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mote1985 [20]
2 years ago
6

The bright-line spectrum of an element in the gaseous phase is produced as

Chemistry
1 answer:
gladu [14]2 years ago
6 0
<span>Electrons move from higher energy states to lower energy states</span>
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What is the number of moles in 432g Ba(NO3)2
777dan777 [17]

First there is a need to calculate the molar mass of Ba(NO₃)₂:

137.3 + 2 (14.0) + 6 (16) = 261.3 grams/mole

The molar mass, denoted by M in chemistry refers to a physical characteristic illustrated as the mass of a given component divided by the amount of the component. The molar masses are always denoted in grams/mole.

After finding the molar mass, the number of moles can be identified as:

432 grams / 261.3 g/mol = 1.65 moles of Ba(NO₃)₂.

3 0
3 years ago
PLS I NEED HELP give me examples of an atom
Ugo [173]

Answer:

Neon (Ne)

Hydrogen (H)

Argon (Ar)

Iron (Fe)

Calcium (Ca)

Deuterium, an isotope of hydrogen that has one proton and one neutron.

Plutonium (Pu)

F-, a fluorine anion.

Explanation:

I got u

4 0
2 years ago
Which of the following are examples of chemical changes? Select all that apply.
Travka [436]

A B and C are all chemical changes. paper tearing is not.

6 0
3 years ago
Pls help with give brainiest Which statement best explains why the sun's
Alexxandr [17]
It’s B pretty sure it is
4 0
2 years ago
What is the rate of acceleration of a 2,000-kilogram truck if a force of 4,200n is used to make it start moving forward?
butalik [34]

Answer:

The answer to your question is:      a = 2.1 m/s²

Explanation:

Data

Acceleration : ?

Mass = 2000 kg

Force = 4200 N

Formula

Newton's second law of motion    F = ma

                                                        a = F / m

Substitution

                                     a = 4200 N / 2000 kg

                                      a = 2.1 m/s²

                                                     

7 0
3 years ago
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