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Chemistry

1 answer:

Elden [556K]3 years ago

5 0

Answer:

B) rate of growth I'd say

Explanation:

it sounds better I don't think anyone would use height of plants if they want to sound professional

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Can anyone give the ans please ...

Burka [1]

Answer:

..................mm.m

8 0

4 years ago

A solution is prepared at that is initially in nitrous acid , a weak acid with , and in sodium nitrite . Calculate the pH of the

bija089 [108]

Answer:

4.07

Explanation:

There is some info missing. I think this is the original question.

A solution is prepared at 25 °C that is initially 0.057 M in nitrous acid (HNO₂), a weak acid with Ka = 4.5 × 10⁻⁴, and 0.30 M in sodium nitrite (NaNO₂). Calculate the pH of the solution. Round your answer to 2 decimal places.

Nitrous acid is a weak acid and nitrite (coming from sodium nitrite) is its conjugate base. Together, the form a buffer system. We can calculate its pH using the Henderson-Hasselbach equation.

pH = pKa + log [base]/[acid]

pH = -log 4.5 × 10⁻⁴ + log 0.30/0.057

pH = 4.07

7 0

3 years ago

Calcular el valor de la presión osmótica que corresponde a una solución que contiene 2 moles de soluto en un litro de solución a

Brums [2.3K]

El valor de la presión osmótica que corresponde a una solución que contiene 2 moles de soluto en un litro de solución a una temperatura de 17°C es 47.56 atmósferas.

La presión osmótica se puede calcular usando la siguiente ecuación:

$\pi = \frac{nRT}{V}$ (1)