Answer:
Prisms are sometimes used for the internal reflection at the surfaces rather than for dispersion. If light inside the prism hits one of the surfaces at a sufficiently steep angle, total internal reflection occurs and all of the light is reflected.
Explanation:
Prism, in optics, piece of glass or other transparent material cut with precise angles and plane faces, useful for analyzing and reflecting light. An ordinary triangular prism can separate white light into its constituent colours, called a spectrum.
A 6.0-V battery does 1200 J of work transferring charge. How much charge is transferred?
answer is below!! hope this helped
A 6.0-V battery does 1200 J of work transferring charge, then 100C charge is transferred.
What is battery ?One or more electrochemical cells with external connections for powering electrical equipment make up an electric battery, which is a source of electric power.
A battery's positive terminal serves as the cathode and its negative terminal serves as the anode when it is delivering electricity.
Electricity is accepted, stored, and released on demand by batteries and similar devices. Like many other common energy sources, batteries store energy through chemistry in the form of chemical potential.
For instance, until they are burned, logs store energy in their chemical bonds for later conversion to heat.
V = 12 V
W = 1200 J
q = ?
V = W / q
12 = 1200 / q
q = 100 C
Thus, A 6.0-V battery does 1200 J of work transferring charge, then 100C charge is transferred.
To learn more about battery follow the link;
https://brainly.com/question/19225854
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Why is there a hole in the ozone layer? What do you think the consequences of that hole are?
Answer:
There is a ozone layer because of the special atomphere and chemical conditions that takes place there. I think the consequences of that home area is the very low winter temperatures.
Answer:
There is a hole in the ozone layer because of the pollution on earth. Because of that the UV rays are easily entering the earth through that portion. The consequences of this can be cancers, global warming and disastrous storms.
plz mark as brainliest
what is a molecule??
Answer:
molecule is a group of atoms bonded together representing the smallest fundamental unit of a chemical reaction
A 500-gram block of solid cheese is melted in a pot. Which is most likely be the mass of the cheese after it is melted?
pleaseeeeeeeeee answer
Answer:
due to the law of conservation of mass, the mass would stay the same.
In ADEF, the measure of F=90°, the measure of ZD=10, and EF = 94 feet. Find the
length of DE to the nearest tenth of a foot.
Answer:
answer. the measure. is f=90 the equbaliint is 180
Explanation:
yan ang sagot ko
Which feature separates watershed
Answer:
Ridges.
Explanation:
Watersheds are separated from one another by ridges. Ridges are elevated boundaries that divide watersheds.
before you retire in the evening, you sit down for a snack of milk and cookies. when you waken in the morning, you discover a carton of sour milk on the counter. knowing that milk sours if left in the refrigerator too long, has the reaction rate increased or decreased for the carton of milk on the counter? what has happened to its reaction time
Answer:
Increased
Explanation:
We know that the higher the temperature the higher the rate of reaction. This implies that as the temperature is increased, a reaction tends to proceed faster.
This follows from the collision theory, the higher the temperature, the higher the energy of the reacting particles hence they collide with each other faster and more effectively.
Thus the rate of reaction( or reaction time) for the carton of milk on the counter was increased.
Which of the nine substances are made of four elements?
Answer:
Oxygen mucury carbon dioxide and platinum
Explanation:
The change in water from the solid ice to a liquid is an example of a
Answer:
When solid ice gains heat, it changes state from solid ice to liquid water in a process called melting. Ice cubes in a cold drink, for example, gradually melt. This process is called evaporation. Water vapor (steam) mixes with the air and seems to disappear.
Answer:
melting
when solid ice gains heat, it changes state from solid ice to liquid water in a process called melting
this is correct answer
I hope it's helpful for u ...
ill give brainlist pls help me and don't guess I want full explanation please.
Answer:
C. 3
Explanation:
volume = length×width×height
3×3×3=27
Adolescents should be careful about what they eat beacause
Answer:
it can affect your growth, like it can stunt your growth and could get health problems. pls make me brainiest.
31. Solve this Gibbs' Free Energy Equation:
For a reaction at 200 K, the Delta H has a value of 250 kJ and the Delta S has a value of 0.100 kJ. 1s
the reaction spontaneous or not spontaneous?
Answer:The standard Gibbs energy change at 300K for the reaction 2A⇔B+C is 2494.
Explanation:
ΔG = free energy at any moment.
