V_1[/tex] = Initial volume = 1.00 L
[tex]V_2[/tex] = Final volume = ?
[tex]T_1[/tex] = Initial temperature = [tex]25^oC=[25+273]=298K[/tex]
[tex]T_2[/tex] = Final temperature = [tex]-23^oC=[-23+273]=250K[/tex]
Putting values in above equation, we get:
[tex]\frac{1.2atm\times 1.00L}{298K}=\frac{3.00\times 10^{-3}atm\times V_2}{250K}\\\\V_2=\frac{1.2\times 1.00\times 250}{298\times 3.00\times 10^{-3}}\\\\V_2=335.6L[/tex]
Hence, the final volume of the balloon is 335.6 L
What is the difference between elements and compounds? *
What goes in photosynthesis and what comes out of photosynthesis?
Answer:
Carbon dioxide goes in and oxogen comes out
P.S. Sunlight needed for this process to work
Explanation:
Similarities between sliding and fluid friction
What Group would this element be in?
write the name of the first twenty elements with their symbols and their atomic number
Answer:
1 Hydrogen H
2 Helium He
3 Lithium Li
4 Beryllium Be
5 Boron B
6 Carbon C
7 Nitrogen N
8 Oxygen O
9 Fluorine F
10 Neon Ne
11 Sodium Na
12 Magnesium Mg
13 Aluminium Al
14 Silicon Si
15 Phosphorus P
16 Sulfur S
17 Chlorine Cl
18 Argon Ar
19 Potassium K
20. calcium Ca
Answer:
h - hydrogen (1)
he - helium (2)
li - lithium (3)
be - beryllium (4)
b - boron (5)
c - carbon (6)
n - nitrogen (7)
o - oxygen (8)
f - fluorine (9)
ne - neon (10)
na - sodium (11)
mg - magnesium (12)
al- aluminium (13)
si - silicon (14)
p - phosphorus (15)
s - sulfur (16)
cl - chlorine (17)
ar - argon (18)
k - potassium (19)
ca - calcium (20)
Explain why the following structure is incorrect
Answer:
there is too many electrons around the shell
Explanation:
Based on the diagram shown, how many electrons does this atom have?
a.six
b.three
c.nine
d.one
Answer:
B. Three
Explanation:
The three dots that are surrounding the nucleus are electrons.
Explanation:
According to the diagram, the atom has 3 electrons.
Electronic configuration =
1s² 2s¹
Element = LithiumSymbol = LiPeriod = 2Group = 1 (Alkali metal) valency = 1Therefore,
Option B is correct✔
How many grams of CaCI2 (molar mass = 111 g/mol) are needed to prepare 100.mL of 0.100 M CI-(aq) ions?
a.) 0.555 g
b.) 1.11 g
c.) 2.22 g
d.) 5.55 g
I will mark as brainliest if you give the correct answer (brief explanation only, no worries)
Answer:
a
Explanation:
Because that is the answer
Plz help already late in turning it in
1. The thermal interconversion of the axial and equatorial substitutents of the chair conformation of cyclohexane is extremely slow because the two forms are separated by a relatively high activation energy barrier, 10.5 kcal/mol (3672 cm−1). With CN substituents, the equatorial form is only 0.24 kcal/mol (84 cm−1) lower in energy than the axial form. Show how you would determine the ratio between the concentrations of the equatorial and axial forms using the Boltzmann distribution.
Answer:
The ratio is [tex]0.67 : 1[/tex]
Explanation:
From the question we are told that
The activation energy separating the equatorial and the axial form is [tex]\Delta E = 0.24\ kcal/mol[/tex]
Generally according to the Boltzmann distribution , the relationship between concentration(in terms of number of molecule) of the equatorial form and the concentration of the axial form is mathematically represented as
[tex]N = N_o e^{-\frac{\Delta E }{RT} }[/tex]
Here [tex]N_o[/tex] is the number of molecule in equatorial form and N is the number of the molecules in the axial form.
R is the gas constant with value [tex]R = 1.987 *10^{-3} \ kcal\cdot mol^{-1} \cdot k^{-1}[/tex]
T is the temperature of the room with value [tex]T = 25^oC = 298 \ K[/tex]
So
[tex]\frac{N}{N_o} = e^{-\frac{0.24 }{1.987*10^{-3} * 298} }[/tex]
=> [tex]\frac{N}{N_o} = 0.67[/tex]
So the ratio of the concentration of equatorial form to the axial form is
[tex]0.67 : 1[/tex]
Can somebody that is good at science help me with these two questions? Please and thank you!
WHATS THE DIFFERENCE BETWEEN MASS AND WEIGHT WELPPPPP
Answer:
Mass is amount of matter. Weight is how that matter is affected by gravity.
Explanation:
Girls are usually completely physically mature by _____ years old.
A.
17
B.
19
C.
14
D.
21
Please select the best answer from the choices provided. Anyone know for EDGE
A
B
C
D
Answer:
a 17 bc it is how it works
Girls are usually completely physically mature by 18 years old.
