Express 0.5 mg/mL in ug/uL

Chemistry

1 answer:

Finger [1]3 years ago

5 0

0.5 mg/mL would be expressed as 500 ug/uL

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A student placed equal volumes of honey and of water in two, identical, open dishes, and left them at room temperature for 8 hou

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Answer: Honey has a much lower vapor pressure than pure water has. So, pure water evaporates at a much higher rate.

Explanation:

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_____Mg + ____Fe2O3 → _____Fe + ____MgO

german

Answer:

3Mg + Fe₂O₃ → 2 Fe + 3MgO

Explanation:

Chemical equation;

Mg + Fe₂O₃ → Fe + MgO

Balanced Chemical equation;

3Mg + Fe₂O₃ → 2Fe + 3MgO

This is the balanced equation. There are three magnesium, two iron and three oxygen atoms are on both side of equation thus it follow the law of conservation of mass.

Law of conservation of mass:

According to the law of conservation mass, mass can neither be created nor destroyed in a chemical equation.

This law was given by french chemist Antoine Lavoisier in 1789. According to this law mass of reactant and mass of product must be equal, because masses are not created or destroyed in a chemical reaction.

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3 years ago

In principle, the equilibrium in the dehydration of an alcohol could be shifted to the right be removal of water. Why is this ta

Trava [24]

Answer:

See explanation

Explanation:

In this case, we have to remember that if we want to remove water from the reaction vessel we have to heat the vessel. So, we can convert the liquid water into gas water and we can remove it from the vessel. In this case, the products of dehydration for both molecules are (E)-4-methylpent-2-ene and cyclohexene with boiling points of 59.2 ºC and 89 ºC respectively. The boiling point of water is 100 ºC, therefore if we heat the vessel the products and water would leave the system, and the products would be lost.

See figure 1

I hope it helps!