Explanation:
Titanium is an element found in the d-block group on the periodic table. It is a transition element.
To write the electronic configuration of an element, we must know the number of electrons in them;
In a titanium atom, we have 22 electrons;
Shell notation = 2 8 10 2
Orbital notation = 1s² 2s² 2p⁶ 3s² 3p⁶ 3d² 4s²
Answer: [Ar]4s^2 3d^2
Explanation:
If there are 5 protons, how many electrons does the atom have?
If there are 5 protons, there should be 5 electrons as well. Boron as an electron configuration of 2-3 or 1s2 2s2 2p.
What is proton ?The term proton is defined as a subatomic particle found in the nucleus of every atom. Its mass is slightly less than that of a neutron and 1,836 times the mass of an electron.
The protons are considered as elementary particles. The protons are called to be composite particles, containing three valence quarks, and together with neutrons are now classified as hadrons.
Boron has an atomic number of 5. In which it has 5 protons. Therefore, the atom also has 5 electrons. Its atomic mass is 10.811. Thus, it has 11 total particles in its nucleus i.e., protons and neutrons.
Thus,If there are 5 protons, there should be 5 electrons as well. Boron as an electron configuration of 2-3 or 1s2 2s2 2p.
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difference between proton and electron
a proton is a type of particle with a positive charge and an electron is a particle with a negative charge. neutrons ould be a neutral particle.
All of the following are alkaline earth metals except.
A) Barium
B) Calcium
C) Sodium
D) Magnesium
. A certain quantity of electricity is passed through an aqueous
solution of AgNO3 and cupric salt solution connected in series. The
amount of silver deposited is 1.08 g. What is the amount of copper
deposited ? (Atomic wt. of Cu=63.54, Ag=108 g/mole).
Answer:
0.32 g
Explanation:
First, we find the number of moles n of silver deposited.
n = m/M where m = mass of silver deposited = 1.08 g and M = Atomic weight of silver = 108 g/mol
n = m/M = 1.08 g/108 g/mol = 0.01 mol
Now, the quantity of electricity Q = nF where n = number of moles of silver = 0.01 mol and F = Faraday's constant = 96500 C/mol
Q= nF = 0.01 mol × 96500 C/mol = 965 C
By the chemical equation for copper,
Cu²⁺ + 2e ⇒ Cu
2 moles of electrons deposits 1 mol of copper, that is
2 × 96500 C deposits 1 mol of copper, then 965 C will deposit x mol
x = 1 mol × 965 C/2 × 96500 C = 1/200 mol = 0.005 mol of copper
So, we find the mass of 0.005 mol of copper using
n = m/M where m = mass of copper deposited = unknown and M = Atomic weight of copper = 63.54 g/mol and n = number of moles of copper = 0.005 mol
m = nM
= 0.005 mol × 63.54 g/mol
= 0.32 g
Please help me answer this question.
Explanation:
Hydrochloric acid is HCl.
Hydrogen is H2.
Mole ratio is the numbers infront of them, which is 6 : 3.
Answer:Hydrochloric acid is HCl.
Hydrogen is H2.
Explanation:
Please respond, will give brainliest to best answer! (multiple choice)
The ion with the smallest radius is
a. Br-
b. Cl-
c. I-
d. F-
e. O2-
Answer:
D. F-
Explanation:
Br - 185pm
Cl - 175pm
I - 198pm (I'm not sure what "I" is but I guess it is iodine)
F - 147pm
[tex]O_{2}[/tex] - 152pm
=> The ion with the smallest radius is F - 147pm
Hree friends are talking about what they think causes shiny pennies to turn dull. Deandre says, "I think they turn dull because they're exposed to the air over time." Jamie says, "I think they turn dull because they get dirt on them from being dropped on the ground." Selina says, "I think there is dull metal inside the penny the entire time." Who do you agree with most and why?
Answer:
Deandre is correct.
Explanation:
When shiny pennies turn dull, due to getting rust. It gets cover with a layer of black or brown color on its surface on the exposure of air.
In this problem,
Deandre says, "I think they turn dull because they're exposed to the air over time." Jamie says, "I think they turn dull because they get dirt on them from being dropped on the ground." Selina says, "I think there is dull metal inside the penny the entire time.
Out of three friends, Deandre is correct. Shiny pennies turn dull because they're exposed to the air over time.
I will give you 100 points and mark you as brainilest if you answer the whole thing correctly.
Answer:
1.)[tex]Al_{2} O_{3}[/tex]
2.) [tex]Li_{3} N\\[/tex]
3.) 2HCl
4.) MgO
5.) Mg and [tex]O_{2}[/tex]
6.) [tex]H_{2}[/tex] and [tex]O_{2}[/tex]
7.)Na and [tex]Br_{2}[/tex]
8.) 3 aluminums and 3 chlorides
Explanation:
the law of states that mass cannot be created nor destroyed during a chemical reaction ?
a: conservation of mass
b: averages
c: conservation of momentum
d: conservation of energy
Which of the following is described by the equation H20(1) + heat → H2O(g)?
