Answer:
The weather caused by a warm from and a cold front compare by:
D. A warm front brings rain in humid air on occasion, but a cold front brings thunderstorms in summer.
A warm front is a phenomenon in which a warm air mass replaces a cold air mass, creating fog and rain on one occasion. While the cold front is the replacement of a warm air mass by a cold air mass changing the pressure and creating a thunderstorm in the middle of summer. The warm front happens in zones close to the equator and the cold fronts happen in almost every place.
Hope that helps. x
as the distance from the nucleus increases, what happens?
The nuclear effective charge decreases as the energy of repulsion between the atoms increases between one another. The farther away an atom is from the nucleus, the more loosely that is attracted to that nucleus.
What role do plants play in reducing carbon dioxide in the atmosphere? How can plants play a role in combating climate change?
Please help!!? ASAP
Answer:
an indirect cooling effect.
Explanation:
they play that role by reducing water vapor in the heat .
How many moles are there in 10 dm3 of sulfur dioxide gas
Taking into account the room temperature and pressure, there are 0.4167 moles in 10 dm³ of sulfur dioxide gas.
RTP refers to Room Temperature and Pressure. Pressure is 1 atm and Temperature is 298K. In this case, one mole of any gas has a volume of 24 dm³ or 24,000 cm³. This volume is called the molar volume of a gas.
In other words, the molar volume (the amount of space occupied by one mole) of any gas is 24dm³ (1 mol of gas molecules occupies 24.0 dm³).
Therefore, the amount of volume occupied by any gas can be calculated by multiplying the number of moles of gas by 24dm³:
Volume = Moles of gas× 24 dm³
So, the number of moles can be calculated as:
Moles of gas= Volume÷ 24 dm³
In this case, you know that volume if sulfur dioxide gas is 10 dm³. So, replacing:
Moles of gas= 10 dm³ ÷ 24 dm³
Solving:
Moles of gas= 0.4167
Finally, there are 0.4167 moles in 10 dm³ of sulfur dioxide gas.
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https://brainly.com/question/23119191?referrer=searchResultsHow many grams of barium chloride are produced when 1.25 x 1023 molecules of HCl reacts with barium?
Considering the reaction stoichiometry and Avogadro's Number, the mass of barium chloride produced is 21.6 grams.
Balanced reaction
The balanced reaction is
2 HCl + Ba → BaCl₂ + H₂
Moles of HCl that reactAvogadro's Number is called the number of particles that make up a substance (usually atoms or molecules) and that can be found in the amount of one mole of said substance. Its value is 6.023×10²³ particles per mole. Avogadro's number applies to any substance.
Then you can apply the following rule of three: if 6.023×10²³ molecules are contained in 1 mole of HCl, then 1.25×10²³ molecules are contained in how many moles of HCl?
amount of moles of HCl= (1.25×10²³ molecules × 1 mole)÷ 6.023×10²³ atoms
amount of moles of HCl= 0.2075 moles
Then, 0.2075 moles of HCl react.
Reaction stoichiometryBy reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of moles of each compound participate in the reaction:
HCl: 2 moles Ba: 1 mole BaCl₂: 1 mole H₂: 1 moleMass of barium chloride producedThen you can apply the following rule of three: if by stoichiometry 2 moles of HCl produce 1 mole of BaCl₂, 0.2075 moles of HCl will produce how many moles of BaCl₂?
[tex]amount of moles of BaCl_{2} =\frac{0.2075 moles of HCl x 1 mole of BaCl_{2} }{ 2moles of HCl}[/tex]
amount of moles of BaCl₂= 0.10375 moles
Being the molar mass of BaCl₂ 208.24 g/mole, then the mass of barium chloride produced is calculated as:
[tex]0.10375 molesx\frac{208.24 grams}{1 mole} =21.6 grams[/tex]
Finally, the mass of barium chloride produced is 21.6 grams.
Learn more about:
Avogadro's Numberbrainly.com/question/11907018?referrer=searchResults brainly.com/question/1445383?referrer=searchResults brainly.com/question/1528951?referrer=searchResultsReaction stoichiometry brainly.com/question/16487206?referrer=searchResults brainly.com/question/14446695?referrer=searchResults brainly.com/question/11564309?referrer=searchResults brainly.com/question/4025026?referrer=searchResults brainly.com/question/18650135?referrer=searchResultsfactors that affect the rate of a chemical reaction include which of the following? i. frequency of collisions of reactant particles ii. kinetic energy of collisions of reactant particles iii. orientation of reactant particles during collisions
To solve such this we must know the concept of double displacement reaction. Therefore, the correct option is option B that is kinetic energy of collisions of reactant particles.
