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3 years ago

The maximum number of energy sublevels found in any energy level at ground state is: 4 2 6 3

Chemistry

1 answer:

ki77a [65]3 years ago

5 0

the correct ans is 2....

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Determine the mass in grams of each of the following:

nekit [7.7K]

We know, Given mass = Molar mass * Number of moles.

A.) 1.25 mol CaF₂

Number of moles = 1.25
Molar mass = 78

So, Mass = 78 * 1.25 = 97.5 g

B.) 3.4 mol (NH₄)₂SO₄

Number of moles = 3.4
Molar mass = 132

Mass = 3.4 * 132 = 448.8 g

Hope this helps!

3 0

3 years ago

When the limiting reactant in a chemical reaction is completely used, what happens to the reaction?

Nadya [2.5K]

The reaction stops because one of the inputs has been exhausted.

6 0

3 years ago

Please help me.

kirza4 [7]

Taking into account the definition of density, the density of the sample is 0.5 $\frac{g}{mL}$ .

It is necessary yo know that density is defined as the property that matter, whether solid, liquid or gas, has to compress into a given space.

In other words, density allows you to measure the amount of mass in a certain volume of a substance.

Then, the expression for the calculation of density is the quotient between the mass of a body and the volume it occupies:

$density=\frac{mass}{volume}$

In this case, you know:

mass= 6 g
volume= 12 mL

Then, replacing in the definition of density:

$density=\frac{6 g}{12 mL}$

Solving:

density= 0.5 $\frac{g}{mL}$

Finally, the density of the sample is 0.5 $\frac{g}{mL}$ .

Learn more about density:

7 0

3 years ago

Balance each of these equations.

Oksanka [162]

Answer:

A. 2NO + O2 -> 2NO2

B. 4Co + 3O2 -> 2Co2O3

C. 2Al + 3Cl2 -> Al2Cl6

D. 2C2H6 + 7O2 -> 4CO2 + 6H2O

E. TiCl4 + 4Na -> Ti + 4NaCl

8 0

2 years ago

A mole is __ - objects. Answer here

ddd [48]

Answer:

A mole is __a substance is defined as: The mass of substance containing the same number of fundamental units as there are atoms in exactly 12.000 g of 12C. Fundamental units may be atoms, molecules, or formula units, depending on the substance concerned.

Explanation:

7 0

3 years ago