A. Freezing
B. Condensing
C. Evaporating
D. Melting
Explanation:
When water changes state from liquid to gas, this is Evaporation. (C)
When you apply heat to liquid water it will convert into gas. This process is called evaporation.
Why does salt sprinkled on icy roads cause the ice to melt?
Answer:
The actual reason that the application of salt causes ice to melt is that a solution of water and dissolved salt has a lower freezing point than pure water. When added to ice, salt first dissolves in the film of liquid water that is always present on the surface, thereby lowering its freezing point below the ices temperature. Ice in contact with salty water therefore melts, creating more liquid water, which dissolves more salt, thereby causing more ice to melt, and so on.
what does the slope of a distance vs time graph tell you? yes
Answer:
an increase of acceleration or decrease of acceleration
Explanation:
9.
How would your mass and weight differ on the moon? (The gravitational force on the
moon is 1/6 the force on Earth).-
Answer: Your mass would be the same, but you would weigh less because the gravity on the moon is less than it is on Earth.
Explanation:
Calculate the total pressure in a mixture of 8 g of dioxygen and 4 g of dihydrogen confined in a vessel of 1 dm8 at 27 ∘C. (R = 0.083 bar dm8 K−1 mol−1
Answer:
Total pressure = 56.77 bar
Explanation:
Given data:
Mass of dioxygen = 8 g
Mass of dihydrogen = 4 g
Volume of vessel = 1 dm³
Temperature = 27°C (27+273 = 300 K)
R = 0.083 bar.dm³ / mol.K
Total pressure = ?
Solution:
Number of moles of dioxygen:
Number of moles = mass/molar mass
Number of moles = 8 g/ 32 g/mol
Number of moles = 0.25 mol
Pressure of dioxygen:
PV = nRT
P = nRT/V
P = 0.25 mol × 0.083 bar.dm³ / mol.K × 300 K / 1 dm³
P = 6.97 bar.dm³ /1 dm³
P = 6.97 bar
Number of moles of dihydrogen:
Number of moles = mass/molar mass
Number of moles = 4 g/ 2 g/mol
Number of moles = 2 mol
Pressure of dihydrogen:
PV = nRT
P = nRT/V
P = 2 mol × 0.083 bar.dm³ / mol.K × 300 K / 1 dm³
P = 49.8 bar.dm³ /1 dm³
P = 49.8 bar
Total pressure of mixture in a vessel:
Total pressure = P (O₂) + P(H₂)
Total pressure = 6.97 bar + 49.8 bar
Total pressure = 56.77 bar
NaH is an iconic compound because
NaH is an ionic compound as shown below, and is made of sodium cations (Na+) and hydride anions (H-). It has the same octahedral crystal structure as NaCl, with each sodium ion surrounded by six hydride ions. The free hydride ions give this molecule its strong basic character. hope this helps
Calculate the mass of Aluminum Bromide that can be made with 5.6 moles of Aluminum
The mass of Aluminum tri bromide that can be made with 5.6 moles of Aluminum is 1,492.90 grams.
What is the relation between mass & moles?Relation between the mass and moles of any substance will be calculated by using the below equation as:
n = W/M, where
W = given massM = molar massGiven chemical reaction is:
2Al + 3Br₂ → 2AlBr₃
From the stoichiometry of the reaction, it is clear that:
2 moles of Al = produces 2 moles of AlBr₃5.6 moles of Al = produces 2 moles of AlBr₃Now mass of AlBr₃ will be calculated by using the above equation as:
W = (5.6mol)(266.59g/mol) = 1,492.90g
Hence required mass of AlBr₃ is 1,492.90g.
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If you put a piece of zinc into a solution of copper (I) sulfate and allow the single replacement reaction to go to completion, how will you know which of the reactants is the limiting reactant? Write the balanced equation, including the states of matter of the reactants and products, to help support your answer.
Explanation:
Reaction of zinc metal in copper sulfate solution.
[tex]\begin{array}{ll}\text { Oxidation : } & \mathrm{Zn}(s) \rightarrow \mathrm{Zn}^{2+}(a q)+2 e^{-}\\\text {Reduction : } & \mathrm{Cu}^{2+}(a q)+2 e^{-} \rightarrow \mathrm{Cu}(s) \\\hline \text { Full Reaction : } & \mathrm{Zn}(s)+\mathrm{Cu}^{2+}(a q) \rightarrow \mathrm{Zn}^{2+}(a q)+\mathrm{Cu}(s)\end{array}[/tex]
Zinc is listed above copper on the activity series, this means that zinc is more easily oxidized than copper. That is why copper(II) ions can act as an oxidizing agent when put into contact with zinc metal. Ions of any metal that is below zinc, such as lead or silver, would oxidize the zinc in a similar reaction.
An isotope of carbon has 6 protons and 8 neutrons. What is the atomic mass of this element?
