Determine whether each phrase describes carboxylic acids or esters.

1, This element has a complete outermost energy level and is found in the 5th period.

Hoochie [10]

1) Xenon
2) Berylium
3) Aluminium (Assuming 3p = 3rd Period)
4) Tungsten
5) Bromine
6) Xenon again
7) Indium I think
8) Strontium
9) Titanium
10) Oxygen
11) I don't understand that at all XD
12) Rutherfordium
13) Radon
14) Potassium?
15) Argon

So somebody needs to confirm 3, 7, 11, and 14, but I think the rest are correct if you load up a Periodic table

6 0

4 years ago

Which buffer system is found in the human body?

amid [387]

Based on the options given, the most likely answer to this query is C. phosphate buffer system. This type of buffer system is observed to operate among the fluids of the cells. Thank you for your question. Please don't hesitate to ask in Brainly your queries.

5 0

3 years ago

Read 2 more answers

According to the bohr model of the atom, which electron transition would correspond to the shortest wavelength line in the visib

Yuri [45]

n = 6 to n = 2

<h3>Further explanation </h3>

From several sources, we have prepared the following answer choices:

A. n = 2 to n = 5

B. n = 6 to n = 4

C. n = 3 to n = 2

D. n = 6 to n = 2

We will determine which electron transition would correspond to the shortest wavelength line in the visible emission spectra for hydrogen.

The amount of energy released or absorbed by electrons when moving from n₁ level to n₂ level is equal to

$\boxed{ \ \Delta E = -13.6 \Big( \frac{1}{n_2^2} - \frac{1}{n_1^2} \Big) \ }$ in eV.

This energy difference is equal to $\boxed{ \ hf = \frac{hc}{\lambda} \ }$ , where f and λ are the frequency and wavelength of the radiation emitted or absorbed.

Thus, the wavelength is inversely proportional to the energy difference from the electron transition. To get the shortest wavelength, it is determined by the largest ΔE.

From the formula above, we practically only need to calculate part $\boxed{ \ \Big( \frac{1}{n_2^2} - \frac{1}{n_1^2} \Big) \ }$ which is directly proportional to ΔE. Then from the results of the calculation of this section, we will get the shortest wavelength from the largest result..

A. n₁ = 2 to n₂ = 5

$\boxed{ \ \Big( \frac{1}{5^2} - \frac{1}{2^2} \Big) \ }$

$\boxed{ \ -\frac{21}{100} \ }$

By taking the absolute value, we get $\boxed{ \ 0.210 \ }$

B. n₁ = 6 to n₂ = 4

$\boxed{ \ \Big( \frac{1}{4^2} - \frac{1}{6^2} \Big) \ }$

$\boxed{ \ \frac{5}{144} \ }$

We get $\boxed{ \ 0.0347 \ }$

C. n₁ = 3 to n₂ = 2

$\boxed{ \ \Big( \frac{1}{2^2} - \frac{1}{3^2} \Big) \ }$

$\boxed{ \ \frac{5}{36} \ }$

We get $\boxed{ \ 0.1389 \ }$

D. n₁ = 6 to n₂ = 2

$\boxed{ \ \Big( \frac{1}{2^2} - \frac{1}{6^2} \Big) \ }$

$\boxed{ \ \frac{2}{9} \ }$

We get $\boxed{ \ 0.222 \ }$

The last calculation above shows the greatest results so that the shortest wavelength is undoubtedly gained from the electron transition n = 6 to n = 2.

<h3>Learn more</h3>

The energy density of the stored energy brainly.com/question/9617400
Particle's speed and direction of motion brainly.com/question/2814900
The relationship between a single gold atom and the thickness of the atoms in Rutherford's foil brainly.com/question/4929060

Keywords: according to the Bohr model of the atom, which electron transition would correspond, to the shortest wavelength, the visible emission spectra for hydrogen, energy, inversely proportional

5 0

3 years ago

Read 2 more answers

If a reaction takes place using all oxygen available and leaving hydrogen available:

boyakko [2]

Answer:

If a reaction takes place using all oxygen available and leaving hydrogen available, then oxygen is the limiting reactant.

Explanation:

The reaction used up all the oxygen and left over some hydrogen, so oxygen is the liting reactant.

5 0

3 years ago

PLS ANSWER FAST :( BRAINLIEST only if correct AND 25 POINTS tysm

Tomtit [17]

Answer:

1. Yes it is balanced.

2. Water in its state change. It changes the T° from 90° to 100°C. The kinetic energy of the molecules will be higher when the temperature increases.

Explanation:

1. Mg + 2HCl → MgCl₂ + H₂

The equation is balanced, just see the subscript and the stoichiometry of the reaction

You have 1 Mg in both sides, 2 Cl in both sides and 2 H in both sides.

2. Let's use water as an example.

When water changes its temperature, from 90°C to 100°C, we say that is changing from liquid state to gas.

When you give "heat" to something you are modifying its temperature. In this case, this heat increase the temperature of water. Heat is a sort of energy. For this case, the kinetic energy of molecules is higher.

If you see water on a vessel about to boil, you will see particles rising from the bottom to the surface to pass into the gaseous state. If there is an increase in the kinetic energy in the molecules, it means that they will move more freely and much more quickly, so it will be easier for them to "escape" from the liquid phase to the gas phase.

5 0

4 years ago