Metalloids:alloys of metallods are commonly used in discs like compact discs, CDs ,and DVDs .These materials change from glassy to crystalline with the application of heat which makes them useful as data storage media
Answer:
We identify nucleic acid strand orientation on the basis of important chemical functional groups. These are the <u>phosphate</u> group attached to the 5' carbon atom of the sugar portion of a nucleotide and the <u>hydroxyl</u> group attached to the <u>3'</u> carbon atom
Explanation:
Nucleic acids are polymers formed by a phosphate group, a sugar (ribose in RNA and deoxyribose in DNA) and a nitrogenous base. In the chain, the phosphate groups are linked to the 5'-carbon and 3'-carbon of the ribose (or deoxyribose) and the nitrogenous base is linked to the 2-carbon. Based on this structure, the nucleic acid chain orientation is identified as the 5'-end (the free phosphate group linked to 5'-carbon of the sugar) and the 3'-end (the free hydroxyl group in the sugar in 3' position).
Answer:
a) 
b) NR
c) NR
d) 
e) NR
Explanation:
a) Nickel is more reactive than copper so the first one will displace the other:
b) Due to the higher reactivity the magnesium has compared to the zinc, the first will remain in solution and the second will reamin solid. So, NR.
c) No reaction occurs, gold is resistant to acid in normal conditions due to its characteristic as noble metal.
d) Chromium is more reactive than cobalt so the last one will be displaced:
e) Nothing happens, the reduction potencial of the hydrogen gas bubbled ins't enough to reduce the silver.
Answer:
I think it would be b. The octet rule states that transition metal group elements tend to react so that they attain a noble gas electron configuration.
Answer:
2.813%
Explanation:
First, we must take the average of the five mass measurements
Average value= sum of all five trials/ 5= 26.6 + 26.3 + 26.2 + 26.4 +26.1 /3 = 26.32mg
Now, we have been provided the accurate mass of the compound in the question as 25.6mg
Remember that relative percent error = Average value of measurement - True value of measurement / true value×100
Hence we have;
Percent error=
26.32 - 25.6/25.6 ×100
Percent error= 2.813%
