Answer:
Most similar - Lithium
Least similar - Phosphorus
Explanation:
Rubidium is an element in group 1A of the periodic table. It is a metal and forms an ionic compound with chlorine. The formula of the compound is RbCl.
If we look at the options, Lithium is also a group 1A element and forms an ionic compound with chlorine having the formula LiCl which is very much similar to RbCl chemically.
Phosphorus is a nonmetal. Its compounds with chlorine, PCl3 and PCl5 are covalent and does not resemble RbCl in any way.
What causes radiation?
Answer:
It can come from unstable atoms that undergo radioactive decay, or it can be produced by machines. Radiation travels from its source in the form of energy waves or energized particles. There are different forms of radiation and they have different properties and effects
Which name for an ionic compound is
incorrect?
Chromium(IID fluoride (for CrF3 )
Copper(ID) oxide (for Cuo)
Potassium(I bromide (for KBr)
Answer:
no se ingles todavía no aprendo a hablar inglés ya si estuvieran en español los respondia
which statement describes the energy and bonding changes as two atoms of fluorine become a molecule of fluorine?
Statement that gives description as regards energy and bonding changes between atoms such as fluorine become a molecule of fluorine, bond Energy is released as a bond is formed. Thus option 4 is correct.
What is bond energy ?The Bond Energy otherwise called as bond enthalpy is a quantity that offers insight into the strength of a chemical bond.
The ‘bond energy’ can also be represented as “the average value obtained from the bond dissociation enthalpies of all the chemical bonds in a given chemical compound.
The bond energy of a chemical bond is directly proportional to the stability of that bond which implies that the greater the bond energy o between two atoms, the greater the stability of that chemical bond.
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Your question was incomplete. The probable question.
Which statement describes the energy and bonding changes as two atoms of fluorine become a molecule of fluorine?
1.Energy is absorbed as a bond is broken.
2.Energy is absorbed as a bond is formed.
3.Energy is released as a bond is broken.
4.Energy is released as a bond is formed.
(a) calculate the %ic of the interatomic bond for the intermetallic compound tial3. (b) on the basis of this result, what type of interatomic bonding would you expect to be found in tial3?
Answer:
See explanation
Explanation:
We know that
%ic of the interatomic bond = [1 - e^-(XA - XB)^2/4] * 100%
Now;
XA = electronegativity of Ti = 1.61
XB = electronegativity of Al = 1.54
Substituting values;
%ic of the interatomic bond = [1 - e^-(1.61 - 1.54)^2/4] * 100%
%ic of the interatomic bond = 0.12%
Given the low %ic of the interatomic bond, the bond is metallic.
The percent ionic character is 0% and the type of interatomic bonding would be metallic.
The percent ionic character can be determined by using the formula,
[tex]1-exp{-0.25(Xa-Xb)^{2} ][/tex]
• In the given equation, Xa and Xb refers to the electronegativities of the elements.
• The intermetallic compound given is TiAl₃.
• Based on the electronegativity table, the electronegativity of Al or Xa is 1.5 and the electronegativity of Ti or Xb is 1.5.
Now putting the values in the above formula we get the % ionic character,
[tex]= 1-exp [-0.25 (Xa -Xb)^{2}]*100%\\\\\\=1-exp [-0.25 (1.5 -1.5)^{2}]*100%\\[/tex]
[tex]= 0 percent[/tex]
Thus, the ionic bond character is 0% and the compound TiAl₃ comprises two metals, it exhibits metallic bonding.
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The reaction used to produce solid iron ore is below.
Fe2O3 (s) + 3CO (g) à 2Fe (s) + 3CO2 (g)
The reaction of Fe2O3 with CO has a theoretical yield of 129 grams solid Fe. In the laboratory, your reaction produces 87.4 grams of solid Fe. What is the percent yield?
What is the theoretical yield of SO3 produced by 4.91 g of S?
Answer:
12.2 g
Explanation:
Step 1: Write the balanced equation for the synthesis of SO₃ from S
S + 1.5 O₂ ⇒ SO₃
Step 2: Calculate the moles corresponding to 4.91 g of S
The molar mass of S is 32.07 g/mol.
4.91 g × 1 mol/32.07 g = 0.153 mol
Step 3: Calculate the theoretical yield, in moles, of SO₃ from 0.153 moles of S
The molar ratio of S to SO₃ is 1:1. The moles of SO₃ produced are 1/1 × 0.153 mol = 0.153 mol.
Step 4: Calculate the mass corresponding to 0.153 moles of SO₃
The molar mass of SO₃ is 80.06 g/mol.
