Answer:
Option 2: temperature and volume
Explanation:
took the test
Temperature and volume are the variables for this piston.
What is a temperature?Temperature is a measure of hotness or coldness
The volume of a gas is directly proportional to its absolute temperature. More specifically, for a fixed mass of gas at constant pressure, the volume (V) is directly proportional to the absolute temperature (T).
This is Charles' Law. V = kT, where k is a proportionality constant.
Hence, temperature and volume are the variables for this piston.
Learn more about temperature here:
https://brainly.com/question/11464844
#SPJ2
A box of groceries requires 5,0 newtons of force to lift it up 1.0 meter. How much work is done?
0.0 J
1.0 J
2.0 J
5.0 J
Please help I’ll give Brainliest
Select the correct location on the image.
In pea plants, white seed coat is a recessive trait and gray seed coat is a dominant trait. Which offspring have a white seed coat?
Answer:
f2 4 answer. GG its right.
Explanation:
Answer:
hey the answer is in box f2 gg
Explanation:
A compound has an empirical formula of SO3 and a molecular mass of 152. What is the molecular formula?
Answer:
Molecular formula = S₂O ₆
Explanation:
Given data:
Empirical formula = SO₃
Molecular formula = ?
Molecular mass = 152 g/mol
Solution:
Molecular formula = n (empirical formula)
n = molar mass of compound / empirical formula mass
Empirical formula mass = 80 g/mol
n = 152 g/mol / 80 g/mol
n = 2
Molecular formula = n (empirical formula)
Molecular formula = 2(SO₃)
Molecular formula = S₂O ₆
name five organs of the digestive system and state there function
Answer:
Organ Movement Food Particles Broken Down
Stomach Upper muscle in stomach relaxes to let food enter, and lower muscle mixes food with digestive juice Proteins
Small intestine Peristalsis Starches, proteins, and carbohydrates
Pancreas None Carbohydrates, fats, and proteins
Liver None Fats
Explanation:
What causes valley air to move up surrounding mountains during the day?
The Sun warms the air in the valley more than it does the mountains.
The Coriolis Force moves the winds up the sides of hills and mountains.
The Sun warms the tops of hills and mountains more than it does the valley.
The valley air is denser because is of its lower elevation.
Answer:
so the third one
Explanation:
During the day, the sun heats up mountain air rapidly while the valley remains relatively cooler. Convection causes it to rise, causing a valley breeze. At night, the process is reversed. During the night the slopes get cooled and the dense air descends into the valley as the mountain wind.
Answer:
The Sun warms the tops of hills and mountains more than it does the valley.
Explanation:
Which factor can increase the potential energy of an object?
Decrease in speed
Decrease in density
Increase in temperature
Increase in height from the ground
Answer:
Increase in height from the ground.
Explanation:
Potential energy =mass×acceleration due to gravity×height.
P.E= mgh
For something to be considered mechanical energy what has to happen? This may be the
most important idea to understand about mechanical energy
Answer:
Mechanical Energy - The Physics Classroom
Objects have mechanical energy if they are in motion and/or if they are at some position relative to a zero potential energy position (for example, a brick held at a vertical position above the ground or zero height position). A moving car possesses mechanical energy due to its motion (kinetic energy).
4 Which form of energy is stored in this
container?
(F) chemical energy
o electrical energy
(I kinetic energy
I sound energy
Answer: (F) chemical energy
Explanation:
What is the highest main energy level of Cl? How many inner shell electrons does Cl have?
Answer:
The highest energy level in which you would find electrons in a ground state chlorine atom is the third energy level.
Explanation:
The highest energy level in which you would find electrons in a ground state chlorine atom is the third energy level.
HEY! Nicki Minaj is the queen of rap.
Answer:
O my OMG
Explanation:
Remember Nicki vs. Cardi
Which nuclear equation represents a spontaneous decay?
(1) Rn 21% Po + He
(2) 13 Al + He 18P + on
(3) 235 U + in ~ 13% Ba + Kr + 3n
(4) Li + H → He + He
a. 1
b. 2
C 3
d. 4
Answer:
a. 1
Explanation:
Radon is a member of group 18. It is an odorless heavy gas, that emanates from materials that contain uranium.
Rn is a decay product of 226-Ra, a member of the uranium decay series. The spontaneous decay of Rn decay leads to the emission of an alpha particle.
Rn has a half-life of about 3.8 days and its decay product is 218Po.
