Answer:
D
Explanation:
My logic: Electricity produces heat, chemical reactions produce heat. And so on.
Answer: A:Radition
Explanation:
I’ll mark you brainlist
Answer:
High mass star.
Explanation:
The mass of a star defines its life span. the least massive stars will live the longest and the most massive stars will use their fuel in a few million years and end in a spectacular supernova.
What is Gallium Sulfide(Ga2S3).
Ionic or Covalent?
Highlight the larger unit of measure under each letter (a-f). Then, write if the unit highlighted measures distance, volume, or weight (mass).
a. meter or kilometer
b. yard or foot
c. cup or quart
d. pound or ounce
e. liter or milliliter
f. gram or kilogram
Answer:
2. The unit could be gram or kilogram ⇒ answer f
3. The larger unit is kilogram and measures weight (mass)
Step-by-step explanation:
Let us revise the SI units of measuring
The SI unit of measuring distance is meter
The SI unit of measuring volume is liter
The SI unit of measuring mass is kilogram
2.
When this pet hamster is placed on a digital scale, the scale reads 1.5
∵ The SI unit of measuring weight (mass) is kilogram
∵ The scale reads 1.5
∴ The unit is kilogram
The unit could be gram or kilogram
3.
∵ The larger unit of measure is kilogram
∵ Kilogram measures the weight (mass)
∴ The unit measures weight (mass)
The larger unit is kilogram and measures weight (mass)
Explanation:
The purpose of warfare in our world
Answer
We are currently working on a dataset of war and large-scale violent events over the long run. If you want to contribute to this research please get in touch.
Explanation:
MOLES AND MOLAR MASS
One of the goal's of an atom is:
to give away ALL of its atoms
to have a "full" last orbital shell
to steal as many electrons as possible
Answer:
to have a "full" last orbital shell
Explanation:
They can not live withought ther outer most shell
Which two changes of state can occur when a substance gains thermal
energy?
Answer:
Adding enough thermal energy to a substance can cause a change of state to occur. The change of state from a solid to a liquid is called melting. When energy is added to an ice cube, the ice particles speed up as energy is absorbed. When the particles move fast enough, the solid ice melts and becomes liquid water
Answer:
c and d
Explanation:
How many Elements are in the following molecule -CHNaO
Answer:
4 elements
C carbon
H hydrogen
Na sodium
O oxygen
Explanation:
A material that conducts electricity only at high temperatures.
A.Semiconductor
B.Compound
C.Luster
D.Brittle
Answer:
Semiconductor
Explanation:
Semiconductors conduct electricity as the temperatures increase.
Hope this helped.
At which point in its orbit is a planet traveling fastest
Answer:
The fastest a planet moves is at perihelion (closest) and the slowest is at aphelion (farthest).
Explanation:
A planet travels fastest when the planet is closest to the sun also known as the perihelion.
What is an orbit?An orbit is a regular, repeating path that one object in space takes around another one.
The planet moves faster when it is nearer the Sun and slower when it is farther from the Sun.
A planet moves with constantly changing speed as it moves about its orbit.
The fastest a planet moves are at perihelion (closest) and the slowest is at aphelion (farthest).
The force of gravity acting on a planet is equal to its mass times its centripetal acceleration.
Force of gravity = [tex]\frac{m v^2}{r}[/tex]
The force of gravity is defined by Newton's law of universal gravitation as:
Force of gravity = [tex]\frac{mMG}{r^2}[/tex]
Therefore:
[tex]\frac{mMG}{r^2}[/tex] = [tex]\frac{m v^2}{r}[/tex]
[tex]\frac{MG}{r}[/tex]= [tex]v^2[/tex]
According to the equation if v increases r decreases.
Hence, the planet is moving fastest when it's closest to the sun, also known as the perihelion.
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Question 9 of 10
What are the half-reactions for a galvanic cell with Zn and Ni electrodes?
