Answer:
I'd say about 8?
Explanation:
if you wanna make them huge make about 6
What is the frequency of light with a wavelength of 3.2 x 10^-16 m?
Answer:
f = 0.94 ×10²⁴ Hz
Explanation:
Given data:
Frequency of light = ?
Wavelength of light = 3.2 ×10⁻¹⁶ m
Solution:
Formula:
Speed of light = wavelength × frequency
c = λ × f
c = speed of wave = 3×10⁸ m/s
by putting values,
3×10⁸ m/s = f × 3.2 ×10⁻¹⁶ m
f = 3×10⁸ m/s / 3.2 ×10⁻¹⁶ m
f = 0.94 ×10²⁴ s⁻¹
f = 0.94 ×10²⁴ Hz (Hz = s⁻¹)
The picture below shows the positions of the Earth, Moon, and Sun during an eclipse.
What is true of the eclipse shown in the picture?
A.
It is a lunar eclipse, in which the Earth casts a shadow on the Moon.
B.
It is a solar eclipse, in which the Earth casts a shadow on the Moon.
C.
It is a lunar eclipse, in which the Moon casts a shadow on the Earth.
D.
It is a solar eclipse, in which the Moon casts a shadow on the Earth.
Answer:
it is option c liner eclipse
Answer:
A-It is a lunar eclipse, in which the Earth casts a shadow on the Moon.
A wave in which particles of matter vibrate at right angles to the direction
the wave travels is called a(n) wave.
Enter the answer
Check It
Answer:
it will transverse wave I think it will help you
Does anyone know how to do it
why do stars appear to be bigger in the night?
Answer: in the daytime the sun is out so the stars are not visible becuase the suns reflection! At night When you gaze at the constellations, every star produces an image that's the same size, but your retina isn't sensitive enough to respond to the outer parts of those images except for the brighter stars — which therefore look bigger than the fainter ones.
Explanation:
This is what I found on goog.le a while ago now it might actually help if I’m wrong I apologiz, I hope this was your quistion!
What does the salinity of seawater represent?
The concentration of salt dissolve in the ocean
The concentration of all dissolved chemicals in the ocean
The volume of salt in the ocean
the mass of salt in the ocean
Answer:
Salinity is a measure of the 'saltiness' of seawater, or more precisely the amount of dissolved matter within seawater.
Pls help!!! it’s a timed answer
Answer:
Explanation
whats your question
An anion (negatively charged atom) contains...
Rank the states of matter from the LEAST amount of energy to MOST
amount of energy
A.Liquid, Gas, Solid
B.Solid, Liquid, Gas
C.Solid, Gas, Liquid
D.Gas, Liquid, Solid
Answer:
The ranking of matter from the LEAST amount of energy to MOST amount of energy is;
B. Solid, Liquid, Gas
Explanation:
The kinetic energy of the particles that make of matter depends on the temperature of the particles and the particles are constantly vibrating
Solid state (Least amount of energy)
In the solid state, the matter is held in solid (rigid) crystal lattice and the particles are rigidly located next to other adjacent particles and stacked up layer by layer
Liquid state (Intermediate amount of energy)
As the temperature of the particles are increased by heating, the particles (atoms and molecules) gain more kinetic energy and their vibration is increased which on further heating, leads to the breaking of the lattice bond of the solid state and the particles are then readjusted to exist side by side rather than being stacked on one another and the assume the liquid state
Upon further heating the particles in the liquid acquire more energy and are and rather than exist side-by-side, they are able to exist as individual particles in the gaseous form
Gaseous state (Most amount of energy)
From the kinetic theory of matter, the molecules of matter in the gaseous state contains enough energy which is more than the intermolecular forces of attraction such that the particles are able to move and occupy the entire volume of the container in which it is placed
Therefore, the correct option is Solid, Liquid, Gas.
Answer:
gas > liquid > solid
Explanation:
Because I said so,
And I took the test.
How many protons and electrons are in a
Cu 2+ ion?
64
29
A 27 protons, 29 electrons
27 protons, 31 electrons
B
29 protons, 27 electrons
D
29 protons, 31 electrons
Answer:
B 29 protons, 27 electrons
Explanation:
The given specie is copper ion:
Cu²⁺
We are to find the number of protons and electrons it contains.
