Answer:
Explanation:
The answer is B heavy nucleus splits into two smaller nuclei
Compounds that are chemically stable break down quickly.
True or False
Answer:
False
Explanation:
chemically stable compounds are stable so they do not break down quickly.
Answer:
I think False
As
stable compounds are of lower energy and have a balanced charge. ... So, very loosely, a compound could be said to be stable when it is low in potential energy, has a neutral or spread out charge, and can be used in regular conditions.
THAT'S WHY THEY DO NOT BREAK DOWN EASILY
if wrong correct me pls
have a nice day
#Captainpower
Iron is the most commonly used metal iron is extracted in a blast fumace from iron
oxide using carbon monoxide.
Fe:03
Fe 300
A sample of the ore haematite contains 70% iron oxide.
Calculate the amount of iron oxide in 2000 tonnes of haematite.
tonnes
Amount of iron oxide =
Answer:
70/100 X 2000 = 1400 tonnes of iron.
Explanation:
take the percentage of iron oxide and divide with overall amount of iron oxide using 2000 tonnes of hematite ore. 1400 tonnes of iron will be produced. this is not the percentage. if you want the percentage of iron produced just divide.
70/100 x 200 = 1400 tonnes of iron
percentage of iron produced = 70/1400 x 100 = 5 % of iron produced from 70% of iron oxide in 2000 tones of hematite ore
Which of the following examples best illustrates an effect of pollution on an ecosystem?
Choose 1 answer:
Choose 1 answer:
(Choice A)
A
Cutting down a forest for lumber removes available habitat for local animals, forcing them to move or compete for remaining resources.
(Choice B)
B
The number of wolves in an area declines due to urbanization and hunting, allowing elk and deer populations to grow rapidly.
(Choice C)
C
Nitrogen and phosphorus runoff from agricultural fields creates harmful algal blooms and dead zones in the ocean.
What volume will 2.0 moles of nitrogen occupy at 0.947 atm and 20.0 °C?
Answer:
V = 50.77 L
Explanation:
Given that,
No. of moles, n = 2
Pressure, P = 0.947 atm
Temperature, T = 20°C = 293 K
We need to find the volume occupies by Nitrogen gas. Using gas law,
[tex]PV=nRT\\\\V=\dfrac{nRT}{P}[/tex]
Where
R is gas constant
Put all the values,
[tex]V=\dfrac{2\times 0.08205\times 293}{0.947}\\\\V=50.77\ L[/tex]
So, the volume occupied by the gas is equal to 50.77 L.
Which molecule is a stereoisomer of trans-2-pentene?
Answer:
cis-2-pentene
Explanation : The stereoisomers are the compound which differs only in the spatial arrangement of the atoms across the stereogenic centers.
There are mainly two forms of stereoisomers cis and trans. Cis-isomers are those where the two bulky or functional groups are arranged on the same side across the stereogenic center; whereas, in trans-isomers the two bulky groups or functional groups are arranged in the opposite sides of stereogenic center.
When an object is pushed by a force and moves in the direction of the force, work is done on the object. The amount of work equals the force times the distance (W = Fd). A small particle is pushed by a force of 2.6 × 10-4 newtons over a distance of 3.7 × 10-3 meters. How much work was done on the particle? Express the answer to the correct number of significant figures and in proper scientific notation. The force did × 10 newton-meters of work on the particle.
Explanation:
[tex]workdone = force \times distance \\ W = (2.6 \times {10}^{ - 4} ) \times (3.7 \times {10}^{ - 3} ) \\ W = 9.62 \times {10}^{ - 7} \: joules[/tex]
The formula W = Fd, where W is the amount of work done, F is the force, and d is the distance, is used to determine how much work is done on a particle when it is pushed by a force. The force and distance in this issue are 2.6 10-4 newtons and 3.7 10-3 metres, respectively.
What is the way to calculate the work done ?We add the force and distance together to determine the work done: 9.62 10-7 newton-meters are equal to W = 2.6 10-4 newtons x 3.7 10-3 metres. The response must be presented using the appropriate scientific notation and significant numbers.
The solution should include three significant figures, just like the numbers in the problem, which have three. Therefore, 9.62 10-7 newton-meters is the correct answer.
This response uses appropriate scientific language.notation because the exponent is a negative power of 10 and the coefficient ranges from 1 to 10. In conclusion, the particle underwent work from the force of 9.62 10-7 newton-meters. This response uses the appropriate scientific notation and the correct number of significant digits.
