Answer: 1.215 × 10^4 i think
Explanation:
Explain what lattice energy is and how it affects the properties of ionic compounds. Describe the general properties of ionic compounds.
Answer:
The force of attraction between oppositely charged particles is directly proportional to the product of the charges on the two objects (q1 and q2) and inversely proportional to the square of the distance between the objects (r2).
The strength of the bond between the ions of opposite charge in an ionic compound therefore depends on the charges on the ions and the distance between the centers of the ions when they pack to form a crystal.
An estimate of the strength of the bonds in an ionic compound can be obtained by measuring the lattice energy of the compound, which is the energy given off when oppositely charged ions in the gas phase come together to form a solid.
Explanation:
The lattice energies of ionic compounds are relatively large. The lattice energy of NaCl, for example, is 787.3 kJ/mol, which is only slightly less than the energy given off when natural gas burns.
The bond between ions of opposite charge is strongest when the ions are small.
The ionic bond should also become stronger as the charge on the ions becomes larger.
Answer:
The force of attraction between oppositely charged particles is directly proportional to the product of the charges on the two objects (q1 and q2) and inversely proportional to the square of the distance between the objects (r2). The strength of the bond between the ions of the opposite charge in an ionic compound therefore depends on the charges on the ions and the distance between the centers of the ions when they pack to form a crystal. An estimate of the strength of the bonds in an ionic compound can be obtained by measuring the lattice energy of the compound, which is the energy given off when oppositely charged ions in the gas phase come together to form a solid.
Explanation:
Got it right on edge 2020
what is the definition of chemical formula?
Answer:
A chemical formula is a way of presenting information about the chemical proportions of atoms that constitute a particular chemical compound or molecule, using chemical element symbols, numbers, and sometimes also other symbols, such as parentheses, dashes, brackets, commas and plus and minus signs. These are limited to a single typographic line of symbols, which may include subscripts and superscripts. A chemical formula is not a chemical name, and it contains no words. Although a chemical formula may imply certain simple chemical structures, it is not the same as a full chemical structural formula. Chemical formulae can fully specify the structure of only the simplest of molecules and chemical substances, and are generally more limited in power than are chemical names and structural formulae.
Explanation:
Have A Wonderful Day !!
How many protons, electrons and neutrons do A nitrogen atom with atomic number 7 and mass number 14
Answer:
p =7
e = 7
n = 7
Explanation:
proton = atom number
electron = atom number - muatan
neutron = mass nimber - atomic number
Element X has two naturally occurring isotopes. The isotope with mass 62.93 amu has a
relative abundance of 69.2%. The isotope with mass 64.93 amu has a relative
abundance of 30.8%. Calculate the average atomic mass of Element X. What is the
identity of Element X?
what do waves carry from place to place
Answer:
Waves carry energy from place to place.
Explanation:
Some waves are used for mainly communication and phone signals. They help people get internet in the middle of nowhere if you are near an energy wave.
A student drops a 95g object into a graduated cylindor that has 30ml of water in it. After the object is added to the cylinder the water level reads 63ml. What is the density of the object?
Answer:
The answer is 2.88 g/mLExplanation:
The density of a substance can be found by using the formula
[tex]density = \frac{mass}{volume} \\ [/tex]
From the question
mass = 95g
volume = final volume of water - initial volume of water
volume = 63 - 30 = 33 mL
We have
[tex]density = \frac{95}{33} \\ = 2.87878787...[/tex]
We have the final answer as
2.88 g/mLHope this helps you
Which statement about aldehydes and ketones is correct?
A) In aldehydes, the carbon is always joined to at least one hydrogen atom.
B)Every ketone molecular formula is unique.
C) Aldehydes are similar to ketones, but their carbonyl group is located in the middle of the carbon chain.
D) In ketones, the carbon of their carbonyl group is bonded with one other carbon.
Answer:
A) In aldehydes, the carbon is always joined to at least one hydrogen atom.
Explanation:
Aldehydes and Ketones are organic compounds.
The main difference between them is that aldehydes have the carbon atom attached to at least one hydrogen atom.
In ketones, the carbon is attached to another carbon.
The IUPAC names of alkanals usually end with -eFor alkanones usually end with -oneTo reiterate, the striking difference between the two families is that in alkanals, a hydrogen atom is directly attached to the carbonyl group while in alkanones, no hydrogen atoms is attached to the carbonyl group but two bulky alkyl groups.
Iron is a
homogenous mixture
O heterogeneous mixture
O element
compound
Answer:
element
Explanation:
Which among the following is/are correct about solution (true solution)?
I. Concentration of solute will always be the same throughout a mixture
in a solution.
