This element has a complete outermost energy level and is found in the 4th period.
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Related Questions
A solution can be both a. Dilute and concentrated b. Saturated and dilute c. Saturated and unsaturated d. Supersaturated and saturated e. None of these
To what volume in millimeters must 50.0 mL of 18.0 M H2SO4 be diluted to obtain 4.35 M H2SO4?
A 3.50 g sample of an unknown compound containing only C , H , and O combusts in an oxygen‑rich environment. When the products have cooled to 20.0 °C at 1 bar, there are 4.41 L of CO2 and 3.26 mL of H2O . The density of water at 20.0 °C is 0.998 g/mL.
The components in a mixture do not combine chemically true or false?
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The density of gold is 19.32. The two reasons due to which the statement is incomplete are there is no unit and it doesn't present the temperature and pressure.
What is density?
Density has been defined as the mass per unit volume it means that mass is present in one meter cube.
S.I unit of density is kg/meter^3.
Mathematically
Density = Mass/Volume.
Momentum has been the product of mass and velocity. It is a vector quantity and it's S.I unit kg x meter/sec. There will be no effect of the outside environment on the potential energy that has to be present inside the body. The kinetic energy decrease or increase with change in the velocity.
Weight has been defined as the total heaviness of the body or object. It has been also known as the portion of anything weighs. In physics weight has been known as the vertical force which has experienced by mass which is due to the gravitation. The weight has been equal to the mass of the body and the product of mass and acceleration of free fall is known as weight.
Therefore, The density of gold is 19.32. The two reasons due to which the statement is incomplete are there is no unit and it doesn't present the temperature and pressure.
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B. Minerals are deposited into the soil through erosion.
C. The surface area of rocks decreases because of acid rain.
D. Materials are transported through erosion and are dropped in another location.
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Which of the following statements describes the process of deposition?Deposition can be best described as materials being transported through erosion that are dropped in another location, so the answer is D.
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Answer:
There are 1, 13 moles of chlorine gas.
Explanation:
We apply the formula of the ideal gases, we clear n (number of moles); we use the ideal gas constant R = 0.082 l atm / K mol:
PV= nRT ---> n= PV/RT
n= 0,98 atm x 35,5 L /0,082 l atm / K mol x 373 K
n= 1,137448506 mol
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HClO + H2O ⇄ H3O+ +OCl-
Then the equilibrium constant, Ka, of dilute HClO would be:
Then we do the ICE table. I is for the initial concentration, C for the change and E for the excess.
HClO + H2O ⇄ H3O+ + OCl-
I 1.0x10^-4 0 0
C -x +x +x
E (1.0x10^-4 - x) x x
Substituting the excess (E) concentration to the Ka equation:
Simplifying the equation would yield a quadratic equation:
The Ka for HClO is an experimental data which was determined to be 2.9 x 10^-8. Substitute this to the equation, determine the roots, then you get the value for x, which is the concentration of H3O+ and ClO-. Just use your calculator feature Shift-Solve.
x = 1.688 x 10^-6 M = [H3O+] = [ClO-]
Then, you can determine the conc of [OH-] through pH.
pH = -log {H3O+] = -log [1.688 x 10^-6] = 5.77
pOH = 14 - pH = 14 - 5.77 = 8.23
pOH = 8.23 = -log [OH-]
[OH-] = 5.89 x 10^-9 M
Also, since HClO is (1.0x10^-4 - x), then it's concentration would be:
[HClO] = 1.0x10^-4 - 1.688 x 10^-6 = 9.83 x10^-5 M
Let's summarize all concentrations:
[HClO] = 9.83 x10^-5 M
[OH-] = 5.89 x 10^-9 M
[H3O+] = [ClO-] = 1.688 x 10^-6 M
Since the solution is dilute, H2O is relatively higher in concentration.
Thus in relative amounts, the order would be
H2O >>> HClO > H3O+ = ClO- > OH-
The Formula is:
Molar Mass of an Element = x Relative mass of atoms Molar mass constant (1g / mol)
Further Explanation
Understand molar mass
Molar mass = mass (in grams) of 1-mol substances
Molar mass is the mass (in grams) of one mole of a substance. By using the atomic mass of an element and multiplying it by the conversion factor of grams per mole (g / mol), you can calculate the molar mass of the element.
Look for the relative atomic mass of elements
Relative atomic mass:
Hydrogen = 1,007
Carbon = 12.0107
Oxygen = 15,9994
Chlorine = 35,453
The relative atomic mass of an element is the average mass of a sample of all its isotopes in atomic units. This information can be found in the periodic table of elements.
Multiply the atomic mass relative to the molar mass constant
Molar Mass of an Element = x Relative mass of atoms Molar mass constant (1g / mol)
Hydrogen = 1,007 x 1g / mol = 1,007 g / mol
Carbon = 12.0107 g / mol
Oxygen = 15,999 g / mol
Chlorine = 35,453 g / mol
H2: 1,007 x 2 = 2,014 g / mol
O2: 15,999 x 2 = 31,9988 g / mol
C2: 35,453 x 2 = 70,096 g / mol
example:
Hydrochloric acid
HCl -> 1 hydrogen atom, 1 chlorine atom
Glucose
C6H12O6 -> 6 carbon atoms, 12 hydrogen atoms, 6 oxygen atoms
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Molar mass brainly.com/question/2194946
Calculate molar mass brainly.com/question/11444952
Details
Class: Middle/High School
Subject: Chemistry
Keywords: Mass, Molar, atoms
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Answer:
selenium, Se
Explanation:
Selenium is the only element that has a melting point below 525 K. Therefore, it would be the only element that would be liquid at that temperature.
Final answer:
At 525 K, only bismuth would be in the liquid phase as its melting point is 544.7 K and boiling point is 1837 K, while all other elements would be in the solid state.
Explanation:
The question asks about the phase of different elements at a specific temperature of 525 K. To answer the question, we need to know the melting and boiling points of these elements: platinum (Pt), selenium (Se), bismuth (Bi), copper (Cu), and calcium (Ca).
At 525 K, bismuth (Bi) would be in the liquid state as its melting point is 544.7 K and boiling point is 1837 K. All other elements mentioned have melting points and boiling points higher than 525 K, so they would be in the solid state.
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inventing stories?
Plz Help ;_; :v
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Imaginative, artistic, or a storyteller are all terms that can be used to describe someone who enjoys making up stories.
A person who enjoys making up stories is sometimes described as inventive and creative, and they have a great talent for creating compelling stories that take readers or listeners to unfamiliar worlds.
The ability of this storyteller to create freshstories, characters, and settings demonstrates their skill at transforming simple concepts into elaborate and captivatingtales.
Their creative nature enables them to investigate many viewpoints and events, bringing to life striking pictures and feelings.
Thus, this person has the ability to capture audiences and create immersive experiences, whether through written word or verbalexpression, making them a source of entertainment and inspiration for those who value the craft of storytelling.
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Answer:
One word for this is, raconteur - it means a person skilled in telling anecdotes. anecdotist. narrator, or storyteller
Explanation: