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Ghella [55]
3 years ago
9

Which element would be the most reactive with K? Br, Na, Ar, or O? And how do you know?

Chemistry
1 answer:
kykrilka [37]3 years ago
5 0
Ar I did this I think i got it right on edunuty
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Using your knowledge of thermochemistry, what equation is appropriate to calculate the heat produced from the HCl-NaOH reaction?
suter [353]

Answer:

Neutralization equation:

HCl + NaOH  → NaCl + H₂O + Heat

Heat would calculated through,

Q = m . c. ΔT

Explanation:

When aqueous sodium hydroxide and hydrochloric acid react with each other a neutralization reaction occur. It produces water and salt. The salt would be sodium chloride.

Chemical equation:

HCl + NaOH  → NaCl + H₂O + Heat

The heat produces can be calculated through the given formula.

Q = m . c. ΔT

Q = amount of heat produces

m = total mass of solution

ΔT = change in temperature of solution

C = specific heat capacity of solution

As the mostly solutions are water so we take the specific heat capacity of water which is 4.186 j/g .°C

7 0
3 years ago
Categorize each hydrocarbon as being saturated or unsaturated.
Bond [772]

Answer :

Saturated hydrocarbon : 3-methyloctane, propane, heptane.

Unsaturated hydrocarbon : cyclopentene, heptyne

Explanation :

Saturated hydrocarbon : These are those hydrocarbons in which all carbon atoms and hydrogen atoms are bonded together with single bonds.

For example : Methane, Ethane, etc.

Unsaturated hydrocarbon : These are those hydrocarbons in which carbon-carbon atom bonded together with double or triple covalent bonds.

For example : Ethene, Butyne, etc.

Therefore, the saturated and unsaturated hydrocarbons are:

Saturated hydrocarbon : 3-methyloctane, propane, heptane.

Unsaturated hydrocarbon : cyclopentene, heptyne

8 0
3 years ago
Orbitals are defined by which term?
emmasim [6.3K]

Answer: Option (d) is the correct answer.

Explanation:

An orbital is defined as the energy shell which can contain a maximum of two electrons with opposite spins.

A wave like behavior of an electron is determined by an orbital and basically an orbital acts like a mathematical function.

For example, in a p-sub shell the orbitals present are p_{x}, p_{y} and p_{z}.

Therefore, we can conclude that orbitals are defined by energy level.

6 0
4 years ago
Am i correct so far on the first question? And how do i convert to molecules... I use avogadro's number, right?
Talja [164]
I'm pretty sure that you multiply the number of moles by avogadro's number (6.02x10^23)... you may want to check.
4 0
3 years ago
The diagram below is supposed to show how a sea breeze is created by convection, but only two of the arrows are drawn correctly.
Lena [83]
The arrow that are drawn correctly are the cool air current and the upper air current. In the sea breeze, warm air moves up because it is less dense that the cool air. The cool air moves down to replace the warm air. The land breeze current moves from the land to the sea while the sea breeze moves from the sea to the land. This creates a continuous flow of current at the sea level.
5 0
4 years ago
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