Exams & Certification

convert the decimal or whole number to a percent 0.36 1/2 The Correct Answer and Explanation is: To convert 0.36 and 1/2 to percentages, follow these steps: Correct Answers: Explanation: A percentage is a way of expressing a number as a part of 100. The word “percent” literally means “per hundred.” To convert a decimal […]

18 out of 20 is what percentage The Correct Answer and Explanation is: To calculate what percentage 18 out of 20 represents, use the percentage formula:Percentage=(PartWhole)×100\text{Percentage} = \left( \frac{\text{Part}}{\text{Whole}} \right) \times 100Percentage=(WholePart​)×100 In this case:Percentage=(1820)×100=0.9×100=90%\text{Percentage} = \left( \frac{18}{20} \right) \times 100 = 0.9 \times 100 = 90\%Percentage=(2018​)×100=0.9×100=90% So, 18 out of 20 is 90 percent.

Find the HCF by prime factorization. 165 and 275 . The Correct Answer and Explanation is: To find the Highest Common Factor (HCF) of 165 and 275 using prime factorization, begin by breaking each number into its prime factors: Step 1: Prime factorization of 165 165 ÷ 5 = 3333 ÷ 3 = 1111 is

Uses of transgenic organisms Explore examples of transgenic organisms and how they are used in society today by placing the correct word in each senten Labels may be used more than once bloremediation Organisms that are contaln Ioreign genes that allow them express proteins Iney normal wouid not create. planis pest-rosistant For example. transgonlc used

In which sublevels the valence electrons are located for the following atoms? Sr: Te: 2) What is the number f unpaired electrons found in the following atoms? Ni: Ca: 3) Label the following atoms as paramagnetic or diamagnetic; a) NI b) Se c) C The Correct Answer and Explanation is: Correct Answers: 1) Sublevels of

How many valence electrons are in a neutral atom of tellurium? The Correct Answer and Explanation is: A neutral atom of tellurium (Te) has 6 valence electrons. Explanation: Tellurium is a chemical element with the atomic number 52. This means it has 52 electrons in a neutral state, because the number of electrons equals the

How many valence electrons are in TeO3? The Correct Answer and Explanation is: To find the number of valence electrons in TeO₃ (tellurium trioxide), count the valence electrons contributed by each atom: Now, add the valence electrons from tellurium and oxygen:6 (from Te)+18 (from 3 O)=24 valence electrons6 \text{ (from Te)} + 18 \text{ (from 3 O)} = 24 \text{ valence electrons}6 (from Te)+18 (from 3 O)=24 valence electrons

What is 1 12/20 as a percentage The Correct Answer and Explanation is: To convert 1 12/20 into a percentage, follow these steps: Step 1: Convert the mixed number to an improper fraction 1 12/20 means:1+1220=2020+1220=32201 + \frac{12}{20} = \frac{20}{20} + \frac{12}{20} = \frac{32}{20}1+2012​=2020​+2012​=2032​ Step 2: Convert the fraction to a decimal 3220=1.6\frac{32}{20} = 1.62032​=1.6

 Convert 11000(2) into a decimal number. (ii) Convert 25.125(10) into a binary number. (iii) Convert 4B.3(16) into a binary number. (b) Express -52 in to an 8-bit (i) signed magnitude form and (ii) 2’s complement form. The Correct Answer and Explanation is: Correct Answers: (a) Conversions (i) Convert 11000211000_2110002​ to decimal:110002=1×24+1×23+0×22+0×21+0×20=16+8+0+0+0=241011000_2 = 1×2^4 + 1×2^3 + 0×2^2 + 0×2^1 + 0×2^0

Write out the complete electron configuration for Cu, Cuand Cuaccording to the normal pattern of filling electrons. (3 points) (b) Rewrite the electron configurations for Cu and Cupromoting one electron to get a more stable configuration. (2 points) 7. Element Q, in the fourth period, has the following ionization energies:=590 kJ,=1145 kJ,=4912 kJ,=6491 kJ,=8140 kJ,=10,500.