ΔGo = standard-state free energy.
R is the ideal gas constant = 8.314 J/mol-K.
T is the absolute temperature (Kelvin)
lnQ is natural logarithm of the reaction quotient
Directions: Show all of your work for each of the following problems.
3. What is the % Ba in Ba(NO3)2?
4. What is the % of each element in Ni3(PO4)2?
5. What is the % of each element in Al2(CrO4)3?
6. What is the % of each element in (NH4)2(SO4)?
Answer:
3.Ba=24.Ni=2...PO4=35.Al=3...CrO4=26.NH4=1...SO4=2Natasha is learning about density in science class. She has been given three different geometric shapes made from different substances and asked to determine which has the greatest density. She measures the masses of the objects and records her results in the table below
What should Natasha do next to determine the relative densities of the objec
A. She should measure the temperature of each object.
B. She should measure the volume of each object.
C. She should measure the surface area of each object.
D. She should measure the circumference of each object.
what is the grams of molar mass of magnesium
Answer:
4.0359398 × 10^-23 g
Explanation:
All explanations or thoughts led to that answer
Pls 50 points right answer gets brainliest
Explain the meaning of thermal energy transfer and give specific examples of conduction, convection, and radiation.
Answer:
thermal energy: the part of total internal energy that can be transferred (a portion of the kinetic energy)
heat is the thermal energy that flows from one substance to another due to a temperature difference.
Thermal energy is measured in temperature change.
Thermal energy transfer stops when thermal equilibrium is achieved (Both substances at the same temperature).
conduction: Transfer of thermal energy through a solid object like heat transferring up a metal spoon from a hot cup of coffee.
convection: the transfer of thermal energy due to the movement of a liquid or gas caused by differences in temperature. Only in a fluid (liquid or gas). Breezes, ocean currents.
radiation: Transfer energy with or without matter. Warming from the Sun, microwave oven.
Answer:
Conduction is the transfer of thermal energy through direct contact. Convection is the transfer of thermal energy through the movement of a liquid or gas. Radiation is the transfer of thermal energy through thermal emission. Hope this helps!
Explanation:
Organisms are classified into different kingdoms based on?...
Answer:
Food and cell type
Explanation:
Kingdoms are by far the most basic legal structure for living objects. Living objects are classified into realms depending on how they consume food, the kinds of cells that produce their bodies, and the total type of tissue in their bodies.
Shauna is looking over her family history for heart disease and thought about the easiest way to represent what she discovered. What model is used to show the pattern of traits that are passed from one generation to the next in a family?
dichotomous key
pedigree chart
line graph
punnett square
The data shows the number of humans and western pond turtles in a particular county.
800
700
600
500
400
300
200
100
1987
1990
07
1960 1970
1980
number of western pond turtles
human population (in thousands)
What can be inferred about the turtle population?
The turtle population decreases as a result of less livable space.
O The turtle population moves to a new county due to a fear of humans.
The turtle population decreases as a result of natural disasters.
The turtle population moves to a new county due to a change in the climate.
What volume of Nitrogen measured at s.T.P. Will be produced on heating 33.8g of calcium trioxonitrate
Answer:
9.2288 L
Explanation:
The equation of the reaction is given as;
2 Ca(NO3)2 → 2 CaO + 4 NO2 + O2
From the reaction;
2 mol of Ca(NO3)2 produces 4 mol of NO2
Converting 33.8g to Number of moles;
Number of moles = Mass / Molar mass
Number of moles = 33.8 g / 164.088 g/mol
Number of moles = 0.206 mol
2 = 4
0.206 = x
Solving for x;
x = 0.206 * 4 / 2
x = 0.412 mol
At STP;
1 mol = 22.4 L
0.412 mol = x
Solving for x;
x = 0.412 * 22.4 = 9.2288 L
1 mole of any gas is equivalent to?
Answer:
22.4 L at standard temperature and pressure.
differentiate between hypothesis and Theory
Answer:
A
Explanation:
edge
Which of the following is equal to one molecule of calcium atoms?
6.022x10^23 molecules of Ca
6.022x10^23 atoms of Ca
6.022x10^20 molecules of Ca
6.022x10^22 atoms of Ca
Answer:
https://download.cnet.com/1-Click-Answers/3000-2378_4-10060189.html
Explanation:
Answer:
6.022x10^23 atoms of Ca
Explanation:
why is chemistry a science
Answer:
Explanation:
Chemistry is often referred to as the central science because it joins together physics and mathematics, biology and medicine, and the earth and environmental sciences. Knowledge of the nature of chemicals and chemical processes therefore provides insights into a variety of physical and biological phenomena.
