What amount of energy (kJ) is needed to completely ionize 2.78 mol hydrogen atoms?

Q: Calculate the mass of Li if... In a reaction between water and lithium, 82.14 J of energy was…

A: Interpretation - Mass of Li. Concept introduction- Molar mass- The mass of one mole of a substance…

Q: A main group element with the valence electron configuration 2s22p3 is in periodic group__________…

A: Given electronic configuration is 2s22p3

Q: Conside following data for yttrium: atomic mass 88.906 electronegativity electron affinity…

A: Using given data we will answer the following questions one by one.

Q: he first 4 IPs for an element are approximately 738kj/mole, 1450 kj/mole, 7.7x103 kj/mole, and…

A: According to given information  The ionization potential of element is 738 KJ/mol and the second…

Q: how much energy is needed to ionize hydrogen?  value in kJ/mol

A: We have to calculate the amount of energy required to ionize hydrogen in kJ/mol. Introduction: The…

Q: Which of the following reactions represents an electron gain energy that would be positive (i.e.…

A: We have to choose the following given options have an electron gain energy that would be positive…

Q: How does a proton affect an element's properties?

A: Matter is composed from the tiny particles known as atoms . Atoms are made from the subatomic…

Q: Calculate the energy change per mole for the following reaction? H+HHe The mass of H is 2.01355 amu…

A:

Q: A photon of light from a laser has an energy of 2.287 × 10−19 J. What is the total energy in two…

A: The objective of this question is to find the total energy in two moles of photons, given the energy…

Q: I + II ||| IV

A: We know the stability of the intermediate which is carbocation in this case, follows- 1o<2o<3o…

Q: Describe the formation of heavier elements during stars' formation and evolutions; Give at least 10…

A: Introduction :  An element is a group of atoms which have same number of protons, in pure form they…

Q: 5. 10.0 moles of an ideal gas (the system) is confined in a piston and cylinder assembly similar to…

A:

Q: X(g) → X*(g) + e X+(g) → X²+(g) + e¯ X2+(g) → X³+(g) + e IE₁ = 740 kJ/mol IE₂ = 1450 kJ/mol IE3 =…

A: The amount of energy required for removing an electron from isolated gaseous atom.

Q: What is the number of electrons for GaI3?

A: The question is based on the concept of chemical bonding. We have to identify total electron present…

Q: How much energy (kJ) is required to remove all the 5s electrons in 8.78 g of strontium (Sr)? State…

A: The question is based on the concept of ionization energy. it is defined as the amount of energy…

Q: Describe the formation of positiveand negative ions.

A: To find: Description about the formation of positive and negative ions

Q: In the periodic table, elements in group 6A

A: Introduction: In periodic table ,group 6a elements are Oxygen, Sulphur,Selenium, Tellurium,…

Q: An acid is a type of material that will increase the concentration of  ___ in water solution.…

A: Autoionization of water takes place as follows:

Q: A chemist measures the energy change AH during the following reaction: C;Hg(9)+50,(9) –→ 3…

A: Given reaction: C3H8 (g) + 5 O2 (g) → 3 CO2 (g) + 4 H2O (l)             ∆H = -2220 kJ We have to…

Q: Explain the organization of an atom of carbon.

A: The protons, neutrons, and electrons are the salient features of an atom. The protons present in the…

Q: Which of these is lower in energy and why?

A:

Q: A chemist measures the energy change AH during the following reaction 2 Fe,O3(s) → 4 FeO(s)+O,(g)…

A:

Q: For a Hydrogen Atom these energies can be calculated by the following equation: Lan he -- Ar - R…

A: Energy of Helium ion is given by, Eelectron=-(8.7149×10-18n2) J   The energy released as a photon…

Q: Would you agree to buy 1.23 x 1021 platinum atoms for $21? Explain why or why not, showing all work.…

A: 1 mole = 6.022×1023 [ Avogadro's number ] The mass of 1 mole of atoms of an element is called its…

Q: Не N Ne P. Na

A: Given,

Q: CaO(s) -635.5 NaHCO3(s) -947.7 Ca(OH)2(s) -986.59 Na,CO3(s) -1131 – 1432.7 - 1575.2 CaSO,() NACI(s)…

A:

Q: Which of the following elements is stable? O Sodium in group 1 Aluminum in Group 13 O Chlorine in…

A: Argon in group 18

Q: What quantity of Cu, in moles, can these electrons produce? Cu deposited: 0.3952 g 6.219 x 10 mol Cu…

A:

Q: How to calculate the relative atomic mass (6.015122) of 6Li, from the atomic mass of Lithium?

A: As we know,  Relative atomic mass = atomic mass of an atom / 1 amu

Q: Discuss the application of thorium as a source of nuclear fuel

A: Thorium can also be used as alternative source of nuclear fuel due to following applications: There…

Q: What is -470.338 kJ/mol to the nearest kilojoule

A: To round -470.338 kJ/mol to the nearest kilojoule, we look at the digit in the thousandth place…

Q: how to correlate the size of an atom with its chemical reactivity?

A: The size of atom is the distance between the center of nucleus and the valence electron.  The size…

Q: what is iodine 131 electronic arrangement

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Q: what is the elemental form of fluorine? F(g) F- (aq) F+(g) or none of the these?

A:

Q: From Einstein’s most famous equation, how much energy in British therrmal unit (btu) can…

A: Albert Einstein was a great scientist. He gave a theory of relativity and its most famous equation…

Q: Which equation correctly represents the first ionization of calcium? Group of answer choices Ca (g)…

A:

Q: In a reaction between water and lithium, 82.14 J of energy was released. The molar enthalpy change…

A: Interpretation - Mass of Li reacted. Concept introduction- Molar mass- The mass of one mole of a…

Q: What is the charge of hydrogen in the inorganic acid? * O Positive O Partially positive O Negative O…

A: The more electronegative atom has partial negative charge and less electronegative atom has partial…

Q: what element would you expect to be very stable and unlikely to react with other elements

A: Given property of the elements,       Very stable and unlikely to react with other elements

Q: 3. What is the effective nuclear charge on 3(a) the outer two electrons of B?  3(b) the inner two…

A: Given element is Boron , B Atomic number = 5 Electronic configyration : 1s22s22p1

Q: Consider the following data for indium: atomic mass electronegativity electron affinity ionization…

A: The question is based on the concept of ionization energy. Ionization energy is defined as the…

Q: Consider the following data for chromium: atomic mass 51.996 electronegativity electron affinity…

A: The objective of the question is to answer the question related to the given reactions.

Q: How much energy (in MJ) is required to ionize 21.14 moles of hydrogen atoms?

A: No of moles of Hydrogen atoms = 21.14Ionisation energy of Hydrogen atom = 13.6 eV