0.153 mol × 80.06 g/mol = 12.2 g
Explain the concept of law of multiple proportions
a category of classification below a kingdom? A phylum B domain C species
Answer:
Phylum
Explanation:
After that it goes class, order, family, genus, and finally species. In that order, BTW before kingdom is domain.
Answer:
Phylum
Explanation:
formula for trichlorine tetroxide
Which pair of elements will form an ionic bond?
Answer: A pair of elements will most likely form an ionic bond if one is a metal and one is a nonmetal. These types of ionic compounds are composed of monatomic cations and anions
Explanation:
Please help me I need this really quick
Answer:
Produce CO2 = Both
Produces oxygen = Both
Use CO2 in photosynthesis = Both
Use O2 in cellular respiration = Both
Hope this helps! :)
bromine
+
calcium iodide ® calcium bromide + iodine
Answer:
Br2 + CaI2 = CaBr2 + I2
Explanation:
Disclaimer: Not sure what you're asking, however, I will provide you with the full balanced equation.
Br2 + CaI2 = CaBr2 + I2
How many protons does isotope of carbon- 14 atom have
Answer:
Number of protons in Carbon - 14 atom [tex]6[/tex]
Explanation:
The atomic number of carbon 14 atom is [tex]14[/tex]
Number of neutrons in the nucleus of Carbon-14 atom [tex]= 8[/tex]
Atomic number is equal to the sum of neutrons and protons
Number of protons in Carbon - 14 atom [tex]= 14 -8 = 6[/tex]
How and why do we see colors?
Answer:
Light receptors within the eye transmit messages to the brain, which produces the familiar sensations of color. Newton observed that color is not inherent in objects. Rather, the surface of an object reflects some colors and absorbs all the others. We perceive only the reflected colors.
What is Magnesium phosphide cation and Anion
Answer:
Magnesium Phosphide has a formula of Mg3P2 . Magnesium is a metal cation with a charge of Mg+2. Phosphorus is a nonmetal anion with a charge of P−3. In order to bond ionically the charges must be equal and opposite
Explanation:
In an ionic bond, how does a sulfur atom achieve an octet of electrons?
By gaining 2 electrons
By gaining 6 electrons
By losing 2 electrons
By losing 6 electrons
Suppose a student repeats a measurement two times and then calculates the standard deviation. Because the standard deviation is small, the student reports that their experiment was extremely precise. Is the student's conclusion appropriate?
A) No, because there were not enough measurements to use standard deviation.
B) Yes, because a small standard deviation indicates greater precision
C) Yes, because a small data set always has excellent precision
D) No, because a large standard deviation indicates greater precision
Answer:b
Explanation:
How many atoms of oxygen are on the reactants side of this balanced equation?
2AgNO3 (aq)+ Cu(s) —Cu(NO3)2 (aq)+ 2Ag(s)
12
2
3
6
Answer:
Explanation:
I tried to figure it out but my head wasn’t working sorry
What is a membrane?
A: Another term for a cells nucleus
B: a sort of “skin that encloses something
C: A type of genetic material
D: A single-called organism
7. Circle the number that is larger in each pair.
5.6 x 10-6 or
5.6 x 10-5
10 because it's a large number
How many atoms of which elements are represented by the following formula?
H3PO4
A balloon with a volume of 0.5L at 293K is cooled to 20K. What is the balloon's new
volume?
Answer:
0.03 L
Explanation:
Step 1: Given data
Initial volume of the balloon (V₁): 0.5 LInitial temperature of the balloon (T₁): 293 KFinal volume of the balloon (V₂): ?Final temperature of the balloon (T₂): 20 KStep 2: Calculate the final volume of the balloon
The balloon is filled with air. If we assume it behaves as an ideal gas, we can calculate the final volume of the balloon using Charles' law.
V₁/T₁ = V₂/T₂
V₂ = V₁ × T₂/T₁
V₂ = 0.5 L × 20 K/293 K = 0.03 L
a certain kind of light has a wavelength of 4.6 micrometers what is the frequency of this light and gigahertz? Use c= 2.998 × 10^8 m/s for the speed of light.
Answer:
6.52×10⁴ GHz
Explanation:
From the question given above, the following data were obtained:
Wavelength (λ) = 4.6 μm
Velocity of light (v) = 2.998×10⁸ m/s
Frequency (f) =?