What is puberty ?Puberty refers to the physical transformation of a child's body into an adult one capable of fertile reproduction.
In girls puberty generally attains before two years earlier than the boys. And the exact age of the girls to attain puberty is in between the age of 10 to 14.
Hence the age of girls to attain puberty is 14.
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Calculate the atomic mass of copper if copper-63 is 69.17% abundant and copper-65 is 30% abundant
Answer:List of isotopes
Nuclide Z Isotopic mass (Da)
Excitation energy
63Cu 29 62.9295975(6)
64Cu 29 63.9297642(6)
65Cu 29 64.9277895(7)
Explanation:
i need help ASAP plz its timed
Answer:
B) iron (Fe) im sure its iron
in which group on the periodic table does the atom pictures belong?
a) 4
b) 6
c) 16
d) 14
Answer: Group 14
Explanation:
It's a carbon atom with 4 valance electrons.
Fill in the blanks using terms from this unit.
Even though plants are rooted in the ground, they still move, exert
Blank Options
choose your answer...
and do
Blank Options
choose your answer...
.
Plant cells have very strong cell walls that allow
Blank Options
choose your answer...
to build up inside of the cell as water is absorbed. This pressure is called
Blank Options
choose your answer...
.
When turgor pressure is high enough in a cell, the cell walls become
Blank Options
choose your answer...
and As a result, the cell becomes rigid and the plant is able to stand
Blank Options
choose your answer...
and straight. When a plant does not get enough water, the turgor pressure inside of the cells
Blank Options
choose your answer...
.
A decrease in pushing against the cell wall causes the cells to lose their
Blank Options
choose your answer...
and This causes the plant to begin to droop, or
Blank Options
choose your answer...
.
When the wilted plant gets enough water, the cells will become rigid again, and the plant will stand firm and straight once again.
Answer:
Even though plants are rooted in the ground, they still move, exert force, and do work.
Plant cells have very strong cell walls that allow pressure to build up inside of the cell as water is absorbed. This pressure is called turgor.
When turgor pressure is high enough in a cell, the cell walls become firm and as a result, the cell becomes rigid and the plant is able to stand tall and straight.
When a plant does not get enough water, the turgor pressure inside of the cells decreases. A decrease in pressure pushing against the cell wall causes the cells to lose their shape and shrink. This causes the plant to begin to droop or wilt.
When the wilted plant gets enough water, the cells will become rigid again, and the plant will stand firm and straight once again.
Explanation:
What are three physical properties that could be used to identify gold?
Answer:
solid ,hard, not see through
Explanation:
Answer:
There are many properties out there, so three include bright yellow color, luster shine, and the maleability that determines the durability.
hhhhhhhhhheeelp !!! give 20 pintos
Answer:
you can run out of money the supplier could run out or they could stop making the renewable.
Explanation:
How many more valence electrons does this atom need to fulfill the Octet
Rule?
Answer:
In the valence shell, it should have 8 valence electrons.
Explanation:
Use what you know about endothermic and exothermic reactions to explain the differences in the graphs above
Answer:
yes I do
But I can't see the question very well
Explanation:
Isomers are molecules with the same molecular formula, but different structural formulae.
How many isomers are there in C7H16?
A.6
B.7
C.8
D.9
Answer:
D 9 is the answer
Explanation:
Hope it helps you
Please mark as brainliest answerWhich of the following does NOT agree with the Law of Conservation of Mass?
A. Mass can be destroyed.
B. Matter cannot be created.
C. Mass prior to chemical change is the same as mass after chemical change.
mass prior to chemival change is. thesame as mass after chemical change
How long would it take a current of 10A to deposit 6.36g of copper during the electrolysis of copper (ll) tetraoxosulphate VI solution. (Cu = 63.5,1F=96500C)
Cu2+ + 2e- Cu
It take 0.54 hours to deposit 6.36g of copper
Further explanationFaraday's Law I
"The mass of the substance formed at each electrode is proportional to the electric current flowing in the electrolysis
W = e.i.t / 96500
[tex]\tt \large {\boxed {\bold {W \: = \: \dfrac {e \times i \: x \: t} {96500}}}}[/tex]
e = equivalent = Ar / valence
i = current, A
t = time, s
W=6.36 g
e = 63.5 : 2 =31.75
i = 10 A
[tex]\tt t=\dfrac{W\times 96500}{e.i}\\\\t=\dfrac{6.36\times 96500}{31.75\times 10 }\\\\t=1933.04~s\approx 0.54~hours[/tex]
This reaction type occurs when different atoms in two different compounds trade places.
A) synthesis
B) decomposition
C) double replacement
D) single replacement
Double replacement is the reaction that typically occurs when different atoms in two different compounds trade places (Option C).
What is double-replacement?Double-replacement is a class of chemical reaction where two atoms can exchange their places to generate new combinations.
This type of chemical reaction (double-replacement reaction) is very common in nature.In conclusion, double replacement is the reaction that typically occurs when different atoms in two different compounds trade places (Option C).
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