Answer:
So if you want to raise the temperature of that one gram from 19 to 35 degrees, that same gram will need 35 −19 = 16 times as much heat. And if you want to raise the temperature of 193 grams in stead of just 1 gram, you will need 193 times as much heat.
Explanation:
what is the periodic trend for electronegativity
Answer:
mark me brainlest
Explanation:
Electronegativity values generally increase from left to right across the periodic table. Electronegativities generally decrease from top to bottom of a group. The highest electronegativity value is for fluorine.
Answer:
"Electronegativity increases as you move from left to right across a period because the number of charges on the nucleus increases." (sstudy30 on Quizlet)
Explanation:
It explains itself haha!
Have a nice day!
I hope this is what you are looking for, but if not - comment! I will edit and update my answer accordingly. (ノ^∇^)
- Heather
In which process do particles move closer together but remain in motion?
А condensation
B
diffusion
с
evaporation
D
freezing
Answer: c
Explanation: the particles stay together but has some gain more heat they break apart.
Which of the following are required for plants to carry out photosynthesis?
Answer:
To perform photosynthesis, plants need three things: carbon dioxide, water, and sunlight
What will the particles in the tube do when the current is turned on?
Which best describes the role of a negative feedback loop?
0 The output is reduced so the body can maintain homeostasis.
0 The output builds so the body can maintain homeostasis.
0 Hormone levels in the blood increase to increase effects.
0 Hormone levels in the blood decrease to increase effects.
Pls Hurry!!!! ANYONE PLS HELP ME!! I AM DOING THE UNIT TEST AND I NEED THIS FAST!!! APAP PPL!! PLS!! WILL MARK BRAINLIEST!!!
Answer:
A
Explanation:
now I'm not sure, but considering negative feedback allows the systems to self stabilize that would be the best option.
PLEASE NOTE THAT THIS IS A EDUCATED GUESS.
A student dissolved some crystals of a salt in water.
The student added sodium hydroxide solution to the salt solution
The student added sodium hydroxide until it was in excess
Describe what the student would see if the salt contained calcium ions
Under Normal Conditions no reaction will be seen between Calcium ions (Ca⁺), NaCl (salt solution) and NaOH(sodium hydroxide).
What is a double replacement reaction ?In a double replacement reaction , the compounds present switch cation and anion to form new compounds.
But here in NaOH(sodium hydroxide) and NaCl (salt solution) the cation sodium ion Na⁺, of both the compounds is same so the end result will be same .
There will be no net reaction .
But if excess Sodium Hydroxide is added to the solution , we will see precipitate of NaCl , salt forming.
If Salt contained Ca⁺ ions , firstly NaCl will only combine with Ca⁺ ions in special conditions as Na⁺ ions are more reactive than Ca⁺ ions.
On addition of NaOH we would observe no change in normal conditions due to above stated reason .
In special conditions following reaction takes place ,in normal condition the reaction follows reverse direction.
Ca + 2 NaOH ← Ca(OH)₂ + 2 Na
Hence under Normal Conditions no reaction will be seen between Calcium ions , NaCl (salt solution) and NaOH(sodium hydroxide).
To know more about Double Displacement reaction
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If the forces are balanced...
The net force is greater than zero
The net force is zero
The net force is less than zero
Answer:
the net force us 0.............
Explanation:
please mark brain
If each mole contains 6.023 x 10^23 atoms of magnesium. How many magnesium atoms reacted in your reaction? 400 mg of Magnesium were used.
Answer:
0.1× Avogadro's numbers
10×10^22
Explanation:
convert given mass to moles
then multiply by Avogadro's number
LOTS OF POINTS Which statement about Fe is supported by the modern atomic theory but no John Dalton’s theory? Look at the pic provided for choices.
Answer:
https://brainly.com/question/19533453
Explanation:
This might be able to help you.
Why is the Milky Way considered a galaxy
Answer:
Explanation:
All the stars we see in the night sky are in our own Milky Way Galaxy. Our galaxy is called the Milky Way because it appears as a milky band of light in the sky when you see it in a really dark area.
