A student must make a 3 m acid solution using a 5 m acid solution. which of these is the safest way to make the solution?

1 answer:

8 0

The motivation to abstain from adding water to concentrated acids is that, with a few acids, amid weakening, a considerable measure of warmth is discharged, by adding the corrosive to the water, the generally extensive measure of water will retain the warmth. On the off chance that you added water to concentrated corrosive when you initially beginning pouring the water, it could get sufficiently hot for the little measure of water that was filled all of a sudden bubble and splatter corrosive on you. Concentrated sulfuric corrosive is most famous for doing this, not all acids get that hot on weakening, but rather in the event that you make a propensity for continually adding the corrosive to water for every one of them, you can't turn out badly.

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Substances that are more dense have ___________ (lower or higher) specific gravity.

natita [175]

Answer:

Higher

Explanation:

The answer is higher because Specific gravity is the density of a substance divided by the density of water. Specific gravity is almost always very close to the same value as the density is, meaning the higher, or more dense, a substance is, the higher the specific gravity is.

4 0

3 years ago

Oversteepened slopes often lead to mass movements because

Lera25 [3.4K]

D. the angle of their slope is greater than 40 degrees.

Oversteepened slopes often lead to mass movements because the angle of their slope is greater than 40 degrees.


NOT:
A. the angle of their slope is between 50 and 60 degrees.
B. plants cannot grow on them. 
C. the angle of their slope is less than 50 degrees.

6 0

3 years ago

Read 2 more answers

Below is a list of molecules with different chemical characteristics. Knowing that all molecules will eventually diffuse across

Ilia_Sergeevich [38]

Answer:

c. estrogen > propanol > alanine > sodium

Explanation:

The phospholipid bilayer is formed by amphoteric lipids, the nonpolar region is inside the bilayer, so the diffusion of nonpolar molecules are easy (nonpolar reacts with nonpolar) and generally occurs passively (without loss of energy). With the increase of the polarity, the diffusion became difficult and slow. All the molecules are shown below.

Estrogen has two points of polarity in its hydroxides, but the carbon rings stabilize the molecule, and it has low polarity. Then, propanol has only one hydroxide and is the second-lowest polar molecular. Alanine has two points of polarity because oxygen and nitrogen have high electronegativities. Then, the ion sodium has a charge and has no stabilization such as the molecules, so it is the most difficult to diffuse.