Which statement is true?
1. Heat refers to a process.
2. Thermal energy refers to a process.
3. Thermal energy refers to a single particle.
4. Heat refers to a quantity.
Answers
Answer:
4. Heart refers to a quantity
Answer:
Heat Refers To A Process
Related Questions
water and development are substitute of one another.
explanation with it, please
Answers
sodium chloride + water = ?
which product will it form,and in which phase is it?
Answers
Water molecules pull the sodium and chloride ions apart, breaking the ionic bond that held them together.
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Which of the following describes a limiting reactant? Question 10 options: A) The reactant that runs out last and limits how much product can be made B) The reactant that is present at the smallest mass C) The reactant that runs out first and limits how much product can be made D) An inert element
Answers
Answer:
The correct choice is option C) The reactant that runs out first and limits how much product can be made
Explanation:
The limiting reactant is a reactant in a chemical reaction that gets consumed first and thus limits how much product can be formed.
Answer:
The reactant that runs out first and limits how much product can be made
Explanation:
All three states of matter can be ____________ or a solvent in a solution.
Answers
All three states of matter can be “solute” or a solvent in a solution.
As the mass of the nucleus increases, what happens to the ratio of neutrons to protons in stable isotopes? A. The neutron:proton ratio decreases. B. The neutron:proton ratio increases. C. The neutron:proton ratio remains 1:1. D. The neutron:proton ratio remains 1.5:1.
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URGENT PLEASE HELP 25 POINTS!!!
A generator produces 5 megawatts (MW) of power. How many watts (W) are produced?
Answers
Explanation:
it would have been easier and faster to just look it up on the internet.
this is like in the computer world too (for storage and memory sizes) .
we typically use "kilo", "mega", "giga", "tera", ... to express large quantities.
kilo means 1000
mega means million (1000000)
giga means billion (1000000000)
and so on
so, 5 MW are 5 million Watts. or 5000000 Watts.
Classify HBr as a strong acid or a weak acid.
Strong Acid or Weak Acid?
Answers
What is the balanced form of the chemical equation shown below?
Cr(s) + Cl2(g) → CrCl3(s)
Answers
The balanced equation for the chemical equation given in the question above is: 2Cr(s) + 3Cl₂(aq) → 2CrCl₃(s)
How do i balance equation?The following data were obtained from the question:
Cr(s) + Cl₂(aq) → CrCl₃(s)Balanced equation =?Chemical equations are generally balanced by ensuring that the number of atoms of each element present on both sides of the equation are equal.
Now, we shall balance the equation given from the question as follow:
Cr(s) + Cl₂(aq) → CrCl₃(s)
There are 2 atoms of Cl on the left side and 3 atoms on the right side. It can be balanced by writing 2 before CrCl₃ and 3 before Cl₂ as shown below:
Cr(s) + 3Cl₂(aq) → 2CrCl₃(s)
There are 2 atoms of Cr on the right side and 1 atom on the left side. It can be balanced by writing 2 before Cr as shown below:
2Cr(s) + 3Cl₂(aq) → 2CrCl₃(s)
Thus, the equation is balanced.
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neutralisation reactions worded formula
Answers
Answer:
Hydrochloric acid + sodium → sodium chloride + water
NaOH +HCl → H2O and NaCl
Explanation:
salt is a neutral ionic compound. Let's see how a neutralization reaction produces both water and a salt, using as an example the reaction between solutions of hydrochloric acid and sodium hydroxide. The overall equation for this reaction is: NaOH +HCl → H2O and NaCl.