Answer: it is
Explanation: A galaxy is a system of millions or billions of stars, together with gas and dust, held together by gravitational attraction, plus there are 100 billion planet in it.
How does a phase change from solid to liquid occur in a substance?
A. Heat energy is released from the substance, weakening the electrical attraction between molecules.
B. Heat energy is released from the substance, strengthening the electrical attraction between molecules.
C. Heat energy is added to the substance, weakening the electrical attraction between molecules.
D. Heat energy is added to the substance, strengthening the electrical attraction between molecules.
Answer:
see below
Explanation:
1. Heat energy is added to the substance, weakening the electrical attraction between molecules.
2. Both the melting point and boiling point are lower.
3. dipole
4. Water and ethanol have different molecular structures.
5. The lone pairs of electrons in the oxygen atom causes the molecule to be bent; the oxygen atom has a partial negative charge, while the hydrogen atoms have partial positive charges.
[quizlet: captncrun]
Heat is a form factor that changes the solid from light to light to gaseous mediums. The phases take place in a cyclic manner.
The solid to liquid changes take place due to the melting or fusion, solid to gas take lace through the sublimation, liquid to gas is by vaporization, and gas to liquid is condensation. Thus the heat is added and leads to the weakening of the electrical attraction within the molecules.Hence the correct option is C.
Learn more about the phase change from solid to liquid occur in a substance
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How does acid base extraction work.
Answer:
it can be done using the method of lithium paper
_ is the process in which an element spontaneously transforms into another isotope of the same element, or into a different element.
Answer:
Nuclear transmutation
Explanation:
The process in which an element spontaneously transforms into another isotope of the same element, or into a different element is called nuclear transumutation. It occurs when the number of protons or neutrons in the nucleus of an atom is changed.
Apply: Many gyms and health clubs have steam saunas, which are small steam-filled rooms. Traditionally, steam saunas have a container of heated rocks. A small ladle of water is poured on the rocks in order to make the steam.
1. Use what you have learned so far about heat transfer to explain how hot rocks can be used to make steam?
2. Why do you think only a small ladle-full of water is poured on the rocks at one time?
Answer:
the heat vaporization of water is very high with small amounts of water you can vaporize the water as it hits the rocks into steam. (i think)
Explanation:
what class of small objects have orbits completely between the gas giants, occasionally crossing their paths?
The class of small objects with orbits completely between the gas giants is centaurs.
Centaurs are a class of small tiny bodies that circles the Sun amid Jupiter as well as the Neptune, crossing the orbits of one or more of the giant planets. It has a semi-major axis, also known as perihelion, between that the outer planets.
Centaurs' orbits are often unstable since they have crossed the orbits of more than one of the gas giant planets. They are known to have the properties of asteroids and comets.
Learn more about celestial bodies here:
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Is the following sentence true or false?
The properties of a metal are related to bonds within the metal,
Answer:
True.
Explanation:
In metallic bonds, nuclei of metal atoms line up uniformly and the electrons are delocalized (spread out evenly). Since this allows electrons to move around freely, and electricity is created by the flow of electrons, metals can conduct electricity.
Describe the procedural steps to achieve adequate separation of a homogeneous, liquid mixture containing benzoic acid, n-propylbenzene, and phenol, provided a 4:1 hexane to ethyl acetate solution as the eluent, using Thin Layer Chromatography (TLC).
n-propylbenzene will travel the largest distance because it interacts most effectively with the stationary phase followed by phenol and benzoic acid will travel the least distance because it interacts poorly with the mobile phase.
Thin layer chromatography involves the separation of a mixture using a stationary phase made of silica gel on a glass plate and an appropriate mobile phase. The extent of separation is highly dependent on the magnitude of interaction between the solute and the mobile phase. and stationary phase.
The first step in thin layer chromatography is to make a thin mark at the bottom portion of the plate then spot the plate with the sample. The mobile phase is now introduced into the TLC chamber a little below the mark. The plate is now placed in the stationary phase such that the mark is above the solvent level.
