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3 years ago

Why is acetic acid a liquid at room temperature? give reason.

Chemistry

1 answer:

Reptile [31]3 years ago

3 0

Answer:

Acetic acid is a liquid at room temperature if room temperature is 20 C or above. ... Pure acetic acid is often called glacial because at a low temperature it solidifies and looks like ice. The melting point is 16.6C so not much below room temp.

Explanation:

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You're a dentist and want your patients to have the cleanest smiles possible. You're not sure which toothpaste to recommend and

ololo11 [35]

Answer:

Why do you need good toothpaste?

Explanation:

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3 years ago

A 20.38 gram sample of cobalt is heated in the presence of excess sulfur. A metal sulfide is formed with a mass of 31.47 g. Dete

Viefleur [7K]

Answer: The empirical formula of the metal sulfide is $CoBr_{2}$ .

Explanation:

Given: Mass of metal = 20.38 g

Mass of metal sulfide = 31.47 g

Moles is the mass of a substance divided by its molar mass.

So, moles of cobalt (molar mass = 59 g/mol) are as follows.

$Moles = \frac{mass}{molarmass}\\= \frac{20.38 g}{59 g/mol}\\= 0.345 mol$

Moles of bromine (molar mass = 80 g/mol) are as follows.

$Moles = \frac{(31.47 - 20.38) g}{80 g/mol}\\= \frac{11.09 g}{80 g/mol}\\= 0.138 mol$

Now, the ratio of number of moles of cobalt and number of moles of bromine are as follows.

Moles of Co : Moles of Br = 1 : 2

Hence, the empirical formula is $CoBr_{2}$ .

Thus, we can conclude that the empirical formula of the metal sulfide is $CoBr_{2}$ .

6 0

3 years ago

The real purpose of the Milgram study was to investigate 1. the effects of punishment. 2. memory and learning. 3. the effect of

miskamm [114]

Answer:

1. the effects of punishment.

Explanation:

Stanley Milgram (1933 - 1984) was a graduate American psychologist at Yale University who conducted the Little Worlds Experience (the source of the concept of the six degrees of separation) and the Milgram Experience on obedience to authority.

Milgram was interested in researching how far people would go in obeying an instruction if it involved harming another person.

The study aimed to observe how easily ordinary people could be influenced into committing atrocities.

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3 years ago

A body of mass 0.5kg is thrown vertically upwards

Katen [24]

Here's the solution,

we know,

<u>potential energy</u> = mgh

where,

m = mass = 0.5 kg
g = acc due to gravity = 9.8 m/s²
h = height = 0.8 m (80 cm)

So,

=》

$p.e = 0.5 \times 9.8 \times 0.8$

=》

$p.e = 3.92 \: \: joules$

8 0

3 years ago

Read 2 more answers

How does weathering break down or change rocks

tatyana61 [14]

Well weathering adds different elements to rocks which they might not be used to. For example, very hard rain & harsh winds could push a rock, causing it to fall & break off into smaller rocks.

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3 years ago