The compound FeCl3 is made of

Rocks are classified as igneous, sedimentary, or metamorphic based primarily on

irinina [24]

Answer:

Method of formation

Explanation:

7 0

3 years ago

We can see because light is

ryzh [129]

Light is energy that travels in a ray which is a narrow beam of light. We can see things because light bounces off things and goes into our eyes. You can also see things that give off their own light.

Light comes from many different sources which is the place where something begins or comes from. The largest light source is the sun and without it, Earth would be cold and dark. Stars make light too. So do things like lightbulbs, candles, computers, and TVs.

8 0

4 years ago

How many moles are in 3.0x10 to the 22 power atoms of magnesium

Mrac [35]

<h3>Answer:</h3>

0.0498 moles

<h3>Explanation:</h3>

We are given;

Number of atoms of Magnesium 3.0 × 10^22 atoms

We are required to calculate the number of moles of Magnesium;

We need to know that 1 mole of an element contains 6.022 × 10^23 atoms.
Thus; 1 mole of Mg = 6.022 × 10^23 atoms
Therefore, to get the number of moles of Mg we divide the number of atoms given by the number of atoms in 1 mole.

Moles = 3.0 × 10^22 atoms ÷ 6.022 × 10^23 atoms/mol

= 0.0498 moles

Hence, the number of moles in 3.0 × 10^22 atoms is 0.0498 moles

3 0

4 years ago

What effect does increasing the concentration of a dissolved solute have on each of the colligative properties?

Igoryamba

Answer:

If we increase the concentration of a dissolved solute, the solution would have a vapor pressure so much low, the boiling temperature for the solution will be so high, freezing point for the solution will be so much low and the osmotic pressure will be higher.

Colligative properties always depends on dissolved particles (solute)

Explanation:

These are the colligative properties

- Vapor pressure lowering

ΔP = P° . Xm

Vapor pressure of pure solvent - Vapor pressure of solution.

If we add more solute, it would raise the Xm, so the solution would have a vapor pressure so much low.

Vapor pressure pure solvent - Vapor pressure solution ↑ = P° . Xm ↑

- Boiling point elevation

ΔT = Kb . m

When we add more solute, we are increasing the molality.

↑T° boiling of solution - T° boiling pure solvent = Kf . m ↑

Boiling temperature for the solution will be so high.

- Freezing point depression

When we add more solute, we are increasing the molality.

ΔT = Kf . m

T° fussion of pure solvent - ↓T° fussion of solution = Kf . m↑

Freezing point for the solution will be so much low.

- Osmotic pressure

π = M . R . T

When we add solute, molarity is increasing. Therefore the osmotic pressure will be higher.

π↑ = M↑ . R . T

7 0

4 years ago

Gaseous ammonia chemically reacts with oxygen o2 gas to produce nitrogen monoxide gas and water vapor. Calculate the moles of ni

Sergio [31]

Answer: 0.050 moles of nitrogen monoxide are produced by 0.050 moles of ammonia.

Explanation:

According to the law of conservation of mass, mass can neither be created nor be destroyed. Thus the mass of products has to be equal to the mass of reactants. The number of atoms of each element has to be same on reactant and product side. Thus chemical equations are balanced.

The balanced chemical reaction is:

$4NH_3(g)+5O_2(g)\rightarrow 4NO(g)+5H_2O(g)$

According to stoichiometry:

4 moles of ammonia produce = 4 moles of nitrogen monoxide

Thus 0.050 moles of ammonia produce = $\frac{4}{4}\times 0.050=0.050$ moles of nitrogen monoxide

7 0

3 years ago