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shusha [124]
2 years ago
8

Are pure substances homogeneous or heterogeneous

Chemistry
1 answer:
Svetllana [295]2 years ago
6 0

The answer is homogenous i think

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What is the molarity of a stock solution made from 40 grams of LiOH in 16050mL of water
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Answer: heck the chemistry app itll help you i dont know this answer but the app will tell u!

6 0
3 years ago
A reaction that occurs in the internal combustion engine is N₂(g) + O₂(g) ⇄ 2NO(g) (c) What is the significance of the different
vodomira [7]

The response would become spontaneous if the value of  ΔG° was negative.

According to the estimated value of  ΔG°, it is shown that  ΔG° value decreases as temperature value increases. The value shifts from being more favorable to being less favorable. It would appear that the value of  ΔG° would be negative at a specific temperature, causing the reaction to occur spontaneously.

The reaction is in an equilibrium state if  ΔG = 0. If ΔG < 0, the reaction is spontaneous in the direction written. The relationship between terms from the equilibrium is paralleled by the relevance of the sign of a change in the Gibbs free energy.

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8 0
1 year ago
In a 100 g sample of iron(III) oxide, how many grams of iron are present?
e-lub [12.9K]
The formula of Iron(III) oxide is Fe2O3
In order to calculate the mass of iron in a given sample of iron(III) oxide, we must first know the mass percentage of iron in iron(III) oxide. This is calculated by:
[mass of iron in one mole of iron(III) oxide/ mass of one mole of iron(III) oxide] * 100 
= [(moles of iron * Mr of iron) / (moles of Iron * Mr of Iron + moles of Oxygen * Mr of Oxygen)] * 100
= [(2 * 56) / (2 * 56 + 3 * 16)] * 100
= (112 / 160) * 100
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Thus, in a 100g sample, the weight of iron will be:
100 * 70%
= 70 grams
8 0
3 years ago
What is the relationship between an objects mass and potential energy
Andrei [34K]

Answer:

The formula for potential energy depends on the force acting on the two objects. For the gravitational force the formula is P.E. = mgh, where m is the mass in kilograms, g is the acceleration due to gravity (9.8 m / s2 at the surface of the earth) and h is the height in meters.

Explanation:

5 0
3 years ago
Josh prepares a solution by mixing sodium nitrate and water. To calculate the molarity of the solution, Josh should calculate th
Sauron [17]
Of the sodium nitrate as molarity of a solution is expressed as the number of moles of a given substance per 1000cm3 or 1dm3 of water 
hope that helps
3 0
3 years ago
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