Learn more about force at:
https://brainly.com/question/13191643
#SPJ3
I’m kinda stuck with this part of the paper
Answer:
oK so pay pattention to the fractions
Explanation:
What distinguishes molecular solids from other types of crystalline solids?
A) In contrast to alternate crystal lattices, the molecular solids form strong, ionicly-bonded structures of atoms and ions.
B) Unlike other crystalline structures, molecular solids are formed form atoms that share their electrons among all bonded atoms.
C) Molecular solids are composed of individual, covalently-bonded molecules attracted to each other through intermolecular forces.
D) Alternate lattice structures do not consist of oppositely charged diatomic ions that are attracted through electrostatic attraction.
Answer:
C
Explanation:
Usa test prep.
How many hydrogens are in 4H207?
What is an example of a community protecting Earth's resources? (2 points)
a
Cattle ranchers have cut down trees to create space for their cattle.
b
A town has started getting their vegetables transported from far away.
c
A mine has burned down a forest to create room for buildings.
d
A town has started a new recycling and composting program.
D. A town has started a new recycling and composting program
Answer:
D A town has started a new recycling and composting program
Explanation:
PLEASE HELPP MEEE ASAPPPPP
Answer:
2. Solute
3. Suspension
4. Colloid
5. Compound
Explanation:
Please Help ASAP!!!!!!!!!!!!!!!!!!
Answer:
Using the drop down Menu
Proton : Possessing a Charge of +1. It is found in the Nucleus and has a Mass of "A"
Neutron; Possesses a charge of 0. It is situated in the Nucleus and Has a Mass of "B"
Electron: Has a charge of -1. Found in the Orbitals of the atom and has a mass of "C"
Which of the clouds shown would indicate a possible future rain storm?
A) A
B) B
C) C
D) D
Be + Cl₃N -----> Cl₂ + Be₃N₂ *
Answer:
3Be + 2NCl₃ ⟶ 3Cl₂ + Be₃N₂
-TheUnknownScientist
We can find many online videos in which a marshmallow is exploded by placing it in a microwave oven and turning the oven on. Why is this not an illustration of Boyle's Law?
Answer:
This illustrates Boyle's law, which states that a gas expands if the pressure decreases while all other variables are kept constant. When heating a marshmallow in a microwave, some moisture inside the marshmallow evaporates, adding gas to the bubbles. In addition, a warmer gas pushes outward with more force.
Explanation:
Find A in degrees. Round to the
nearest tenth.
С
a = 7
b
b = 4
a
C = 8
B
A
С
A = [?]
Answer:
61 degrees
Explanation:
Why were scientists unsure about the last common ancestor between apes and humans?
Answer:
Scientists were unsure about the last common ancestor between apes and humans because fossils are so scarce, researchers do not know what the last common ancestors of living apes and humans looked like or where they originated.
Explanation:
If the student added larger drops to the pan, the
what?of the waves would increase.
Answer:
this makes no sense you arent gonna get help
Explanation:
Answer:
Amplitude
Explanation:
Im taking this test rn lol
1. A cupcake show makes and delivers specialized cupcakes. It will cost someone $30 for
10 cupcakes and $67.50 for 25 cupcakes. This total includes the cost per cupcake and
delivery fee. How much does each cupcake cost? (enter your answer with just the number,
no $ sign)
Answer:
2.5
Explanation:
The given costs for the purchase and delivery of the cupcakes are;
The cost of 10 cupcakes and the delivery fee = $30
The cost of 25 cupcakes and the delivery fee = $67.50
Let 'c' represent the fixed cost of delivery of the cup cakes, and let 'x' represent the cost of each cup cake, we have;
30 = 10·x + c...(1)
67.50 = 25·x + c...(2)
Subtracting equation (1) from equation (2) gives;
67.50 - 30 = 37.50 = 25·x - 10·x + c - c = 15·x
∴ x = 37.50/15 = 2.5
The cost of each cupcake, x = 2.5
(∴ The delivery fee = 30 - 10 × 2.5 = 5)
The cost of each cupcake is 2.5.
Li2O + MgCl2 → 2 LiCl + MgO
What type of reaction is going on in this equation.
Answer:
water
Explanation:
Which of the following is the weakest type of intermolecular
force?
o Hydrogen bonding
o Induced dipole
London dispersion
o Dipole-dipole
Answer:
London Dispersion
A certain metal M forms a soluble sulfate salt M2SO4. Suppose the left half cell of a galvanic cell apparatus is filled with a 50.0mM solution of M2SO4 and the right half cell with a 5.00M solution of the same substance. Electrodes made of M are dipped into both solutions and a voltmeter is connected between them. The temperature of the apparatus is held constant at 20.0°C.
