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What are steps to solving stoichiomerty problems?

Arada [10]

<span>Balance the equation.
Convert units of a given substance to moles.
Using the mole ratio, calculate the moles of substance yielded by the reaction.
<span>Convert moles of wanted substance to desired units.</span></span>

5 0

3 years ago

An atom of a fictional element has the energy level diagram shown below. Which line will not appear on the total emission spectr

andreev551 [17]

Your answer is D have a great day

5 0

4 years ago

In part A, when you added water to the sodium acetate in the flask, some of the chemical dissolved into the water. Would you cal

viktelen [127]

Answer: The solution is a SATURATED solution.

Explanation:

Although most substances are soluble in water, some are more soluble than others,that is , their solubilities differ. SOLUBILITY is a means of comparing the extent to which different solutes can dissolve in a particular solvent at a definite temperature.

From the question above, when water was added to the sodium acetate in the flask, SOME of the chemical dissolved into the water, meaning that some remained undissolved. This is because a given volume of water can only dissolve a certain amount of chemical in it at room temperature. If more chemical is added to such a solution, the chemical will remain undissolved. Such a chemical solution is said to be a SATURATED SOLUTION.

A saturated solution of a solute at a particular temperature is on which contains as much solute as it can dissolve at that temperature in the presence of undissolved solute particles.

Unsaturated solution is a type of solution that dissolves all its solutes with no presence of undissolved solute.

Supersaturated solution is one which contains more of the solute than it can normally hold at that temperature. It is an unstable solution which crystallizes out when disturbed.

4 0

3 years ago

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If the pressure of a gas is 2.42 arm what is it’s pressure in kPa ? 0.00318 Pa 0.0239 kPa 245 kPa 1840 kPa

VMariaS [17]

Answer:- 245 kPa.

Solution:- The pressure is given as 2.42 atm and we are asked to convert it to kPa. kPa stands for kilopascal.

1 atm = 101.325 kPa

We could use this conversion factor to convert given atm pressure to kPa as:

$2.42atm(\frac{101.325kPa}{1atm})$

= 245 kPa

So, 2.42 atm pressure in kPa is 245.

8 0

4 years ago

Given the reaction, UO (g) 4 HF (g)UF (g 2 H,O (g), predict the effect each of the following will have on the equilibrium of the

vitfil [10]

Answer:

a. Shift towards product side

b. Shift towards reactant side

c. Shift towards product side

Explanation:

$UO_2 (g) +4 HF\rightleftharpoons (g)UF_4+ (g) 2 H_2O (g)$

Any change in the equilibrium is studied on the basis of Le-Chatelier's principle.

This principle states that if there is any change in the variables of the reaction, the equilibrium will shift in the direction to minimize the effect.

Adding reactant at the equilibrium, will shift the equilibrium reaction in forward direction that is in right direction.
Adding product at the equilibrium, will shift the equilibrium reaction in backward direction that is in left direction.

a.Uranium dioxide is added.

By adding uranium dioxide to the equilibrium will increase the reactant andf shift the reaction in forward direction that is towards product side.

b. Hydrogen fluoride reacts with the walls of the reaction vessel.

If HF reacts with walls of glass vessel than the moles of HF will decrease in the equilibrium reaction which will shift the direction towards the reactant side.

c. Water vapor is removed.

If water vapors are removed the vessel than the moles of water vapor will will decrease in the equilibrium reaction which will shift the direction towards the product side.

6 0

3 years ago