Answer:
Friction
Explanation:
Friction: A force that opposes the motion of objects that touch as they move past each other.
Hope this Helps!
Answer:
Friction
Explanation:
A force that opposes the motion of objects that touch as they move past each other. Friction acts at the surface where objects are in contact.
3(so)4 how many sulfur atoms and oxygen
Answer:
There is 3 sulfur and 12 oxygen atoms
To see the number of atoms of an element in a given molecule we need to multiply stoichiometry to the number that is written on the foot of the element that is stoichiometry. Therefore, in 3(SO)[tex]_4[/tex], there are 3 sulfur atom and 12 atoms of oxygen.
What is atom?Atom is the smallest particle of any element, molecule or compound. Atom can not be further divided. Atoms contains nucleus in its center and electron that revolve around the atom in fixed orbit.
In the nucleus, proton and neutron are present. Electron has -1 charge while proton has +1 charge. Neutron is neutral that is it has no charge. So overall the charge of nucleus is due to only proton, not by neutron. In 3(SO)[tex]_4[/tex], there are 3 sulfur atom and 12 atoms of oxygen.
Therefore, in 3(SO)[tex]_4[/tex], there are 3 sulfur atom and 12 atoms of oxygen.
To know more about atom, here:
https://brainly.com/question/13518322
#SPJ2
HELP ME QUICK PLSSS
Answer: Yellow is electron, green is neutron, Red is proton
Explanation:
I learned this
HELP WILL GIVE BRAINLIEST!!
Rank the following items from LEAST to MOST momentum.
Fast car, Parked truck, Slow car, Fast baseball, Fast feather.
Answer:
This if from lowest to highest
Parked truckSlow car (depending on its actual speed)Fast feather (depending on how its falling)Fast baseballFast car (depends on it's mph)Explain what lattice energy is and how it affects
the properties of ionic compounds. Describe the
general properties of ionic compounds.
Answer:
Explanation:
Lattice energy is a way to measure the bond strength in ionic compounds. Ionic compounds tend to have high melting and boiling points. Ionic compounds tend to be hard. Ionic compounds have a range of solubilities.
Be sure to answer all parts. Show the overall reaction for formation of racemic 3−bromohexane from (E)−3−hexene by entering the structures of the products and reactants in the template provided. Part 1 out of 3 draw structure ... arr draw structure ... + draw structure ... (E)−3−hexene (S)−3−bromohexane (R)−3−bromohexane Racemic product = 50% (S) and 50% (R)
Answer:
See explanation
Explanation:
The mechanism for the formation of bromohexane from hexene has been clearly shown in the image attached to this answer.
Hexene is attacked by HBr and a carbocation is first formed as shown. The carbocation is flat and planar. it can be attacked on either face by the bromide ion.
Attack on either faces yields a racemic mixture of the R and S enantiomer as shown in the image.
You can use the mechanism shown to fill in the structures.
How does the body use energy from respiration
Answer:
Some of the energy released in respiration is used to make larger molecules from smaller ones, to enable muscles to contract and to keep temperature steady. Some of the energy released in respiration in plants is used to make amino acids and proteins. c Food provides the amino acids needed to make body proteins.
Explanation:
Describe 1 way process or system that transfers heat by convection. Be specific in details
What determines the number of protons in an element?
A steel cylinder for scuba diving contains 11.1 L of compressed air. The pressure inside the cylinder is
204 atm at a temperature of 24°C.
Calculate the number of moles of air in the cylinder.
Write your answer using three significant figures.
mol air
Answer:
9.28moles
Explanation:
Given parameters:
volume = 11.1L
pressure = 204atm
temperature = 24°C = 24 + 273 = 297K
Unknown:
Number of moles of air in the cylinder = ?
Solution:
To solve this problem, we apply the ideal gas equation;
PV = nRT
P is the pressure
V is the volume
n is the number of moles
R is the gas constant = 0.082atmdm³mol⁻¹K⁻¹
T is the temperature
Now insert the parameters and find n;
204 x 11.1 = n x 0.082 x 297
226.4 = 24.4n
n = 9.28moles
The number of moles of air in the cylinder is 92.98 moles
From the following parameters given, we are to determine the number of moles of air in the cylinder.
Given that:
The volume of the steel cylinder = 11.1 LThe pressure inside the cylinder = 204 atmThe temperature inside the cylinder = 24°CThe number of moles of air can be determined by using the relation for the ideal gas equation which can be expressed as:
PV = nRTwhere
n = number of molesMaking (n) the subject of the formula:
[tex]\mathbf{n = \dfrac{PV}{RT}}[/tex]
[tex]\mathbf{n = \dfrac{204 \ atm \times 11.1 L}{0.082 \ L .atm/mol .K \times 297 \ K}}[/tex]
n = 92.98 moles
Learn more about the ideal gas equation here:
https://brainly.com/question/15815713?referrer=searchResults
A 15.0 L tank of gas contained at a high pressure of 8.20 • 10^4 torr. The tank is opened and the gas expands into an empty chamber with a volume of 600•10^4 L. Calculate the new pressure of the gas
Answer:
P₂ = 0.205torr
Explanation:
Boyle's law relates the pressure and volume of a gas under two different conditions. The equation is:
P₁V₁ = P₂V₂
Where P is pressure and V volume of of 1, initial conditions and 2, final conditions.
