Answer:
c) parallel to the wire
Explanation:
The concept is based on right-hand thumb rule that states that the thumb points in the direction of the current and the fingers will represent the direction of the lines of magnetic force.
As the current is moving in the east-west direction. Using the right-hand thumb rule, the direction of the magnetic field at a point below the wire is from north to south. So, when viewed from the west end, the magnetic field at a point will be anti- clockwise.
Hence, the correct answer is "b) anti- clockwise".
Answer:
sodium/potassium/rubidium/caesium/francium
Explanation:
all are group I elements, so they all have similar properties
Answer:
The fraction of lidocaine is 0.999
Explanation:
The number of moles of MOPS:
The number of moles of NaOH:
In 20 mL of solution, the molarity is:
The acid form is:
1x10⁻³ - 7.4x10⁻⁴ = 2.6x10⁻⁴moles
About lidocaine, the pKa is:
Ka = 1x10⁻¹⁴/8.7x10⁻⁷=1.15x10⁻⁸
The fraction of lidocaine is:
Answer is: selenium (Se).
Black selenium (allotrope modification) is irregular, complex, brittle and lustrous solid.
The commercial use for selenium is glassmaking.
Selenium is an element (nonmetal) with atomic number 34 (34 protons and 34 electrons)-
Electronic configuration of selenium atom: ₃₄Se 1s²2s²2p⁶3s²3p⁶3d¹⁰4s²4p⁴.