Answer:
What forms of energy does a burning candle give out?
The burning candle is converting chemical energy—stored in the hydrocarbon bonds in the wax—into thermal (heat) and radiant (light) energy.What questions do you have about energy?
Can momentum be hidden to human eyes like how kinetic energy can be hidden as heat?Can you go fast enough to get enough mass to become a black hole?How can a material at a certain temperature have all of its molecules at the same energy?How can we travel to the past?Which statements explain the relationship between mass, velocity and kinetic energy? Select the TWO (2) that apply.
Consider the equation to calculate kinetic energy: KE = ½mv2
Kinetic energy decreases if either the mass or the velocity of the object decreases or if both decrease.
Kinetic energy decreases if either the mass or the velocity of the object increases or if both increase.
Kinetic energy increases if either the mass or the velocity of the object decreases or if both decrease.
Kinetic energy increases if either the mass or the velocity of the object increases or if both increase.
Answer:
I think D
Explanation:
Kinetic energy has a direct relationship with mass, meaning as mass increases so does the kinetic Energy of an object.
The same amount of heat is added to a 10-g sample of each of the following metals. If each metal is initially at 20.0°C, which metal will reach the highest temperature? show your work
A. gold 0.129 J/(g °C)
B. beryllium 1.82 J/(g °C)
C. calcium 0.653 J/(g °C)
D. copper 0.385 J/(g °C)
Answer: A
Explanation:
A
Heat is the product of the mass, specific heat, and delta temperature. The gold metal will reach the highest temperature. Thus, option A is correct.
What is specific heat?Specific heat (c) is the heat required by a substance to get heated a unit mass by a unit of temperature. The specific heat is given as,
[tex]\rm c = \rm \dfrac{Q}{m \times \Delta T}[/tex]
Here, Q is the heat applied, m is the sample's mass and delta T is the change in the temperature.
The value of heat applied is the same for all the metals, so a change in temperature is calculated as,
[tex]\rm \Delta T = \rm \dfrac{Q}{c . m }[/tex]
From this, it can be said that the temperature is inversely related to the specific heat of the metal and hence the metal having the smallest c will have the highest change in the temperature.
Therefore, gold (c = 0.129 J/(g°C)) will reach the highest temperature.
Learn more about specific heat here:
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Can someone pls give me the answer to this?
Answer:
2
Explanation:
Answer:
option 2
Explanation:
because its progressing! hope this helps :)
What is the IUPAC name for Ester with 9 carbon atoms ?
Explanation:
[tex]CH _{3}CH _{2}COOCH _{2} CH _{2}CH _{2}CH _{2}CH _{2}CH _{3}[/tex]
NAME: Hexylpropenoate
Silver is a conductor. *
Is it true or false
Answer:
True
Explanation:
Answer:
True.
Explanation:
Silver is a good conductor of electricity because the atoms have many electrons that can be moved.
How many total atoms make up the chemical formula Ca3( PO4)2
12
13
11
10
Answer:
The total atoms present in the chemical formula is 13
Explanation:
Please help fast I will give brainliest
Answer:
B.
Explanation:
Define ductility.
Ty!!
Explanation:
Ductility is the ability of a material to be drawn or plastically deformed without fracture. It is therefore an indication of how ‘soft’ or malleable the material is. The ductility of steels varies depending on the types and levels of alloying elements present. An increase in carbon, for example, will increase the strength but decrease the ductility.
Answer:
ductility of a metal able to be drawn out into a long thin wire.
When water changes from gas to liquid, the: color of the water remains the same volume of the water remains the same mass of the water remains the same
Answer:
color of water remains same
PLEASE ANSWER ASAP!
The number placed in front of a formula is called a coefficient. The small number within a chemical formula is called a subscript. Why do we adjust coefficients when balancing chemical equations and not subscripts?
[tex]\huge \boxed{\mathcal {\gray { A nswer :}}}[/tex]
While balancing the chemical equations, the sub scripts aren't changed because by changing sub script we actually change the compound formed, hence coefficients are changed so the compound remains the same.
for example : ( for understanding )
in balancing the given reaction,
H2 + O2 =》H2O
if we change Oxygen's sub script in " H2O "
we get,
H2O + O2 =》H2O2
but here the compound formed isn't water, it is "H2O2" (hydrogen peroxide), so we can't change the sub script.
but by changing the coefficient, we get :
2 H2 + O2 =》2 H2O
Water evaporates from oceans, lakes, streams, plants and even soil.
TRUE or FALSE
Answer:
True
Explanation:
Question 1 of 10
Which two factors affect the amount of thermal energy an object has?