Which electrode will be positive?
Left
Right
Answer:
Right
Explanation:
The given parameters are;
The soluble sulfate formed by the metal, M = M₂SO₄
In the galvanic cell formed by the metal M, we have;
The concentration of M₂SO₄ in the left half cell = 50.0 mM = 0.05 M
The concentration of M₂SO₄ in the right half cell = 5.00 M
In the galvanic cell, the metal 'M' will be dissolved into the solution with lower concentration as M²⁺ which is the left half cell, making the cell negative and the solution more concentrated
In the right half cell, the metal 'M²⁺' in the solution will be plated unto the electrode making the solution less concentrated and the electrode in the right half cell will be the positive electrode
Therefore;
The electrode which will be positive is the electrode in the right half cell.
Help!!! For chemistry
Answer:
2KMnO₄ + 4SO₂ + H₂ ⟶ K₂SO₄ + 2MnSO₄ + H₂SO₄
Explanation:
KMnO₄ + SO₂ + H₂ ⟶ K₂SO₄ + MnSO₄ + H₂SO₄
Balanced Equation
2KMnO₄ + 4SO₂ + H₂ ⟶ K₂SO₄ + 2MnSO₄ + H₂SO₄
-TheUnknownScientist
How many moles of NH3 can be made from 0.93 moles N2?
0.62 mol NH3
1.86 mol NH3
0.93 mol NH3
0.47 mol NH3
Escribe la configuración electrónica de los elementos que poseen, ¿de qué elementos se trata?: 15 electrones 27 electrones 56 electrones 49 electrones
Answer:
15 electrones: 1S²2S²2P⁶3S²3P³. Fósforo
27 electrones: 1S²2S²2P⁶3S²3P⁶4S²3d⁷ - Cobalto.
56 electrones: 1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p⁶5s²4d¹⁰5p⁶6s² - Bario
49 electrones: 1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p⁶5s²4d¹⁰5p¹ - Indio
Explanation:
Para llenar los orbitales electrónicos de los distintos átomos debemos hacer uso de la regla de llenado electrónico de Aufbau. Por ejemplo, para el átomo con 15 electrones, la configuración electrónica es:
1S²2S²2P⁶3S²3P³. 2+2+6+2+3 = 15 electrones
Si elemento es neutro, tiene 15 protones. Es decir, es el fósforo, P.
27 electrones:
1S²2S²2P⁶3S²3P⁶4S²3d⁷ - Cobalto.
56 electrones:
1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p⁶5s²4d¹⁰5p⁶6s² - Bario
49 electrones:
1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p⁶5s²4d¹⁰5p¹ - Indio
Which physical property causes cork to float on top of water?
A 2.50 L balloon is filled with water at 2.27 atm. If the balloon is squeezed into a 0.80 L beaker and does NOT burst, what is the pressure of water in the balloon?
Answer:
[tex]P_2=7.09atm[/tex]
Explanation:
Hello!
In this case, given the change in volume and pressure of the gas, it is possible for us to recall the Boyle's law as way to understand the inversely proportional relationship between pressure and volume:
[tex]P_1V_1=P_2V_2[/tex]
Thus, when solving for the final pressure, P2, given the initial pressure and volume and the final volume, we obtain:
[tex]P_2=\frac{P_1V_1}{V_2}\\\\P_2=\frac{2.27atm*2.50L}{0.80L}\\\\P_2=7.09atm[/tex]
Best regards!
Answer:
7.1 atm
Using Boyle’s law, P1 V1=P2 V2.
what are the products in a chemical reaction?
Answer:
it's c trust me
Explanation:
c cause it's c
Answer:
d
Explanation:
i dont know
makes the most sense to me
help me with my bell work
Answer:
1) It gets slower the farther out they are.
2) The farther out you are from the sun the less gravitational pull you have, which makes it go slower as it orbits.
3) Gravity ;) :)
Explanation:
Hope this helps! Plz mark as brainliest! :)
1.) The four inner planets have slower orbits and the four outer planets have faster orbits.
2.) The closer a planet is to the Sun, the stronger the Sun's gravitational pull on it, and the faster the planet moves.
3.) Gravity
A surfact that DOES NOT allow water to pass through.
Answer:
impermeable
Explanation:
Answer:
aquifer?
Explanation: