Ask question

Ask question

All categories

3 years ago

13

The test tube that contained the calcium metal was probably the most difficult of the test tubes to clean. Why was aqueous HCl u

sed to clean the tube?

1 answer:

natita [175]3 years ago

6 0

Answer:

The HCl will dissolve the calcium readily

Explanation:

HCl will react with d calcium, dissolving it to produce Hydrogen gas

You might be interested in

A board measures 212 inches. How many feet is this?

quester [9]

17.6667 Feet is the answer.

6 0

3 years ago

Read 2 more answers

Colligative properties depend upon the ____. Select one: a. nature of the solute b. nature of the solvent c. number of solute pa

Flauer [41]

The correct answer is C. Colligative properties only depend upon the number of solute particles in a solution but not on the identity or nature of the solute and solvent particles. I hope this anwers your question.

3 0

3 years ago

Read 2 more answers

Differentbetween sound and vibration

Fiesta28 [93]

Answer:

Both are similar concepts.

Sound is the vibration of air particles (compression and expansion) the can reach your ears. But you can have vibration being propagated in liquids and solids as well.

Some sounds are generated in structures, so the vibration of a structure is converted to sound in air — for instance, a loudspeaker.

Explanation:

6 0

3 years ago

How many moles of CO gas are in 34.6 L?

Troyanec [42]

moles of CO gas : 1.545

<h3>Further explanation</h3>

Standard conditions for temperature and pressure are used as a reference in certain calculations or conditions

There are 2 conditions that are usually used as a reference : STP and RTP

Assuming the STP state :

Conditions at T 0 ° C and P 1 atm are stated by STP (Standard Temperature and Pressure). At STP, Vm is 22.4 liters / mol.

Then for 34.6 L of CO gas :

$\tt moles=\dfrac{34.6}{22.4}=1.545$

6 0

2 years ago

Aspirin that has been stored for a long time may give a vinegar like odour and give a purple colour with FeCl3. What reaction wo

iVinArrow [24]

Answer:

See explanation

Explanation:

The IUPAC name of aspirin is 2-Acetoxybenzoic acid. It is composed of an acetoxy moiety and a benzoic acid moiety.

The compound can be hydrolysed under prolonged storage conditions to yield acetic acid which causes the vinegar like odour.

Also, one of the products of this hydrolysis bears a phenol group which reacts with FeCl3 to give a purple color.

3 0

3 years ago