The elements that will form covalent bonds are Silicon (Si) and nitrogen (N), option C.
What are covalent bonds?A covalent bond is formed between two atoms by the mutual sharing of one or more pairs of electrons. The two atomic nuclei attract these electrons at the same time. When the difference in electro-negativities of two atoms is too small for electron transfer to form ions, a covalent bond forms.
Hydrogen (H₂) is a molecule with a single covalent bond as well as Halogens like Fluorine (F), Chlorine (Cl), Silicon (Si) and nitrogen (N).
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PLEASE HELP!! 10 POINTS!
what could the fourth quantum number of a 2s^2 electron be?
Answer:
D. ms=+1/2.
Explanation:
Hello there!
In this case, since the quantum numbers are known as:
* Principal quantum number (n) which cannot be zero. The allowed values of n are therefore 1, 2, 3, 4, and so on.
* Angular quantum number (l) is able to be any integer between 0 and n-1. If n = 2, for example, l can be either 0 or 1.
* Magnetic quantum number (m) is able to be any integer between -l and +l. If l = 3, m can be either -3, -2, -1, 0, +1, +2 or +3.
* Spin Quantum Number (ms): ms = +½ or -½. Accounts for the orientation of the spin axis of an electron as it is able to spin in only one of two directions.
Thus, since the fourth quantum number is ms, spin, we infer that the answer is D. ms=+1/2 because it represents the positive spin on 2s^2.
Best regards!
Answer: ms = +1/2
Explanation: a pex
pls help will give brainless
Select the correct answer.
How does the equilibrium change with the removal of hydrogen (H2) gas from this equation?
2H2S ⇌ 2H2(g) + S2(g)
A.
Equilibrium shifts right to produce more product.
B.
Equilibrium shifts left to produce more reactant.
C.
Equilibrium shifts right to produce less product.
D.
Equilibrium shifts left to produce less reactant.
Answer:
the guy above is wrong
Explanation:
i just did the test and got it wrong
Pablo wants to enter the science fair. Which question could be answered through scientific investigation?
Answer:
Hello
Explanation:
utd847dcpyc08td0
List the methods of separation used in water purification...... ( HELP PLEASE )
Answer:
I can list four. These are the main ones.
Bolling
Filtration
Distillation.
Chlorination
Explanation:
an amount of 54.11 grams of pentane, c5h12 ,is equal to
The diagram below shows a group of water molecules.
The water molecules in the diagram are attracted to each other by
Answer:
hydrogen bonds, the positive and negative charges of the hydrogen and oxygen atoms that make up water molecules makes them attracted to one another.
HELP PLEASE!!!!! 10 POINTS
What does the third quantum number (ml) describe?
Answer:
A. The specific orbital within a sublevel
Explanation:
the third quantum number is also called the magnetic quantum number ([tex]m_{l}[/tex]) and it represents the number of orbitals within a subshell.
At archery practice, Vladimir tests a bow and arrow he has recently designed. He is able to accelerate a 24.0-g arrow at an average rate of 70.0 m/s^2. What is the bows average force on the arrow
Answer: A
1.68 N
Explanation:
F = ma = 0.024(70.0) = 1.68 N
Would this be a strong or weak acid
Answer:
It Should be Strong Acid
Explanation:
Strong acids and bases ionize fully in an aqueous solution. Weak acids and bases also ionize, but only partially and the reaction is reversible. So how do we know if an acid or base is strong or weak? A simple way to determine strength is to add the acid or base to water— high reactivity means a stronger acid or base. This reactivity is measured with a value called the Ka or Kb value. It tells us how reactive an acid or a base is based on how many hydronium or hydroxide ions are formed during the reaction. Hope it helps :)
pls show your work thank you will mark the Brainliest
Answer:
1.42L of the 9.0M NaOH are required
Explanation:
Molarity is an unit of concentration in chemistry defined as the ratio of the moles of a solute (In this case NaOH) and the volume of the solution.
To solve this question we must know the moles of NaOH required in 4.25L of a 3.0M NaOH as follows:
4.25L * (3.0moles / L) = 12.75 moles of NaOH are required
As all NaOH must come from the 9.0M NaOH the volume we need is:
12.75 moles NaOH * (1L / 9.0 moles NaOH) =
1.42L of the 9.0M NaOH are requiredHow many molecules are in 3 moles of NaCl?
Answer:
Given : No. Of moles = 1.5
To calculate : no. Of molecules =N
We know that moles = N / 6.022 x 10²³
Therefore, 1.5 x 6.022 x 10²³ = N
Hence N = 9.0330x 10²³ molecules
What is the compound charge for Strontium phosphide?
Explanation:
¿Cuál es la carga compuesta para el fosfuro de Aluminum phosphide is a chemical compound with the formula AlP; Phosphine gas generator which is extremely toxic to any living being. estroncio?
How many grams of magnesium
sulfate (MgSO4) are dissolved in
0.965 L of a 0.0575 M solution?
Molar Mass Mg: 24.30 g/mol
Molar Mass S: 32.06 g/mol
Molar Mass O: 16.00 g/mol
Explanation:
Concentration question....
0.965L x (0.0575 mol MgSO4 / 1L) x (120.4g MgSO4 / 1 mol MgSO4) = 6.68g MgSO4
The concept molarity is used here to determine the grams of magnesium sulfate dissolved in 0.965 L of a 0.0575 M solution. The mass of magnesium sulfate in grams is 6.68 g.
What is molarity?The molarity of a solution is defined as the number of moles of the solute present per litre of the solution. It is generally represented by the unit mol/L. The equation used to calculate the molarity is:
Molarity = Number of moles of the solute / Volume of the solution in litres
The molar mass of MgSO₄ = 120.36 g/mol
We have 0.0575 M solution.
That is 0.0575 mol/L × 120.36 g/mol = 6.9207 g/L
Here we want mass in 0.965 L. So the mass is:
Mass = 0.965 L × 6.9207 g/L = 6.68 g
Thus the mass in grams of magnesium sulfate is 6.68 g.
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why does the earth experience seasons?
The ocean pressure at the depth of the Titanic wreck is 400 atm . Calculate the ocean pressure in kpa?
A)3.00 × 10^4 kPa
B)4.05 × 10^4 kPa
C)4.05 × 10^3 kPa
D)4.05 × 10^2 kPa
Answer:
4.05 × 10⁴ kPaExplanation:
To find the pressure in kPa we use the conversion
1 atm = 101.3 kPaIf 1 atm = 101.3 kPa
400 atm = 400 × 101.3 = 40520 kPa
Expressing it in standard form we have the final answer as
4.05 × 10⁴ kPaHope this helps you
Answer: 3.04 x 10 mm Hg
Explanation:
the pressure of a 250.0 mL volume of gas under 4.0 atm of pressure is decreased to 1.0 atm at constant tempture what is a new volume
Answer:
1000 mLExplanation:
The new volume can be found by using the formula for Boyle's law which is
[tex]P_1V_1 = P_2V_2[/tex]
Since we're finding the new volume
[tex]V_2 = \frac{P_1V_1}{P_2} \\[/tex]
We have
[tex]V_2 = \frac{250 \times 4}{1} = 1000 \\ [/tex]
We have the final answer as
1000 mLHope this helps you
1. If I have 45 L of He in a balloon at 25 degrees celsius and increase the temperature of the
balloon to 55 degrees celsius, what will the new volume of the balloon be?
Use Charles' Law: V1/T1 = V2/T2. We assume the pressure and mass of the helium is constant. The units for temperature must be in Kelvin to use this equation (x °C = x + 273.15 K).