2 Write the molecular formula of the compounds given below: Sodium hydrogen carbonate b) calcium hydroxide ) silver nitrate d) ammonium sulphate ) Magnesium carbonate f) Ferric oxidea
Answers
[tex]\\ \rm\Rrightarrow Sodium\:Hydrogen\:carbonate=NaHCO_3[/tex]
[tex]\\ \rm\Rrightarrow Calcium\:Hydroxide=Ca(OH)_2[/tex]
[tex]\\ \rm\Rrightarrow Silver\:Nitrate=Ag(NO_3)_2[/tex]
[tex]\\ \rm\Rrightarrow Ammonium\:Sulphate=(NH_4)_2SO_4[/tex]
[tex]\\ \rm\Rrightarrow Ferric\:oxide=Fe_2O_3[/tex]
cho 6,5 g Zn tác dụng với dung dịch chứa 12g HCl. Thể tích khí H2 ( ở đktc ) là
Answers
Answer: nHCl = 12/36,5= 0,38(mol)
nZn = 6,5/65 = 0,1(mol)
Ta có pt: Zn + 2HCl --> ZnCl2 + H2
Vì 2n Zn = 0,2 < n HCl = 0,38 nên HCl dư
Theo PTHH :
n H2 = n Zn = 0,1(mol)
V H2 = 0,1.22,4 = 2,24(lít)
Explanation:
what is speed and velocity
Answers
Answer:
The distance covered by the body per unit time is called speed.
A distance travelled by the body per unit time in a fixed direction is called velocity
I hope this help u:)
Answer:
Force is an external agency that changes or tends to change the state of a body from rest to motion or from motion to rest is called force
Explanation:
The distance covered by a body in a unit time is called speed
phóng xạ và phân hạch hạt nhân
Answers
I am from Nepal i don't know this language
4
D:
According to the phase diagram for H20, what happens to the phases of
water at 1 atm pressure as the temperature is increased from-10-C to 1102
Water
liquid
Pressure (atm)
0.5
025-
Ice
(solid)
Water vapor
(gas)
0
Temperature (°C)
O A. Water changes from a liquid to a gas to a solid
O B. Water changes from a gas to a liquid to a solid.
O C. Water changes from a solid to a liquid to a gas.
O D. Water changes from a solid to a gas to a liquid
Answers
Answer:
D
Explanation:
water changes
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According to the phase diagram for H[tex]_2[/tex]O, Water changes from a solid to a gas to a liquid at at 1 atm pressure as the temperature is increased from-10°C to 110°C. Thus, the correct option is option D.
A phase diagram is a type of graph used to display the conditions during which thermochemical distinct phases occur as well as coexist at equilibrium in physical chemistry, technology, mineralogy, as well as materials science.
Phase changes take place along equilibration lines. According to the phase diagram for H[tex]_2[/tex]O, Water changes from a solid to a gas to a liquid at at 1 atm pressure as the temperature is increased from-10°C to 110°C.
Therefore, the correct option is option D.
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Assertion (A): An orbital cannot have more than two electrons, moreover, if an orbital has two electrons they must have opposite spins.
Reason (R): No two electrons in an atom can have the same set of all the four quantum
numbers.
a) Both A and R are true and R is the correct explanation of A.
b) Both A and R are true but R is not the correct explanation of A.
c) A is true but R is false.
d) Both A and R are false.
pls answer
Answers
Answer:
the correct answer is option ( A )
Both A and R are true and R is the correct explanation of A.
Explanation:
hope it helps you
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Can you help me on this. I will support your correct answer
Answers
Zinc+ sulphuric acid= Zinc sulphate
Magnesium chloride, Magnesium nitrate, magnesium sulphate
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What can cause water to change to a different state or phase?
A. a change of volume
B. a change in temperature
Answers
B change in temperature
Identify each of the highlighted materials as an element, a compound, or a mixture, and explain your reasoning.
Answers
Answer:
These are compounds.
Explanation:
As it is formed by chemically bonding of two elements C ( carbon) and H (hydrogen) .
Its not a mixture because mixture is Just dispersed of diferrent elements or a compound which are not in fix ratioAnswer:
Butane and benzene are both compounds. They contain multiple elements bonded together in a specific ratio. Kerosene and gasoline are mixtures because they are combinations of several compounds. Oxygen is an element because it is made up of only one type of atom.
