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melamori03 [73]
3 years ago
10

Representa la unión iónica entre los siguientes átomos: 1) Bromo y Potasio 2) Calcio y Oxígeno 3) Cloro y Magnesio 4) Sodio y Fl

úor 5) Aluminio y Nitrógeno Ayuda por favoor
Chemistry
1 answer:
Kobotan [32]3 years ago
3 0

Answer:

a. KBr

b. CaO

c. MgCl₂

d. NaF

e. NH₃

Explanation:

a. 2K + Br₂ = 2KBr

b. 2Ca + O₂ = 2CaO

c. Mg + Cl₂ = MgCl₂

d. 2Na + F₂ = 2NaF

d. N₂ + 3H₂ = 2NH₃

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What is the number of grams of N₂ (g) that contains 1.80 x 10^24 molecules?
svet-max [94.6K]

Answer:

83.69 gm

Explanation:

molar weight of N2 = 28

Find the number of moles then multiply by this

1.8 x10^24/ (6.022x10^23)   * 28 =83.69 gm

7 0
2 years ago
What would be the pH of a solution of a solution with a hydrogen ion concentration of 0.001 M?
son4ous [18]

0001 M HCl is the same as saying that 1 *10-4 moles of H+ ions have been added to solution. The -log[. 0001] =4, so the pH of the solution =4.

7 0
3 years ago
A sample of methane gas, CH4, occupies 3.25 L at temperature of 19.0 o C. If the pressure is held constant, what will be the tem
Artemon [7]

Answer:

625.46 °C

Explanation:

We'll begin by converting 19 °C to Kelvin temperature. This can be obtained as follow:

T(K) = T(°C) + 273

T(°C) = 19 °C

T(K) = 19 °C + 273

T(K) = 292 K

Next, we shall determine the Final temperature. This can be obtained as follow:

Initial volume (V₁) = 3.25 L

Initial temperature (T₁) = 292 K

Final volume (V₂) = 10 L

Final temperature (T₂) =?

V₁/T₁ = V₂/T₂

3.25 / 292 = 10 / T₂

Cross multiply

3.25 × T₂ = 292 × 10

3.25 × T₂ = 2920

Divide both side by 3.25

T₂ = 2920 / 3.25

T₂ = 898.46 K

Finally, we shall convert 898.46 K to celsius temperature. This can be obtained as follow:

T(°C) = T(K) – 273

T(K) = 898.46 K

T(°C) = 898.46 – 273

T(°C) = 625.46 °C

Therefore the final temperature of the gas is 625.46 °C

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3 years ago
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