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34kurt
12 days ago
15

A solution is 0.010 M in each of Pb(NO3)2, Mn(NO3)2, and Zn(NO3)2. Solid NaOH is added until the pH of the solution is 8.50. Whi

ch of the following statements is true? Salt Ksp Pb(OH)2 1.4 × 10–20 Mn(OH)2 2.0 × 10–13 Zn(OH)2 2.1 × 10–16 a. All three hydroxides will precipitate. b. No precipitate will form. c. Only Pb(OH)2 will precipitate. d. Only Mn(OH)2 will precipitate. e. Only Zn(OH)2 and Pb(OH)2 will precipitate.
Chemistry
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A scuba tank contains a mixture of oxygen (O2) and nitrogen (N2) gas. The oxygen has a partial pressure of PO2=5.62MPa. The tota
castortr0y [3046]
The partial pressure of nitrogen gas is calculated to be 21.16 MPa. The partial pressure of oxygen equates to 5.62 MPa, and the overall gas pressure is stated as 26.78 MPa. This adheres to the principle that the total pressure in a gas system equals the sum of all individual gas partial pressures. Thus, the total pressure in the system reflects the sum of the partial pressures of nitrogen and oxygen. Accordingly, the partial pressure for nitrogen can be derived as follows: Total pressure minus the partial pressure of oxygen. Thus resulting in: 26.78 - 5.62, which gives a partial pressure of nitrogen at 21.16 MPa.
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1 month ago
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Which biomolecule is composed of five basic elements: carbon, hydrogen, oxygen, nitrogen, and phosphorus arranged into two types
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DNA is the biomolecule in question.
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The direction of the arrow indicates that the bond involving the chlorine atom and the fluorine atom is nonpolar. The fluorine atom pulls the electrons in the bond with greater strength, resulting in the chlorine atom being a little positive.

Explanation:

  • The bond formed between chlorine and fluorine displays nonpolar characteristics because both atoms contribute an equal share of electrons within the bond. Examples such as H2, F2, and Cl2 illustrate this concept well.
  • Both chlorine and fluorine are electronegative elements, yet fluorine resides above chlorine in the periodic table. Fluorine's position above chlorine gives it a somewhat higher electronegativity compared to chlorine. This explains why fluorine molecules attract electrons more efficiently than chlorine atoms, resulting in chlorine exhibiting a slight positive charge in bonds between Cl and F.

8 0
2 months ago
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above shows a balloon full of gas which has a volume of 120.0ml at 300.0k assuming pressure remains constant , what is the voume
castortr0y [3046]
The balloon's volume is 128 ml when the gas temperature rises to 320.0 K. Explanation: Given the following: T1 (initial temperature) = 300K, V1 (initial volume) = 120ml, T2 (final temperature) = 320 K, V2 (final volume) =?. Pressure is kept constant during this process. From the equation: Given that the pressure stays constant, we have: V2 = Putting the values into this formula yields: V2 = 128 ml, which indicates the volume of the gas when the temperature increases from 300 K to 320 K.
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2 months ago
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