Explanation:
What is cell wall? Where is it found?
Answers
Answer:
A cell wall is a fairly rigid layer surrounding a cell located outside of the plasma membrane that provides additional support and protection. They are found in bacteria, archaea, fungi, plants, and algae. Animals and most other protists have cell membranes without surrounding cell walls.
Explanation:
please answer correctly.
Answers
Answer: i dont know but yu got it
Explanation:
1. what is hard water.
2. Mention four sources of water.
3. write down the chemical formula of water.
4. What is purification of water.
5. Mention two importance of purification of water.
6. Mention 4 method used ot purify water. 7. Mention 4 impurities found in water.
8. Explain the term contaminated of water.
9. State two physical properties of water. 10. mention the names of of the elements that causes hardness in water.
Answers
Explanation:
Hard water is a type of water that can not easily lather with soap. Springs, wells, pipe-borneH20. The 2 is in basePurification of water is the cleansing of water to avoid diseases, germs, bacteria. To prevent diseases, to make the water safe for drinkingBoiling,chlorination, distillationSorry about number seven! This is when water is unsafe or dirty, it cannot be used for the purpose for which it is intended Water is tasteless, water is colourlessCalcium tetraoxosulphate(vi), Magnesium tetraoxo sulphate (vi) and Calcium hydrogen trioxocarbonateMention the four characterstics of warm blooded animals.
Answers
Answer:
The four characrteristics of warm blooded animals are÷
Explanation:
i=They can keep its body temperature the same no matter what the outside temperature .
ii=They can maintain a constant body temperature.
iii=They obtain energy from food consumption.
iv=They maintain their body temperature higher than environment.
Answer:
i) Their body temperature remain constant in any climate.
ii) They obtain energy from food consumption
I only know this much:)
The graph below shows how solubility changes with temperature.
A graph with the horizontal axis showing temperature ranging from 0 to 10 in units of 10 and the vertical axis solubility in grams of salt per 100 grams of water. Several compounds are shown. All data are approximate. The substances and their coordinates are as follows: upper N a upper C l: 0, 38; 10, 38; 20, 38; 30, 38; 40, 39; 50, 39; 60, 39; 70, 40; 80, 40; 90, 40; 100, 40. Upper N a subscript 2 upper H upper A s upper O subscript 4: 0, 5; 10, 18; 20, 28; 30, 39; 40, 49; 60, 65; 80, 82. Upper B a (upper N upper O subscript 3) subscript 2: 0, 5; 10, 8; 30, 12; 40, 15; 50, 18; 60, 20; 80, 28; 100, 33. Upper N a subscript 2 upper S upper O subscript 4: 0, 5; 5, 8; 10, 10; 15, 15; 20, 20; 25, 20; 28, 35; 30, 40; 32, 49; 33, 50; 35, 50; 40, 48; 50, 47; 60, 46; 70, 45; 80, 43; 90, 32; 100, 40. Upper C 3 subscript 2 (upper S upper O subscript 4) subscript 3 dot 9 upper H subscript 2 upper O: 0, 18; 20, 10; 30, 8; 50, 5; 60, 3; 80, 1; 100, 0.
How many grams of NaCl will be needed to form 600 mL of a saturated solution at 100°C?
15 g
24 g
40 g
240 g
answer 240g
Answers
The amount of NaCl required to prepare a 600 mL saturated solution depends on the solubility at the temperature.
What is solubility?Solubility is the amount of solute that dissolves in a given volume of solvent.
Solubility = amount of solute/volume of solvent oSolutions may be saturated, unsaturated, super saturated solution.
For solutes, the solubility increases with increase in temperature.
The amount of NaCl required to prepare a 600 mL saturated solution depends on the solubility at the temperature.
Learn more about solubility at: https://brainly.com/question/23946616
Answer:
240
Explanation:
why do scientist need govermental funding
Answers
Define force and speed
Answers
Force = The external energy that changes or tends to change the state of any body or object is called force.
Speed = The rate of distance is called speed.
Answer:
Force is a push or pull which changes or tend to change the position of a body.
The rate of change its position with time or magnitude is called speed.
Differentiate between emperical and
molecular formula. Give an example of
a substance having different emperical
and molecular formula
Answers
Answer:
Here’s an example:
CH (methylene) is the empirical formula.
C2H2 is a molecular formula. It is a gas called Ethyne.
C8H8 is an oily liquid called Styrene. It is also a molecular formula.
Now compare: even though the empirical formula for these compounds is the same, they have different molecular formulas and different properties.
Explanation:
Some background information:
The empirical formula is the formula with the lowest whole number ratio of an element in a compound. A molecular formula is the chemical formula of a (molecular) compound. The molecular formula gives us the exact number of atoms or moles in that compound.
I have attached pictures for a better understanding of the empirical formula.
can you answer with working out
Answers
por que existen diferencias en el consumo del agua de las personas?
Answers
Las diferencias entre el consumo de agua existen debido a que varios factores externos inciden en este proceso de ingesta de agua.
El agua es un compuesto químico que es vital para la vida de los seres vivos. En el caso de los humanos es necesario tomar agua para evitar la deshidratación y activar muchos procesos naturales del cuerpo.
La cantidad de agua que debe tomar un humano depende de varios factores como:
La temperatura del lugar en el que esté, si está en un lugar con mayor temperatura la sudoración hará que requiera más agua.La cantidad de actividad física que realiza, entre más actividad física se eliminan más líquidos corporales por medio del sudor.La salud, cuando tiene alguna enfermedad como diarrea o vómito puede perder líquido más rápidamente.Embarazo y lactancia, las mujeres en estado de embarazo y lactancia deben tomar más agua dado que un porcentaje del agua de su cuerpo se va para el consumo de su hijo.Incluso la cantidad de agua de agua puede variar dependiendo del peso de cada persona, aquellas personas que pesan más deben beber más agua, que aquellas que tienen menor peso debido a que la cantidad de agua debe ser proporcional a su peso.
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What is the voltage of an electrolytic cell with nickel and copper electrodes?
A. -0,09 V
B. 0.59 V
C. 0.09 V
D. -0.59 V
SUBMIT
Answers
Answer:
The answer is D. -0.59V
Explanation:
Answer:
-.59v
Explanation:
Which option describes the structure of the electron shells in a neutral carbon atom? (1 point)
O The inner shell is complete with four electrons. The outer shell is incomplete with two electrons.
O The inner shell is incomplete with three electrons. The outer shell is incomplete with three electrons.
O The inner shell is complete with three electrons. The outer shell is incomplete with three electrons.
O The inner shell is complete with two electrons. The outer shell is incomplete with four electrons.
Answers
Answer:
The inner shell is complete with two electrons. The outer shell is incomplete with four electrons.
Explanation:
There can only be 2 electrons on the first (inner) shell, so it would be complete with two and there needs to be 8 electrons on the outer shell for it to be complete, so it would be incomplete with 4.
Hope this helps :)
Answer:
(Question 1) Metallic bonds are responsible for many properties of metals, such as conductivity. Why is this possible?
(Answer) The bonds can shift because valence electrons are held loosely and move freely.
(Question 2) Between which types of elements do ionic bonds occur, and how do electrons act within the bond?
(Answer) metals and nonmetals, electrons transferred
(Question 3) Which kind of bond would occur between sodium (Na, Group IA) and chlorine (Cl, Group VIIA)?
(Answer) ionic
(Question 4) Why is carbon said to provide a “backbone” in many molecules?
(Answer) Carbon atoms can form chains and branches with each other, and other atoms can attach to these.
(Question 5) Which option describes the structure of the electron shells in a neutral carbon atom?
(Answer) The inner shell is complete with two electrons. The outer shell is incomplete with four electrons.
Explanation:
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