Answer:
Science chemistry is the investigation of issue, examining its design, properties and conduct to see what happens when they change in substance responses. Thusly, it very well may be viewed as a part of actual science, close by stargazing, physical science and studies of the planet including geography.
Explanation:
.Science chemistry is fundamental for meeting our essential requirements of food, clothing, cover, wellbeing, energy, and clean air, water, and soil. Substance advances improve our personal satisfaction in various ways by giving new answers for issues in wellbeing, materials, and energy use.
Here are the absolute best motivations to concentrate on science.
,Science assists you with figuring out your general surroundings. ...
,,Essential information on science assists you with perusing and
comprehend item marks.
,,,Science can assist you with pursuing informed choices. ...
,,Science is at the core of cooking. ...
,,,An order of science can assist with guarding you
helpppppppppppppp!!!!!!!!!!!!!how did chlorine atom attain saturation in potassium chloride and oxygen dichloride
When naming an acid, which of the following is true?
chlorite changes to chloric acid
chlorate changes to chloric acid
none of these is true
chlorate changes to chlorous acid
Answer:
chlorate changes to chlorous acid
Which element would be the most suitable to make a spoon that will melt in
your hot drinks?
A) aluminium
melting point: 660°C
boiling point: 2470°C
B) argon
melting point: -189°C
boiling point:-186°C
C) bromine
melting point: -7°C
boiling point: 59°C
D) gallium
melting point: 30°C
boiling point: 2400°C
E) lithium
melting point: 180°C
boiling point: 1330°C
F)mercury
melting point: -39°C
boiling point:357°C
Answer:
it's A) or E)
others are not suitable cuz their melting point is weak.
Answer:
Gallium
Explanation:
Because the melting point is low and the drinks are usually around 60-70 degrees Celsius so it wil melt
When does the energy in the H atom get closer
Answer:
3.48 g
Explanation:
Because its useful.
Antacid has a pH of 11. What does that tell you about its concentration of hydrogen ions? What does that tell you about its concentration of hydroxide ions?
Answer: The concentration of hydrogen ions is [tex]10^{-11}M[/tex] and the concentration of hydroxide ions is [tex]10^{-3}M[/tex]. Thus the concentration of hydroxide ions is more than the concentration of hydrogen ions.
Explanation:
pH or pOH is the measure of acidity or alkalinity of a solution.
pH is calculated by taking negative logarithm of hydrogen ion concentration.
[tex]pH=-\log [H^+][/tex]
[tex]pOH=-\log[OH^-][/tex]
Putting in the values:
[tex]11=-\log[H^+][/tex]
[tex][H^+]=10^{-11}M[/tex]
[tex]pH+pOH=14[/tex]
[tex]pOH=14-11=3[/tex]
[tex]3=-log[OH^-][/tex]
[tex][OH^-]=10^{-3}M[/tex]
Thus the concentration of hydroxide ions is more than the concentration of hydrogen ions.
I am so lost. Does anyone know how to do this??? Enthalpies of reaction stuff
C2H4(g)+3O2(g)→2CO2(g)+2H2O(l) ΔH∘1=?
The combustion of C2H4(g) is represented by the equation above.
(a) Use the enthalpies of formation in the table below to calculate the value of ΔH∘1 for the reaction.
ΔH∘f(kJ/mol)
C2H4(g) 52
CO2(g) −394
H2O(l) −286
O2(g) 0
Please help!!! :(
Answer:
-1464 kJ/mol
Explanation:
The balanced equation for the reaction is given as;
C2H4(g)+3O2(g)→2CO2(g)+2H2O(l) ΔH∘1=?
The enthalpy of the reaction is given by the equation;
Enthalpy of reaction = Enthalpy of products - Enthalpy of reactants
Products:
2CO2(g)+2H2O(l)
Enthalpy of Products = 2 (−394) + 2(−286)
Enthalpy of Products = -1360 kJ/mol
Reactants:
C2H4(g)+3O2(g)
Enthalpy of Reactants = 2 (52) + 3(0)
Enthalpy of Reactants = 104 kJ/mol
Enthalpy of Reaction = -1360 - 104 = -1464 kJ/mol