A. The directions in which its particles are moving
B. The mass of the object
O C. The amount of motion its particles have
D. The amount of space between its particles
Answer:
b, and d
Explanation:
because it makes the most sense I might be wrong
how mutch heat do you use to evaporerate warter
Answer:
Water's heat of vaporization is around 540 cal/g at 100 °C. The same amount of heat is exchanged or released in the phase shift during the condensation of 1 g water vapor to 1 g of water.
Explanation:
brainliest?
waters boiling point is 212F or 100C
A scientist is comparing samples of intrusive and extrusive igneous rock. Describe one way the samples are alike and one way they are different
Answer:
Explained below
Explanation:
They are different simply in terms of how they are formed. An intrusive igneous rock is formed as a result of magma being pushed into the rock right below the earth's surface while an extrusive rock is formed as a result of lava erupting onto the surface of earth.
Both rocks are similar in terms of appearance because they both have crystals. Intrusive has large crystals while extrusive has small crystals.
Decane (C10H22) can be split into propene (C3H6) and heptane (C7H16) by cracking
. These 3 molecules can all be described as ..
A. alkanes
B. alkenes
C. monomers
D. hydrocarbons
Answer:
Hydrocarbons
Explanation:
They all are made up of only carbon and hydrogen atoms, so they're organic molecules known as hydrocarbons. Decane and Heptane are alkanes, Propene is an alkene.
QUESTION: What is the main function (job) of the Nervous System?
A. The nervous system controls the breakdown of food into small molecules, which are then absorbed into the body.
B. The nervous system's main job is to move fresh air into your body while removing waste gases.
C. The nervous system controls everything you do, including breathing, walking, thinking, and feeling.
D. The nervous system carries oxygen, nutrients, and hormones to cells, and removes waste products, like carbon dioxide.
Answer:
It is C
Explanation:
it sends signals to the brain so it would be C
Answer:
C. The nervous system controls everything you do, including breathing, walking, thinking, and feeling.
is the answer
How many atoms in 13.88 mole of lead? (Round to 3 sig figs)
Answer:
8.36 x 10^24 atoms/molecules
Explanation:
Avagadro's Number: 6.02214076 × 10^23
Avagadro's Number shows the number of molecules in 1 mole of substance. In this case, if there is 13.88 moles of lead, we multiply 13.88 by Avagadro's number:
(6.02214076 × 10^23)(13.88) = 8.358536 x 10^24 = 8.36 x 10^24
Calculate the [H+], pOH, and [OH-] for the following solutions: SHOW WORK And put Answers for concentration[ ] in scientific notation. ( see video for help)
pH 2.90 (the approximate pH of lemon juice
pH 3.86 (the approximate pH of sauerkraut)
pH 10.81 (the approximate pH of milk of magnesia)
pH 4.11 (the approximate pH of orange juice)
pH 11.61 (the approximate pH of household ammonia)
The pH of human blood ranges from 7.35 to 7.45 with it usually being around 7.40. If the blood pH gets below 7.35 a person goes into acidosis. If the pH gets above 7.45 a person goes into alkalosis. Both acidosis and alkalosis can be fatal. How much more acidic is a person’s blood if it has a pH of 7.3 compared to its preferred 7.4? How much more alkaline is a person’s blood if it has a pH of 7.6 rather than its preferred 7.4?
Answer:
Explanation:
pH = -log{H+]
{H+} = 10^(-pH)
pOH = 14 - pH
{OH-} = 10^(-pOH)
pH 2.90 (the approximate pH of lemon juice
{H+} = 10^(-2.9)
pOH = 14 - 2.9 = 11.1
{OH-} = 10^(-pOH) = 10^(-11.1)
pH 3.86 (the approximate pH of sauerkraut)
{H+} = 10^(-3.86)
pOH = 14 - 3.86 = 10.14
{OH-} = 10^(-pOH) = 10^(-10.14)
pH 10.81 (the approximate pH of milk of magnesia)
{H+} = 10^(-10.81)
pOH = 14 - 10.81 = 3.19
{OH-} = 10^(-pOH) = 10^(-3.19)
pH 4.11 (the approximate pH of orange juice)
{H+} = 10^(-4.11)
pOH = 14 - 4.11 = 9.89
{OH-} = 10^(-pOH) = 10^(-9.89)
pH 11.61 (the approximate pH of household ammonia)
{H+} = 10^(-11.61)
pOH = 14 - 11.61 = 2.39
{OH-} = 10^(-pOH) = 10^(-2.39)
Reaccion de obtencion del oxido correspondiente al elemento quimico Z= 19. Balancea la reaccion y nombra los reactivos y el producto formado
Answer:
4K + O₂ → 2K₂O
Los reactivos son: Potasio, Oxígeno, y óxido de potasio
Explanation:
El elemento químico número 19 es el potasio, un metal alcalino (Los metales alcalinos tienen estado de oxidación +1).
El óxido correspondiente debe tener fórmula K₂O (Oxígeno con carga -2 y 2 átomos de potasio con carga +1 dan el óxido neutro). La reacción es:
4K + O₂ → 2K₂OLos reactivos son: Potasio, Oxígeno, y óxido de potasioHelp please, and thank you.
A jet stream is a belt of wind in the upper atmosphere that blows around the Earth from west to east.
How is the jet stream related to the wind direction on the ground?
(PLATO)
Answer:
photo isn't clear, first of all click the clear photo
Answer:
b
Explanation:
This type of bonding can be found in substances that are solids at
room temperature.
Select one:
O a. metallic
O b. ionic
O c. covalent
O d. not enough information
what is a soluble compound that reacts with acid to produce carbon dioxide?
Explanation:
like all metals,calcium carbonate reacts with acidic solution to produce carbon dioxide
¿Qué es una fuente de luz primaria?
Answer:
Las fuentes de luz primarias son aquellas que emiten la luz que producen. Por ejemplo: la luz de Sol, un relámpago, la de una vela,...
A su vez las fuentes primarias las podemos clasificar en: fuentes naturales y fuentes artificiales
Explanation:
Help me get it right and no links
Answer:sorry
Explanation:
Answer:
C
Explanation:
C, because unlike A and B, it's an improvement in human population. And D wouldn't really be classified as an improvement as it states "Population has not decreased or increased significantly."
What kind of changes contribute to spontaneity?
A. Reduced randomness
B. An increase in entropy
C. An increase in enthalpy
D. Absorbed heat in a reaction
Answer:
An increase in entropy
Explanation:
Doing the same question hope this helps
True or False: A second tidal bulge forms on the side of Earth opposite the moon because the moon's gravity pulls Earth away from the water.
A second tidal bulge forms on the side of Earth opposite the moon because the moon's gravity pulls Earth away from the water, which is false as the second tidal bulge is not caused by the moon's gravity pulling the Earth away from the water but rather is a result of the centripetal force caused by the rotation of the Earth-Moon system.
What is the tidal force?Tidal bulges are caused by the gravitational forces of the moon and the sun on the Earth's oceans. The gravitational force of the moon is stronger on the side of the earth facing the moon than on the side facing away from the moon. This creates a tidal bulge on the side of the earth facing the moon. However, there is also a second tidal bulge that forms on the side of the earth opposite the moon.
Hence, a second tidal bulge forms on the side of Earth opposite the moon because the moon's gravity pulls Earth away from the water, which is false as the second tidal bulge is not caused by the moon's gravity pulling the Earth away from the water but rather is a result of the centripetal force caused by the rotation of the Earth-Moon system.
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If a baker making chocolate chip cookies accidentally misreads a recipe and adds something extra, forgets to add something, or adds the wrong ingredient, what can happen to the cookies?Explain how this analogy can be used to describe a mutation.
Answer:
See Explanation
Explanation:
Genetic mutation refers to the alteration of the sequence of bases in the gene of an organism. Recall that the gene contains sensitive information about the characteristics of an organism.
There are three types of genetic mutation which includes; base substitutions, deletions and insertions.
Using the analogy of the baker stated in the question, if he forgets to add something, then a part of the recipe has been deleted. This is analogous to the omission or deletion of a base in the sequence leading to mutation.
An additional or extra ingredient may be added to the recipe. This is analogous to insertion of a new base into the sequence leading to mutation.
If the baker adds a wrong ingredient instead of what he is supposed to add, this is analogous to substitution of a base by another leading to mutation.
In each of these cases, the taste of the cookies is marred. The baker can never produce the same taste of cookies exactly as described by the recipe book. This means that insertions, deletions and substitution of bases produce a new genetic code that is different from the original genetic code. This is referred to as genetic mutation.
Help me please!!!!!!!!
Answer:
4.00
Explanation:
The teacher puts you in charge of measuring the pH of a marked solution of 0.0050 M HCL. What is the pH of this
solution?
HELP PLZZZ!!!
Answer: The pH of given solution is 2.3
Explanation:
It is given that the concentration of HCl solution is 0.005 M.
pH is the negative logarithm of concentration of hydrogen ions.
[tex]pH = -log [H^{+}][/tex]
Substitute values into the above formula as follows.
[tex]pH = -log [H^{+}]\\= - log (0.005)\\= 2.3[/tex]
Thus, we can conclude that the pH of given solution is 2.3
Can someone tell me how to draw a atomic model for Cd please helpppppp
Answer:
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