6
O 12
O 12.011
O 14
Answer:
14
Explanation:
Atomic mass = protons + neutrons
6 + 8 = 14
How many moles are there in 1.68 * 10 ^ 24 molecules of nitrogen dioxide?
Answer:
2.79 molesExplanation:
To find the number of moles in a substance given it's number of entities we use the formula
[tex]n = \frac{N}{L} \\[/tex]
where n is the number of moles
N is the number of entities
L is the Avogadro's constant which is
6.02 × 10²³ entities
From the question we have
[tex]n = \frac{1.68 \times {10}^{24} }{6.02 \times {10}^{23} } \\ = 2.790697 ...[/tex]
We have the final answer as
2.79 molesHope this helps you
According to the second law of energy, most energy is wasted in the form of ________
A. sound
B. heat
C. electricity
D. light
what is the energy source that powers plate movement?
A magma and lava
B Earth's magnetic field
C the sun
D Earth's hot interior
Answer:
D Earth's hot interior
Explanation:
The internal heat engine of the earth is the energy source that powers plate movement.
The sun drives the surface process and provides energy for the external heat engine
The earth's interior sources it heat from: decays of radioactive isotopesremnant heat from the formation of the earthfrictional heating from the movement of the earthTherefore, the heat is used to melt rocks and set up convection currents that drives plate movements.
The molar solubility of C a ( O H ) 2 C a ( O H ) 2 was experimentally determined to be 0.019 M. Based on this value, what is the K s p K s p of C a ( O H ) 2 C a ( O H ) 2 ?
Answer:
Ksp = 2.74 x 10⁻⁵
Explanation:
The solubility equilibrium for Ca(OH)₂ is the following:
Ca(OH)₂(s) ⇄ Ca²⁺(aq) + 2 OH⁻(aq)
I 0 0
C + s + 2s
E s 2s
According to the ICE table, the expression for the solubility product constant (Kps) is:
Ksp = [Ca²⁺] x ([OH⁻])² = s x (2s)² = 4s³
Then, we calculate Ksp from the solubility value (s):
s = 0.019 M
⇒ Ksp = 4s³ = 4 x (0.019)³ = 2.74 x 10⁻⁵
The Ksp value of Ca(OH)2 is [tex]2.74 \times 10^-^5[/tex].
What is Ksp value?The Ksp is the solubility product constant.
The solubility equilibrium is
[tex]Ca(OH)_2(s) = Ca^2^+(aq) + 2 OH^-(aq)[/tex]
I 0 0
C s +2s
E s 2s
By the ICE table, the expression for Ksp is
[tex]\rm Ksp = [Ca^2^+] \times ([OH^-])^2 = s \times (2s)^2 = 4s^3[/tex]
Now, calculate the Ksp
s, solubility value is 0.019 M
then, [tex]\rm Ksp = 4s^3= 4 \times (0.019)^3 = 2.74 \times 10^-^5[/tex]
Thus, the Ksp value is [tex]2.74 \times 10^-^5[/tex]
Learn more about Ksp
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NEED HELP ASAP! Newton's Law of Gravity says that any the effect of gravity between two objects depends on what two factors?
A: inductance and capacitance
B: Newtons and kilograms.
C: distance and mass.
D:joules and kelvins.
(will mark as brainiest)
(don't answer if you don't know please).
Answer:
C. Distance and mass.
Explanation:
Objects that have greater mass have more force of gravity between them.
How many moles of CO2 are found in 2.5 L of CO2?
Answer: 2.5L x 1mol/22.4 = 0.112 mol
Explanation:
The gases in a hairspray can are at a temperature of 27 C and a pressure of 30 psi. if the gases can reach a pressure of 90 psi, the can will explode.To what Temperature must the gases be raised in order for the can to explode? You can assume volume remains constant..... please help!!!
The temperature for the can explode : 627 °C
Further explanationGay Lussac's Law
When the volume is not changed, the gas pressure is proportional to its absolute temperature
[tex]\tt \dfrac{P_1}{T_1}=\dfrac{P_2}{T_2}[/tex]
T₁=27 C+273=300 K
P₁=30 psi
P₂=90 psi
[tex]\tt T_2=\dfrac{P_2\times T_1}{P_1}\\\\T_2=\dfrac{90\times 300}{30}\\\\T_2=900~K=627^oC[/tex]
How many grams are in 56 L of chlorine gas?
Answer:
Since 1 L equals to 1000 microlitres, and 1 microlitre equals to 1 gram, there are 56 * 1000 = 56000 grams of chlorine gas in 56 L of chlorine gas.
Explanation:
Hope this helped!
How do Ionic bods form in binary compounds?
Answer:
Ionic bonding is the complete transfer of valence electron(s) between atoms and is a type of chemical bond that generates two oppositely charged ions. By losing those electrons, these metals can achieve noble-gas configuration and satisfy the octet rule. ...
Explanation:
What is the BEST reason that the older children did not show the symptoms of pellagra?
I need help!!
How many joules are needed to change the temperature of 25 g of water from 40 C to 100 C?
Answer:
Explanation:
2
I forgot, please help!
