Which of the following molecules is nonpolar? O A. CO2 O B. NO ос. со O D. SO2

What is a chemical equation for the second ionization for lithium

Orlov [11]

The 2nd ionization energy is removing a 2nd electron from that resulting cation:
Li+ --> Li2+ + 1e-

5 0

2 years ago

372 mL is the volume of Aluminum, density is 2.70 g/mL what is the mass in grams

podryga [215]

Answer:

930 g

Explanation:

D = m/V Multiply both sides by V

m = VD

Data:

V = 372 cm³

D = 2.70 g/cm³

Calculation:

m = 372 × 2.50

m = 930 g

The mass of Al is 930 g.

7 0

3 years ago

3. A PS6 plugged into a 120 V outlet uses 3 Amps. What is the Resistance rating of

blondinia [14]

Answer:

R = 40 ohms

Explanation:

Given that,

The voltage of outlet, V = 120 V

Current flowing through the device, I = 3 A

We need to find the Resistance rating of the power cord. Let the resistance is R. We know that,

Ohm's law, V = IR

Put all the values,

$R=\dfrac{V}{I}\\\\R=\dfrac{120}{3}\\\\R=40\ \Omega$

So, the resistance rating of the power cord is equal to 40 ohms.

8 0

3 years ago

What is a valency according to chemistry

Bond [772]

Answer:

Valency is the measure of the combining power of an element

4 0

2 years ago

If you pump 40.088g of octane (C8H18) into your gas tank, how mant molecules of octane are you pumping

Sonbull [250]

Answer:

2.11 × 10²³ molecules of octane

Explanation:

Given data:

Mass of octane = 40.088 g

Molecules of octane = ?

Solution:

The given problem will solve by using Avogadro number.

It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance.

The number 6.022 × 10²³ is called Avogadro number.

For example,

18 g of water = 1 mole = 6.022 × 10²³ molecules of water

1.008 g of hydrogen = 1 mole = 6.022 × 10²³ atoms of hydrogen

Number of moles of octane:

Number of moles = mass/ molar mass

Number of moles = 40.088 g / 114.23 g/mol

Number of moles = 0.351 mol

Number of molecules:

one mole of octane = 6.022 × 10²³ molecules of octane

0.351 mole of octane = 0.351 × 6.022 × 10²³ molecules of octane

2.11 × 10²³ molecules of octane

6 0

3 years ago

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