What happens if you consume bleach?

Which liquid substance would evaporate most quickly in the open air at 20°C? Explain our answer

kati45 [8]

Answer:

mp -5; bp 30

Explanation:

That will be a liquid at room temperature, and it will evaporate quite quickly. Room temperature is generally considered 20 degrees Celsius. Choice B melts from a solid to a liquid at -5 degrees, so it's a liquid at room temperature as long as the boiling point is higher than 20 degrees.

3 0

3 years ago

Was the french revolution driving force behind the metric system?

goblinko [34]

Answer:

yes, they were

Explanation:

The history of the metric system began in the Age of Enlightenment with notions of length and weighttaken from natural ones, and decimal multiples and fractions of them. The system became the standard of France and Europe in half a century. Other dimensions with unity ratios[Note 1] were added, and it went on to be adopted by the world.

7 0

3 years ago

Which statements are true? The oxidation number for Cu(s) is +2. An oxidizing agent gains electrons. Na+ is formed from the redu

just olya [345]

Answer: The correct statements are:

An oxidizing agent gains electrons and $Zn^{2+}$ is formed from the oxidation of Zn(s).

Explanation:

For the given options:

Statement 1: The oxidation number for Cu(s) is +2

Copper is the 29th element of the periodic table having electronic configuration of $[Ar]3d^{10}4s^1$

This element can show +1 or +2 oxidation states. Thus, this statement is false.

Statement 2: An oxidizing agent gains electrons.

Oxidizing agents are defined as the agents which oxidize other substance and itself gets reduced. These agents undergoes reduction reactions and reduction reaction is the reaction in which an atom gains electrons.

Thus, this statement is True.

Statement 3: $Na^+$ is formed from the reduction of Na(s)

Oxidation reaction is defined as the reaction in which an atom looses its electrons. Here, oxidation state of the atom increases.

$X\rightarrow X^{n+}+ne^-$

Sodium is the 11th element and it will loose electrons to form sodium ion.

$Na\rightarrow Na^++e^-$

Hence, this statement is false.

Statement 4: The oxidation number for Hg(l) is 0.

Mercury is the 80th element of the periodic tale having electronic configuration of $[Xe]4f^{14}5d^{10}6s^2$

This element can show +1 or +2 oxidation states. Thus, this statement is false.

Statement 5: A reducing agent gains electrons.

Reducing agents are defined as the agents which reduces the other substance and itself gets oxidized. These agents undergoes oxidation reactions and oxidation reaction is defined as the reaction in which an atom looses its electrons.

Thus, this statement is false.

Statement 6: $Zn^{2+}$ is formed from the oxidation of Zn(s)

Oxidation reaction is defined as the reaction in which an atom looses its electrons. Here, oxidation state of the atom increases.

$X\rightarrow X^{n+}+ne^-$

Zinc is the 30th element and it will loose electrons to form zinc ion.

$Zn\rightarrow Zn^{2+}+2e^-$

Thus, this statement is True.

Hence, the correct statements are:

An oxidizing agent gains electrons and $Zn^{2+}$ is formed from the oxidation of Zn(s).

4 0

3 years ago

Read 2 more answers

PLEASE HELP ASAP!!THANKS!

Radda [10]

Balanced chemical reaction:

4C₅H₉O + 27O₂ → 20CO₂ + 18H₂O.

According to principle of mass conservation, number of atoms must be equal on both side of chemical reaction.

Type of reaction is combustion.

Combustion is reaction with oxygen.

Organic compound reacts with oxygen and produce carbon dioxide and water.

5 0

4 years ago

1.C3H8 + O2 --> H2O + CO2 (5 Points) Balanced O Unbalanced

Vedmedyk [2.9K]

Answer:

Unbalanced

Explanation:

The balanced equation would be:

C3H8 + 5 O2 ---> 4 H2O + 3 CO2

5 0

4 years ago