An element is a substance made up of only one type of atom. It is the simplest form of matter and examples include hydrogen, oxygen, gold, and silver.
A substance that is made up of only one type of atom is an element. Elements are the simplest form of matter that cannot be broken down into simpler substances by ordinary chemical means. Examples of elements include hydrogen, oxygen, gold, and silver, each comprising only one type of atom. On the other hand, compounds, mixtures, and solutions can be comprised of more than one type of atom, molecule, or substance.
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A 35.65 g sample of NaOH contains 0.8910 moles of NaOH.
The mole, denoted by the sign "mol," is the volume of a system that has the same number of atoms in 0.012 kilograms of carbon-12 as there are elementary particles.
The mole, often known as mol, is a SI unit used to measure how many particles are present in a given substance. A mole is made up of 6.02214179 atoms or other fundamental building blocks like molecules.
Mass off NaOH = 39.997
given = 35.65 g of NaOH
No of moles of NaOH =35.65 g of NaOH × 1 mol NaOH /40.01 g
No of moles of NaOH = 0.8910 moles.
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Answer:
0.8910 mols of NaOH in a 35.65 g sample of NaOH
Explanation:
Mass off NaOH = 39.997
given = 35.65 g of NaOH
35.65 g of NaOH * 1 mol NaOH = 0.8910, since there are 4 sig figs.
/40.01 g
Answer: Option (B) is the correct answer.
Explanation:
A solution that has maximum concentration of solute particles and on adding more solute the particles of solute remains undissolved is known as a saturated solution.
Whereas when particles of solute keep on dissolving in a solution then it is known as an unsaturated solution.
Thus, we can conclude that a solute is added to water and a portion of the solute remains undissolved. When equilibrium between the dissolved and undissolved solute is reached, the solution must be saturated.
Answer:
The sun is not yellow.
Explanation:
sun can look yellow or red whenever we see the sunlight at sunrise or sunset, when it becomes low on the horizon. That's only how the wavelengths of the low frequency (green , blue, magenta) are dispersed across the planet's crust, just as the tiny waves are distributed along the sea by huge rocks.
Answer:
Its because of the Earth's atmosphere | The sun is a yellow dwarf star | If you saw the sun from space, it would actually look white
Explanation:
Answer:
Area = force /pressure
Explanation:
Force is a push or pull. It is the product of mass and acceleration. When force is applied on a body of mass m, an acceleration of a is produced.
Pressure is defined as the force per unit area.
Pressure =
Area =
The SI unit of force is Newton (N), pressure is Pascal (Pa) and area is meter square (m²)
The question is asking about the mathematical relationship between mass, volume and density in Physics, which is represented by the formula D = m/V; this formula is essential in various physics computations.
The relationship between the mass (m) of a material, its volume (V), and its density (D) is represented by the formula D = m/V. This is a fundamental concept in Physics, specifically in areas involving fluid mechanics and material science. If you know the mass and volume of a material, you calculate its density using this formula, and decipher a lot about the material's properties from the result of this calculation.
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