II. Solutions do not show scattering of light.
(a) only I (b) only II
(c) both I and II (d) none
Answer
A
Explanation
letter a kase tama
How many moles are in 12.6 grams of K2S?
If an object increases in speed, it must be as a result of
o increasing friction.
o unbalanced forces.
O gravitational attraction.
O air resistance.
please hurry i’m taking a test
Answer:
a; increasing fraction
Explanation:
The valence electrons are those found in the highest energy ____ and ___ orbitals
^Please help ASAP I’ll mark you as brainlister FILL in the blank
The outmost free electron which is present in the outer shell is called valency. The number of elements joining together to form the compound also depends on the valency.
Each electron has revolved around the nucleus and that path is considered as orbit. The orbit is as follows:-
SPDFThe free electrons are usually lie in the outmost shell.
Hence according to the question, the correct option is S and P orbit.
For more information, refer to the link:-
https://brainly.com/question/12271256
Is the study of the living plants and animals in the ocean
Answer:
marine biologist
Explanation:
marine biologist
Answer:
marine biologist a scientist who studies creatures that live in ocean water, from bacteria and shellfish to kelp and whales. mean One of several measures of the “average size” of a data set. .organism Any living thing, from elephants and plants to bacteria and other types of single-celled life.
Consider the following unbalanced equation.
Ca(OH)2 + (NH2)2SO4 → CaSO4 + NH3 + H2O
Help for 70 points please explain why too.
Answer:
1 Ca(OH)2 + 1 (NH4)2SO4 ---> 1 CaSO4 + 2 NH3 + 2 H2O
Explanation:
The photo I attached should make more sense as an explanation.
When balancing equations, the first and most important step is to count the # of each type of element on each side.
In this problem there are 5: Ca, O, H, N, and S.
Once you do that you can begin balancing.
Here is the initial tally for the elements in this problem:
On the left.....
Ca - 1
N - 2
S - 1
O - 6
H - 10
On the right.....
Ca - 1
N - 1
S - 1
O - 5
H - 5
Looking at these values, we can see N, O, and H all need adjusting the right side. You should never start balancing with O or H unless they are the only elements that need adjusting. They usually balance out with the rest of your work or with water in the end.
So given all of that, you should start balancing with N on the right. Giving NH3 a coefficient of 2 will change the number of Nitrogen atoms on the right to 2. Be careful though! It will also change the number of Hydrogen atoms from 5 to 8 (because (2*3) =6 and 6+2 =8).
Let's tally our numbers again.
On the left..... (these should be unchanged)
Ca - 1
N - 2
S - 1
O - 6
H - 10
On the right.....
Ca - 1
N - 2
S - 1
O - 5
H - 8
Okay, now we see only O and H need adjusting on the right. Luckily there is H2O so we can do that without impacting the number of other atoms.
Give H2O a coefficient of 2 and count the number of atoms on the right again.
On the right.....
Ca - 1
N - 2
S - 1
O - 6 (because 4 from CaSO4 plus 2 from 2H2O = 6)
H - 10 (6 from NH3 plus 4 from 2H2O = 10)
Do these numbers match what you have on the the left side of the equation? Yes! It is balanced so you do not need to adjust anymore. Your coefficients in the answer will be 1-1-1-2-2.
Which of these elements is most likely to be a colorless gas based on the type of element? Al, Pd, Ar, Cs
When calculating percent error, the accepted value is in the denominator
True or false
Answer:
True
Explanation:
How many grams are in 2.75 moles of Calcium
Answer:
110.21 g/mol
............................
Answer:
110.22 g in 2.75 moles of calcium
Explanation:
to convert moles to grams
moles (g/mol)
2.75 mol Ca (40.08 (atomic weight) g Ca/1 mol Ca)= 110.22
Please help!!!
A piece of metal of mass 27 g at 93° C is placed
in a calorimeter containing 59.2 g of water at
21°C. The final temperature of the mixture is 34.9 ° C. What is the specific heat capacity of the metal? Assume that there is no energy lost to the surroundings.
Answer in units of J/g. ° C
Answer:
1.586 J/g°C
Explanation:
So, we have the formula [tex]q = mc\Delta t[/tex].
Since heat released by the metal is = to the heat absorbed by the water (because they eventually become the same temperature in solution), we can say
[tex]m_{water}C_{water}(T_{water}-T_f) = - m_{metal}C_{metal}(T_{metal} - T_f)[/tex]
Plugging in, we get:
[tex]59.2*4.184*(21- 34.9) = - 27*C_{metal}*(93 - 34.9)[/tex]
Solving, we get [tex]C_{metal} = 1.586[/tex] J/g°C.
If N gains two electrons, which of the following elements would it be isoelectronic with
A) C
B) S
C) B
D) F
Answer: it’s D
yup!:)
If nitrogen gains two electrons, it becomes isoelectronic with fluorine.
