Colligative properties area. chemical properties.
b. physical properties.
c. biological properties.
d. none of these

Answers

Answer 1

Answer: B. Physical Properties

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How many grams of NH3 can be produced from 4.54 mol of N2 and excess H2?

Answers

First we make a Balanced Chemical Equation:

$N_(2) + 3H_(2) = 2NH_(3)$

Now we can solve using the Mole Ratio:

4.54 mol N2 × 2 / 1 × 17.04 g/mol NH3
= 154.72 g

If you need further clarification, feel free to comment.

Una muestra contiene 160 g de bromo y 2 g de hidrógeno. Otra muestra de bromuro de un metal contiene 4 g de bromuro y 1 g de metal. Halla el peso equivalente del metal.

Answers

Answer:

$x = 40\,g$

Explanation:

El peso equivalente del metal se calcula por regla de tres simple:

$x = \left((160\,g\,Br)/(4\,g\,Br)\right)\cdot (1\,g)$

$x = 40\,g$

Answer:

El peso equivalente del metal es 1/20 g

Explanation:

Una muestra contiene 160 g de bromo y 2 g de hidrógeno. Otra muestra de bromuro metálico contiene 4 g de bromuro y 1 g de metal. Encuentra el peso equivalente del metal

Aquí tenemos la primera muestra que tiene la relación de bromo a hidrógeno de 160 g de bromo a 2 g de hidrógeno.

Eso es 160 g de bromo está presente con 2 g de hidrógeno

Dividiendo la combinación anterior por 160 para encontrar la cantidad de hidrógeno que se combina con 1 g de bromo, tenemos

(160 g) / 160 de bromo está presente con (2 g) / 160 de hidrógeno

1 g de bromo está presente con 1/80 g de hidrógeno

Por lo tanto, 4 g de bromo están presentes con 4/80 g de hidrógeno o tenemos;

4 g de bromo están presentes con 1/20 g de hidrógeno

Por lo tanto, el peso equivalente del metal = 1/20 g.

In a reaction progress curve, which point on the curve corresponds to an intermediate of the reaction?

Answers

Answer : The valley between the two peaks is usually referred to intermediate formation of the reaction. The two mountain peaks when formed in a reaction the stable phase between them is exactly when an intermediate is formed and often observed on the curve.

The valley between two peaks

2. how are firefighters expected to deal with them

Answers

Expected to deal with what? Fires?

Energy transfer by convection is primarily restricted toA. gases.
B. liquids.
C. solids.
D. fluids.
E. none of the above

Answers

The answer is fluids.

Final answer:

Convection is the transfer of heat in a fluid (which can be a liquid or gas) through the movement of its particles. A fluid near a heat source will get heated, causing it to rise and exchange place with the cooler, denser fluid.

Explanation:

Energy transfer by convection is primarily restricted to both liquids and gases, which are both classified as fluids. Hence, the correct answer is D. Fluids.

Convection refers to heat transfer in a gas or liquid by the circulation of currents from one region to another. This happens when a fluid near a heat source gets heated, its particles move faster and spread apart, causing the fluid to become less dense. As a result, the warmer, less dense fluid rises, and the cooler, denser fluid sinks. The continuous movement of fluid in this way creates what we call a convection current, which results in the transfer of energy.

Learn more about Energy Transfer by Convection here:

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While testing amylase activity, John uses a buffer of pH 6 and substrate starch. He incubates them at 104ºF (40ºC). All the tubes show glucose formation, except one, which had no starch solution. Why did this happen?A) the optimum pH for enzyme amylase is not pH 6
B) the optimum temputure for the enzyme amylase is not 104. F (40.)
C) the substrate for amylase, starch, is not present

Answers

While testing amylase activity, John uses a buffer of pH 6 and substrate starch. He incubates them at 104ºF (40ºC). All the tubes show glucose formation, except one, which had no starch solution because the substrate for amylase, starch, is not present so thats why it does not show glucose formation
so correct option is C
hope it helps

Answer:

Explanation:

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What is the result of multiplying (2.5 × 1010) × (3.5 × 10-7)?