Answers
Answer:
Boron
Explanation:
Because it has a complete 2s orbital and therefore, an increased shielding of the 2s orbital will reduce the ionisation energy.
Final answer:
Among boron, carbon, aluminum, and silicon, aluminum has the lowest first ionization energy due to its position on the periodic table, which is further to the left and in a higher period than the other elements.
Explanation:
Ionization energy refers to the energy necessary to remove an electron from an atom in its gaseous state. The element with the lowest first ionization energy among boron, carbon, aluminum, and silicon is aluminum. Ionization energy increases from left to right across a period in the periodic table and from bottom to top in a group. Thus, aluminum, being to the left of boron, carbon, and silicon, has the lowest first ionization energy. Furthermore, aluminum is in the third period, which is below boron and carbon's second period.
Learn more about Ionization Energy here:
#SPJ3
Related Questions
Of the following, which element has the highest first ionization energy?LiCsAtF
What is the chemical formula for the ionic compound formed by Au3+ andHSO3-?
14) Describe the Cloud Model.
Predict the products and write balanced net ionic equations for the following reactions. (g) SnCl2 is added to KMnO4 solution (acidic) forming Mn2
Answers
Answer:
C4H4O8
Explanation:
The molecular formula of a compound with empirical formula: CHO2 can be calculated as follows:
(CHO2)n = 180g/mol
{12 + 1 + 16(2)}n = 180
(12+1+32)n = 180
(45)n = 180
n = 180/45
n = 4.
The molecular formula = (CHO2)4
= C4H4O8
Answers
Answer: The daughter nuclei is
Explanation:
Electron capture is defined as the process in which an electron is drawn to the nucleus where it combines with a proton to form a neutron and a neutrino particle.
The chemical equation for the reaction of electron capture of Zinc-63 nucleus follows:
The parent nuclei in the above reaction is Zinc-63 and the daughter nuclei produced in the above reaction is copper-63 nucleus.
Hence, the daughter nuclei is
Final answer:
When Zinc-63 undergoes electron capture, it results in the creation of a Copper-63 daughter nucleus. This is due to the atomic number decreasing by one (from 30 to 29) during electron capture, but the mass number remaining unchanged.
Explanation:
Electron capture is a process where a proton-rich nucleus absorbs an inner shell electron, which results in a conversion of a proton into a neutron, and the emission of an electron neutrino. In doing so, the atomic number decreases by one, while the mass number stays the same. Therefore, in the case of 63 Zn (zinc-63), the atomic number is 30 prior to electron capture. After electron capture, the atomic number will decrease by one to become 29, leading to the production of 63 Cu (copper-63).
Remember that the atomic number (bottom number), also known as the proton number, determines the element. Therefore, in our example, Zn changes to Cu. The fact that the mass number (top number) remains the same is due to the total number of protons and neutrons (nucleons) being conserved.
Learn more about Electron Capture here:
#SPJ11
b. Nickel(III) sulfate
c. Sodium permanganate
d. Iron(II) bromide
Answers
Answer:
a.
The molarity of Co³⁺ is 0.027 M
The molarity of Cl⁻ 0.081 M
b.
The molarity of Ni³⁺ is 0.022 M
The molarity of SO₄²⁻ is 0.033 M
c.
The molarity of Na⁺ is 0.031 M
The molarity of MnO₄⁻ is 0.031 M
d.
The molarity of Fe²⁺ is 0.021 M
The molarity of Br⁻ is 0.042 M
Explanation:
The molarity of each ion is the molarity of the salt times the number of ions in the formula. First, we will calculate the molarity of each salt.
a. Cobalt(III) chloride. CoCl₃
The molar mass of CoCl₃ is 165.29 g/mol. The molarity of CoCl₃ is:
The molarity of Co³⁺ is 1 × 0.027 M = 0.027 M
The molarity of Cl⁻ is 3 × 0.027 M = 0.081 M
b. Nickel(III) sulfate. Ni₂(SO₄)₃
The molar mass of Ni₂(SO₄)₃ is 405.57 g/mol. The molarity of Ni₂(SO₄)₃ is:
The molarity of Ni³⁺ is 2 × 0.011 M = 0.022 M
The molarity of SO₄²⁻ is 3 × 0.011 M = 0.033 M
c. Sodium permanganate. NaMnO₄
The molar mass of NaMnO₄ is 141.92 g/mol. The molarity of NaMnO₄ is:
The molarity of Na⁺ is 1 × 0.031 M = 0.031 M
The molarity of MnO₄⁻ is 1 × 0.031 M = 0.031 M
d. Iron(II) bromide. FeBr₂
The molar mass of FeBr₂ is 215.65 g/mol. The molarity of FeBr₂ is:
The molarity of Fe²⁺ is 1 × 0.021 M = 0.021 M
The molarity of Br⁻ is 2 × 0.021 M = 0.042 M
Answers
Answer:
171.8°C
Explanation:
V1= 1780ml, V2= 2.55L= 2550L, T1= 273+37.5= 310.5
T2=?
Applying
V1/T1 = V2/T2
1780/310.5 = 2550/T2
T2= 444.8K -273 = 171.8°C
Answers
Intensive properties are physical properties that do not depend on the amount or size of the material being measured. In other words, they remain constant regardless of the quantity of the substance.
The correct answer is b. magnetism.
Out of the options provided:
a. mass is an extensive property because it depends on the amount of the substance. If you have more of a substance, you will have a greater mass.
b. magnetism is an intensive property because it remains the same regardless of the size or amount of the material with the magnetic property.
c. shape is not a standard property used to classify intensive or extensive properties. It is more of a description of the object's form.
d. volume is an extensive property because it depends on the size and amount of the substance. If you have more of a substance, you will have a larger volume.
Learn more about magnetism from the link given below.
#SPJ6
Answer:
b. Magnetism (sorry im very late)
Explanation:
Intensive properties do not depend on size, no matter what it doesn't. For example, magnetism, density, melting and boiling points, and color. All of those support intensive property.
Answers
Answer:
Saturated.
Explanation:
Hello,
Animal fats are lipids derived from animals which are commonly solid at room temperature and mainly constituted by triglycerides which are strictly chemically saturated with hydrogen, it means they do not tend to have double or triple bonded carbon atoms but just single-bonded carbons. This fact suggests that animal fats provide more energy than vegetable fats because they have more C-H bonds that when broken increase the total provided energy.
Best regards.