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2 years ago

Does the H₂SO4 solution contain ions? O yes O no

Chemistry

1 answer:

Artist 52 [7]2 years ago

8 0

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Actually Welcome to the concept of Ions .

If we see the reaction.

H2SO4 ==> 2H+ + (SO4)2-

Here you can see, H+ ( Hydrogen ions) and (SO4) 2- ( sulphate ions) are the ions when the H2SO4 is dissolved in water.

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How many formula units are there in 103 g of NaCl?

charle [14.2K]

Answer:

1.059 x 10^24 formula units

Explanation:

103/58.44 = 1.76 moles NaCl

1.76 x 6.022 x 10^23 = 1.059 x 10^24

3 0

2 years ago

using what you know about electron configurations explain the notion that elements in the same column in the periodic table have

Levart [38]

Answer:

Two elements in same group having similar properties.

Explanation:

The elements shows similar properties if they have same number of valance electrons.

As we move left to right in periodic table the number of valance electrons increases in case of every element

When we move top to down in the group of periodic table the number of valance electrons remain same. So the elements in same group shows similar properties.

For example:

Fluorine and chlorine are present in same group, both have same valance electrons so they shows similar properties.

Electronic configuration of fluorine.

F₉ = [He] 2s² 2p⁵

Electronic configuration of chlorine.

Cl₁₇ = [Ne] 3s² 3p⁵

Both have same number of valance electrons that's why showing similar physical and chemical properties.

5 0

3 years ago

Alpha-mannosidase follows Michaelis-Menten kinetics. A 3 micromolar solution of alpha-mannosidase catalyzes the formation of .66

pantera1 [17]

Answer:

220

Explanation:

V₀= Vmax(D)/ (D) + km

0.66/100=vmax(130km)/(130km)+(km)

Vmax= 0.66×131/130×1000 =0.6650mm/d

kwat= vmax/ET

=0.665×10⁻³/ 3×10⁻⁶

= 0.22×10³

= 220

4 0

2 years ago

Supongo que quiere preparar una solución al 10% de sulfato de magnesio en peso. El frasco del producto químico que se tiene indi

Darina [25.2K]

Answer:

Se requerirán 14.57 gramos de MgSO₄·7H₂O, que se disolverían en 105.43 gramos de agua.

Explanation:

Si tenemos 120 gramos de una solución al 10% de sulfato de magnesio en peso, habrán en la solución (120*10/100) 12 gramos de sulfato de magnesio (MgSO₄).

Sin embargo, el reactivo que está disponible es heptahidratado (MgSO₄·7H₂O), por lo que hay que calcular cuántos gramos de sulfato de magnesio heptahidratado contendrán 12 gramos de MgSO₄.

Calculamos las moles de 12 gramos de MgSO₄, usando su masa molecular:

12 g MgSO₄ ÷ 120.305 g/mol = 0.0997 mol MgSO₄.

Después calculamos la masa de MgSO₄·7H₂O que contendrá 0.0997 mol MgSO₄, usando la masa molecular de MgSO₄·7H₂O:

0.0997 mol * 246.305 g/mol = 14.57 g MgSO₄·7H₂O

Para saber la cantidad de agua en la que se disolverá el reactivo, restamos la masa de soluto de la masa total de la solución:

120 g - 14.57 g = 105.43 g

6 0

2 years ago

Independent, dependent, and controlled variable?

Arlecino [84]

I would personally say a Controlled Variable because you are purposefully not spraying the other arm.

3 0

2 years ago