P₂ is our incognite
Replacing:
P₁V₁ = P₂V₂
8.20x10⁴torr*15.0L = P₂*600x10⁴L
P₂ = 0.205torr
Please help!
An astronaut orbits planet X in his spaceship. To remain in orbit at 675 km above the planet's center, he maintains a speed of 76 m/s. What is the
mass of planet X? Note: the constant of universal gravity (G) equals 6.674 X 10 ^-11 N m^2/kg^2.
A. 7.7 x 10^14 kg
B. 5.8 x 10^19 kg
C. 7.7 x 10^17 kg
D. 5.8 x 10^16 kg
Answer:
B. 5.8 × 10^19 kg
Explanation:
When water changes into water vapor, this is called
a. condensation
b. transpiration
c. precipitation
d. evaporation
Which group of organisms disappeared during the mass extinction at the end of the Cretaceous Period?
A. dinosaurs
B. mammoths
C. saber tooth cats
D. trilobites
Answer:
saber tooth cats
Explanation:
What is the energy of a microwave photon that has a frequency of 9.86 x 1012 Hz?
Answer:
E = 65.37×10⁻²² J
Explanation:
Given data:
Energy of photon = ?
Frequency of photon = 9.86×10¹² Hz
Solution:
Formula:
E = h.f
Here h is planck's constant its value is 6.63×10⁻³⁴ js.
E = 6.63×10⁻³⁴ js × 9.86×10¹² Hz
Hz = s⁻¹
E = 65.37×10⁻²² J
The energy of photon is 65.37×10⁻²² J.
An element that forms colored ions is
A)Na
B)Са
C)Ti
D)Li
The relationship between Fahrenheit and Celsius is as follows: °F = °C * 1.8 + 32 If the weather forecaster says it will be 14 °F, what is that in Celsius?
Answer:
The answer is "-10° C".
Explanation:
Fahrenheit and Celsius, both use scales for measuring their temperature standard. The Fahrenheit suggests, as just a cold water point by taking 32° F and hot water rate by taking 212° F. The freezing temperature of both the water at the Celsius scale is 0° C, as well as the boiling point of its water at 100° C.
Converting the Fahrenheit to Celsius:
Formula: [tex]\bold{^{\circ}F = ^{\circ}C \times 1.8 + 32}[/tex]
°F= 14
[tex]\to 14 = ^{\circ}C \times 1.8 + 32}\\\\\to 14 -32 = ^{\circ}C \times 1.8 \\\\\to -18 = ^{\circ}C \times 1.8 \\\\\to ^{\circ}C = \frac{-18}{1.8} \\\\\to ^{\circ}C = \frac{-180}{18} \\\\\to ^{\circ}C = - 10[/tex]
Some species of moose are adapted to eat grasses and flowers in the summer and pine needles in the winter.
Where are these organisms adapted to live?
Deserts
Taigas
Tropical rain forests
Grasslands
Answer:
B. Taigas
Explanation:
When sugar is dissolved in hot tea, physical changes occur. Write two physical properties of sugar
that change when dissolved in hot tea.
Answer:
When you mix the sugar into the tea and stir, it dissolves so you can't see it. Also when you stir the sugar into the tea the taste changes and it turns sweeter.
The physical property of sugar that changes is that the the sugar is dissolving as well as the molecules will get further apart from each other and will give a sweet taste.
What is physical change?A physical change is characterized by a shift in the physical properties. Melting, transformation to a gas, change in resilience, change in durability, changes in crystal form, textural alter, shape, size, color, volume, and density are all illustrations of physical properties.
The physical characteristics of a substance include its shape, size, color, and state.
A physical change takes place when a substance experiences a shift in its physical properties. Physical changes are usually reversible. There is no new substance formed as a result of such a change.
The parameter of sugar that changes is that it dissolves, and the molecules get further apart from each other, producing a sweet taste.
Thus, the two physical properties of sugar that change when dissolved in hot tea is breaking down of its crystal structure as well as giving sweetness.
For more details regarding physical changes, visit:
https://brainly.com/question/17931044
#SPJ2
if the Earth can fit 1000
billion people, why is the
human carrying capacity
likely only between 10-15
billion?
Answer:
because people are not having babies fast enough
Explanation:
A scientist discovers a new substance. The molecules of the substance form hydrogen bonds with each other. When the molecules lose a lot of
energy, the hydrogen bonds hold them relatively far apart. Based on this information, what can the scientist infer about the substance? (2
points)
Оа
It expands when it freezes.
Oь
It is highly colored.
Ос
It exists only as a gas.
Od
It does not dissolve ionic compounds.
