1. The atomic number is equal to the number of protons in the nucleus, and the mass number is equal to the number of protons and neutros in the nucleus.
Therefore, to find the number of neutrons we must do mass number - atomic number, which equals 54.
Answer 1: a. 54
2. Atoms of a same element that have a different number of neutrons in the nucleus are called isotopes of an element.
Answer 2: d. Isotopes
3. Potassium has an electron configuration of , meaning that the first 3 shells are full, and that the last shell (4th one) has only 1 electron.
Answer 3: c. Shells 1, 2 and 3 are full and shell 4 has one electron.
4. An atomic bond isn't a specific bond, it's just a term. Polar covalent and non-polar covalent bonds are strong bonds, which leaves us with the hydrogen bonds, which are indeed the weakest bonds out there.
Answer 4: a. Hydrogen bond
Hope it helped,
BiologiaMagister
Answer:
Explanation:
a) .0003050 significant figure - 4
b) 432.00 significant figure-5
c) .0000008001 significant figure -4
d) 200608.0 significant figure -7
e) .00001503 significant figure-4
f) 60751.0 significant figure- 6.
zero after decimal are all significant . zero before decimal is significant only when it is preceded by a digit.All digits are significant.
The name of the disaccharide above is sucrose
<h3>What are disaccharides?</h3>
Disaccharides are substances which are composed of two molecules of simple sugars or monosaccharides linked to each other.
Below are some examples of disaccharides:
- Sucrose
- Maltose
- Lactose
- Cellobiose
So therefore, the name of the disaccharide above is sucrose
Learn more about disaccharides:
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Atoms are the smallest bits of ordinary matter and are made from particles called protons, neutrons and electrons while a An element is a substance that is made entirely from one type of atom
Answer:
stratosphere - The stratosphere is a layer of Earth's atmosphere. It is the second layer of the atmosphere as you go upward.
mesosphere - The mesosphere is a layer of Earth's atmosphere. The mesosphere is directly above the stratosphere and below the thermosphere
thermosphere - The thermosphere is a layer of Earth's atmosphere. The thermosphere is directly above the mesosphere and below the exosphere.