Determine the mass in grams of
7.57 × 10^21 atoms of barium. (The
mass of one mole of barium is
137.33 g.)

Answer:

C

Explanation:

Electrical to Light

When we plug a lamp into a wall socket, the energy transformation that occurs is from electrical energy to light energy.

According to the principle of conservation of energy, energy is neither created nor destroyed but is converted from one form to another. Hence, energy does not "disappear".

When we plug a lamp into a wall socket, the energy transformation that occurs is from electrical energy to light energy.

Learn more about energy transformations: https://brainly.com/question/1301963

A solution has a pH of 5.4, the determination of [H+].

Take negative to other side

-pH = log H+

multiple Antilog on both side

(Antilog and log cancel each other )

Antilog (-pH) = [ H+ ]

New Formula :- Antilog (-pH) = [+H]

Now put the values of pH in new formula

Antilog (-5.4) = [+H]

we can write -5.4 as (-6+0.6) just to solve Antilog

Antilog ( -6+0.6 ) = [+H]

Antilog (-6) × Antilog (0.6) = [+H]

\(Antilog (-6) = {10}^{ - 6} , \\ Antilog (0.6) = 4 \)

put the value in equation

\( {10}^{ - 6} \times 4 = [H+] \\ 4 \times {10}^{ - 6} = [H+]\)

Answer:

The complete sequence : Pro-Leu-Gly-Phe-Gly-Tyr

Explanation:

For the formation of phenylisothiocyanate, the four peptide sequences overlap common residue to get the the complete sequence of the hexapeptide as shown in the diagram attached below

Attached below is the structure of the peptide

A rainbow is produced through a proces that includes refraction, reflection, and dispersion of  sunlight.

A rainbow is formed when sulinght is refracted and reflected by rain drops in the atmospher.

The sunlight is split into its component colors, which is why rainbows appear as having an array of colors. This is due to each color being bent by a different amount during refraction.

The colors of a rainbow are always in the same order, with red on the outside and violet on the inside.

Find more exercises on rainbows;

https://brainly.com/question/7965811

#SPJ1

Answer:Cl2

Explanation:each gas is 1 gm and has the same P andT. The gas with the highest molar mass will have the lowest volume with least moles. Cl2 wins the prize

Answer:

so so

Explanation:

this your question?? <_>

Explanation:

It's argon

As argon has atomic number 18 so it's configuration is

1s2, 2s2, 2p6,3s2, 3p6

Hope it will help :)❤

The given electron configuration 1s2, 2s2, 2p6, 3s2, 3p6 corresponds to the element argon (Ar).

Each number and letter in the electron configuration corresponds to a specific electron orbital and the number of electrons present in that orbital.

In this case, the electron configuration indicates that:

The first shell (n=1) has 2 electrons in the 1s orbital.

The second shell (n=2) has 2 electrons in the 2s orbital and 6 electrons in the 2p orbital.

The third shell (n=3) has 2 electrons in the 3s orbital and 6 electrons in the 3p orbital.

By adding up the total number of electrons (2 + 2 + 6 + 2 + 6), we find that the configuration represents 18 electrons. The element that has 18 electrons is argon, which has an atomic number of 18.

Therefore, the electron configuration 1s2, 2s2, 2p6, 3s2, 3p6 corresponds to the element argon (Ar).

Know more about argon:

https://brainly.com/question/12032224

#SPJ2

Answer:If a liquid is heated the particles are given more energy and move faster and faster expanding the liquid. The most energetic particles at the surface escape from the surface of the liquid as a vapour as it gets warmer. Liquids evaporate faster as they heat up and more particles have enough energy to break away.