Answer: The answer is: It expands when it freezes. When molecule freezes, it lose energy. When molecules are far apart, it means the volume is greater and it expands.
Explanation: its A can u also anwser my question.
Answer:
it is A
Explanation:
I did the test and got it right!
Which of the following is NOT a true statement?
The amount of solar radiation emitted by the Sun varies during different Earth
seasons. UV rays are blocked by Earth’s ozone layer.
The top several meters of the ocean is the greatest absorber of solar radiation on Earth.
Snow has a greater albedo than a rain forest.
Answer:
The amount of solar radiation emitted by the Sun varies during different Earth seasons
Explanation:
please help!!!
Think about some of the friends in your life, and ask yourself why you became friends.
Think about one friendship, in particular, that might be a good example of at least two of these factors in friendship: mere exposure effect, similarity, reciprocal liking, and utilitarian value. Explain why this friendship is a good example of these two factors.
this is in psychology
please answer the question correctly.
Answer:
i became freinds with (friends name) because he liked me for me and he did not make fun of me when i did something inbarrasing at school he always made me lough to.
Explanation:
In which one of the following branches of natural science are properties of materials studied?
a.
Biology
b.
Chemistry
c.
Geology
d.
Astronomy
Answer:
chemistry
Explanation:
it is the study of structer, composition and change that matter undergoes
If an object has a density of 0.2g/ml, will it sink or float in water?
Sink
Float
Answer:
float ...(i think)
Explanation:
Which is NOT an example of an inclined plane?
Question 4 options:
A See-Saw
A screw
A slide
A ramp
Answer:
A. See-Saw
Explanation:
A see-saw is not an inclined plane but it is a lever.
A screw, ramp and a slide are all inclined planes
Simple machines help to make doing work easier. They simply help to amplify effort.
There are different types of simple machines;
the wheel and axle, the lever, the inclined plane, the pulley,d the screw, and the wedge.An inclined plane is a simple machine made up of a plane fixed at one end and then tilted at the other.
Which model of the atom was used as a result of JJ Thomson's cathode ray
experiments?
a. Plum pudding model
b. Nuclear model
C. Planetary model
d. Quantum mechanical model
Answer:
a. Plum pudding model
Explanation:
The plum pudding model of the atom was proposed by J.J. Thomson. It was the model he derived from his experiment on the gas discharge tube.
J.J Thomson was the first person to discover electrons which he called cathode rays because in the discharge tube, they emanate from the cathode.
This led him to suggest the plum pudding model of the atom. The model reflects electrons being surrounded by a volume of negative charges.CHOICES:
Celsius
higher temperature
how fast molecules vibrate lower temperature
the number of molecules
Fahrenheit
expands
Joules
less internal energy
more internal energy
calories
kelvin
HEAT VS TEMPERATURE
Heat and temperature are related but they are not the same. Heat depends
on (1)_____________
and also on (2)___________
that vibrate. More vibrating
molecules usually mean (3)_________
Fewer vibrating molecules usually mean
(4)__________
Faster vibrating molecules mean (5)___________
Slower vibrating
molecules mean (6)__________
Heat is measured in units called (7)__________
and (8)___________
Temperature is measured in units called
(9)____________
(10)._____________
and (11)____________
When matter is heated, it
(12)______________
PLEASE PA ANSWER PO
Answer:
HEAT VS TEMPERATURE
Heat and temperature are related but they are not the same. Heat depends on (1) how fast molecules vibrate and also on (2) the number of molecules that vibrate. More vibrating molecules usually mean (3) more internal energy. Fewer vibrating molecules usually mean (4) less internal energy. Faster vibrating molecules mean (5) higher temperature. Slower vibrating molecules mean (6) lower temperature. Heat is measured in units called (7) Joules and (8) calories. Temperature is measured in units called (9) Celsius, (10) Fahrenheit, and (11) kelvin. When matter is heated, it (12) expands
Explanation:
The atoms and molecules of a substance to which heat is added vibrate faster. The vibration of the atoms causes the space between the atoms to increase. The state of the matter, liquid solid or gas is determined by the motion and spacing of the particles in the matter.
As the motion of the of the molecules in the substance increases, the substance expands.
Kobe Bryant was recorded to have thrown a basketball 10m in 0.75 seconds. What was the ball’s speed
rip kobe Bryant rip 24
Answer:
Rip :(((
Explanation:
Im so sorry for not answering but rip kobe :(
Write 2.0 x 10^-3 in standard notation
Answer:
= 3.456 × 1011
(scientific notation)
= 3.456e11
(scientific e notation)
= 345.6 × 109
(engineering notation)
(billion; prefix giga- (G))
= 345600000000
(real number)
Explanation:
i dont know if its math or something else so here are your answers:)
Answer:
0,002
Explanation:
Will give Brainliest! Science question
What does a cladogram show?
A. comparison of the relative ages of organisms
B. evolutionary relationships between organism
C. comparison of species that are most similar
D. ecological relationships between organisms
Answer:
B
Explanation:
I did this and got it correct.