Answer:
364 K or 91°C
Explanation:
Applying,
V₁/T₁ = V₂/T₂................ Equation 1
Where V₁ = Initial Volume, V₂ = Final volume, T₁ = initial Temperature, T₂ = final Temperature.
make T₂ the subject of the equation,
T₂ = V₂T₁/V₁................. Equation 2
From the question,
Given: V₁ = 375 mL, V₂ = 500 mL, T₁ = 0.0°C = (273+0) K = 273 K
Substitute these values into equation 2
T₂ = (500×273)/375
T₂ = 364 K
T₂ = (364-273) °C = 91 °C
Balancing Equations help (please explain)
Answer:
A balanced equation is an equation for a chemical reaction in which the number of atoms for each element in the reaction and the total charge is the same for both the reactants and the products. In other words, the mass and the charge are balanced on both sides of the reaction.
Explanation:
Which value is most likely to be the pH of a salt that is formed by the reaction of a weak acid and a strong base?
O 2.0
O 6.8
07.0
O 8.7
Please help there are so many different answers which one is right
Answer:
8.7
Explanation:
A weak acid and a strong base will form a more basic salt.
2.0 is more acidic, you'll usually see this from a reaction between a strong acid and a weak base.
6.8 and 7.0 are neutral (or close to neutral) and are formed from reactions between weak acids and weak bases, or strong acids and strong bases.
Which statements correctly describe the process of nuclear fusion? It happens only to large atoms. It occurs naturally in the Sun. It releases a large amount of energy. It bonds atoms together to create molecules. It involves the joining of two atomic nuclei.
Answer:
-It occurs naturally in the Sun.
-It released a large amount of energy.
-It involves the joining of two atomic nuclei.
It occurs naturally in the Sun.
It released a large amount of energy.
It involves the joining of two atomic nuclei.
Hence, options B, C and D are correct.
What is nuclear fusion?Nuclear fusion involves the fusion of 2 smaller nuclei into bigger nuclei.
Nuclear fission and nuclear fusion are nuclear reactions that produce energy in the form of heat. Fission is the process of the division of heavy, unstable nuclei into two nuclei, and in fusion two nuclei combine, resulting in the release of energy.
It occurs naturally in the Sun -The proton-proton fusion is the source of energy from the Sun. The energy from the sun occurs inside the core of the Sun.
It released a large amount of energy - Fission and fusion are two physical processes and produce large amounts of energy from atoms.
It involves the joining of two atomic nuclei - Nuclear fusion happens in the Sun and other stars when two atomic nuclei make one larger one.
Hence, options B, C and D are correct.
Learn more about nuclear fusion here:
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Anyone know this question
What is the role of a consumer in the flow of energy through a food chain?
Answer:
The role of consumers in an ecosystem is to obtain energy by feeding on other organisms and sometimes transfer energy to other consumers. Changes that affect consumers can impact other organisms within the ecosystem.
Explanation:
Hope this helped Mark BRAINLIEST!!!!
Consumers are organisms that obtain energy by eating other organisms. Consumers may consume either producers or other consumers. Consumers include animals.
What is food chain ?A food chain is a network of links in a food web that begins with producer organisms and ends with an apex predator, detritivore, or decomposer species.
A food chain also demonstrates how organisms are related to one another through the food they consume. Each trophic level is represented by a different level of a food chain.
Producers can produce their own food and energy, but consumers are not the same. Consumers are living things that must hunt, gather, and eat their food.
Thus, Consumers must eat in order to gain energy, or they will perish. Omnivores, carnivores, herbivores, and decomposers are the four types of consumers.
To learn more about the food chain, follow the link;
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List 3 characteristics of mechanical waves.
Answer:
transverse, longitudinal, and surface waves.
Explanation:
there you go
Which characteristic is not common to outer planets? Question 3 options: They support rung systems They have no solid surface They have multiple moons They are small
Answer:
They have no solid surface.
Explanation:
Many outer planets are actually known as gas giants and don't contain much of a solid surface. hope this helped!
A wood-burning stove is used to heat the air in a small room.
What types of heat transfer are involved?
First the burning wood inside the wood stove gives off radiation heat and transfers it into the air inside the wood stove. This hot air then heats up the metal that the wood stove is made of; the metal is heated through conduction heat transfer.
The heat of the burning wood spread in the small room via radiation and convection.
What is convection?Convection can be described as the transfer of heat from one place to another due to the movement of fluid. Convective heat transfer involves the combined processes of conduction and advection.
Gases and liquids are not good conductors of heat under normal temperature and pressure conditions, but they can easily transfer heat.
The convection takes place other through diffusion or advection but does not take place in solids, because there is no movement of its constituent particles happens. The diffusion of heat that occurs in solids is known as thermal conduction.
Heat transfer that takes place between a surface and a liquid that is in contact with the surface is known as convection heat transfer. Therefore, the heat of the wood-burning stove spread in the entire room through radiation and convection.
Learn more about convection, here:
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9. Polar molecules tend to have_______ intermolecular forces when
compared to nonpolar molecules.
1. weaker
2. explosive
3. stronger
4.identical
Answer:
3, non polar causes the molecule to not have a twin molecule. polar just means it has a correspondent
A box is pushed at a constant speed of 1.5 m/s for 12 seconds using a force of 50 Newtons across the floor. Calculate the distance the box travelled using. *
Answer:
Distance = 18 meters
Explanation:
Given the following data;
Force = 50 N
Speed = 1.5 m/s
Time = 12 seconds
To find the distance travelled;
Speed can be defined as distance covered per unit time. Speed is a scalar quantity and as such it has magnitude but no direction.
Mathematically, speed is given by the equation;
[tex]Speed = \frac{distance}{time}[/tex]
Making distance the subject of formula, we have;
Distance = speed * time
Substituting into the formula, we have;
Distance = 1.5 * 12
Distance = 18 meters
Additionally, to find the workdone;
Workdone = force * distance
Workdone = 50 * 18
Workdone = 900 Joules
help please, How much water would you need to add to the 10 grams of sodium hydroxide to make 100 grams of the 10% solution?
Answer:
90
Explanation:
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PLEASE HELP I AM BEGGING YOU!!!!!!!!
what is the k expression for this reaction? plz help !
Answer:
K = [HI]² / [H₂] [I₂]
Explanation:
To write the expression of equilibrium constant, K, it is important that we know how to obtain the equilibrium constant.
The equilibrium constant, K for a given reaction is simply defined as the ratio of the concentration of the products raised to their coefficient to the concentration of the reactants raised to their coefficient. Thus, the equilibrium constant is written as follow:
K = [Product] / [Reactant]
Now, we shall determine the equilibrium constant for the reaction given in the question above. This can be obtained as illustrated below:
H₂(g) + I₂(g) —> 2HI (g)
K = [HI]² / [H₂] [I₂]
Given the following electronic configurations, identify how many valence electrons each atom has.
A=
Element
Electron Configuration
Number
of
Valence
Electrons
B =
C=
Sodium
(Na)
152 2s 2p 3s
А
DONE
Oxygen (0)
1s 2s 2p
B
Iron (Fe)
1s 2s 2p 3s 3p 452
306
С
Answer:
sodium=atomic number 11 it electronic configuration is ,K=2, L=8,M=1 Valence is 1
oxygen= atomic number 8 it electronic configuration is K=2, L=6 Valence is 2
iron= atomic number 26 it electronic configuration is K= 2 L= 8,M=8 N=6 Valence 2
Answer: A=1
B=6
C=8
Explanation:
why is it not advisable to wear black clothes in the afternoon
PLEASE HELP ASAP!!
WHAT IS THE CYCLE OF OZONE IN THE STRATOSPHERE?
A. UV splits an oxygen molecule into two oxygen atoms, which combine with a oxygen molecule to create ozone.
B. An ozone molecule splits into an oxygen molecule and an oxygen atom.
C. An ozone molecule forms from and then splits into two oxygen molecules and two oxygen atoms.
D. A & B
If a gas is 0.8L at 900 mm Hg and 400K, what is the new pressure if the volume decreases to 0.5L and 300K?
Answer:
The new pressure of the gas is 1080 mmHg
Explanation:
The general equation provides a way to calculate the relationship between changesnp in volume, temperature and pressure of a given mass of gas.
The general gas equation is given as P1V1/T1 = P2V2/T2
Where P1 is initial pressure of gas
V1 is initial volume of gas
T1 is initial temperature of gas
P2 is final pressure of gas
V2 is final volume of gas
T2 is final temperature of gas
From the given question, P1 = 900 mmHg, V1 = 0.8 L, T1 = 400 K, P2 = ?, V2 = 0.5 L, T2 = 300 K
Making P2 subject of the general gas equations:
P2 = P1V1T2/V2T1
P2 = (900 × 0.8 × 300) / (0.5 × 400)
P2 = 1080 mmHg
Therefore, the new pressure of the gas is 1080 mmHg.
3. How many molecules are in 2.10 moles of H2O?
Answer:
1.264 × 10²⁴ moleculesExplanation:
The number of molecules can be found by using the formula
N = n × L
where n is the number of moles
N is the number of entities
L is the Avogadro's constant which is
6.02 × 10²³ entities
From the question we have
N = 2.10 × 6.02 × 10²³
We have the final answer as
1.264 × 10²⁴ moleculesHope this helps you
what if the solubility of KNO3 at 60 celsius?
A. 28 grams of KNO3
B. 38 grams of KNO3
C. 45 grams of KNO3
D. 108 grams of KNO3
Answer:
D. 108 grams of KNO3(Potassium nitrate)
Which of the following is not a covalent compound?
NH3
PbSO4
C6H12O6
OCl2
Answer:
PbSO4 is not a covalent compound.
Explanation:
PbSO4 is an ionic compound.
What did ancient people think of lunar eclipses
Explanation:
What happened to the ruler when you suddenly released it
Which property would most likely be the same when comparing two random samples of copper?
A mass
O B. volume
OC weight
OD. density
Answer:
melting point and conductivity
Explanation:
as long as both samples are copper, it will melt at the same time, aswell as conduct electricity the same.
What is displacement?
Answer: the moving of something from its place or position:
Explanation: hopes this helpe D:
Answer:
its a reaction where an atom or a set of atoms gets displaced get taken over by another atom
Explanation:
2. Which of the following hydrocarbons would you expect to have the
highest boiling point?
methane
ethane
pentane
octane
Answer:
C
6
H
14
Explanation:
What are the two groups the animal kingdom is divided into?
Answer:
Taking the animal kingdom as an example, we can see that it is split into two clear groups: Invertebrates - animals without a backbone. Vertebrates - animals with a backbone.
Explanation:
What pairs will form IONIC bonds?
Choices are :
A.) Na and F
B.) Mg and Ge
C.) C and O
D.) N and N
correct name for Ti(SO4)2?
Answer:
Titanium(IV) Sulfide
Explanation:
metals react with ? what
Answer:
metals can react with acid, water and oxygen
Question 28 (4 points)
Complete the following table:
Substance
pH
POH
[H] M
A
3.45
B
0.26
For the concentration fill in the blank, I used a decimal with a leading zero and two sig figs.
Answer:
Pls type your question in another manner cos I really cant decipher what you wrote the way you typed this pls
Determine how much energy is needed to change 50 g of liquid water at 100°C to steam.
13,000J
113,000J
-113,000J
-130J
Answer:
[tex]Q=113,000J[/tex]
Explanation:
Hello there!
In this case, since the vaporization process is carried out in order to turn a liquid into a gas due to the addition of heat, we can use the following heat equation involving the heat of vaporization of water or any other substance:
[tex]Q=m*\Delta _{vap}H[/tex]
Thus, since this heat of vaporization for water is 2259.36 J/g, we plug in this amount to obtain the total energy for this process.
[tex]Q=50*2259.36 J/g\\\\Q=113,000J[/tex]
Which is positive due to the necessity of heat.
Regards!