A. Zn2+(aq) + 2e → Zn(s) and Ni2+(aq) + 2e → Ni(s)
B. Zn2+(aq) + 2e → Zn(s) and Ni(s) + Ni2+(aq) + 2e
C. Zn(s) → Zn2+(aq) + 2e and Ni(s) → Ni2+(aq) + 2e
O D. Zn(s) → Zn2+(aq) + 2e and Ni2+(aq) + 2e → Ni(s)
SUBMIT
Option D. Zn(s) → Zn2+(aq) + 2e and Ni2+(aq) + 2e → Ni(s)
What are half-reactions for a galvanic cell with Zn and Mg electrodes?The emf of a half-cell, with respect to the standard hydrogen electrode, is called the reduction potential. The emf for the Mg-Zn cell described would be: E=Eo(red) (Zn) - Eo(red) (Mg) = -0.76 - (-2.38) = 1.62V if the solutions are 1.0 M.
What are the half-reactions of a galvanic cell?A half-cell reaction is either an oxidation reaction in which electrons are lost or a reduction reaction in which electrons are gained. The reactions occur in an electrochemical cell in which the electrons are lost at the anode through oxidation and consumed at the cathode where the reduction occurs.
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What is the wavelength of electromagnetic radiation which has a frequency of 4.464 x 10^14 s-1
a. 1.338 x 10^23 m
b. 1.489 x 10^-6 m
c. 6.716 x 10^-7 nm
d. 671.6 nm
Answer:
d. 671.6 nm
Explanation:
It is possible to solve the wavelength of a radiation from its frequency -or vice versa- using:
λ = c / f
Where λ is wavelength,
c is speed of light, a constant (2.998x10⁸m/s)
And f is frequency: 4.464x10¹⁴s⁻¹
Replacing:
λ = 2.998x10⁸m/s / 4.464x10¹⁴s⁻¹
λ = 6.716x10⁻⁷m
As 1m = 1x10⁹nm:
6.716x10⁻⁷m * (1x10⁹nm / 1m) = 671.6nm
Right answer is:
d. 671.6 nm
How many significant digits would you report an answer to if you divided 2.654 by 3.2?
answer choices
1
2
3
4
Answer:1
Explanation:
(a)² + (b)² = ?
help please
answer:
a^2+b^2= (a+b)² -2ab
A 180-W resistor has 0.10 A of current through it. What is the potential difference across the resistor? Include numerical answer with correct units.
Ur a real one if u solve this no cap
And I only got 10 min to get the answer
Answer:
1800V
Explanation:
Given parameters:
Power in the resistor = 180W
Current = 0.1A
Unknown:
Potential difference = ?
Solution:
The power in a circuit is given as:
P = I V
P is the power
I is the current
V is the potential difference
Now insert the parameters and solve for V;
180 = 0.1 x V
V = 1800V
how many bonds can nitrogen have
Answer:
3
Explanation:
I think so, let me know if its wrong.
Object A has a mass of 500g and object B has a mass of 300g. Which object is more dense?
Answer:
500g because 300g is less dense than 500g its kinda like a weight
Explanation:
i
WILL GIVE BRAINLIEST
Which statement describes earthquakes?
They release energy.
They are caused by reduced stress in rocks.
They begin at the epicenter.
They result from movement on Earth’s surface.
Answer:
A
Explanation:
PLEASE HELP I WILL GIVE BRAINLIEST
2. For the graph to the left, what is the independent variable? ___
3. For the graph to the left, what is the dependent variable? ___
Answer:
Independent is x, which is the time.
Dependent is y, which is the distance.
What is the number of valance electrons for oxygen
Answer:
six
Explanation:
Valence electrons are the electrons in the outermost shell, or energy level, of an atom. For example, oxygen has six valence electrons, two in the 2s subshell and four in the 2p subshell.
Answer:
Six!
Explanation:
Valence electrons are the electrons in the outermost shell of an atom.
A student drops a ball from 5 feet above the ground. After bouncing once, it only reaches a maximum height of 4 feet above the ground. Use energy terms to explain why the ball did not reach its original height after bouncing once.
Answer:
because the gravity of the ball can't go that high
There is a law called conservation of energy which states that energy can neither be created nor be destroyed. It can be only transferred from one form to another form. Therefore, some energy is lost to the environment as sound or heat.
What is energy transfer?Energy transfer is a phenomenon in which energy transfer from one matter to another matter. Energy can be transferred in two forms that are by doing work or by transferring heat.
