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3 years ago

One method for preparing a nitrile is the dehydration of a primary amide.

1 answer:

4 0

True because a dehydration reaction is a conversion that involves the loss of water from the reacting molecule or ion. Dehydration reactions are common processes, the reverse of a hydration reaction. Common dehydrating agents used in organic synthesis include sulfuric acid and alumina. Often dehydration reactions are effected with heating.

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What is the most reactive element

SashulF [63]

Answer:

fluorine

Explanation:

3 0

3 years ago

2.00 L of 0.800 M NaNO3 must be prepared from a solution known to be 2.50 M in concentration.How many mL are required? Plus don'

Morgarella [4.7K]

Answer:

1.36 × 10³ mL of water.

Explanation:

We can utilize the dilution equation. Recall that:

$\displaystyle M_1V_1= M_2V_2$

Where M represents molarity and V represents volume.

Let the initial concentration and unknown volume be M₁ and V₁, respectively. Let the final concentration and required volume be M₂ and V₂, respectively. Solve for V₁:

$\displaystyle \begin{aligned} (2.50\text{ M})V_1 &= (0.800\text{ M})(2.00\text{ L}) \\ \\ V_1 & = 0.640\text{ L} \end{aligned}$

Therefore, we can begin with 0.640 L of the 2.50 M solution and add enough distilled water to dilute the solution to 2.00 L. The required amount of water is thus:
$\displaystyle 2.00\text{ L} - 0.640\text{ L} = 1.36\text{ L}$

Convert this value to mL:
$\displaystyle 1.36\text{ L} \cdot \frac{1000\text{ mL}}{1\text{ L}} = 1.36\times 10^3\text{ mL}$

Therefore, about 1.36 × 10³ mL of water need to be added to the 2.50 M solution.

8 0

2 years ago

For a science project, Janet performs four experiments that are supposed to show a chemical reaction. She displays her results i

Lina20 [59]

A. experiment 1 i believe its the best answer

7 0

3 years ago

Which part of feature is included in the hydrosphere?

katrin [286]

Answer:

C. glaciers

Explanation:

Glaciers are a part of the hydrosphere

The hydrosphere is the amount of water on the earth. It includes water in the different states found on the earth surface and within the subsurface. Water does exists as solids, liquids and in vapor form on earth.

Glacier is the solid form of water on the earth crust.
It is a significant part of the hydrosphere.
Most glaciers are found around the polar regions and high altitude zones on the earth.
It is an important source of fresh water for the ecosystem

7 0

3 years ago

Read 2 more answers

I will mark brainlist if correct !! :) PLS HELPPP

Soloha48 [4]

<h2>Answer: Option B</h2>

Option A is incorrect. Heated water cannot freeze.

Option B is correct. Heated water will evaporate.

Option C is incorrect. Heated water cannot create condensation.

Option D is incorrect. Water can't melt when heated unless it's been frozen beforehand.

6 0

3 years ago