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3 years ago

The standard temperature and pressure of gases are OK and 1 atm, respectively. (T/F)

Chemistry

1 answer:

babymother [125]3 years ago

8 0

Answer:

Explanation:

0 degrees kelvin is mighty cold. It should be 0 degrees Celsius.

The answer is false.

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Calculate how many grams of the product form when 16.7 g of oxygen gas completely reacts with solid chromium. Assume that there

34kurt

Answer: The mass of product formed is 79.344 g.

Explanation:

To calculate the number of moles, we use the equation:

$\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}$ .....(1)

Given mass of oxygen = 16.7 g

Molar mass of oxygen = 32 g/mol

Putting values in equation 1, we get:

$\text{Moles of oxygen}=\frac{16.7g}{32g/mol}=0.522mol$

The chemical reaction for the formation of chromium oxide follows the equation:

$4Cr+3O_2\rightarrow 3Cr_2O_3$

By Stoichiometry of the reaction:

3 moles of oxygen produces 3 moles of chromium oxide.

So, 0.522 moles of oxygen will produce = $\frac{3}{3}\times 0.522=0.522mol$ of chromium oxide.

Now, calculating the mass of chromium oxide from equation 1, we get:

Molar mass of chromium oxide = 152 g/mol

Moles of chromium oxide = 0.522 moles

Putting values in equation 1, we get:

$0.522mol=\frac{\text{Mass of chromium oxide}}{152g/mol}\\\\\text{Mass of chromium oxide}=79.344g$

Hence, the mass of chromium oxide produced in the given reaction is 79.344 grams.

3 0

2 years ago

Is oxygen a transional element?

Ede4ka [16]

Transitional elements are usually described as elements of the d block. oxygen is not in the d block, and hence is not a transitional element.

6 0

3 years ago

Fill in each blank with an integer. In order to produce sp2 hybrid orbitals, ___ s atomic orbital(s), ___ p atomic orbital(s), a

Y_Kistochka [10]

Answer:

1, 2, 0, 1

Explanation:

The bonds between atoms can be explained in terms of hybrid orbitals. The kind of hybrid orbital depends on the kind and number of atomic orbitals that hybridize.

In order to produce sp² hybrid orbitals, 1 s atomic orbital, 2 p atomic orbitals, and 0 d atomic orbitals must be mixed/hybridized.

There are 3 p orbitals in each p sublevel.

After the hybridization, there is 1 unhybridized p orbital around the central atom.

6 0

3 years ago

How many moles of O2 are needed to react with 8.95 moles of Al?

Gelneren [198K]

Answer:

6.71 moles of O₂

Explanation:

When the reactans are oxygen and aluminum, you produce aluminum oxide by this reaction:

4 Al + 3O₂ → 2Al₂O₃

The stoichiometry indicates that 4 moles of Al reacts with 3 moles of O₂.

Let's make a rule of three:

If 4 moles of Al reacts with 3 moles of O₂

Then, 8.95 moles of Al will react with (8.95 . 3) / 4 = 6.71 moles

3 0

2 years ago

Read 2 more answers

1. Explain what trans fats are and provide chemical structures.

Gelneren [198K]

Answer:

Trans fats chemical structures:-

8 0

2 years ago