For each element, a square on the standard periodic table will contain:
The Atomic Number (the integer at the top, which represents the number of protons in the atoms of that element)
The Chemical Symbol of the element (the one or two letter symbol, such as C for Carbon, Mg for magnesium)
The Atomic Mass of the element (the average mass of all naturally occurring isotopes of that element. It's often a decimal number because it's an average, even though it represents the number of protons and neutrons in the atom)Usually, the element's common name is listed, but not all charts do this.
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Answer:
3.02× 10²⁴ atoms
Explanation:
Given data:
Number of nitrogen atoms = ?
Number of moles of N₂O = 2.51 mol
Solution:
1 mole contain 2 mole of nitrogen atoms.
2.51 × 2 = 5.02 mol
According to Avogadro number,
1 mole = 6.022 × 10²³ atoms
5.02 mol × 6.022 × 10²³ atoms / 1 mol
30.2 × 10²³ atoms
3.02× 10²⁴ atoms
Answer:
1. Vegetable oil, which is a liquid at room temperature, is used in making cake batter. <u>Unsaturated</u>
2. Chocolate, which is solid at room temperature, is derived from a seed. <u>Saturated</u>
3. Butter<u>,</u> which is a solid at room temperature, is often used in cooking. <u>Saturated</u>
4. The oil inside flaxseed oil pills is liquid at room temperature. <u>Unsaturated</u>
Explanation:
Saturated fats are those kinds of fat that do not have a double bond between their carbon atoms when represented structurally. At room temperature, they tend to assume the solid-state, and they are mostly obtained from animal sources. Unsaturated fats do have a minimum of one double bond between their carbon atoms and tend to assume the liquid phase. They are mostly obtained from plant sources.<em> </em>
1. Vegetable oil is obtained from a plant source and is, therefore, unsaturated fat.
2. Chocolate even though it comes from cocoa is solid at room temperature and is mostly comprised of saturated fat.
3. Butter a solid at room temperature is mostly made up of saturated fat and is sourced from animals.
4. Flaxseed oil obtained from a plant source is mostly unsaturated fat.
At constant pressure a known moles of gas has volume which is directly proportional to temperature (Charle's Law)
Thus V α T
Therefore
V1/V2 = T1 /T2
V1 = initial volume = 10 L
T1 = initial temperature= 280 K
V2 = final volume = 20L
T2 = final temperature = ?
T2 = T1V2 / V1 = 280 X 20 / 10 = 560 K
Thus the new temperature will also doubles up as volume is increased by two times