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3 years ago

The periodic table is organized by

Chemistry

1 answer:

N76 [4]3 years ago

7 0

C, atomic number
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alexgriva [62]

Answer:

183N

Explanation:

183N we have to add both mass

5 0

3 years ago

Read 2 more answers

Please help ASAP running late for play offs have no time to do this. Please help , thanks in advance

bagirrra123 [75]

Exo means outer are farthest

thermo means hot or heat

meso means middle or intermediate

tropo means reaction or response

8 0

4 years ago

A solution of saturated pbi2 is found to contain 2.7 ✕ 10−3 m iodide ion. calculate the ksp of pbi2

BigorU [14]

When the compound PbI₂ dissolves, it dissociates as follows;
PbI₂ --> Pb²⁺ + 2I⁻
Molar solubility is the number of moles dissolved in 1 L of solution
A saturated solution is when the maximum amount of solute is dissolved in the solution.
Molar solubility of Iodide when solution is saturated is 2.7 x 10⁻³ mol/L, then solubility of Pb²⁺ is (2.7 x 10⁻³ mol/L) / 2 = 1.35 x 10⁻³ mol/L
ksp is the solubility product constant that can be calculated as follows;
ksp = [Pb²⁺][I⁻]
ksp = (1.35 x 10⁻³ mol/L) x (2.7 x 10⁻³ mol/L)²
= 1.35 x 10⁻³ x 7.29 x 10⁻⁶
= 9.8 x 10⁻⁹

4 0

3 years ago

Earth orbits the Sun every 365 days, causing seasonal patterns that vary by location. In the winter, the Northern Hemisphere is

s344n2d4d5 [400]

Answer:

Explanation:

4 0

3 years ago

Determine if each of the following will form a neutral, acidic, or basic solution and explain why. Show your work.

vodomira [7]

Answer:

For a: The given salt is acidic in nature.

For b: The given salt is neutral in nature.

For c: The given salt is neutral in nature.

Explanation:

Salts are formed by the combination of an acid and a base. There are 3 types of salt:

Acidic salt: It is formed by the combination of strong acid and weak base.
Basic salt: It is formed by the combination of a strong base and weak acid.
Neutral salt: It is formed by the combination of strong acid and strong base or weak acid and weak base.

For the given options:

(a): $NaHSO_4$

This salt is formed by the combination of sodium hydroxide (strong base) and the partial dissociation of sulfuric acid (strong acid). It also has a replaceable hydrogen ion which can be produced when dissolved in water. Thus, the given salt is acidic in nature.

(b): $Na_2SO_4$

This salt is formed by the combination of sodium hydroxide (strong base) and sulfuric acid (strong acid).

Thus, the given salt is neutral in nature.

(c): $NH_4CN$

This salt is formed by the combination of ammonium hydroxide (weak base) and hydrocyanic acid (weak acid).

Thus, the given salt is neutral in nature.

7 0

3 years ago