Heat can be transferred by three ways conduction, convention and radiation. In conduction, when two object are in direct contact, transfer of molecules takes place. As the ball impacted the ground, the energy would have been lost to the environment as sound or heat.
Therefore, some energy is lost to the environment as sound or heat.
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2Mg + O2
2Mgo
what is the coefficient
Answer:
In this chemical equation, there are two main elements. Those elements are magnesium (Mg) and oxygen (O). Molecules are a group of atoms bonded together, and in this case, the oxygen molecules is O2, but not 2MgO because there are two different molecules in this compound. Coefficients are a number that multiply an entire molecule, and are also placed in front of it. In this case, O2 has no coefficient, but a subscript of 2. But, every molecule in this equation must have a coefficient and if add a coefficient of 1 to the oxygen molecule, it does nothing to the overall balancing of equations.
So, the answer: coefficient to the oxygen molecule is 2.
Have a great day/night, stay safe, and merry christmas!
A red-colored female New Hampshire Red chicken mated with a red-colored male New Hampshire Red chicken and produced golden-colored offspring. Which statement best explains how the offspring could inherit a trait not shown in the phenotypes of either parent?
Answer:
See the answer below
Explanation:
The statement that could best explain how the offspring could inherit a trait not shown in the phenotypes of either parent would be that both parents are heterozygous for the red color.
Heterozygous parents can produce offspring with a phenotype that is distinctly different from that of either parent if the recessive alleles come together during random fusion of gametes.
Let us assume that the red color (R) in the New Hampshire chicken is the dominant one and the recessive one is the golden color (r). The genotype of the heterozygous parents would be Rr.
Rr x Rr
RR Rr Rr rr
There is a probability (1/4) of producing a golden color chicken (rr), a trait that is not displayed in either of the parents.
Why is radium more reactive than calcium?
How are amplitude modulation and frequency modulation techniques similar?
Both are used by cell phones to produce images.
Both transform electrical signals into sound waves.
Both modify the pulse of a carrier wave.
Both are used by radio stations to transmit sound.
Answer:
D. Both are used by radio stations to transmit sound
Explanation:
The main difference between both modulations is that in frequency modulation, the frequency of the carrier wave is modified as per the transmit data, while in amplitude modulation, the carrier wave is modified according to the data. because of this it can NOT be A, B, or C but it CAN be D
PLZ MARK AS BRAINLIEST :)
The amplitude modulation and frequency modulation techniques similar as , Both are used by radio stations to transmit sound.
So, option D is correct one.
What is difference between amplitude modulation and frequency modulation techniques ?The primary distinction between the two types of modulation is that , amplitude modulation modifies the carrier wave in accordance to data, frequency modulation modifies the carrier wave's frequency according to the transmit.The frequency modulation operates between 88 and 108 MHz and the amplitude modulation operates between 535 and 1705 KHz.learn about amplitude modulation
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Question 6 W If 50. mL of 1.0 M NaOH is diluted with distilled water to a volume of 2.0 L, the concentration of the resulting solution is А 0.025 M B 0.050 M C 0.10 M D 0.50 M E 1.0 M
Answer:
im not sure man
Explanation:
What Is It?
Imagine you find a bowl filled
with clear liquid in your kitchen. List three liquids it might be. Describe how you could use the liquid's physical and chemical properties to determine which of the three it is.
Answer:
physical
Explanation: water can change from solid to liquid to a gas
If 1520 J are added to 16.5 g of water at 63.1 c what will the final temperature be
BOYLES LAW
GUYS PLZ HELP ME WITH THESE TWO
ILL CHOOSE U BRAINLIEST
use the formula p1v1= p2v2
for 1
300×300=500×x
x=180ml
A 10.-liter flask at a given temperature and pressure contains 6.0 × 1023 molecules of hydrogen gas. Under the same conditions of temperature and pressure, how many molecules would a 10.-liter flask of nitrogen gas contain?
Answer:
The same number of molecules, 6.0 × 10²³ molecules.
Explanation:
The amount of any given gas that can be stored in a container depends on the temperature, pressure and volume of the container. It does not depend on the nature (or identity) of the gas.
So if a 10-liter flask contains 6.0 × 10²³ molecules of hydrogen gas, it will contain the same amount of molecules of any other gas when temperature and pressure remain constant.