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kobusy [5.1K]
4 years ago
6

SCIENCE PLS HELP WILL GIVE 26 PONITSIn part B, you will be doing some research on deforestation.

Chemistry
1 answer:
trasher [3.6K]4 years ago
6 0
In africa wood is used as one, cooking and heating sources, and two, firewood is used as a power and energy resource. now summarize these points for credit.

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A sample of excited atoms lie 3.314×10−19 J above the ground state. Determine the emission wavelength of these atoms.
BabaBlast [244]

The emission wavelength of the atoms excited above the ground state is 599.8 nm.

<h3>Emission wavelength of the atoms</h3>

The emission wavelength of the atom is determined by using the following formulas as shown below;

E = hf

E = hc/λ

where;

  • E is the energy of the atom
  • h is Planck's constant
  • c is speed of light
  • λ is the emission wavelength

λ = hc/E

λ = (6.626 x 10⁻³⁴ x 3 x 10⁸) / (3.314 x 10⁻¹⁹)

λ = 5.998 x 10⁻⁷ m

λ = 599.8 x 10⁻⁹ m

λ = 599.8 nm

Thus, the emission wavelength of the atoms is 599.8 nm.

Learn more about wavelength here: brainly.com/question/10728818

8 0
2 years ago
Identify the oxidizing agent and the reducing agent for mg(s)+fe2+(aq)→mg2+(aq)+fe(s). express your answers as chemical formulas
lara31 [8.8K]
Fe^2+ makes Mg go from 0 to 2+, Fe^2+ is the oxidizing, Mg makes Fe^2+ go from 2+ to 0, Mg is the reducing. 

Fe^2+ is a chemical symbol for ferrous in chemistry. Ferrous refers to iron with oxidation number of +2, denoted iron(II) or Fe2+.
Mg is a chemical symbol for Magnesium in chemistry.
6 0
3 years ago
Read 2 more answers
Choose the answer below that gives the correct chemical symbol and classification (metal, metalloid, or nonmetal) for the elemen
Zielflug [23.3K]

Answer: B. The element called tin is a metal with the chemical symbol Sn.

Explanation:

A is incorrect because Ni is Nickel, not Niobium.

C is incorrect because Carbon is a nonmetal and its symbol is C, not Cr.

D is incorrect because Copper's symbol is Cu, not Ce.

E is incorrect because As is the symbol for Arsenic, not Astatine.

6 0
3 years ago
Explain why the standard enthalpy of formation () for Cl2 (g) is zero, but its standard entropy is larger than zero.
Galina-37 [17]

The standard enthalpy of formation for chlorine is zero but the standard entropy is larger than 0 because it is the elemental state of chlorine.

The standard enthalpy of formation for chlorine is zero because cl2 is the elemental state of chlorine and it does not require any energy for the formation of the standard state of chlorine.

The entropy of any system cannot be negative. It can only be positive or zero.

The entropy of a system will become zero only at a absolute zero temperature.

That's why the entropy of chlorine in elemental state is more than zero because absolutely zero temperature can't be obtained.

To know more about entropy, visit,

brainly.com/question/6364271

#SPJ4

7 0
1 year ago
45 grams of NaOH to moles
Levart [38]

Answer:

1.125moles

Explanation:

mass of NaOH,m= 45g

molar mass of NaOH, M= 23+16+1

= 40g/mol

mole,n =m/M

n= 45/40

n=1.125mole

7 0
3 years ago
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