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3 years ago

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Chemistry

1 answer:

victus00 [196]3 years ago

6 0

Answer:

This isotope has 59 electrons giving it a charge of -2.

Explanation:

To find this we have to understand isotope relates to the mass of the nucleus. This isotope has 59 electrons to counter the protons and give it a negative charge.

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Methane (CH4), ammonia (NH3), and oxygen can react to form hydrogen cyanide (HCN) and water according to this equation:

disa [49]

Assuming the molar mass of oxygen is 18.01, you only need 16 grams (B) of oxygen because the molar mass of hydrogen is about 1 gram.
16+1+1=18

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3 years ago

Sodium Tetraborate, a naturally occurring mineral, is crushed into Borax. This is an example of a ________change. *

Ostrovityanka [42]

Answer:

Chemical Change

Explanation:

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3 years ago

Describe the process of photosynthesis (including what components get released). ASAP

Yanka [14]

Answer: It is convenient to divide the photosynthetic process in plants into four stages, each occurring in a defined area of the chloroplast: (1) absorption of light, (2) electron transport leading to the reduction of NADP+ to NADPH, (3) generation of ATP, and (4) conversion of CO2 into carbohydrates (carbon fixation). All four stages of photosynthesis are tightly coupled and controlled so as to produce the amount of carbohydrate required by the plant. All the reactions in stages 1 – 3 are catalyzed by proteins in the thylakoid membrane. The enzymes that incorporate CO2 into chemical intermediates and then convert it to starch are soluble constituents of the chloroplast stroma (see Figure 16-34). The enzymes that form sucrose from three-carbon intermediates are in the cytosol.

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3 years ago

Enter your answer in the provided box. what is the emf of a cell consisting of a pb2 / pb half-cell and a pt / h / h2 half-cell

sp2606 [1]

Answer:

The emf of the electrochemical cell has been calculated to be <u>3.364.</u>

in order to calculate the emf we need to apply Nernst equation.

The emf has been the potential of the cell in the reaction with the change in the electrons in the reaction. The emf of the cell has been given by the Nernst equation as -

emf= E⁰ cell - 0.059/n. log 1/concentration

Computation for the emf of the cell

The given cell has the number of electrons transfer, n= 2

The concentration of Pb2= 0.57 M

The concentration of H= 0.090 M

The cell potential of the reaction has been= -0.126

Substituting the values for the emf of the cell:

emf= -0.126- 0.059/2 * log 1/ [0.57]x [0.090] ²

emf= 1.555* 2.337

emf=3.634 v

The emf of the electrochemical cell has been calculated to be 3.634 v.

Learn more about emf here-

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2 years ago

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andrew-mc [135]

Answer:

25.)Intrusive rocks have a coarse grained texture. Extrusive Igneous Rocks: ... Quick cooling means that mineral crystals don't have much time to grow, so these rocks have a very fine-grained or even glassy texture. Hot gas bubbles are often trapped in the quenched lava, forming a bubbly, vesicular texture.

Explanation:

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2 years ago