There are five electrons on the outermost shell of nitrogen and a total of seven electrons in the atom. Recall that isoelectronic species are species that have the same number of electrons.
Fluorine is an element in group seventeen. There are nine electrons in fluorine. If nitrogen gains two electrons, it becomes isoelectronic with fluorine.
Learn more: https://brainly.com/question/12108425
Can someone help me with number two pls
Answer:
The answer is G
Explanation:
this is because of what a element looks like on a periodic table
Answer:
F. 1 and 3
Elements are pure substance
What is the correct order of increasing elec-
tronegativity?
1. Si, P, S, C, N, O, F
2. O, C, N, S, P, Si, F
3. F, Si, P, S, N, C, O
4. F, O, N, C, S, P, Si
Answer:
ceo que3
Explanation:
A student submits the following work on the mass number, but he has made a few mistakes. Select the sentences that are incorrect.
Calculating the mass number for an atom requires that we know the atomic number and the number of protons in the atom’s nucleus. The mass number then gives us the average weight of atoms of a given element. Specifically, these units are calibrated by setting the mass number for carbon-12 as 12 atomic mass units. Neutrons and protons have the same masses. However, as long as the number of protons equals the number of neutrons, the values balance out and we always obtain a whole number for the mass number.
Answer
Calculating the mass number for an atom requires that we know the atomic number and the number of protons in the atom’s nucleus. The mass number then gives us the average weight of atoms of a given element. However, as long as the number of protons equals the number of neutrons, the values balance out and we always obtain a whole number for the mass number.
Explanation:
those 3
A penny is 2.5 g. How many kilograms does a penny weigh?
Answer:
The penny now weighs 0.0025kg
Hope this helps please give me brainliest!
God bless!
Rain exist in which phase
Answer:
WATER!!!!!
Explanation:
hope it helps
1. 4.5 cm = __________ Km
2. 34⁰C = __________ Kelvin
3. 195kg = __________ lb
7. 108⁰F =__________ ⁰C
8. 63.2 m =__________ mm
if you can solve this for me I'd gladly appreciate it
Answer:
1. 0.000045km
2. 307.15 Kelvin
3. 429.9014lb
7. 42.22222 celcius
8. 63200 mm
5. Aidan is on a carnping trip with his family. As the temperature decreases
Aidan suggests building a campfire. Which of the following explains why
heat moves from the campfire to the people sitting around it? *
Answer:
Because heat flows from warmer objects to cooler objects
Explanation:
Which of the following is false regarding supersonic speed?
Question 10 options:
When an object reaches supersonic speed a sonic boom will occur.
When an object reaches supersonic speed it is moving faster than the speed of light.
When an object has reaches supersonic speed it breaks the sound barrier.
When an object supersonic speed it is moving faster than 343 meters/second.
Answer:
the answer is C
Explanation:
i know this one, and may YOU PLEASE MARK BRAINLIEST I ONLY NEED ONE MORE CROWN TO MOVE TO THE NEXT RANK
What is the density of nitrogen gas if 0.256g occupies a volume of 100mL?
Answer:
The answer is 0.00256 g/mLExplanation:
The density of a substance can be found by using the formula
[tex]density = \frac{mass}{volume} \\ [/tex]
From the question we have
[tex]density = \frac{0.256}{100} \\ [/tex]
We have the final answer as
0.00256 g/mLHope this helps you
which element has the electron configuration of 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 7s2 5f14 6d8
Answer:
Darmstadtium
Explanation:
An element with the electronic configuration 1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p⁶5s²4d¹⁰5p⁶6s²4f¹⁴5d¹⁰6p⁶7s²5f¹⁴6d⁸ has 110 electrons in its electron shells.
Since the element is a neutral atom, this number is also equal to its atomic number. Therefore, its atomic number is 110.
The element in the period table that has an atomic number of 110 is Darmstadtium, a d-block element, thus a transittion metal. It also belong to period 7 in the Periodic table of elements.
The element that has the electron configuration is Darmstadtium.
Electronic configuration:Since An element with the electronic configuration 1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p⁶5s²4d¹⁰5p⁶6s²4f¹⁴5d¹⁰6p⁶7s²5f¹⁴6d⁸ contains 110 electrons in its electron shells.
Also, the element should be a neutral atom, this number should also equal to its atomic number. Therefore, its atomic number is 110.
The element in the periodic table that has an atomic number of 110 is Darmstadtium, a d-block element, thus a transition metal.
Learn more about electron here: https://brainly.com/question/24850343
True/False: When a substance is heated, the change in energy causes the bonds between particles to become stronger.
Answer:
false
Explanation:
the energy causes the bonds to become looser