Explanation:

Answer:0.46

Explanation:

Answer:

Explanation:

36 grams HClX (1mole HCl /36.46097 g HCl) X (6.02 X 10^23 particles/ 1mole)

=5.943890138 X 10^23 Molecules

As there are total of two atoms in HCl molecule( one hydrogen and one chlorine,

No. of atoms in one mole of HCl = 2x5.943890138x10²³=1.188778028 x10²³ atoms.  If you need it to the correct sig figs answer is 1.8 X x10²³ atoms.

here is where the numbers came from

the 1moleHCl/36.46097 g HCl is the Molar mass (get it from the periodic table

the 6.02 X 10^23 parcticle (atoms or molecules) / 1 Mole is avogadro's number

Answer: Stored energy

Explanation:

Answer:

2. stored energy It is 100% right

Explanation:

Answer:

5.physical change

6.chemical change

7.physical change

8.conservation of mass

9.thermal energy

10.physical change

I honeslty dont know if this is right

explanation:

*☆*――*☆*――*☆*――*☆*――*☆*――*☆*――*☆*――*☆**☆*――*☆*――*☆*――*☆

Answer: True

I hope this helped!

<!> Brainliest is appreciated! <!>

- Zack Slocum

*☆*――*☆*――*☆*――*☆*――*☆*――*☆*――*☆*――*☆**☆*――*☆*――*☆*――*☆

Answer:

true

Explanation:

We frequently observe kids playing with polythene bags filled with water that have little holes drilled into them at various locations so they can sprinkle water on other kids. Through this experiment, we can say that pressure acts in all directions in liquids.

Since both liquids and gases may flow, they are both referred to as fluids. Fluids under rest pressure behave uniformly in all directions.

Weather forecasts can be made using barometers. They track the evolution of atmospheric pressure throughout time.

On weather forecast maps, pressure variations appear as an isobar pattern. Predictions are made using these changes in pressure, and they are fairly accurate when combined with wind observations.

As you go away from a liquid's surface, pressure rises. for instance: A bucket has three holes that are all the same size. Since there is more pressure at the bucket's bottom, the water spills out more forcefully. Dams are thicker at the bottom for this reason.

Learn more about Pressure here:-

https://brainly.com/question/27984798

#SPJ9

Answer:

Gamma Ray's have the highest frequency.

Answer:

gamma rys espero te sirva

Answer:h

Explanation:

Answer:

Acids and alkalis both contain ions. Acids contain lots of hydrogen ions, which have the symbol H+. Alkalis contain lots of hydroxide ions, symbol OH-. Water is neutral because the number of hydrogen ions is equal to the number of hydroxide ions.

Answer: The magnesium ion Mg2+ is formed when the magnesium atom loses the two electrons from its outer shell to form a stable ion with a noble gas configuration.

Explanation:

Answer:

5 atoms

Explanation:

i hope that helps

The non-metal elements in Group 7 – known as the halogens – get less reactive as you go down the group

Answer & Explanation:

The reactivity of elements in Group VII, also known as Group 17, decreases with increasing atomic radius. This is because halogens have high electronegativities and a proclivity to gain electrons in noble gas configurations. Myths are traditional stories or beliefs that explain cultural or societal beliefs, customs, or natural phenomena. They can be passed down through generations and can be based on true or fictitious events. Mythology, on the other hand, is the collection of myths associated with a specific culture or religion. Mythology can be amplified through retelling, incorporation into religious practices; association with significant events or figures, and adaptation into other media forms such as literature, film, or art.

Answer:THE ANSWER IS B

Explanation:

DO NOT TRUST THE OPTHER GUY I JUST DID IT AND GOT IT WRONG BECAUSE OF HIm

The global warming causes severe impacts on plants, animals and all living organisms. Some areas on Earth will experience an increase in rainfall, whereas other areas will experience severe droughts .The correct option is B.

The phenomenon in which there is a gradual increase in the temperature near earth's surface due to the green house effect of the gases like carbon dioxide, methane, etc. is known as global warming.

The green house effect is defined as a process in which the radiations from the sun are absorbed by the green house gases and not reflected back into space. This will depletes the ozone layer.