The number of protons is the positively charged particles in the atom.
Electrons are the negatively charged particles in the atom.
The number of protons is the same as the atomic number
Atomic number of copper = 29
Number of protons = 29
Now;
Charge = Number of protons - Number of electrons
2 = 29 - number of electrons
-27 = - number of electrons
Number of electrons = 27
Question 5 OT 5
At which temperature do particles stop moving entirely?
O A. 0°C
O B. 32 K.
O C. 32°F
O D.OK
OMG LIKE HELP ME! What is the wavelength of the radiation with a frequency that is 5.18 x10^15 Hz? What is the wavelength of the radiation with a frequency that is 5.18 x10^15 Hz? In what region of the electromagnetic spectrum is this radiation?
The wavelength of the radiation : λ=5.792 x 10⁻⁸ m = 5.792 x 10⁻⁶ cm
Region of Ultraviolet
Further explanationGiven
A frequency : 5.18 x10¹⁵ Hz
Required
The wavelength
Solution
Frequency (f): the number of waves per second
Wavelength (λ): the distance from one crest/one trough to another
Fast wave propagation (v): the distance traveled by waves per unit of time
v= 3 x 10⁸ m/s
General formula :
v = λ.f
λ=v/f
Input the value :
λ=3.10⁸ : 5.18.10¹⁵
λ=5.792 x 10⁻⁸ m = 5.792 x 10⁻⁶ cm
Region of Ultraviolet (4000 - 10 A°, 4 x 10⁻⁵ - 10⁻⁷ cm,7.5 x 10¹⁴ - 3 x 10¹⁷ Hz)
What are the homologous series?
Explanation:
Homologous series are the series belonging to a series of aliphatic organic compounds that differ only by the addition of a CH2 group
Hope it will help :)❤
convert 34 g of glucose to Liters of glucose. PLEASE HELP!!
Answer:
0.034 Liters
Explanation:
Which reactions are the reverse of one another? condensation and addition addition and elimination elimination and condensation substitution and addition
Answer: addition and elimination
Explanation:
In addition you add and in elimination you remove (or subtract)
The reactions that are the reverse of one another are addition and elimination. Details about types of reactions are as follows.
What is a reaction?A reaction is the transformation in which one or more substances is converted into another by combination or decomposition.
Reactions can be of different types as follows:
AdditionEliminationSubstitutionCondensationHowever, addition and elimination reactions are reverse of one another because addition involves adding substances while elimination involves removing substances.
Learn more about reactions at: https://brainly.com/question/17434463
#SPJ2
Which bond is most polar?
ОА СО
ов So
Осно
ODNO
Answer:
either first or second if not them try d but I'm pretty sure a also I'm sorry if I getbyou this wrong I dearly apologize
When the vapor pressure of a liquid is equal to the atmospheric pressure, the liquid _____
O has no observable changes
O boils vigorously
O begins to boil
O evaporates
Answer:
O begins to boil
Explanation:
When the vapor pressure of a liquid is equal to the atmospheric pressure, the liquid suddenly begins to boil.
At this point the boiling point of the liquid has been reached. Further addition of heat energy will cause the liquid to boil vigorously Subsequently evaporation will start from the surface of the boiling liquid.The atmospheric pressure is the ambient pressure measured with the respect to the sea level pressure.Answer:
has no observable changes
Explanation:
number of atoms in 10090 g Ne (PLEASE HELP!!)
Answer:
3012.51×10²³ atoms of Ne
Explanation:
Given data:
Mass of Ne = 10090 g
Number of atoms = ?
Solution;
Formula:
Number of moles = mass/ molar mass
Molar mass of Ne = 20.17 g/mol
Number of moles = 10090 g/ 20.17 g/mol
Number of moles = 500.25 mol
Number of atoms:
1 mole contain 6.022×10²³ atoms
500.25 mol × 6.022×10²³ atoms / 1 mol
3012.51×10²³ atoms
1. How do you think shivering on a cold day helps
maintain internal body conditiona?
Answer:
shivering is a natural bodily response, the body is trying to heat itself up by moving around.
9) Given the reaction: N2(g) + O2(g) + 182.6 kJ → 2 NO(g) What is the heat of formation of nitrogen (II) oxide in kJ/mole? A) AH = -182.6 B) AH = -91.3 C) AH = 91.3 Show D) AH = 182.6
PLEASE HELP please
The heat of formation of nitrogen (II) oxide : +91.3 kJ/mol
Further explanationGiven
Reaction
N2(g) + O2(g) + 182.6 kJ → 2 NO(g)
Required
The heat of formation
Solution
In the above reaction, the heat of the reaction is located on the reactant side which indicates that the formation of nitric oxide requires heat (endothermic reaction).
In the above reaction the heat required to form 2 moles of NO, so the heat required for each mole is:
+182.6 kJ : 2 = =+91.3 kJ/mol
Can somebody help me answer this?
What three traits are used to classify organisms
hope this answer helps and have a good day
Silver metal can be prepared by reducing its nitrate, AgNO3 with copper according to the following equation:
Cu(s) + 2 AgNO3(aq) → Cu(NO3)2(aq) + 2 Ag(s)
What is the percent yield of the reaction if 71.5 grams of Ag was obtained from 127.0 grams of AgNO3 ?
%yield = 88.5%
Further explanationGiven
Reaction
Cu(s) + 2 AgNO₃(aq) → Cu(NO₃)₂(aq) + 2Ag(s)
Required
The percent yield
Solution
mol AgNO₃(MW=169,87 g/mol) :
= mass : MW
= 127 : 169.87
= 0.748
mol Ag from equation :
= 2/2 x mol AgNO₃
= 2/2 x 0.748
= 0.748
Mass Ag (theoretical) :
= mol x Ar Ag
= 0.748 x 108
= 80.784
% yield = (actual/theoretical) x 100%
%yield = 71.5/80.784 x 100%
%yield = 88.5%
The substance that is produced from a chemical reaction
•reactants
•chemical reaction
•atom
•product
•molecule
Answer - The substance that is produced from a chemical reaction....
REACTANTS
What are the answers to these?
Answer:
Answer at the bottom
Explanation:
A Be
B Li
C Mg
D Nahe answered their bottom
To investigate the reactivity of metals a student uses four metals. Each time they added 1 g of the metal to 25 cm³ of sulfuric acid and record the temperature change. Identify the control variables in this example
Answer:
Volume of the sulfuric acid (25cm³), same mass of each metal (1g)
Explanation:
In an experiment, the CONTROL VARIABLE also known as constant is the variable that is kept unchanged for all groups in an experiment. This is done in order not to influence the outcome of the experiment.
In this case, students are trying to investigate the reactivity of four different metals. They added 1 g of each metal to 25cm³ of sulfuric acid and recorded the temperature change. Based on the explanation of control variable above, the VOLUME OF SULFURIC ACID (25cm³) and the MASS OF EACH METAL (1g) are the CONTROL VARIABLES because they are the same or unchanged in this experiment.
ScF2 +
KBr ---->
KE +
ScBr2
Balanced equation :
ScF₂ + 2KBr ⇒ 2KF + ScBr₂
Further explanationGiven
Reaction
ScF₂ + KBr ⇒ KF + ScBr₂
Required
Balanced equation
Solution
1. Give coefficient
ScF₂ + aKBr ⇒ bKF + cScBr₂
Sc, left=1, right=c⇒c=1
F, left=2, right=b⇒b=2
K, left=a, right=b⇒a=b⇒a=2
The equation becomes :
ScF₂ + 2KBr ⇒ 2KF + ScBr₂
Which reaction will proceed most quickly or be the easiest?
A. Li and F
B. Li and CI
C. Nah and F
D. Na and CI
Answer:
C. Na and F
Explanation:
The reaction between Sodium and fluorine will proceed more quickly and easily of all the given reaction choices.
This is because fluorine is the most electronegative element and sodium is more electropositive when compared to Lithium.
This significantly large electronegativity difference between the atoms confers a high reactivity on both of them. In this reaction, an ionic bond forms by the virtue of sodium losing one electron to be gained by fluorine. This way both atoms becomes isoelectronic with Neon.Someone please help !
Can someone help me with these two questions