We want to solve for the new volume after the temperature is increased from 25 °C (298.15 K) to 55 °C (328.15 K). Since the volume and temperature of a gas at a constant pressure are directly proportional to each other, we should expect the new volume of the balloon to be greater than the initial 45 L.
Rearranging Charles' Law to solve for V2, we get V2 = V1T2/T1.
(45 L)(328.15 K)/(298.15 K) = 49.5 ≈ 50 L (if we're considering sig figs).
What is the molarity of .65 L of solution containing 63 grams of NaCl? (dont forget to convert grams to moles)
Answer:
1.66 M
Explanation:
Molarity = moles/L solution
We have the following data:
mass NaCl = m = 63 g
volume of solution = V = 0.65 L
Thus, we first convert the mass to moles with the molar mass of NaCl (MM):
MM(NaCl) = 23 g/mol Na + 35.4 g/mol Cl = 58.4 g/mol
moles NaCl = m/MM = 63 g/(58.4 g/mol)= 1.08 mol
Finally, we divide the moles into the volume of solution to calculate the molarity:
M = moles NaCl/V = 1.66 mol/L
3. Which of the following is the correct mathematical expression to use to
calculate the pH of a 0.10 Maqueous Ba(OH)2 solution at 25°C ?
Answer:
The pH of a 0.10 Maqueous Ba(OH)2 solution at 25°C is 13.30
Explanation:
The balanced equation is Ba(OH)2(s)→Ba2++2OH−
This indicates that the concentration is 0.2 M
We will find H+ ion concentration
As we know that
[H+][OH−]=1.0×10−14M
Given -
[OH−]=2.0×10−1M
Putting value of [OH-] in above equation we get -
[H+]=5.0×10−14M
pH=−log10[H+]
pH=−log10[5.0×10−14] = 13.30.
What causes thermal pollution in rivers?
1. automobile exhaust
2. nuclear power plants
3. solar radiation
4. factory smokestacks
Answer:
nuclear power plants .....
How many grams are in 1.46 mol K2O?
Answer:
94.196 grams
Explanation:
Answer:
94.196 grams
Explanation:
12. In which equilibrium system will an increase in pressure cause a shift to the left?
A) C + O2(8) + CO2(8)
C) 2 Mg(s) + O2(8) + 2 MgO)
B) CaCO3s) <> CaO + CO2g)
D) 2 H2(g) + O2(g) + 2 H2O)
D is the answer cause two h20 + o2(g)
Construct an explanation for why the physical properties of the inner core, outer core, and lower mantle are essential for the development of Earth's magnetic field.
Answer:
The hot temperature of inner core and outer core is responsible for the production of magnetic field.
Explanation:
The physical properties of the inner core, outer core, and lower mantle are essential for the development of Earth's magnetic field because the very high temperature of inner core is responsible for the formation of magnetic field. If the inner core is not very hot so the magnetic field will not be generated and our earth's atmosphere will not be save from the solar wind. It can be blown away by the solar wind if this magnetic field is not present so we can conclude that the physical properties of inner core and outer core is important for the production of magnetic field.
can somebody explain two dimensional gas chromatography in arson investigation
Answer:
Comprehensive Two-dimensional gas chromatography, or GCxGC is a multidimensional gas
What reaction would you expect chromium to have with water
Answer: It does not react with water, but reacts with most acids. It combines with oxygen at room temperature to form chromium oxide. Chromium oxide forms a thin layer on the surface of the metal, protecting it from further corrosion (rusting).
Explanation:
A catalyst is:
one answer only pls help lol
Answer:
the second one
Explanation:
it makes the most sense
One problem with chemical reactions is that it is impossible to lower activation energy.
A) True
B) False
Answer:
false
Explanation:
Why is it difficult to say that plastics are directly causing illnesses?
Answer:
Because of the gravity of the Earth
Which of the following are also compounds? Select all that apply.
A.
CuFeS2
B.
H2O
C.
KCl
D.
Mg
E.
Cl
Answer:
option B,C and A are compound