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Alinara [238K]
3 years ago
13

What elements are in olive oil?

Chemistry
1 answer:
mars1129 [50]3 years ago
4 0
Oxygen,hydrogen, and carbon
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Intravenous, or IV, solutions used in medicine must exert the same osmotic pressure as blood to prevent a net flow of water into
Novosadov [1.4K]

Answer:

\boxed{\text{7.5 bar}}

Explanation:

1. Find the molar concentration

Assume that we have 100 mL solution.

Mass of NaCl = 0.90 g

\text{Moles of NaCl} = \text{0.90 g} \times \dfrac{\text{1 mol}}{\text{58.44 g}} = 0.0154 \text{ mol}\\\\c = \dfrac{\text{Moles of NaCl}}{\text{Litres of solution}} = \dfrac{0.0154 \text{ mol}}{\text{0.100 L}} = \text{0.154 mol/L}

2. Find the osmotic pressure

The formula for osmotic pressure (Π) is

Π = icRT

T = (37 + 273.15) K = 310.15 K

\Pi = 1.88 \times \text{0.154 mol}\cdot \text{L}^{-1} \times \text{0.083 14 bar}\cdot\text{L}\cdot\text{K}^{-1}\text{mol}^{-1} \times \text{310.15 K} = \text{7.5 bar}\\\\\text{The osmotic pressure of blood at body temperature is }\boxed{\textbf{7.5 bar}}

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3 years ago
Is the autoionization of water endothermic or exothermic?
dexar [7]

it is an endothermic because water can not give off heat it can only take from others like if you were to boil water the water is endothermic and the heat is the exothermic

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What is the name of the the following formula Cd(HOOCCOO)2
Andreyy89

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I think that is called oxalic acid

Explanation:

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