ionic compounds have __ boiling points and molecular compounds have __ boiling points
a: high,low
b: low,low
c: low,high
d: high,high
Answers
Answer:
A
Explanation:
because ionic bond have stronger electrostatic force of attraction between oppositely charged particles so it has higher boiling point than molecular which is covalent bond and have low boiling point hope this helps to understand ^_^
Related Questions
Which of the following accurately describes a Brønsted-Lowry acid?
A)
A Brønsted-Lowry acid receives a protein and has a matching conjugate acid.
B)
A Brønsted-Lowry acid donates a proton and has a matching conjugate base.
C)
A Brønsted-Lowry acid receives a proton and has a matching conjugate base.
D)
A Brønsted-Lowry acid donates a protein and has a matching conjugate acid.
Answers
Answer:
B. A Brønsted-Lowry acid donates a proton and has a matching conjugate base.
Explanation:
Here's HA is bronsted acid and its conjugate base pair is A-.
Answer:
Explanation:
The actual answer is B. The equation has an acid on one side and a base on the other. The acid donates a proton. Donates means gives up the equivalent of a proton.
What are changed after fushing the cover of the jar?
Answers
Answer:
the volume decreases and the pressure increases.
Answer:
When you first set the water balloon on top of the jar, the air pressure outside the jar and the air pressure inside the jar are the same. ... So now there is less air, less stuff, in the jar
Differentiate between compounds and mixtures using the particle model of
matter.
Answers
Answer:
compounds are substance which can be formed by chemically combining two or more elements.
mixtures are substance that are formed by physically mixing two or more substances
periods occurred during the Mesozoic Era?
Answers
Triassic
Jurassic
Certacous
The Mesozoic is divided into three time periods: the Triassic (245-208 Million Years Ago), the Jurassic (208-146 Million Years Ago), and the Cretaceous (146-65 Million Years Ago).
Explain:
(a) Ethanol should be rectified after distillation.
Answers
Answer:
Ethanol (boiling point 78°C) and methanol (boiling point 65°C) are two miscible liquids. There is only a small difference in their boiling points. These two liquids are separated from their mixture by fractional ths distillation.
When vapours of the mixture pass through the fractionating column, repeated liquefaction and vapourisation take place. Subsequently, the vapours of low boiling methanol enter the condenser from the fractionating column, condense to liquid and get collected in the round bottomed flask first. Similarly, ethanol with higher boiling point can be collected later in another round bottomed flask.
4) How many moles of O2 are produced with 42.0 moles of H2O?
Answers
Answer:
1.2353 mol
Explanation:
help? why is chem SO HARD
Answers
Answer:
D. The potential energy of the products is greater than the potential energy of the reactants.
UwU
Question 7 of 25
The diagram shows the direction trade winds blow below and above the
equator. What causes the trade winds to move at an angle rather than straight
toward the equator?
for Easterlies
Answers
Answer:
A. The Coriolis Effect bends them
Explanation:
The Coriolis Effect is a force that causes objects and other things that are not attached to the ground and which are moving over a large distance around the Earth such as the trade winds or air planes, to take an apparent curved path in their motion rather than moving in a straight line, due mainly to the rotation of the Earth
The Coriolis Effect is named after French mathematical physicist Gaspard-Gustave de Coriolis
Count the number atoms in the following compound
3 Al(OH)3
AL=
O
H=
1
2
Answers
Answer:
Explanation:
Let us look closely at the compound, Count the number atoms in the following compound Al(OH)3;
We shall considered the number of each atom present in this compound.
There is one atom of aluminum present
There are three atoms of oxygen present
There are three atoms of hydrogen present
Hence, there are a total of seven atoms of different elements in the compound.
2.98 moles of H2 at 35°C and 2.3 atm are in a 32.8 L container. How many moles of H2 are in a 45.3 L container under the same conditions?
Answers
Answer:
4.12 moles
Explanation:
We can solve this problem with the Ideal Gases Law.
P . V = n . R . T
In our first case we have:
P = 2.3 atm
V = 32.8 L
n = 2.98 moles
T → 35°C + 273 = 308K
Let's replace data for the second case:
2.3 atm . 45.3L = n . 0.082 . 308K
n = (2.3 atm . 45.3L) / (0.082 L.atm/mol.K . 308K)
n = 4.12 moles
Answer:
4.11 moles of H₂ are in a 45.3 L container under the same conditions.