The TLC chamber is now covered and enough time is allowed for separation to occur. The spots can be seen using a suitable indicator dye or with a the aid of UV light
After the separation of a homogeneous, liquid mixture containing benzoic acid, n-propylbenzene, and phenol, provided a 4:1 hexane to ethyl acetate solution as the eluent, we can see that n-propylbenzene will travel the largest distance because it interacts most effectively with the stationary phase followed by phenol and benzoic acid will travel the least distance because it interacts poorly with the mobile phase.
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Cr(NO3)3(aq) +CuCl2(aq)
[tex]2\text{Cr(NO}_3\text{)}_3} + 3\text{CuCl}_2 \longrightarrow 2\text{CrCl}_3 + 3\text{Cu(NO}_3\text{)}_2[/tex]
Elements with ________________ first ionization energies and ___________ electron affinities generally form cations.
Answer:
elements with low first ionization energies and positive or slightly negative electron affinities generally form cations.
hope it is helpful:)
What is the differences between solids liquids and gases on a molecular level apes.
I need help with one paragraph. (About the image)
Answer:
hi im just trying to get points lol hope u got ur answer
Explanation:
what are remained on the cloth? explain your answer.
Answer:
on which cloth. since the sub is chemistry. which chemical or mixture or compound
An atom has 5 protons, 4 electrons, and 5 neutrons. Which
of the following reasons represents why this is an atom of
the element boron?
A ) The atom has 5 neutrons, just like every atom of boron
B ) The atom has 4 electrons, just like every atom of boron
C ) The atom has 14 total particles, in a combination of 5-5-4 just like every atom of boron
D ) The atom has 5 protons, just like every atom of boron
< PLEASE HELP ASAP!
Answer:
i think the answer is C
Explanation:
not sure plsss dont bash im a beginner
Answer:
B ) The atom has 4 electrons, just like every atom of boron
Explanation:
HOPE IT'S HELPexplain why the pressure in a sealed container of gas decreases when heat is added to the system?
Answer:
the question is bogus
see explanation
Explanation:
explain why the pressure in a sealed container of gas decreases when heat is added to the system?
when you add heat to the gas molecules in a sealed container, the molecules move faster and the pressure INCREASES!!!
IT DOES NOT DECREASE
PV =nrT
IF THE O THEVOLUME IS FIXED (REIN A SEALED CONTAINER) AND THE NUMBER OF MOLES n is FIXED, THEN THE PRESSURE IS DIRECTLY PROPORTIONAL THE TEMPERATURE
THE GREATER T, THE GREATER P
QUESTION 2
What is the pressure in atm of 0.742 mole of gas at 10.91 L and 291 K?
I
The pressure of this gas in atm is equal to 1.63 atm.
Given the following data:
Number of moles = 0.742 moleVolume = 10.91 LitersTemperature = 291 KIdeal gas constant, R = 0.0821 Latm/molKTo calculate the pressure of this gas, we would use the ideal gas law equation;
[tex]P=\frac{nRT}{V}[/tex]
Where;
P is the pressure.V is the volume.n is the number of moles of a gas.R is the ideal gas constant.T is the temperature.Substituting the given parameters into the formula, we have;
[tex]P=\frac{0.742 \times 0.0821 \times 291}{10.91} \\\\P = \frac{17.73}{10.91}[/tex]
Pressure, P = 1.63 atm.
Read more: https://brainly.com/question/25706436
Which of the following is NOT a chemical reaction?
Select one:
a.
Hydrogen and oxygen combine to make water
b.
Ammonia breaks up into nitrogen and hydrogen
c.
Ice melts to form water
What is an electrolysis
Answer:
Definition of Electrolysis :- Electrolysis, process by which electric current is passed through a substance to effect a chemical change. The process is carried out in an electrolytic cell, an apparatus consisting of positive and negative electrodes held apart and dipped into a solution containing positively and negatively charged ions.Explanation:
Hope this helps you dear ✌️Carry on learning !!what is the coefficient for 4K2CO3
changing the position of the .. increases or decreases your effort ..
why are baseballs harder to pick up tennis balls?
Explanation:
Because baseballs are made out of things that make it heavier then tennis balls, easier to play the sport. that's why they use a bat in baseball.