What is chemical reaction?Chemical reaction is a process in which two or more than two molecules collide in right orientation and energy to form a new chemical compound. The mass of the overall reaction should be conserved. There are so many types of chemical reaction reaction like combination reaction, double displacement reaction.
There are so many factors that affects the rate of reaction, among these, kinetic energy of collisions of reactant particles affect the rate of a chemical reaction. the rate of reaction is directly proportional to the rate of chemical reaction.
Therefore, the correct option is option B.
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Why are ionic compounds not considered to be molecules?
Answer:
No, ionic compounds are crystals of infinite cations and anions bound together. There is no “molecule” of ionic compounds such as, for example, NaCl, because there are no single units of the compound.
Explanation:
Ionic compounds are not considered to be molecules because they do not consist of discrete, covalently bonded units like molecules.
In ionic compounds, the bonding occurs through the transfer of electrons from one atom to another, resulting in the formation of ions. These ions are held together by strong electrostatic attractions, known as ionic bonds.
Unlike molecules, which are formed by the sharing of electrons in covalent bonds, ionic compounds do not have individual units with fixed numbers of atoms. Instead, they exist as a three-dimensional lattice structure composed of alternating positive and negative ions. The ions are arranged in a repeating pattern throughout the crystal lattice.
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What is a net ionic equation?
How many molecules of NO2 are in 0.36 moles?
Answer:
1 mol contains 6.022*10^23 molecules 0.36 moles contain 0.36 * 6.022*10^23 = 2.2 *10^23 molecules
Explanation:
how do particles in the most rigid state of matter move
Explanation: In solids, particles are very closely packed in an orderly arrangement in a lattice and only vibrate in fixed positions. The forces of attraction between them are very strong. This allows them to overcome the forces of attraction that hold the other phases closer together
State two properties of a base
Answer:
Bases are bitter to taste a bitter taste is characteristic of all bases. Bases may or may not be soluble in water Bases that can dissolve in water are called alkalis.Explanation:
a terminal alkyne was treated with nanh2 followed by propyl iodide. the resulting internal alkyne was treated with ozone followed by water, giving only one type of carboxylic acid. provide a systematic, iupac name for the internal alkyne.
The systematic Iupac name for the internal alkyne is : 4-octyne
When only one type of carboxylic acid is made the internal alkyne will be symmetric and the compounds can be 3-hexane or 4-octyne but given that one of the reactants is propyl iodide. Therefore
The Internal alkyne will have an Iupac name 4-octyne
Hence we can conclude that the systematic Iupac name for the internal alkyne is 4-octyne
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noble gases are used in many situations where a safe and constant environment must be maintained. for example, helium is used to provide a protective atmosphere for making fiber optics and semiconductors. argon is used to fill incandescent and flourescent light bulbs to prevent oxygen from corroding the hot filament. why are noble gases used in these situations?
Answer:
Because they do not naturally react with other elements
Explanation:
Since noble gases do have a fulfilled valence shell, they do not react with other elements because they're already stable by the themselves.
9.
a
What is the energy of a wave having a frequency of 5.71 x 1013 Hz?
Answer:
[tex] \huge{3.783 \times {10}^{ - 19} \: J}[/tex]
Explanation:
The energy of the wave can be found by using the formula
E = hfwhere
E is the energy
f is the frequency
h is the Planck's constant which is
6.626 × 10-³⁴ Js
From the question we have
E = 6.626 × 10-³⁴ × 5.71 × 10¹³
We have the final answer as
[tex]3.783 \times {10}^{ - 19} \: J[/tex]
Hope this helps you
explain why nitrogen diffuses faster than clorine
Some tomato ketchup accidentally got onto a piece of white fabric. Your mother suggested that lemon juice, baking soda, or vinegar would be good for removing the tomato stain. Plan and design an experiment that can be used to investigate which of the three substances is most effective in removing the tomato stain.
1. Write a hypothesis for your investigation
2. Identify the dependent, independent, and controlled variables.
3. Outline a proposed method for the experiment you would conduct.
4. What data would be collected? Suggest a suitable way(s) for recording your data.
5. Identify ONE (1) possible source of error and ONE (1) precaution.
Please if you see this help me answer these questions.
Answer:
3... uhm I'm not sure it could 2
25.0g of iron is heated to 100.0 and then placed in 50.0 g of water in a insulated calorimeter. the initial temperature of the water is 38.00. the specific heat of water is 4.181j/g and the specific heat if iron is 0.45j/g. what is the final temp of the water and the iron?
Answer:
Approximately [tex]41.2\; {\rm ^{\circ} C}[/tex].
Explanation:
Let [tex]t\; {\rm ^{\circ} C}[/tex] be the final temperature of the water and the iron.
Temperature of the water would be increase by [tex](t - 38.00)\; {\rm ^{\circ} C}[/tex].
Temperature of the iron would be reduced by [tex](100.0 - t)\; {\rm ^{\circ} C}[/tex].
Let [tex]c[/tex] denote the specific heat of each material. Let [tex]m[/tex] denote the mass of the material. For a temperature change of [tex]\Delta t[/tex], the energy change involved would be:
[tex]Q = c\, m \, \Delta t[/tex].
The energy that the water need to absorb would be:
[tex]\begin{aligned}& Q(\text{water, absorbed}) \\ =\; & c(\text{water}) \, m(\text{water})\, \Delta t (\text{water}) \\ =\; & 4.181\; {\rm J \cdot g^{-1} \cdot K^{-1}} \times 50\; {\rm g} \times (t - 38.00)\; {\rm ^{\circ} C} \\ =\; & (209.05\, t - 7943.9)\; {\rm J} \end{aligned}[/tex].
The energy that the iron would need to release would be:
[tex]\begin{aligned}& Q(\text{iron, released}) \\ =\; & c(\text{iron}) \, m(\text{iron})\, \Delta t (\text{iron}) \\ =\; & 0.45\; {\rm J \cdot g^{-1} \cdot K^{-1}} \times 25.0\; {\rm g} \times (100.0 - t)\; {\rm ^{\circ} C} \\ =\; & (1125 - 11.25 \, t)\; {\rm J} \end{aligned}[/tex].
Since this calorimeter is insulated, the energy that the iron had released would be equal to the energy that the water had absorbed:
[tex]Q(\text{water, absorbed}) = Q(\text{iron, released})[/tex].
[tex]209.05\, t - 7943.9 = 1125 - 11.25\, t[/tex].
[tex]t \approx 41.2[/tex].
Thus, the final temperature of the water and the iron would be approximately [tex]41.2\; {\rm ^{\circ} C}[/tex].
Which of these codes is best for creating websites?
The most used codes for the creation of websites are CSS and HTML.
What is a code?A code can be defined as the basic unit that composes a website. This implies that by using a code you can create a website from scratch and by the end of the process you should have a functional and complete website.
What codes are used?In website creation, the most common codes are CSS and HTML.
HTML: This is the most common code used and also one of the easiest to understand and use.
CSS: This code is not as popular as HTML but it is still a very popular code used by many people creating websites.
Note: This question is incomplete because the options are not given; due to this, I answered it based on general knowledge.
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Anyone down to start a convo
how can knowledge of percent composition help you as a consumer ? how can you promote responsible consumerism ?
Answer:
it is a nice question....my mind tells me that the first is it use me as a good vibes and can use to anything the second i will do my best too absorbe it.
Explanation:
Hope this help...
Fill in the blanks:
87 pg = [? ]x10^[?]g
87 picograms are equivalent to [tex]8.7\times 10^{-11}[/tex] grams.
This is a unit problem, in which a derived unit must translated into a fundamental unit. A picogram is a equivalent to a trillionth of a gram, which is the fundamental SI mass unit. Mathematically speaking, we have the following equivalence:
[tex]1\,pg = 1\times 10^{-12}\,g[/tex]
Now we proceed to find the equivalent value for this case:
[tex]87\,pg[/tex]
[tex]87\times 10^{-12}\,g[/tex]
[tex]8.7\times 10^{-11}\,g[/tex]
87 picograms are equivalent to [tex]8.7\times 10^{-11}[/tex] grams.
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Help me in the 10 the number. Clue- helium and hydrogen make up the first of these
Answer:
helium and hydrogen make up the first of these
the answer is period
If I remove the table from under the book, what will happen to the book? Think about Newton’s second law of motion. Is there an acceleration? What caused the acceleration?
Newton’s second law of motion is a dot product of mass and acceleration, if you remove the table from, under the book, gravity will act on the book and pull it downwards to the centre of the earth
Newton's Second law of motion states that "the acceleration of an object depends upon two variables – the net force acting on the object and the mass of the object."
In our case the mass of the book and the force of gravity
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If the energy of the H–H bond is 452 kJ/mol. The energy of the O=O bond is 598 kJ/mol. The energy of the O–H bond is 367 kJ/mol, which bond would be the strongest? Which bond would be the weakest?
Taking into account the bond energy, the O=O bond is the strongest and the O–H bond is the weakest.
The bond energy is the average total energy that would be released by the formation of a mole of chemical bonds, from their constituent fragments (all in the gaseous state).
In other words, the normal or standard bond enthalpy is defined as the change in enthalpy or heat released, under standard conditions of 1 atmosphere and 25ºC, that accompanies the reaction of formation of one mole of bonds from the isolated atoms in gaseous state.
The higher the bond energy, the stronger and more stable the bond will be.