The major cause of global warming is the incredible increase in the temperature which melts glaciers, increases evaporation and there by causes heavy rainfall. The climatic conditions are changed due to this. There are droughts at some places and floods at some.

Thus the correct option is B.

To know more about global warming, visit;

https://brainly.com/question/29625243

#SPJ2

Answer:Free radical mono-halogenation of an alkane is typically conducted using bromine versus chlorine because the bromine radical is less reactive and therefore more selective.

Explanation: Halogenation occurs when a halogen replaces  one or more hydrogen atoms in an organic compound ie  chlorine or  bromine with the reactivity of the halogens decreasing  in the order of  F2 > Cl2 > Br2 > I2

Since fluorine reacts  explosively making it is difficult to control, and iodine is unreactive. Free radical mono-halogenation of an alkane is typically conducted using bromine versus chlorine  with Chlorination  ie chlorine radical being more reactive and not selective and the Bromination of alkanes ie bromine radical  occurring similarly but slower and less reactive but  more selective which is due to the fact that a bromine atom is less reactive in  the hydrogen abstraction  than a chlorine atom evidence in the  higher bond energy of H-Cl than H-Br.

Answer:

Afom of noble gases can exists independently and form monoatomic molecules like helium neon argon etc so these are monoatomic molecules not compound

Explanation:

Answer: warmer because its an  exothermic reaction.

Explanation: the passage states as the products form thermal energy is absorbed thermal means heat also carbon dioxide creates bubbles

The equilibrium concentration of NO₂ at this temperature is approximately 0.219 M.

To determine the equilibrium concentration of NO₂, we can use the equilibrium constant expression (Kc) and the given equilibrium concentrations of NO and O₂. The equilibrium constant expression for the given reaction is:

Kc = ([NO₂]²) / ([NO]²[O₂])

We are given the equilibrium concentrations of NO and O₂ as [NO] = 0.31 M and [O₂] = 1.10 M, respectively. We need to find the equilibrium concentration of NO₂, denoted as [NO₂].

Using the given equilibrium concentrations and the equilibrium constant expression, we can rearrange the equation and solve for [NO₂]:

Kc = ([NO₂]²) / ([NO]²[O₂])

0.50 = ([NO₂]²) / ((0.31 M)²(1.10 M))

0.50 = ([NO₂]²) / (0.0961 M³)

Multiplying both sides by 0.0961 M³, we have:

0.04805 M³ = [NO₂]²

Taking the square root of both sides, we find:

[NO₂] = √(0.04805 M³)

[NO₂] ≈ 0.219 M

Therefore, the equilibrium concentration of NO₂ at this temperature is approximately 0.219 M.

It's important to note that the units of concentration (M) were used throughout the calculations, and the answer is rounded to three significant figures based on the given data.

Additionally, the negative sign of the enthalpy change (AH) indicates an exothermic reaction, and the equilibrium constant (K) of 0.50 suggests that the reaction favors the products, as the concentration of NO₂ is greater at equilibrium.

For more such questions on equilibrium concentration visit:

https://brainly.com/question/13414142

#SPJ8

Answer:

lungs

Explanation:

Answer:

I'd say it's the first option, A study that follows people for an extended period of time to see if they develop a disease or condition.

Explanation:

Answer:

c - Record !!

Answer:

EZ ANSWER IS C

Explanation:

There are numerous ways to determine whether lead is present in an ore. Atomic absorption spectroscopy is a popular approach. With this method, an ore sample is dissolved in acid and then atomized in a flame or plasma.

The sample's atoms will absorb light at particular wavelengths that are peculiar to the element under investigation. The amount of light absorbed can be used to calculate how much lead is present in the sample. Inductively coupled plasma mass spectrometry and X-ray fluorescence spectroscopy are further techniques. It is crucial to remember that these procedures call for specialized tools and training, thus they ought to only be carried out in a lab by qualified experts.

To know more about spectrometry, here

brainly.com/question/31075363

#SPJ1