The nuclear reaction which shows a spontaneous decay is Rn 21% Po + He.
What is spontaneous reaction?
Those reaction in which value of their enthalpy change and change in Gibb's free energy is negative, are spontaneous in nature.
Among all of the given reaction, only first reaction is spontaneous in nature because the given element Radon (Rn) is the product of the decay of uranium series. And in this reaction energy is emitted in the form of alpha particles.
Hence, option (1) is correct.
To know more about spontaneous reaction, visit the below link:
https://brainly.com/question/24376583
Which of these landforms woul most likely be found at a divergent boundary?
A. fault line
B. mid-ocean ridge
C. volcanic island
D. mountain
Answer:
A.
Explanation:
Divergent boundaries occur when plates move away from each other, causing rifts.
The landform created by the divergent boundary is the oceanic plates. Thus option B mid-ocean ridge is correct.
What are plate boundaries?Plate boundaries are created by the movement of tectonic plates.When two tectonic plates diverge from each other , a diverging border is created.
As magma or molten rock rises from the Earth's mantle to the surface and solidifies to form new oceanic crust, earthquakes frequently occur along these borders. Divergent plate boundaries can be seen, for instance, in the Mid-Atlantic Ridge.
An area where two plates converge is referred to as a convergent border. The borders of one or both colliding plates may bow up into mountain ranges as a result of the impact, or one plate may bend downward into a deep undersea trench.
To find more on plate boundaries, refer here:
https://brainly.com/question/18256552
#SPJ2
An element whose atoms have the electron configuration 2-8-18-1 is
А
a transition element
B
a noble gas
an alkali metal
D
an alkaline earth metal
Answer:
A transition element atomic number 29 copper Cu
Explanation:
____ NaBr + ____ Ca(OH)2 ___ CaBr2 + ____ NaOH
Answer:
2 NaBr + 1 Ca(OH)2 ---> 1 CaBr2 + 2 NaOH
Please help me I’m struggling!!
I’ll mark brainliest!!
CHEMISTRY
Answer:
the 4th one
Explanation:
2NACL 2NA + CL2
Answer:
It's B, the previous answer is wrong
Explanation:
The air at the top of Mount Everest has pressures of 201.0 torr N2, 50.0 torr O2, 2.0 torr Ar, and 0.5 torr CO2. What is the total air pressure at the top of the highest peak in the world? Show all work to receive full credit.
Answer:
The total air pressure at the top of the highest peak in the world is 253.5 torr
Explanation:
The partial pressures of the gases present at the top of Mount Everest are;
Nitrogen, N₂ = 201.0 torr
Oxygen, O₂ = 50.0 torr
Argon, Ar = 2.0 torr
Carbon dioxide, CO₂ = 0.5 torr
By Dalton's law of partial pressure, the total pressure that a mixture of gases exerts is equal to the sum of the partial pressures of the individual gases
Mathematically, the law can be expressed as follows;
Total pressure, P = ∑P[tex]_i[/tex] = P₁ + P₂ + · · ·
From which we have;
The total air pressure at the top of the highest peak in the world, Mount Everest, [tex]P_{Total Mont Everest}[/tex] = The sum of the partial pressures of N₂, O₂, Ar, and CO₂
[tex]P_{Total Mont Everest}[/tex] = 201.0 torr + 50.0 torr + 2.0 torr + 0.5 torr = 253.5 torr
[tex]P_{Total Mont Everest}[/tex] = 253.5 torr = 0.33355263 atmosphere
Therefore, the total air pressure at the top of the highest peak in the world, [tex]P_{Total Mont Everest}[/tex] = 253.5 torr
The total air pressure at the top of the highest peak in the world is 253.5 torr.
What is Dalton's Law?Dalton's law of gases states that total pressure of any mixture of gases is equal to the sum of the partial pressures of individual gases.
Given that,
Partial pressure of Nitrogen gas = 201 torr
Partial pressure of Oxygen gas = 50 torr
Partial pressure of Argon gas = 2 torr
Partial pressure of Carbon dioxide gas = 0.5 torr
Total pressure at the top = 201 + 50 + 2 + 0.5 = 253.5 torr
Hence total pressure is 253.5 torr.
To know more about partial pressure, visit the below link:
https://brainly.com/question/19813237
A sample of nitrogen in a rigid container that is originally at 25.0°C and 98.0 kpa is heated until the pressure is 177 kpa. What is the final temp in Kelvin, in degrees celsius
The final temp : 538.2 K = 265.2 °C
Further explanationGiven
Temperature : 25 + 273 = 298 K
Initial Pressure = 98 kPa
Final pressure = 177 kPa
Required
The final temp
Solution
Gay Lussac's Law
When the volume is not changed, the gas pressure is proportional to its absolute temperature
[tex]\tt \dfrac{P_1}{T_1}=\dfrac{P_2}{T_2}[/tex]
Input the value :
T₂=(P₂.T₁)/P₁
T₂=(177 x 298)/98
T₂=538.2 K
which is larger Ca or Ca2+
Answer:
Ca
Explanation:
Ca is larger than Ca2+ because, in the periodic table, the atomic radius increases from top to bottom and from left to right. Also Ca has 2 more electrons than Ca2+ therefore, its atom is bigger because it has an extra shell.
Ca²⁺ is smaller than Ca. As Ca²⁺ has lost two electrons to become positively charged.
Ca²⁺ is the calcium ion, which has lost two electrons to become positively charged. When an atom loses electrons, it becomes smaller because there are fewer negatively charged electrons in the electron cloud to balance the positive charge of the nucleus.
On the other hand, Ca refers to the neutral calcium atom, which has an equal number of protons and electrons. In comparison to Ca²⁺, the neutral calcium atom has two additional electrons, which increases the electron cloud and overall size of the atom.
Therefore, Ca²⁺ is smaller than Ca.
Learn more about calcium here:
https://brainly.com/question/30954368
#SPJ 4
What are the disadvantages of using nonrenewable energy resources?
They are readily available.
They are harmful to the environment.
There is only a certain amount of each source.
They are easy to extract from the earth.
Four animals were fleeing from a wildfire. All of them were running at a speed of 30 miles per hour. Which one has the greatest kinetic energy?
A Elephant
B) Dog
© Mouse
D) Ant
Answer: I don’t know lol
Explanation: I am so sorry I thought this was easy
Answer:
Ant.
Explanation:
The dog would be the most frantic, when all are compared at an equal speed of 30 mph. An ant of such strength, has six jointed legs and has an exoskeleton. An Ant of such size(mass) and weight would have take off with better traction too(6 legs). So the Ant would have the greatest kinetic energy. Also it would take turns while fleeing from the wildfire, while running at almost 30 mph while the other animals wouldn't come that close.
It is technically and literally illogical to say an ant can do 30 mph in its regular size.
Dont believe me? Watch ants scurrying away when threatened and taking turns and U-turns. Six legs offer more energy while fleeing by instinct. Literally six legs at 30 mph. Crazy!
What is the name for the elements that have some properties of metals and some properties of non-metals
Answer: The metalloids are a unique group of elements that share properties of both metals and nonmetals.
Explanation: They're also called the semimetals because of the shared properties of these elements along the dividing line between metals and nonmetals.
What is an electron configuration?
Answer:
Electronic configuration, also called electronic structure, the arrangement of electrons in energy levels around an atomic nucleus.
Answer:
In atomic physics and quantum chemistry, the electron configuration is the distribution of electrons of an atom or molecule in atomic or molecular orbitals
Explanation:
:) hope it helps! have a good day
What is the charge of an atom with 21 protons and 20 electrons?
Answer:
Positive
Explanation:
If an atom has more protons than electrons, its charge with be positive. Protons have a positive charge, and electrons have a negative charge.
What kind of reaction is shown below?
C8H18 → C2H4 + C6H14
a combustion
b double replacement
c composition
d decomposition
e single replacement
Answer:
d. decomposition
Explanation:
decomposition reaction is a reaction in which a compound breaks down into 2 or more substances.
the general form is: AB → A + B
one product is lead iodide. The other product is ___.
Answer:
potassium nitrate
Explanation:
Answer:
Potassium Nitrate
Explanation:
Edge 2021
Question 1 (1 point)
Use coefficients to balance the following reaction:
Na + 02 → Na20
Blank 1:
Blank 2:
Blank 3:
Answer:
Blank 1: 4
Blank 2: 1
Blank 3: 2
Explanation:
The unbalanced reaction expression is given as:
Na + O₂ → Na₂O
Now, we use a mathematical approach to balance the reaction given above.
