How many grams is 1.2 moles of Neon?
Answers
Mass of Neon : = 24.21564 g
Further explanation
Given
1.2 moles of Neon
Required
mass of Neon
Solution
The mole is the number of particles contained in a substance
1 mol = 6.02.10²³
Moles can also be determined from the amount of substance mass and its molar mass
Mol = mass : Molar mass
so mass of Neon(MM=20,1797 g/mol) :
= mol x MM
= 1.2 x 20,1797
= 24.21564 g
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2Al + 6HCl → 2AlCl3 + 3H2 If 3.0 grams of H2 were produced, how many grams of Al reacted? (Molar mass of Al = 27 g/mol, molar mass of H2 = 2.0 g/mol) ___ grams
What would happen if you play a note in a cold day on a flute?
What is the total number of moles of solute in 250 milliliters of a 1.0 M solution of NaCl
b.) Find the density of the rock dropped into the graduated cylinder.
Answers
Answer:
Explanation:
Answer:
Explanation:
A. Volume
The volume was found using water displacement. Subtract the initial volume from the final volume.
The graduated cylinder had 20 milliliters of water (initial volume).
After the rock was added, the graduated cylinder read 30 milliliters (final volume).
Substitute the values in and subtract.
The volume of the rock is 10 milliliters.
B. Density
Density can be found by dividing the mass by the volume.
The mass of the rock is 23 grams. We just found the volume of 10 milliliters.
Substitute the values in and divide.
The density of the rock is 2.3 grams per milliliter.
Answer:
Volume = 10 cm3
Density = 2.3g/cm3
Explanation:
volume:
30ml - 20ml = 10ml = 10cm3
density:
density = mass/volume
23/10
2.3g/cm3
revolution
rotation
universal gravitation
Answers
Answer:
retrograde motion
Explanation:
All the planets have direct motion or progade motion i.e. they move in eastward direction around the Sun. The exceptions are Venus and Uranus which apparently move westwards. This is type of motion is known as retrograde motion. Venus and Uranus move opposite to the other planets motion against the background of stars.
Answer:
retrograde motion
Explanation:
100,000 years
200,000 years
50,000 years
300,000 years
Answers
Answer:
300,000 years
Explanation:
100g=0 years
50g=100,00 years
25g=200,00 years
12.5g=300,000 years
2 - The nucleus of an atom is split apart.
3 - An atom gains an electron from another atom.
Which reaction(s) most likely release the greatest amount of energy?
1
2
1 and 3
2 and 3
Answers
Answer: Option (b) is the correct answer.
Explanation:
When an atom shares electrons with another atom then it results in the formation of covalent bond.
Whereas when an atom transfer electrons from one atom to another then it results in the formation of ionic bond.
When nucleus of an atom splits then it represents nuclear fission reaction and energy is released during this process.
For example,
Therefore, we can conclude that out of the given options, the nucleus of an atom is split apart most likely release the greatest amount of energy.
a. True
b. False
Answers
Answer: True
Explanation: An ionic bond is formed when an element completely transfers its valence electron to another element.
Electronegativity is defined as the property of an element to attract a shared pair of electron towards itself.
The element which donates the electron is known as electropositive element and the element which accepts the electrons is known as electronegative element.
This bond is formed between a electropositive metal and a electronegative non-metal
.
Final answer:
Ionic bonds result from high electronegativity differences. True.
Explanation:
Ionic bonds result from high electronegativity differences. True. An ionic bond is formed when one atom, usually a metal, transfers one or more electrons to another atom, typically a nonmetal, resulting in the formation of ions with opposite charges. Electronegativity is the tendency of an atom to attract a shared pair of electrons in a covalent bond. When there is a high electronegativity difference between two atoms, one atom will strip electrons away from the other, leading to the formation of ionic bonds.
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Answers
The IUPAC name for Fe2O3 is Iron (III) oxide. Rusting is the common name for the corrosion of iron or steel.
Rusting of iron is known as as corrosion and withinside the procedure of corrosion the iron get transformed into iron oxide and that is an instance of chemical change. The chemical formula of rust is Fe2O3. The interplay of Iron with air and water produces rust. The Oxygen exist withinside the air shape a powdered substance known as rust. The rust is a red-orange flaky substance and the phenomenon of the formation of rust is known as rusting. Rusting is an oxidation procedure, and is much more likely to arise at the steel surface.
Therefore, the IUPAC name for Fe2O3 is Iron (III) oxide.
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