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Darina [25.2K]
3 years ago
7

What is the first step in a mass- mole or mass to mass problem?

Chemistry
1 answer:
Sedaia [141]3 years ago
4 0
Mass to mass: moles A x(mole ratio of B/A) and mass to mole: extract the data from the question
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Propane (C₃H₈) burns in oxygen to produce carbon dioxide and water. What is the correct form of the chemical equation that descr
V125BC [204]

Answer:

The answer to your question is below

Explanation:

Propane is a hydrocarbon that has only single bonds in its structure so it is an alkane.

Propane formula = C₃H₈

Oxygen formula = O₂

Carbon dioxide formula = CO₂

Water formula = H₂O

<u>Reaction:</u>

                         C₃H₈  +   5O₂   ⇒    3CO₂   +   4H₂O

                  Reactants            Elements     Products

                          3                          C                    3

                          8                          H                    8

                         10                         O                   10

6 0
3 years ago
Be sure to answer all parts. The balanced equation for the reaction of aluminum metal and chlorine gas is 2Al(s) + 3Cl2(g) → 2Al
Arada [10]

Answer: a) Cl_2 is the limiting reagent

b)  0.27 g of AlCl_3 will be produced.

Explanation:

To calculate the moles :

\text{Moles of solute}=\frac{\text{given mass}}{\text{Molar Mass}}    

\text{Moles of} Al=\frac{0.80g}{27g/mol}=0.030moles

\text{Moles of} Cl_2=\frac{0.23g}{71g/mol}=0.003moles

2Al(s)+3Cl_2(g)\rightarrow 2AlCl_3(s)

According to stoichiometry :

3 moles of Cl_2 require = 2 moles of Al

Thus 0.003 moles of Cl_2 will require=\frac{2}{3}\times 0.003=0.002moles  of Al

Thus Cl_2 is the limiting reagent as it limits the formation of product and Al is the excess reagent.

b) As 3 moles of Cl_2 give = 2 moles of AlCl_3

Thus 0.003 moles of Cl_2 give =\frac{2}{3}\times 0.003=0.002moles  of AlCl_3

Mass of AlCl_3=moles\times {\text {Molar mass}}=0.002moles\times 133g/mol=0.27g

Thus 0.27 g of AlCl_3 will be produced.

8 0
4 years ago
Which type of nuclear radiation is being emitted here?
tekilochka [14]

Answer:

b.Beta

Explanation:

mass number remains constant while atomic number has been increased by 1 unit . beta is electron like element where its mass number is 0 and atomic number is -1.

7 0
3 years ago
How many valence electrons does this atom have? (Urgent)
serg [7]

Answer:

For example, atoms in Groups 1 and 2 have 1 and 2 valence electrons, respectively. Atoms in Groups 13 and 18 have 3 and 8 valence electrons, respectively. Valence electrons are responsible for the reactivity of an element. They determine how "willing" the elements are to bond with each other to form new compounds.

Explanation: it might be 18 my guess:)

4 0
3 years ago
how many moles of water (H2O) would be produced from the reaction of 3.25 moles of hydrochloric acid (HCL) reacting with excess
lbvjy [14]

Answer:

3.25 moles of H2O

Explanation:

We'll begin by writing the balanced equation for the reaction. This is given below:

2HCl + Ca(OH)2 —> CaCl2 +2H2O

Now, we can obtain the number of mole H2O produced from the reaction as follow:

From the balanced equation above,

2 moles of HCl reacted to produce 2 moles of H2O.

Therefore, 3.25 moles of HCl will also react to produce 3.25 moles of H2O.

Therefore, 3.25 moles of H2O were produced from the reaction.

8 0
4 years ago
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