Explanation:
Avogadro's law establishes the relationship between the amount of gas and its volume when the temperature and pressure are held constant.
This law says that the volume of a gas under conditions of constant temperature and pressure is directly proportional to the number of moles of gas. That is, if the amount of gas is increased, the volume will increase; whereas if the amount of gas is decreased, the volume decreases.
Avogadro's law is expressed mathematically as the quotient between the volume and the amount of gas equal to a constant:
[tex]\frac{V}{n} =k[/tex]
Being 1 the initial conditions and 2 the final conditions, the following is satisfied:
[tex]\frac{V1}{n1} =\frac{V2}{n2}[/tex]
In this case:
V1= 32.8 Ln1= 2.98 molesV2= 45.3 Ln2= ?Replacing:
[tex]\frac{32.8 L}{2.98 moles} =\frac{45.3 L}{n2}[/tex]
Solving:
[tex]n2*\frac{32.8 L}{2.98 moles} =45.3 L[/tex]
[tex]n2=45.3 L*\frac{2.98 moles}{32.8 L}[/tex]
n2= 4.11 moles
4.11 moles of H₂ are in a 45.3 L container under the same conditions.
5. Which particle can not be accelerated by the electric
or magnetic fields in a particle accelerator?
A) neutron
B) proton
C) alpha particle
D) beta particle
Answers
Answer:
A. neutron
Explanation:
Neutrons cannot be accelerated in an electric or magnetic field because they are neutral in charge.
What is ppm?
A. Concentration of a solute in grams/106 grams solution
B. Concentration of a solute in mol/L solution
C. Concentration of a solute in mol/kg solvent
D. Concentration of a solute in mol/mol solution
SUBMIT
HURRY!!!!
Answers
Answer:
This is an abbreviation for "parts per million" and it also can be expressed as milligrams per liter (mg/L). This measurement is the mass of a chemical or contaminate per unit volume of water. Seeing ppm or mg/L on a lab report means the same thing.
When the sunlight stikes a leaf on a tree, what form of energy is it transformed to?
Answers
Answer:
ATP
Explanation:
Answer:
chemical energy
Explanation:
The picture below shows what a driver sees in his side view mirror.
Indicate whether each statement is TRUE.
Select all that apply
REALLY URGENT
the mirror causes the van behind to appear further away than it really is.
The mirror allows the driver to see a wide area behind him.
The mirror causes the van behind to appear nearer than it really is.
The mirror causes the van behind to appear smaller than is really is
The mirror causes the van behind to appear larger than it really is.
35
Answers
Answer:
True- Mirror causes van to appear closer
Explanation:
Objects in the rear view mirror appear closer than they really are.
Vision and area are limited by the mirrors.
saturated solution can be changed into unsaturated solution by treating. why??
Answers
Answer:
A saturated solution is that which is dissolved as much solute as it is capable of dissolving. By heating the solution a saturated solution can be changed into an unsaturated solution. Without adding any solvent it can be changed into an unsaturated solution. :]
What change would increase the amount of solid solute able to be dissolved in liquid water?
Answers
The increase in kinetic energy that comes with higher temperatures allows the solvent molecules to more effectively break apart the solute molecules that are held together by intermolecular attractions.
The increased vibration (kinetic energy) of the solute molecules causes them to dissolve more readily because they are less able to hold together.
The rise in kinetic energy with temperatures allows the solvent molecules to break apart the solute molecules that are held by intermolecular attractions.
What factors affect the solubility of solids in a liquid substance?There are two direct elements that influence solubility are
Temperature and Pressure.Temperature stimulates the solubility of both solids and gases, but the pressure is only concerned with the solubility of gases.
Thus, solids are dissolved in liquid water, the solubility increases with temperature.
To learn more about solubility click here:
https://brainly.com/question/5173732
Can someone please solve this?
Answers
Answer:
Indirect (B)
Explanation:
When one facter increases the other decreases.
Answer:
INDIRECT- when one factor increases, the other decreases
Which would have a stronger attraction to the nucleus, the outer electrons of a carbon atom, or the outer electrons of an oxygen atom? Why?