Next we shall convert 4.6 μm to metre (m). This can be obtained as follow:
1 μm = 1×10¯⁶ m
Therefore,
4.6 μm = 4.6 μm × 1×10¯⁶ m / 1 μm
4.6 μm = 4.6×10¯⁶ m
Next, we shall determine frequency of the light. This can be obtained as follow:
Wavelength (λ) = 4.6×10¯⁶ m
Velocity of light (v) = 2.998×10⁸ m/s
Frequency (f) =?
v = λf
2.998×10⁸ = 4.6×10¯⁶ × f
Divide both side by 4.6×10¯⁶
f = 2.998×10⁸ / 4.6×10¯⁶
f = 6.52×10¹³ Hz
Finally, we shall convert 6.52×10¹³ Hz to gigahertz. This can be obtained as follow:
1 Hz = 1×10¯⁹ GHz
Therefore,
6.52×10¹³ Hz = 6.52×10¹³ Hz × 1×10¯⁹ GHz / 1Hz
6.52×10¹³ Hz = 6.52×10⁴ GHz
Thus, the frequency of the light is 6.52×10⁴ GHz
g 8. A hydrogen atom is initially a rest and in the ground state. A proton with kinetic energy 1000 eV scatters off the atom. In the process the hydrogen atom is ionized. The kinetic energy of the ionized electron is measured to be 15.2 eV and the kinetic energy of the proton produced from the ionization of hydrogen is 4.3 eV. What would be the final kinetic energy of the projectile proton after the collision
Answer:
Explanation:
Ionization energy of hydrogen atom is 13.6 eV . This energy will be provided by energetic proton , the kinetic energy of which is 1000 eV. The kinetic energy of ionized electron is 15.2 eV . Kinetic energy of proton produced from from the ionization of hydrogen or the nucleus of the hydrogen atom is 4.3 eV . All these energy must have come from kinetic energy of initial proton.
So kinetic energy of projectile proton after collision
= 1000 - ( 13.6 + 15.2 + 4.3 ) eV.
= 966.9 eV .
Help plzzzzz it's due today ----- Would Shining light on the reaction increase or decrease the reaction rate
Answer:
increase
Explanation:
Reactions that are initiated by light are called photochemical reactions. The brighter the light, the faster the reaction.
Answer: An increase in temperature typically increases the rate of reaction. An increase in temperature will raise the average kinetic energy of the reactant molecules. Therefore, a greater proportion of molecules will have the minimum energy necessary for an effective collision (Figure. 17.5 “Temperature and Reaction Rate”).
Explanation:
Is salt water considered a mixture or a solution?
Answer: Salt water is a solution because it has these two characteristics: it has the same concentration of each of its parts throughout the solution, and it can be separated by some physical process.
Explanation: Literally learning about this in my science class XD
Argon makes up about 0.93% of our atmosphere. If the atmospheric pressure is 760 mm Hg, what is the pressure contributed by argon?
Answer:
[tex]P_{Ar}=7.068mmHg[/tex]
Explanation:
Hello!
In this case, according to the given percent of argon in our atmosphere, it is possible to compute the pressure contributed by it as shown below:
[tex]P_{Ar}=P_{atm}*0.93\%[/tex]
Thus, we plug in to obtain:
[tex]P_{Ar}=760mmHg*0.0093\\\\P_{Ar}=7.068mmHg[/tex]
Best regards!
The pressure of the argon gas will be equal to [tex]P_{Ar}=7.068 \rm\ mmHg[/tex]
What will be the pressure of the argon gas?Pressure is defined as the normal force acting on any surface in the case of gases it is the normal force acting on the surface of the earth.
now it is given in the question that the Argon contains 0.93% part in the atmosphere.
So here are the calculations
[tex]\rm P_{Ar}=P_{Atm}\times 0.93[/tex]%
[tex]\rm P_{Ar}=700\times 0.93[/tex]%
[tex]\rm P_{Ar}=7.068\ mmHg[/tex]
Thus the pressure of the argon gas will be equal to [tex]P_{Ar}=7.068 \rm\ mmHg[/tex]
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what is the electron dot structure of AsClBr2? Pls pls pls help me
Answer:
Explanation:
Sorry, I don't really know about this. I hope it helps!
1) How many moles of water does 6.02 x 1023 molecules
represent?
Answer:
1.00 mol
Explanation:
Step 1: Given data
Molecules of water: 6.02 × 10²³ molecules
Step 2: Calculate the number of moles corresponding to 6.02 × 10²³ molecules of water
In order to convert molecules to moles, we need a conversion factor. In this case, we will use Avogadro's number: there are 6.02 × 10²³ molecules in 1 mole of molecules.
6.02 × 10²³ molecules × 1 mol/6.02 × 10²³ molecules = 1.00 mol (we keep 3 significant figures)
please help me out right now
with what telll meeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee