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3 years ago

Which of the following is a reasonable ground-state electron configuration? (3 points)

Chemistry

1 answer:

MrMuchimi3 years ago

6 0

Answer:

1s22s22p63s23p64s23d5 1 s 2 2 s 2 2 p 6 3 s 2 3 p 6 4 s 2 3 d 5 is the only reasonable ground-state electron configuration and refers to the element manganese.

Explanation:

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Anna11 [10]

Answer:

7 = 2.3× 10⁺⁹ mm

8 = The density of copper is 6.55g/cm³ so the given metal is not copper.

9 = mass of liquid is 7.8 g

10 = mass of liquid is 8050 g.

Explanation:

7. How many mm are there in 2.3Mm?

mm is the symbol of millimeter.

Mm is the symbol of megameter.

1 mm = 10⁻⁹Mm

so in order to convert 2.3Mm into mm we will multiply the given value with 10⁺⁹

2.3 mm × 10⁺⁹ = 2.3× 10⁺⁹ mm

8. Copper has a density of 6.55g/cmº. A. piece of metal has a mass of 48.3g and a volume of 7.2cm.

Is this metal copper?

Given data:

Density of copper = 6.55 g/cm³

Mass of metal = 48.3 g

Volume of metal = 7.2 cm³

Is the metal is copper = ?

Solution:

The given problem will be solved through the density formula.

D = m/v

We will put the values in formula to calculate the density.

d = 48.3 g/ 7.2 cm³

d = 6.71 g/cm³

The density of copper is 6.55g/cm³ so the given metal is not copper.

9. What is the mass of a liquid whose volume is 6.0 mL and a density of 1.3 g/cm??

Given data:

Volume of liquid = 6.0 mL (1 mL = 1cm³)

Density of liquid = 1.3 g/cm³

Mass of liquid = ?

Solution:

Formula:

D = m/v

By putting the values in formula.

1.3 g/cm³ = m / 6 cm³

m = 1.3 g/cm³ × 6 cm³

m = 7.8 g

mass of liquid is 7.8 g.

10. You have 3.50 L of a liquid, whose density is 2.3g/cm3. What is it's Mass?

Given data:

Volume of liquid = 3.50L (3.50 ×1000 = 3500 cm³)

Density of liquid = 2.3g/cm³

Mass of liquid = ?

Solution:

Formula:

D = m/v

By putting the values in formula.

2.3g/cm³ = m /3500cm³

m = 2.3 g/cm³ × 3500 cm³

m = 8050 g

mass of liquid is 8050g.

7 0

3 years ago

Which is the following is true about the properties of the mantle?

nadya68 [22]

Answer:

it's the 2 I'm pretty sure

3 0

3 years ago

A chef leaves a copper spoon, a wooden spoon, and a steel spoon in a pot of boiling soup for several minutes. Which spoon should

n200080 [17]

Answer:

The wooden spoon.

Explanation:

The wooden spoon won't be as hot as a metal spoon its logic and a correct answer.

4 0

3 years ago

Read 2 more answers

A reaction occurs in a calorimeter, resulting in the starting and final temperatures shown below. What can you say about the rea

Pavlova-9 [17]

Answer:

The reaction is exothermic and ΔH is negative

Explanation:

An exothermic reaction is a chemical reaction that releases energy in the form of heat. It is the opposite of an endothermic reaction in which energy is absorbed. It is expressed in a general thermochemical equation: reactants → products + energy.

We can know that a reaction is exothermic by observing the calorimeter to know if there is an increase in temperature. Remember that an exothermic reaction leads to evolution of heat. This is observed physically as a rise in temperature.

The calorimeter initially read 21.0 and finally read 38.8 at the end of the reaction. This implies that heat was given out in the process. The reaction is exothermic and ∆H is negative.

8 0

4 years ago

Carbon-12 and Carbon-14 are considered __________ of each other.

BabaBlast [244]

neutrons to the carbon-12 and carbon-14

4 0

3 years ago