If the temperature of an object is 335 K, how would this be expressed on the Celsius scale?

Vinegars can be 5-20% acetic acid solutions and has been used for medicinal purposes for thousands of years. If a person takes 3

Leto [7]

Explanation:

5.76 is the answer

vinegar a day and the molarity of the vinegar is 0.84 M, then how m

6 0

3 years ago

How can you recognize an alcohol?

gavmur [86]

Answer:

O D. It has an -OH group attached to the end of the molecule.

Explanation:

Some alcohols have hydroxyl group (OH) attached to the end of a molecule and some have it attached as a branch on the molecule

${ \rm{R - OH \: : \: primary \: alcohol \: (1 \degree)}} \\ \\ { \rm{R -(OH) - R {}^{i} \: : secondary \: alcohol \: (2 \degree)}} \\ \\ { \rm{R - R {}^{i} (OH) - R {}^{ii} \: : tertiary \: alcohol \: (3 \degree)}}$

R is aryl or alkyl group
OH is hydroxyl group

5 0

3 years ago

Who made the first periodic table

ale4655 [162]

The other dude is rude wrong

The correct answer is Dmitri Mendeleev

8 0

3 years ago

Arrange the bromine-containing compounds CaBr2, Br2, NBr3, CBr4 in order of increasing predicted boiling point.

Fudgin [204]

Explanation:

In an ionic compound, there will be strong force of attraction between the combining atoms due to the opposite charges present on them.

For example, $CaBr_{2}$ is an ionic compound where calcium has a +2 charge and each bromine atom has a -1 charge.

Therefore, in order to break the bond we need to provide more heat. Hence, boiling point of calcium bromide will be the highest.

$NBr_{3}$ is a covalent compound and as nitrogen is more electronegative in nature and also has a lone pair of electron hence, there will be a net dipole moment.

$CBr_{4}$ is also a covalent compound. And, as bromine is more electronegative than carbon atom so, dipole moment is in the outwards direction. Hence, in $CBr_{4}$ there will be zero dipole moment.

Therefore, its boiling is less than the boiling point of $NBr_{3}$ .

$Br_{2}$ is a covalent compound and there will be no dipole moment.

Thus, we can conclude that given bromine-containing compounds are placed in their increasing boiling point order as follows.

$Br_{2}$ < $CBr_{4}$ < $NBr_{3}$ < $CaBr_{2}$

3 0

4 years ago

The half reaction of an oxidation reduction reaction shows that iron gains electrons. what does this electron gain mean for iron

chubhunter [2.5K]

Answer: The correct option is C.

Explanation:

Oxidation reactions are a type of chemical reactions in which a substance looses electrons and forms positive charge. The substance undergoing this reaction is being oxidized.

$A\rightarrow A^++e^-$

Reduction reactions are a type of chemical reactions in which a substance gains electrons and forms negative charge. The substance undergoing this reaction is being reduced.

$A^++e^-\rightarrow A$

For the half reaction in which iron gains electrons means that iron is getting reduced.

Hence, the correct option is C.

6 0

3 years ago

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