How many carbon dioxide molecules should be added to the products side to obey the law of conservation of matter?

Draw the organic product formed when the structure shown below undergoes a reaction with nanh2. there is no aqueous workup in th

blagie [28]

Answer:

Prop-1-yn-1-ide

Explanation:

In this case, we will have an acidic hydrogen upon the left carbon in the alkyne. In the presence of a base, we can remove this hydrogen. In this reaction the base will be $NH_2^-$ . The amidure ion will remove the hydrogen of the alkyne to produce a carboanion. (See figure)

5 0

3 years ago

What best explains the type of energy present in the wheels of a moving bus?

Nina [5.8K]

id say its C mechanical energy making the wheels turn.

4 0

4 years ago

QUESTION 51 Buffer capacity is best defined as: OA) Buffer capacity is the amount of acid or base that can be added to a buffer

Schach [20]

Answer:

The best definition is: "Buffer capacity is the amount of acid or base that can be added to a buffer without destroying its effectiveness"

Explanation:

A buffer is a solution that is somewhat resist to pH changes by reacting with acids and bases that may be added into the solution. It's capacity is the amounto of acid or base that can be added into solution without much change in pH.

So the best definition is: "Buffer capacity is the amount of acid or base that can be added to a buffer without destroying its effectiveness"

4 0

4 years ago

9. Calculate the standard enthalpy of the 3rd reaction using the given data: A,H° = +52.96 kJ/mol AFH= -483.64 kJ/mol H2s)+I202

Mice21 [21]

Answer:

-586.56 kJ/mol is the standard enthalpy of the 3rd reaction.

Explanation:

$H_2(g) +I_2(s) \rightarrow 2 HI(g) ,\Delta H^{o}_{1}= +52.96 kJ/mol$ ...[1]

$2 H_2(g) + O_2(g)\rightarrow 2 H_2O(g),\Delta H^{o}_{2}=-483.64 kJ/mol$ ...[2]

$4 HI(g)+O_2(g)\rightarrow 2 I_2(s)+2 H_2O(g) ,\Delta H^{o}_{3} =?$ ..[3]

The unknown standard enthalpy of third reaction can be calculated by using Hess's law:

The law states that 'the heat absorbed or evolved in a given chemical equation is the same whether the process occurs in one step or several steps'.

[2] - 2 × [1] = [3]

$O_2+4HI\rightarrow 2H_2O(g)+2I_2(s)$

$\Delta H^{o}_{3}=\Delta H^{o}_{2}-2\times \Delta H^{o}_{1}$

$=-483.64 kJ/mol - 2\times (52.96 kJ/mol)=-586.56 kJ/mol$

The standard enthalpy of the 3rd reaction is -586.56 kJ/mol.The negative sign indicates that energy is released during this reaction.

6 0

4 years ago

QUE CAMBIOS SE PRODUJERON EN LOS MEDIOS EN EL SIGLO XX ?

iogann1982 [59]

Answer:

the answer is 10

Explanation:

The rule of three or is a way of solving problems of proportionality between three known values and an unknown value, establishing a relationship of proportionality between all of them. That is, what is intended with it is to find the fourth term of a proportion knowing the other three. Remember that proportionality is a constant relationship or ratio between different magnitudes.

If the relationship between the magnitudes is direct, that is, when one magnitude increases, so does the other, the direct rule of three must be applied. To solve a direct rule of three, the following formula must be followed:

a ⇒ b

c ⇒ x

So,

The direct rule of three is the rule applied in this case as follows: If the change in water level is 0.05 inches per hour, what is the change in water level after 24 hours?

change in water level=1.2 inches

To pass a decimal number to a fraction, you must:

Put the decimal number in a fraction above a 1. That is, the decimal number is the numerator, 1 the denominator.

Find an equivalent fraction. That fraction will carry in the denominator a 1, and as many zeros as decimals the number has.

Multiply the number above by that number.

Simplify the fraction.

Applied to this case would be:

Since the denominator was multiplied by 10, the decimal numerator is also multiplied by 10:

Simplifying the rational number (for this the numerator and denominator is divided by the same number, in this case by number 2), you get:

Finally, the change in the water level of the pond after 24 hours is 1.2 inches or what is the same inches

4 0

3 years ago