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Sav [38]
3 years ago
7

Which process produces the energy that powers a solar calculator?

Chemistry
2 answers:
Wewaii [24]3 years ago
7 0

Answer:

For solar energy, Nuclear Fusion occurs. You can research this for more detail.

Explanation:

Tema [17]3 years ago
7 0

Answer:

nuclear fission

Explanation:

You might be interested in
Specify the l and ml values for n = 4.
Bumek [7]

Answer : The specify the l and ml values for n = 4 are:

At l = 0,  m_l=0

At l = 1,  m_l=+1,0,-1

At l = 2,  m_l=+2,+1,0,-1,-2

At l = 3,  m_l=+3,+2,+1,0,-1,-2,-3

Explanation:

There are 4 quantum numbers :

Principle Quantum Numbers : It describes the size of the orbital. It is represented by n. n = 1,2,3,4....

Azimuthal Quantum Number : It describes the shape of the orbital. It is represented as 'l'. The value of l ranges from 0 to (n-1). For l = 0,1,2,3... the orbitals are s, p, d, f...

Magnetic Quantum Number : It describes the orientation of the orbitals. It is represented as m_l. The value of this quantum number ranges from (-l\text{ to }+l). When l = 2, the value of m_l will be -2, -1, 0, +1, +2.

Spin Quantum number : It describes the direction of electron spin. This is represented as m_sThe value of this is +\frac{1}{2} for upward spin and -\frac{1}{2} for downward spin.

As we are given, n = 4 then the value of l and ml are,

l = 0, 1, 2, 3

At l = 0,  m_l=0

At l = 1,  m_l=+1,0,-1

At l = 2,  m_l=+2,+1,0,-1,-2

At l = 3,  m_l=+3,+2,+1,0,-1,-2,-3

6 0
3 years ago
For the weak acid ch3cooh (acetic acid) that is titrated with a strong base (naoh), what species (ions/molecules) are present in
liq [111]
This is a strong base / week acid reaction.

NaOH + CH3COOH

The equilibrium of this reaction is very displaced to the right leading to the formation of the products

Na CH3COO + H2O

Na CH3COOH is a ionic compound which in solutionn will be as Na (+) and CH3COOH(-)

=> CH3COOH + NaOH = CH3 COO(-) + Na(+) + H2O

So, the predominant species in the solution are the ions Na(+) and CH3COO(-).

In general, in an strong base / weak acid titration, the predominant species present at the stoichiometric point will be the cation of the strong base (Na+ in this case) and the conjugate base of the weak acid (the anion of the weak acid, which is CH3COO- in this case).

The answer is predominantly Na(+) and CH3COO(-); predominantly because it is an equlibrium which means that the rectants will also br present.
3 0
3 years ago
Wegener proposed the theory of continental drift based on all of the following except?
maxonik [38]

Answer:

A.

Explanation:

The continents on Earth have a fixed position.

Sorry if I'm wrong but I hope this helped

4 0
3 years ago
4) 10.00 mL of sulfuric acid is neutralized in a titration using 18.54 mL of 0.100 M NaOH.
sdas [7]

Answer:

a) H_2SO_4+2NaOH\rightarrow Na_2SO_4+2H_2O

b) M_{H_2SO_4}=0.0927M

Explanation:

Hello!

In this case, for this acid-base reaction which also known as a neutralization because sulfuric acid is neutralized with sodium hydroxide, we can write the undergoing chemical reaction as shown below:

H_2SO_4+NaOH\rightarrow Na_2SO_4+H_2O

However, it needs to be balanced as two sodium atoms are yielded:

H_2SO_4+2NaOH\rightarrow Na_2SO_4+2H_2O

Next, since there is a 1:2 mole ratio between the acid and the base, at the equivalence point, at which the moles of acid and base are consumed, we write:

2n_{H_2SO_4}=n_{NaOH}

Which can also be written in terms of the given volumes and concentration of the base:

2M_{H_2SO_4}V_{H_2SO_4}=M_{NaOH}V_{NaOH}

In such a way, we solve for the concentration of sulfuric acid as shown below:

M_{H_2SO_4}=\frac{M_{NaOH}V_{NaOH}}{2V_{H_2SO_4}} =\frac{18.54mL*0.100M}{2*10.00mL}\\\\ M_{H_2SO_4}=0.0927M

Best regards!

5 0
3 years ago
What is the wavelength of gamma ray electromagnetic radiation with a frequency of 2.73x10^20 Hz?
Amanda [17]

Answer:

1.10 × 10⁻¹² m

General Formulas and Concepts:

<u>Chemistry - Atomic Structure</u>

Speed of Light = Wavelength times Frequency

  • c = λν
  • c = 3.0 × 10⁸ m/s

Explanation:

<u>Step 1: Define</u>

ν  = 2.73 × 10²⁰ Hz

<u>Step 2: Find wavelength</u>

3.0 × 10⁸ m/s = λ(2.73 × 10²⁰ Hz)

λ = 1.0989 × 10⁻¹² m

<u>Step 3: Check</u>

<em>We are given 3 sig figs. Follow sig fig rules.</em>

1.0989 × 10⁻¹² m ≈ 1.10 × 10⁻¹² m

8 0
3 years ago
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