Answer: C
Explanation:
This is basic stoichiometry
4.5 X 10^20 Atoms x (1 mole/ 6.02 X 10^23 atoms) = 7.48 X 10^-4 moles Ag
so the answer would be C.
B. less than 0.5 grams of sugar per serving.
C. less than 5 milligrams of sugar per serving.
D. less than 2 milligrams of sugar per serving.
Answer:
A food product claiming to be sugar free contains less than 10 grams of sugar per serving.
Explanation:
There are several sugars, such as lactose (milk), fructose (fruits and honey), maltose (beer), sucrose (table sugar), among others. These can be classified into intrinsic sugar, that is the sugar that is part of the composition of foods such as milk (lactose), vegetables or fruits (fructose) and free sugars, which are those added by manufacturers, consumers or cooks. This last classification includes sugars naturally present in honey, syrups, fruit juices and fruit juice concentrates.
The main difference between them is that eating a large amount of food containing free or added sugar causes a metabolic reaction that increases the risk of being overweight or obese, and of developing diabetes, gout, ulcerative colitis, vascular diseases and caries. However, the consumption of intrinsic sugars does not pose a health risk. Therefore, the recommendation of the World Health Organization is that the daily consumption of free sugars should be reduced to less than 10% of the total caloric intake, that is, to a maximum of 25g of free sugars per day.
Elements on the periodic table are arranged into groups and periods, and are ordered according to atomic number, not the number of proteins or based solely on reactivity. Each element's place is determined by the number of protons in its nucleus, which also typically equals the number of electrons. Elements in the same group, or column, share similar chemical properties.
The elements on the periodic table are indeed arranged into groups and periods, but they are ordered in line with their atomic number. This atomic number reflects the number of protons in an element's nucleus and also typically matches the number of electrons surrounding the nucleus. Elements in the same vertical column, known as a group, share similar chemical properties.
Each box on the periodic table represents an element, and contains its atomic number, symbol, average atomic mass and (sometimes) name. The elements are arranged in seven horizontal rows, known as periods or series, and 18 vertical columns, called groups. The properties of the elements are periodic functions of their atomic numbers, hence the arrangements.
The reactivity of elements does have a role to play in the periodic table, as element groups possess similar chemical behaviors due to the similar configurations of their outermost electron shell. However, this reactivity does not determine the ordering of elements on the periodic table as the atomic number does. The numbering of proteins error seems to be a typographical mistake as proteins aren't a determinant in the configuration of the periodic table.
#SPJ1
Explanation:
Conductors and insulators are two types of materials that differ in their ability to conduct electrical current. Here are the key differences between conductors and insulators:
**Conductors:**
1. **Electrical Conductivity:** Conductors are materials that have high electrical conductivity. This means they allow the easy flow of electric charge, typically in the form of electrons. Metals like copper, aluminum, and silver are excellent electrical conductors.
2. **Free Electrons:** Conductors have a large number of free electrons that are loosely bound to their atomic structure. These free electrons can move easily when a voltage is applied, creating an electric current.
3. **Low Resistance:** Conductors have low electrical resistance, which means they offer little opposition to the flow of electric current.
4. **Used for Wiring:** Conductors are commonly used in electrical wiring and circuits to transmit electricity efficiently.
**Insulators:**
1. **Electrical Insulation:** Insulators are materials that have low electrical conductivity. They do not allow the easy flow of electric charge. Examples of insulators include rubber, glass, plastic, and wood.
2. **Tightly Bound Electrons:** Insulators have tightly bound electrons in their atomic structure. These electrons are not free to move, so they do not contribute to the flow of electric current.
3. **High Resistance:** Insulators have high electrical resistance, which means they strongly resist the flow of electric current.
4. **Used for Insulation:** Insulators are used to isolate and protect conductors in electrical systems. They are employed as insulating materials in wires, cables, and electrical devices to prevent electrical leakage and ensure safety.
In summary, conductors allow electric current to flow easily due to the presence of free electrons and low resistance, while insulators inhibit the flow of electric current because their tightly bound electrons and high resistance prevent the movement of charge. These differences make conductors suitable for carrying electricity, while insulators are used to insulate and protect conductive materials in electrical systems.
The element that is most likely to form covalent bonds with carbon (C) is
Selenium (Se)
Explanation
Covalent bond is formed when there is sharing of electrons among two or more non metals.
Both carbon and selenium are non metals therefore they react to form a covalent bond by sharing electron.
Despite krypton been a non metal it does not form a covalent bond with carbon since krypton is inert ( non reactive).
Beryllium (Be) and sodium (Na) are metals therefore they form ionic bond with carbon instead of covalent bond.
Answer: Option (c) is the correct answer.
Explanation:
Atomic number of carbon is 6 and its electronic configuration is 2, 4. So, in order to complete its octet, it requires 4 more electrons.
Therefore, carbon form covalent bonds, that is, it shares electrons with and electron deficient atom.
Krypton is a noble gas and has completely filled octet. So, it will neither give to share its electrons with carbon atom.
Whereas beryllium and sodium does not have enough valence electrons to share. Hence, they will not form bond with carbon atom.
On the other hand, selenium being a non-metal is electron deficient and therefore, in order to complete its octet it will share its electrons with carbon atom.
Thus, we can conclude that the element carbon (C) is most likely to form covalent bonds with the element selenium (Se).
Answer choices are:
A.) Metalloids are amphoteric.
B.) Metalloids are semiconductors.
C.) Metalloids are brittle.
D.) Metalloids are shiny.
____________________________________________________________
Correct answer choice is:
B.) Metalloids are semiconductors.
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Explanation:
The form, design, and implementation of CPUs have replaced over the track of their past, but their primary process continues almost constant. Principal parts of a CPU involve the arithmetic logic unit (ALU) that executes arithmetic and logic operations, processor registers that provide operands to the ALU and save the results of ALU operations and a control unit that organizes the fetching and performance of directions by directing the coordinated operations of the ALU, registers and other elements.
Answer:
metalloids and semiconductors is your answer :)
Explanation:
took the test!