Answers
Answer: Outer electrons because they revolve around the nucleus and can be multiple more than one
Explanation:
Hope it helps you you
Which of the following statements explains how temperature affects the rate of a reaction ? (5 points ) When temperature decreases , collision of particles increases . When temperature decreases , kinetic energy increases . When temperature increases , particles move slower . When temperature increases , particles move faster
Answers
Answer:
As the kinetic energy of the gaseous solute increases, its molecules have a greater tendency to escape the attraction of the solvent molecules and return to the gas phase. Therefore, the solubility of a gas decreases as the temperature increases.
Explanation:
As the kinetic energy of the gaseous solute increases, its molecules have a greater tendency to escape the attraction of the solvent molecules and return to the gas phase. Therefore, the solubility of a gas decreases as the temperature increases.
The statement which explains the affects to temperature to the rate is that when temperature increases, particles move faster.
What is the rate of reaction?Rate of any reaction gives idea about the speed of the completion of any chemical reaction.
If temperature of the chemical reaction increases, then the movement of the particle increases.Fast movement increases the collision.And more collision in turn increases the rate of the reaction.Hence, when temperature increases, particles move faster.
To know more about rate of reaction, visit the below link:
https://brainly.com/question/19513092
#SPJ2
HELP ME WITH THIS CHEMISTRY ILL MARK U THE BRAINLYEST
Answers
Answer:
pv=nrt solution re solve it
what is an equationwhat is a what is a catalyst
Answers
[HELP PLEASE !!} Which has a pH below 7?
a
acid
b
base
Answers
Answer: A- Acid.
Explanation: Because pH's greater than 7 are alkaline which is basic.
what is the ideal gas constant?
A.it is a constant that applies only at STP
B.it is a specific constant for a specific gas
C.it is constant that depends on the conditions
D.it is a universal constant for all glasses
Answers
Multicellular organisms are organized into tissues, organs, and organ systems.TRUE OR FALSE
Answers
Answer:
True i think..............
Explanation : Humans—and other complex multicellular organisms—have systems of organs that work together, carrying out processes that keep us alive. The body has levels of organization that build on each other. Cells make up tissues, tissues make up organs, and organs make up organ systems.
Substance D - It has a high melting and boiling point. The arrangement of its particles are closely packed. It cannot conduct electricity unless molten or dissolved in water. What type of element is substance D?
Answers
Answer:
ionic
Explanation:
because when in molten or dissolved in water ions are free to move and carry a charge however when in solid the ions are fixed in position so can't carry a charge.
what happens when two of the atoms get close together in javalab ionic bond simulation? (I've been messing with this thing for a hour and I still dont get what's happening)
Answers
What is the source of all food energy on Earth?
A : decomposers
B : herbivores
C : producers
D : carnivores
Answers
WHAT IS OZONE.....................
How does it acts as safeguard?
Answers
Explanation:
The ozone layer is a natural layer of gas in the upper atmosphere that protects humans and other living things from harmful ultraviolet (UV) radiation from the sun. ... The ozone layer filters out most of the sun's harmful UV radiation and is therefore crucial to life on Earth.
What property is not included in Dalton’s atomic model ?
Answers
if 1 mole of Zn reacts xompletely with 1 mole of I2, how many moles of ZnI2 will result?
Answers
Answer:
Zn + I₂ ⇒ ZnI₂Explanation:
The result of this reaction is only one mole of ZnI₂.Mole measure the number of elementary entities of a given substance that are present in a given sample. 1 mole of ZnI[tex]_2[/tex] will result by the reaction of 1 mole of Zn with 1 mole of I[tex]_2[/tex].
What is mole?The SI unit of amount of substance in chemistry is mole. The mole is used to measure the quantity or amount of substance. We know one mole of any element contains 6.022×10²³ atoms which is also called Avogadro number. The stoichiometry represents the number of moles.
The balanced equation is
[tex]Zn+ I_2\rightarrow ZnI2[/tex]
To see the mole of zinc iodide we need to have the knowledge of stoichiometry chemistry. So, the mole ratio among Zn, I[tex]_2[/tex] and [tex]ZnI_2[/tex] are 1:1:1 that means to produce 1 mole of ZnI[tex]_2[/tex], one of each Zn and I[tex]_2[/tex] are required.
Therefore 1 mole of ZnI[tex]_2[/tex] will result by the reaction of 1 mole of Zn with 1 mole of I[tex]_2[/tex].
To know more about mole, here:
https://brainly.com/question/15209553
#SPJ2