<h3>
Answer:</h3>
60 %
<h3>
Explanation:</h3>
We are given ;
- Work input as 5000 Joules
- Work output as 3000 Joules
We are required to calculate the efficiency of the machine;
What is efficiency?
- Efficiency is the ratio of work output to inputs expressed as a percentage.
Efficiency = (work output ÷ work input) × 100
= (3000 J ÷ 5000 J) × 100
= 60 %
Thus, the efficiency of the machine is 60%.
Answer:
I. FALSE
II. FALSE
III. TRUE
IV. TRUE
Explanation:
<em>I. A set of sp² orbitals can be thought of as one s orbital one-third of the time and two p orbitals two-thirds of the time.</em> FALSE. 1 s orbital hybridize with 2 p orbitals to form 3 sp² permanent orbitals.
<em>II. A set of sp orbitals can accommodate a maximum of six electrons. </em>FALSE. sp orbitals, as any orbital, can accommodate a maximum of 2 electrons.
<em>III. The orbitals resulting from sp³d² hybridization are directed toward the corners of an octahedron.</em> TRUE. 1 s orbital, 3 p orbitals and 2 d orbitals hybridize to form 6 sp³d² orbitals, which are directed toward the corners of an octahedron.
<em>IV. A set of sp³ orbitals results from the mixing of one s orbital and three p orbitals.</em> TRUE. 1 s orbital hybridize with 3 p orbitals to form 4 sp³ orbitals.
This statement is: False
Boiling is vaporization that occurs both below and at the surface of the liquid.
However, evaporation happens at the surface of the substance.
So, if you need to correct this statement, the correction would be:
Sublimation and evaporation happen at the surface of the substance.
C. Protons
Protons are subatomic particles found in the nucleus and carry positive electrical charge.
Answer:
if it cannot be made to fit the new findings