Assign coefficients a , b and c for the blanks:
aNa + bO₂ → cNa₂O
Conserving Na : a = 2c
O: 2b = c
So, let c = 1, a = 2 and b = [tex]\frac{1}{2}[/tex]
Multiply through by 2;
a = 4, b = 1 and c = 2
4Na + O₂ → 2Na₂O
Blank 1: 4
Blank 2: 1
Blank 3: 2
A block of material has a volume of 2 mº. It has a mass of 1 x 104 kg. Calculate the density of the materia
sample and express your results in g/cm with appropriate scientific notation.
Answer:
d = 0.5×10¹g/cm³
Explanation:
Given data:
Volume of material = 2 m³
Mass of material = 1×10⁴ Kg
Density of material = ?
Density:
Density is equal to the mass of substance divided by its volume.
Formula
d = m/v
Solution:
Volume of material = 2 m³
1 m³ = 1000000 cm³
2 ×10⁶cm³
Mass of material = 1×10⁴ Kg
1 Kg = 1000 g
1×10⁷ g
by putting values into density formula
d = 1×10⁷ g/2 ×10⁶cm³
d = 0.5×10⁷⁻⁶ g/cm³
d = 0.5×10¹g/cm³
calculate the freezing point of 3.46 gram of a compound X in 160 gram of benzene when a separate sample of X was vaporized it's density was found to be 3.27 gram/liter at 116°c and 773 torr. The freezing point of pure benzene is 5.45°c of Kf=5.1°/m
Answer: The freezing point of 3.46 gram of a compound X in 160 gram of benzene is [tex]4.38^0C[/tex]
Explanation:
The relation of density and molar mass is:
[tex]d=\frac{PM}{RT}[/tex]
where
d = density = 3.27 g/ L
P = pressure of the gas = 773 torr = 1.02 atm (760 torr = 1atm)
M = molar mass of the gas = ?
T = temperature of the gas = [tex]116^0C=(116+273)K=389K[/tex]
R = gas constant = [tex]0.0821Latm/Kmol[/tex]
[tex]M=\frac{dRT}{P}=\frac{3.27g/L\times 0.0821Latm/Kmol\times 389K}{1.02atm}=102.3g/mol[/tex]
The relation of depression in freezing point with molality:
[tex]\Delta T_f=k_f\times m[/tex]
[tex]\Delta T_f[/tex] = depression in freezing point = [tex]T_f^0-T_f[/tex] = [tex]5.45-T_f[/tex]
[tex]k_f[/tex] = freezing point constant = 5.1
m = molality = [tex]\frac{\text {moles of X}}{\text {weight of solvent in kg}}=\frac{3.46\times 1000}{102.3\times 160}=0.21[/tex]
[tex]5.45-T_f=5.1\times 0.21[/tex]
[tex]T_f=4.38^0C[/tex]
Thus the freezing point of 3.46 gram of a compound X in 160 gram of benzene is [tex]4.38^0C[/tex]
From the information contained in the question, the freezing point of the solution is 4.38°C.
The molar mass of the compound can be obtained from;
M = dRT/P
Where;
d = Density of the gas = 3.27 gram/liter
R = molar constant = 0.082 atmL-K-1mol-1
T = Absolute temperature = 389 K
P = pressure = 773 torr or 1.02 atm
M = 3.27 gram/liter × 0.082 atmL-K-1mol-1 × 389 K/1.02 atm
M = 102.3 g/mol
Number of moles of X = 3.46 gram/102.3 g/mol = 0.034 moles
Molality of the solution = Number of moles of solute/ Mass of solution in kilograms = 0.034 moles/0.16 = 0.21 m
Using the relation;
ΔT = K m i
Where;
ΔT = Freezing point depression
K = Freezing constant = 5.1°C/m
m = molality of solution = 0.21 m
i = Van't Hoff factor = 1
ΔT = 5.1°C/m × 0.21 m × 1
ΔT = 1.07 °C
But;
ΔT = Freezing point of pure solvent - Freezing point of solution
Freezing point of solution = Freezing point of pure solvent - ΔT
Freezing point of pure solvent = 5.45°C
Freezing point of solution = 5.45°C - 1.07 °C
Freezing point of solution = 4.38°C
Learn more: https://brainly.com/question/20906233
Need help on this please help
Answer:
It's because the Earth is tilted on it's axis. So the second answer.
I hope that helps :)
12. Draw the lewis structure for the element to help you answer the question *
Answer:hope it helps
Explanation:
