Answer:
1. Higher than
2. Soultion and the liquid state
3. hard
4. Have varying solubilities
Explanation:
Ionic bond is a type of intermolecular force formed between a metal and non metal by losing electrons from the metal. The correct phrase which complete the statement is "higher than" a molecular compound.
What is melting point?Melting point is the temperature at which a substance converts to liquid state from solid state where both the phases are in equilibrium. Melting point of a compound depends on the bond type, purity, mass etc.
Ionic compounds are formed between a metal and non metal of higher electronegativity. Metals are electron rich and thus are able to donate electrons to an electronegative atom.
Non- metals such as O,N, halogens forms ionic bond with metals, Ionic bond are strongest of all bond types. Therefore, its very hard to break. As well the ionic network is hard to disorder because they have perfect crystal lattice structure.
To melt a compound the intermolecular attraction have to be reduced in order to liquify the compound. Ionic bond is strong and more thermal energy have to be applied to weaken the bond.
Hence, melting point of ionic compounds is likely to be higher than molecular compounds.
To find more about melting point, refer the link below:
https://brainly.com/question/25777663
#SPJ5
2.
Which of the following is good evidence that an unknown sample is a pure
substance.
A
After leaving a liquid to settle, it separates.
B
After leaving a liquid to settle, it does not separate.
С
After evaporating a liquid, there is nothing left behind.
D
After evaporating a liquid, a white powder is left behind.
Accelerate Learning Inc. - All Rights Reserved
Answer:
С. After evaporating a liquid, there is nothing left behind
Explanation:
In chemistry, a pure substance is that substance that has a definite chemical composition. It cannot be separated using physical means as the chemical bonds that forms it have to be broken. Pure substances include elements and compounds.
According to this question, a good evidence that an unknown sample is a pure substance would be that: After evaporating a liquid, there is nothing left behind. This means that after using physical separation technique, THE PURE SUBSTANCE COULD NOT BE SEPARATED, hence, nothing is left behind.
All rocks began as what type of rock?
planetary
igneous
metamorphic
sedimentary
Answer:
Igneous
Explanation:
What type of atom has 1 proton, 1 electron, and 1 neutron?
Answer:
Hydrogen atoms
What type of change is rotting of fruits?
Answer:
Chemical
Explanation:
The rotting of fruit is a chemical reaction. This is because when fruit spoils, an enzymatic reaction occurs. Because an enzymatic reaction causes molecules to change when rotting, rotting is a chemical reaction.
well,It is a chemical change because once an apple rots, it cannot go back to its original form as a new, clean, and fresh apple. and that is a chemical change. making it be different on a chemical level.
Answer:
chemical change
Explanation:
the reason for a fruit to rot is the enzyme reactions in it we can take that as a solid reason and on the other hand if it is a physical change we can reverse the change that means we should be able to take a rotten fruit and make it to its original position so that we can have it. but we can never do that so we can prove that rotting of fruits is a chemical change.
hope this helps
Molecular mass of CH3 OH =
Answer:
32g/mol
Explanation:
When dealing with a compound, the molar mass is the gram - formula mass or gram moleclular weight. This is determined by the addition of its component atomic masses.
For CH₃OH;
Atomic mass of C = 12g/mol , H = 1g/mol, O = 16g/mol
So,
Molecular mass = 12 + 3(1) + 16 + 1 = 32g/mol
What is a closed water cycle?
Answer:
The global hydrological cycle is powered by solar energy. It is a closed system, in continual circulation. This means that there is a definite amount of water in the system and that this amount does not change. 99 per cent of the water is stored within the cycle, leaving only 1 per cent in circulation.
Explanation:
Which process takes place in both plant and animal cells
A.Photosynthesis
B.Cellular respiration
C.Formation of glucose
Answer:
cellular respiration
Answer:
the answer is A. cellular respiration
does anyone know how to do this ??
Answer:
Look at your periodic table
Explanation:
It tells you everything like Potasium 1 and 1 ox and 1 hydrogen
NEED HELP NOW
Which item does not contain a noble gas?
neon sign
mp3 player
flash camera
helium balloon
Answer:
may be mp3 player......
Answer:
mp3 player
Explanation:
Neon sign contains Neon
Flash camera contains Xenon
Helium balloon contains Helium
WILL GIVE LOTS OF POOIINNTTSSS PLEEAASSEE IMMM CRYINNNNNN PLEASE STOP JUST SITTIN THERE AND LOOKIN AT ITTT ANSWEERRR ASAPPPP
Explain specific heat in your OWN words. (2pts) Explain the equation. (1pt) Give an example of your understanding of the concept that we encounter on a daily basis. (3 pts.)
All the heat needed to raise the temp of something at a given degree.
Q=mc△T
Q= heat energy
m= mass
c= specific heat capacity
△T= change in temperature
Is "Hypooxide" even a thing???
Answer:
yes it is
Explanation:
How is this person able to stay on the skateboard? explain
Gravity, friction, and balance keeps people able to not fall off a skateboard.
When heat is lost, molecules
GUYS I REALLY NEED THIS ASAP!!!!!
Answer:
I don't think so
Explanation:
The equation doesn't look balanced
Chemistry, biology and geography are the branch of natural science.
Select one:
True
False
Answer:
the answer is (a)true.
Answer (s) true.
Explanation: Natural science can be divided into two main branches: life science and physical science. Life science is alternatively known as biology, and physical science is subdivided into branches: physics, chemistry, astronomy and Earth science.
What does it mean if a cell has a positive voltage?
O A The reaction will occur if energy is added.
O B. The reaction will occur naturally
C. The reaction is not spontaneous.
D. The reaction will not occur naturally.
Answer:
B
Explanation:
The reaction will occur naturally
Answer:
B. A pE x
Explanation:
Trust
NO ONE ANSWERS MY QUESTIONS
answered
Continue off my answer
Choose one of the compounds from the table and explain how you know the numbers of atoms in your formula. Carbon Monoxide (co) is a mix of carbon and oxygen and when they mix they make carbon monoxide.
Answer:
where is the answer options because it sounds like I need some
Answer:
Sodium Hydride=NaH which has 1 sodium atom, and 1 hydrogen atom, i know this because there are no added numbers meaning theres one of each element.
Explanation:
What two things do you need to determine speed
the distance traveled and the time it took to travel that distance
Write out in paragraph form your explanation to a first-grade student who is having trouble understanding the idea of freedom.
The question needs specifics so that students know what should be included in their response.
Answer:
Freedom is when everyone tells you to wear your mask, but if you dont feel like it, you choose to not wear your mask. Even though you have the choice between getting the infection or not, you can still choose to get the virus.
Explanation:
evaluate these two sound waves and determine what property they have In common
Answer:
The same wavelength
Explanation:
The two sound waves shown in the diagram has the same wavelength as clearly shown.
Wavelength of a wave is the distance between a complete wave cycle. It is the difference between successive train of troughs and crests. In the figure shown the amplitude, vertical displacement of the wave differs. But the wavelength of the waves are the same.The number of protons in an atom is equal to its (2 points)
оа
atomic number
atomic mass
ос
atomic model
o d
atomic medium
equal to its atomic number
Answer:
The number of protons id equal to the atomic number on the periodic table.
Explanation:
Australia's winter solstice starts in June 21st. What season will begin in
North America at that same time?
Answer:
summer will start in North America June 21st
can anyone help me with my homework lol im really behind and need answers! i need help/answers with these subjects - math 2 - chemistry - spanish 2 - world history - complit 2 (english). It's fine if you can Answer only 1 subject!! i just need to catch up
Answer:
where is the question please send question I will give don't worry
4. Refine Your Plan Suppose you are mixing ingredients for bread, and
the recipe says to bake the dough as soon as it's mixed. But, you have
another task to do and are unable to bake the dough right away. Wha
should you do to make sure your bread still turns out well?
PlEASE ITS TIMED HELP
Answer:
the bread rising shows that it’s baking which is a chemical reaction
Explanation:
which represents the copernican model that is the most similar to that of Aristarchus?
Answer: A
Explanation: A is the answer
How many quantum numbers are same for 11th and 12th electrons of Magnesium?
Answer: hope this helps if so mark me brainlest
Explanation:
The four quantum numbers determine the state of the electron, and are
n
is the distance of the orbital from the nucleus (
1
,
2
,
3
,
4
etc),
l
is the shape of the orbital (
0
→
n
−
1
)
m
l
is the orientation of the orbital in space (
−
l
→
+
l
), and
m
s
is the spin of the electrons inside the orbital (
−
1
2
or
+
1
2
).
The electronic configuration for magnesium is
1
s
2
2
s
2
2
p
6
3
s
2
. The outermost electron is one in the
3
s
orbital, which means that
n
=
3
.
It also means that
l
=
0
, since
s
is basically shorthand for the orbital shape of
l
=
0
.
m
l
can range from
−
l
to
+
l
, but since
l
=
0
, then
m
l
must also be
0
.
Finally,
m
s
can be either one since there are two electrons in the
3
s
orbital and it doesn't really matter which spin you choose.
Putting all of these together, the final quantum numbers of a magnesium atom are
3
,
0
,
0
,
±
1
2
what would she see if there had been salts dissolved in the colourless , clear liquid?
Answer:
physical change
Explanation:
it has to be 20 charchters long
The morning temperature in a city is 41°F. If a sunny, mild day is forecast, which temperature is most likely for 2:00 p.m.?
Answer:
huh
Explanation:
lavoviser is commonly know as the( brainly dont eveer help)
Answer:Lavoisier is known as the “Father of Modern Chemistry” or the “Father of Chemistry”.
Explanation:
A container with an initial volume of 1.0L is occupied by a gas at a pressure of 150kPa at 25'C. By changing the volume, the pressure of the gas increases to 600kPa as the temperature is raised to 100'C. What is the new volume? Use Combined Gas Law
Answer:
Final Volume = 0.31L
Explanation:
Initial volume V1 = 1L
Initial pressure P1 = 150kPa
Initial temperature, T1 = 25'C + 273 = 298K
Final Pressure P2 = 600kPa
Final Temperature T2 = 100'C + 273 = 373K
Final Volume V2 = ?
The combined gas law is given as;
P1V1 / T1 = V2P2 / T2
150 * 1 / 298 = V2 * 600 / 373
V2 = 55950 / 178800 = 0.31L