So, taking into account all the previous, the O=O bond is the strongest and the O–H bond is the weakest.
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https://brainly.com/question/14769257?referrer=searchResultshttps://brainly.com/question/18724136?referrer=searchResultshttps://brainly.com/question/14175443?referrer=searchResultshttps://brainly.com/question/13765299?referrer=searchResultsThe bowl of fruit has a mass of 2.2 kg.
What net force must act on the bowl of fruit to make it accelerate to the right
at a rate of 4.4 m/s2? (Hint: Use F = ma.)
A. F = 9.68 N right
B. F = 9.68 N left
C. F = 6.60 N left
D. F= 6.60 N right
Taking into account the Newton's second law, the correct answer is option A. F = 9.68 N right
In first place, acceleration in a body occurs when a force acts on a body.
Newton's second law states that a force will change the speed of an object because the speed and/or direction will change. These changes in velocity are called acceleration.
So, Newton's second law defines the relationship between force and acceleration mathematically. This law says that the acceleration of an object is directly proportional to the sum of all the forces acting on it and inversely proportional to the mass of the object
Mathematically, Newton's second law is expressed as:
F= m×a
where:
F = Force [N] m = Mass [kg] a = Acceleration [m/s²]In this case, you know:
F= ? m= 2.2 kg a= 4.4 m/s²Replacing in Newton's second law:
F= 2.2 kg× 4.4 m/s²
Solving:
F= 9.68 N
Finally, As the bowl of fruit accelerates to the right, the correct answer is option A. F = 9.68 N right
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This boy said he was finna destroy me and winked what does that mean
Answer:
pipe
Explanation:
You receiving
what soda was the first to use the two-liter bottle?
Answer:
Coca-Cola or Pepsi
Explanation:
Im sure one of those
Will give 10 points.
Why does an atom have a neutral charge?
A It has equal numbers of electrons and protons.
B. The number of neutrons equals the number of protons and
electrons in the atom.
C. It has equal numbers of electrons and neutrons.
D. It has equal numbers of neutrons and protons.
Answer:
option A it has equal numbers of electrons and protons
Explanation:
electrons are negatively charged and protons are positively charged, so if the numbers of each are equal, then the atom will be neutral.
Answer:
A. it has equal numbers of electrons and protons
Explanation:
The overall charge of every atoms is neutral because the number of electrons and protons is the same. Protons are positively charged while electrons are negatively charged and so they cancel out.
Can someone help?
Name the compound:
CH=benzene
Why?
benzene is represented by the empirical formula CH, which indicates that a typical sample of the compound contains one atom of carbon (C) to one atom of hydrogen (H).
----(Is this what you meant???)
Each cart below is pushed across a room with the same amount of force. Which cart will result in the greatest change in speed?
F.A 75 kg cart being pushed with a 200 N force
G.A 125 kg box being pushed with a 200 N force
H.A 350 kg box being pushed with a 200 N force
J.A 450 kg cart being pushed with a 200 N force
The cart with the greatest change in speed is the cart with a mass of 75 Kg
Acceleration is defined as the change in velocity of an object with time. Also, acceleration is related to the force and mass according to the following equation:
Acceleration (a) = Force (F) / mass (m)
a = F / mTo answer the question, we shall determine the acceleration of each cart.
For cart of mass 75 kgMass (m) = 75 KgForce (F) = 200 NAcceleration (a) =?a = F / m
a = 200 / 75
a = 2.67 m/s²For cart of mass 125 kgMass (m) = 125 KgForce (F) = 200 NAcceleration (a) =?a = F / m
a = 200 / 125
a = 1.6 m/s²For cart of mass 350 kgMass (m) = 350 KgForce (F) = 200 NAcceleration (a) =?a = F / m
a = 200 / 350
a = 0.57 m/s²For cart of mass 450 kgMass (m) = 450 KgForce (F) = 200 NAcceleration (a) =?a = F / m
a = 200 / 450
a = 0.44 m/s²From the above illustrations, we can see that the cart with a mass of 75 K has the greatest change in speed (i.e 2.67 m/s²)
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Answer:
D
Explanation:
F. 200-75=125
G. 20-125=75
H. 350-200=150
J. 450-200=250
250 is the biggest number so it has the biggest change
cellus
A student measures the acidity of a solution and
concludes that it has a pH of 2.70. However, the
seller claims that its pH is 3.20. What is the
percent error in the student's measurement?
Answer:
15.63%
Explanation:
The formula of error percentage is:
([experimental value-real value]/real value)100%
You divide the subtraction of the absolute value of experimental value (the one you got during a experiment) and the one that's "proven" to be right by again, the proven value. You got a decimal and all you have to do is multiply it by 100%
Answer:
on acellus the answer is 16%
I hate acellus
Explanation: