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Hope this helps!
Have a great day!
Related Questions
Determine which of the following elements would lose electrons when becoming ions:I. HydrogenII. HeliumIII. IronIV. FluorineV. GalliumA. I, II, and IIIB. I and IIIC. IV and VD. I, III, and V
Answers
Chemistry =>The periodic table => Ion
Ions form when a neutral element gains or loses electrons. The number of electrons you gain or lose will depend on the valence electrons, that is, the electrons in the last energy level.
When the valence electrons are less than 4, the element will lose its electrons when it becomes an ion. If the element has more than 4 valence electrons, it will tend to gain electrons when becoming an ion.
Let's see the valence electrons of the elements, the valence electrons can be found in the periodic table:
I. Hydrogen: 1 valence electron
II. Helium: 2 valence electron (It is a noble gas with one energy level)
III. Iron: 2 valence electron
IV. Fluorine: 7 valence electron
V. Gallium: 3 valence electron
We see that elements that have less than 4 valence electrons are Hydrogen, Helium, Iron, and Gallium.
Helium is a special case since it has a single energy level with two electrons, so it is a stable element and it will hardly become an ion. So, we do not take helium into account.
Therefore, the answer will be Hydrogen, Iron, and Gallium.
Answer: D. I, III, and V
A template of a Venn diagram representing common and differentiating characteristics of covalent and ionic bonds is shown. Which of the following characteristics can be written only in space C?
Answers
Covalent and ionic bonds refer to atoms joined by their electrons. In covalent bonds, electrons are shared by the involved non-metal atoms. Option 2 is correct. Occurs due to the sharing of electrons between two non-metal atoms.
What are covalent and ionic bonds?
Both of them, covalent and ionic bonds, are chemical bonds that can form between atoms.
Ionic bonds occur between atoms with different electronegativity. When they bind, they transfer electrons from one atom to the other creating ions with opposite charges that attract each other.
Ionic compounds are formed by anions and cations.
• Cations are positive ions derivated from metals.
• Anions are negative ions derivated from non-metals.
The metal atoms share its electrons with the non-metal ones, creating stable configurations. Ionic bonds do not create molecules.
Covalent bonds are formed between atoms share electrons to be more stable. Atoms involved share electrons equally, creating a strong bond between them.
Covalent bonds are usually formed between non-metal atoms.
Option 2 is correct. Occurs due to the sharing of electrons between two non-metal atoms
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Complete question
A template of a Venn diagram representing common and differentiating characteristics of covalent and ionic bonds is shown.
Which of the following characteristics can be written only in space C?
On the diagram,
The non-overlapping space on the left is marked A, and belongs to the IONIC BOND side of the diagram.The overlapping space is marked B The non-overlapping space on the right is marked C, and belongs to the COVALENT BOND side of the diagram.Options,
Formed between positively and negatively charged ionsOccurs due to the sharing of electrons between two non-metal atomsOccurs in substances that are mostly solids at normal temperature and pressureFormed between an atom with very high electronegativity and an atom with very low electronegativityWhich of these gaseous elements is LEAST reactive?
a. hydrogen
b.helium
c.nitrogen
d.oxygen
Answers
Answer:
helium
Explanation:
it has 8 valence electrons which fills its outer energy level making it have a stable arrangement of electrons hence least reactive
if 9.00g grams of gas are enclosed in a 50.00 L vessel at 273.15K and 2.000 atmospheres of pressure , what is the molar mass of the gas? what gas is this?
Answers
Answer: 4.88 g/mol. and helium
Explanation:
To find the molar mass of the gas, we can use the ideal gas law equation which is PV=nRT where:
P = pressure = 2.000 atm
V = volume = 50.00 L
n = number of moles
R = gas constant = 0.08206 L·atm/K·mol
T = temperature = 273.15 K
First, we need to find the number of moles of the gas:
PV = nRT
n = PV/RT
n = (2.000 atm)(50.00 L)/(0.08206 L·atm/K·mol)(273.15 K)
n = 1.844 mol
Now, we can find the molar mass of the gas by dividing its mass by the number of moles:
molar mass = mass/number of moles
mass = 9.00 g
molar mass = 9.00 g/1.844 mol
molar mass = 4.88 g/mol
Therefore, the molar mass of the gas is 4.88 g/mol.
To determine what gas this is, we can compare the molar mass of the gas to the molar masses of known gases. The molar mass of 4.88 g/mol is closest to that of helium (4.00 g/mol). Therefore, this gas is most likely helium.
I need help with my chemistry
Answers
Answer:
I believe the ans is FeO and Cl2
Answer:
\(\boxed {\boxed {\sf FeO and Cl_2}}\)
Explanation:
In a chemical reaction, there are reactants and products.
The reactants are the substances at the beginning of the reaction. They go into the reaction and are changed.
The products are the substances created in the reaction and what you end up with after the reaction.
In an equation, the reactants are to the left of the arrow and the products are to the right.
Let's look at the equation given:
\(2FeO+ 2Cl_2 \rightarrow 2FeCl_2+O_2\)
FeO and Cl₂ start the reaction and are to the left of the arrow, so they must be the reactants.
I did some of the boxes just need to figure out what the rest are. (LeChatelier’s Principle)
Answers
According to Lechatliers principle, as the concentration of HCl is decreasing, the reaction will shift to the reactant side to increase HCl, then the Keq decreases, since product concentration is decreases.
What is Lechatliers principle ?According to Lechatliers principle, when an any disorder imbalance the equilibrium of a reaction system, the system itself balances the factors and shifts to a new equilibrium.
If the concentration of any component is increased, then the reaction shifts to the direction in which it is consumed. If the concentration is decreased, the reaction shifts to the direction in which the component is produced.
Hence, as the HCl decreases, the reaction shifts to backwards direction to produce more HCl, then, concentration of reactants HCl and Mg increases, and that products and Keq decreases.
The reaction is an exothermic reaction. Hence, as the temperature is increased, the reaction shifts to the backward direction in which heat is used. Hence, reactant concentration increases, product concentration decreases, Keq also decreases.
If the temperature is reduced, the reaction shift to the forward direction. Hence, concentration of HCl, and Mg decreases but MgCl2 increases and Keq increases.
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Will mark BRAINLIEST!!
PLEASE ANSWER I HAVE 5 MINS
Answers
Answer:
Explanation:
7A 0.2
7B cork
7C Yes because the lighter it is the more likely it will float
7D Density is one of the fundamental scientific principles of life. It can describe any everyday object. Despite its significance, students often struggle to understand what it really is. Density is a measurement of how much space or volume is packed in an object or substance.
8 property means a characteristic or trait that you can use to describe matter by observation, measurement, or combination.
871g of sodium chloride is how many moles
Answers
Answer:
14.9 mol
Explanation:
To find the number of moles in a given mass of a sample of sodium chloride (NaCl), we can multiply the number of grams in the sample by the molar mass of sodium chloride, which is 58.44 g/mol.
871 g × (1 mol / 58.44 g)
= 871/58.44 mol
≈ 14.9 mol
Note that we rounded to 3 significant figures in the final answer because that is how many significant figures were given in the mass measurement of the sodium chloride sample.
In a single replacement reaction, the chloride ion in NaCl can be replaced
by
a. potassium
b. carbon
c.fluorine
d.neon
Answers
Answer:
c. fluorine
Explanation:
A single replacement reaction is defined as the chemical reaction in which a strong molecule replaces the weak molecule from a compound.
In a single replacement reaction, the chloride ion in NaCl can be replaced by fluorine and gives Sodium fluoride as fluorine (F) is stronger than chlorine (Cl) and from other given molecules also. So the single replacement reaction between NaCl and F will be:
NaCl + F2 => NaF + Cl2
Hence, the correct answer is "c. fluorine".
What is the de Broglie wavelength of a ball bearing a mas 0.02 kg travels at 330m/s?
Answers
The de Broglie wavelength of the ball bearing is approximately 1.004 x 10^-35 meters.
How to find the de Broglie wavelengthAccording to de Broglie's equation, the de Broglie wavelength (λ) of a particle is given by:
λ = h / p
where
h is Planck's constant (6.626 x 10^-34 J s) and
p is the momentum of the particle.
The momentum (p) of the ball bearing can be calculated using the formula:
p = m * v
where
m is the mass of the ball bearing and
v is its velocity.
Substituting the given values, we get:
p = 0.02 kg * 330 m/s = 6.6 kg m/s
Now, we can calculate the de Broglie wavelength (λ) of the ball bearing as follows:
λ = h / p = 6.626 x 10^-34 J s / 6.6 kg m/s = 1.004 x 10^-35 m
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When you're just chilling in the pool and then you think about this:
Answers
Explanation:
Sonic is my bf forever, back off
Answer:
oof I always lose on video games so I just quit
How many moles of hydrogen
are in 3.06 x 10^-3 g of glycine C2H5NO2
Answers
Answer:
2.04x10⁻⁴ mol
Explanation:
First we convert 3.06x10⁻³ grams of glycine into moles of glycine, using its molar mass:
3.06x10⁻³ g ÷ 75 g/mol = 4.08x10⁻⁵ mol C₂H₅NO₂In order to calculate the number of hydrogen moles, we multiply the number of glycine moles by 5, as there are 5 hydrogen moles per glycine mol:
4.08x10⁻⁵ mol C₂H₅NO₂ * 5 = 2.04x10⁻⁴ mol HBased on what you know about the patterns of elements as you move down a period on the Periodic Table, make a prediction about why phosphorus behaves differently from nitrogen.
Answers
The capacity of a phosphorus atom to create double bonds with other elements like oxygen, nitrogen, and sulfur is further hampered by its size.
What makes phosphorous so reactive?Four phosphorus atoms are joined by covalent bonds to form a closed ring structure in white phosphorus molecules. This shape results in a low bond angle, which causes strain inside the molecule and accounts for its extraordinarily reactive properties.
Why are phosphorus and nitrogen in the very same group?The periodic table's group V elements include nitrogen and phosphorus. Due to their comparable outermost shell electrons, they have several shared characteristics, particularly when forming compounds. Both feature an electron configuration with a ns2 np3 valence shell. Our bodies contain the fourth greatest amount of nitrogen.
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100 POINTS!!!
What is the average rate of the reaction over the entire course of the reaction?
1.6 × 10−3 (?)
1.9 × 10−3 (?)
2.0 × 10−3 (X)
2.2 × 10−3 (X)
Answers
Answer:
b. 1.9 × 10-3
Explanation:
Answer:1.9x10-3
Explanation:
average
< Question 27 of 27 > You decide it is time to clean your pool since summer is quickly approach chlorine, Cl₂, concentration of the pool should be between 1 and 3 ppin. you send a sample of pool water to a chemist for analysis of the Cl₂ conte 3.71 × 10–5 M. Convert the concentration of Cl, to parts per million (ppm). Macmillan Learning concentration:
Answers
To kill bacteria, chlorine is added to the water. However, it does not function immediately away and kill CDC.
Thus, When handled correctly, free chlorine* can destroy the majority of bacteria in a matter of minutes.
The CDC advises maintaining a pH of 7.2–7.8 and free chlorine levels of at least 1 ppm in swimming pools and 3 ppm in hot tubs and spas.
The CDC advises a pH of 7.2–7.8 and a free accessible chlorine content of at least 2 ppm in swimming pools when using cyanuric acid, a chlorine stabilizer, or chlorine products containing cyanuric acid (for instance, products generally known as dichlor or trichlor. The CDC advises against using cyanuric acid or chlorine products containing it in hot tubs or spas.
Thus, To kill bacteria, chlorine is added to the water. However, it does not function immediately away and kill CDC.
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prepare an editorial for national newspaper Daily highlighting the importance of sustainable development
Answers
SERIOUS flooding IN DELHI
Explanation:
The heat of vaporization for ethanol is 0.826 kJ/g. Calculate the heat energy in joules required to boil 75.25 g of ethanol.
Answers
The heat energy required to boil 75.25 g of ethanol is 62.1775 kJ.
To calculate the heat energy required to boil 75.25 g of ethanol, we need to use the formula:
Q = m × ΔHvap
Where Q is the heat energy required, m is the mass of ethanol, and ΔHvap is the heat of vaporization for ethanol.
Substituting the given values into the formula, we get:
Q = 75.25 g × 0.826 kJ/g
Q = 62.1775 kJ
This means that we need to supply 62.1775 kJ of heat energy to the ethanol to convert it from a liquid to a gas. The heat of vaporization is a measure of how much heat energy is required to break the intermolecular forces between the molecules of a liquid and convert it to a gas at a constant temperature. In the case of ethanol, it takes 0.826 kJ of heat energy to vaporize one gram of the liquid.
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A calibration curve was created to determine the quantity of protein in a solution. The calibration curve has the form of a straight line with the equation A = 0.0182 x +0.007 where A is the corrected absorbance of the solution and x is quantity of protein in the solution in units of micrograms (μg). Determine the quantity of protein in a solution that has an absorbance of 0.207. A blank solution has an absorbance of 0.050 .
Answers
Answer:
(a) 10 quantities of protein
(b) 2 quantities of protein
Explanation:
Given
\(A = 0.0182 x +0.007\)
Solving (a):
Solve for x when A = 0.207
Substitute 0.207 for A
\(A = 0.0182 x +0.007\)
\(0.207 = 0.0182x + 0.007\)
Solve for 0.0182x
\(0.0182x = 0.207 - 0.007\)
\(0.0182x = 0.200\)
Solve for x
\(x = 0.200/0.0182\)
\(x = 10.989010989\)
\(x = 11\) (Approximated)
Solving (b):
Solve for x when A = 0.050
Substitute 0.050 for A
\(A = 0.0182 x +0.007\)
\(0.050 = 0.0182x + 0.007\)
Solve for 0.0182x
\(0.0182x = 0.050 - 0.007\)
\(0.0182x = 0.043\)
Solve for x
\(x = 0.043/0.0182\)
\(x = 2.36263736264\)
\(x = 2\) (Approximated)
i have a picture of question
Answers
The mass of the cereal that you would need to consume can be obtained as 84.8 g
What is the number of moles?The number of moles, denoted by the symbol "n," is a fundamental unit of measurement in chemistry that represents the amount of a substance. It is used to quantify the quantity of atoms, molecules, or ions in a sample.
Number of moles of sucrose in the cereal = 11g/342 g/mol
= 0.03 moles
Now;
0.03 moles of sucrose is contained in 60 g of cereal
0.0424 moles of sucrose would contain 0.0424 moles * 60 g/0.03 moles
= 84.8 g
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In a condensed structural formula, each carbon atom is
A) clearly written as well as H atoms
B) clearly written without any H atoms
C) grouped with all other carbon atoms.
D) not explicitly shown.
E) written in lowercase letters.
Answers
In a condensed structural formula, each carbon atom is clearly written as well as hydrogen atoms.
Condensed structural formula:
It is one of the methods to write a structure of an organic compoundNo bond line is shown.Horizontal bond lines are not present in them only vertically bonded carbon atomsEach carbon atom is written separately along with hydrogen atoms ( if any)Clearly identifies the position of the functional group in the compound.The condensed structural formula of propanoic acid is \(CH_3CH_2COOH\)So from this, we can conclude that In a condensed structural formula, each carbon atom is clearly written as well as hydrogen atoms.
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I need assistance for number 5 and all parts of problem number five thank you !
Answers
Answer
The type of structural formula for each of the hydrocarbons given are shown below:
(a) Propyne (expanded):
(b) 2,2-dimethybutane (skeletal):
(c) Benzene (line-and-angle)
:
(d) Heptane (condensed)
CH₃CH₂CH₂CH₂CH₂CH₂CH₃
Why KHPo4 ignore effective as a buffer but kh2po4 is not
Answers
KH2PO4 is a more suitable choice as a buffer because it has a greater buffering capacity due to the presence of the weak acid and its conjugate base.
KHPo4 is not considered an effective buffer compared to KH2PO4 due to its limited buffering capacity. The effectiveness of a buffer is determined by the concentration and dissociation properties of its conjugate acid-base pair.
KH2PO4 is a salt composed of the weak acid H2PO4- and its conjugate base HPO4^2-. In an aqueous solution, KH2PO4 can dissociate to release H+ ions from the H2PO4- component, which acts as a weak acid, and the HPO4^2- component can accept H+ ions, acting as a weak base. This allows KH2PO4 to effectively resist changes in pH when small amounts of acid or base are added to the solution.
On the other hand, KHPo4 consists of the strong acid H3PO4 and the weak base HPO4^2-. H3PO4 fully dissociates in water, providing a large concentration of H+ ions, making it difficult for the HPO4^2- to effectively act as a base and maintain pH stability.
Therefore, KH2PO4 is a more suitable choice as a buffer because it has a greater buffering capacity due to the presence of the weak acid and its conjugate base.
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PLEASE HELP IN ONE MINUTE WILL MARK BRAINLIST
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The freezing point is 18° C
Another method for creating a buffer, in situ, is to add an appropriate amount of a strong base, e.g., NaOH, to a weak acid OR add an appropriate amount of a strong acid, e.g., HNO3, to a weak base. As an example, mixing 1.0 mol of acetic acid with 0.5 mol of NaOH will result in a buffer solution with 0.5 mol of acetic acid and 0.5 mol of acetate. The acetate is created by the reaction of acetic acid and the strong base, hydroxide. Given this information, which of the following, when mixed with the appropriate amount of HCl, would create a buffer solution?
a. HNO3
b. HClO2
c. LiCl
d. NH3
Answers
Answer:
As an example, mixing 1.0 mol of acetic acid with 0.5 mol of NaOH will result in a buffer solution with 0.5 mol of acetic acid and 0.5 mol of acetate. The acetate is created by the reaction of acetic acid and the strong base, hydroxide.
When HClO2 is mixed with the appropriate amount of HCl it would create a buffer solution. That is option B.
Methods used to form buffer solutionA buffer solution is the solution that resists a change in pH of a solution when acid or base is added because it is made up of weak acid and the conjugate base or weak base and the conjugate acid.
The methods that can be used to form a buffer solution include:
Adding a strong base to a weak acid: For example, mixing 1.0 mol of acetic acid with 0.5 mol of NaOH will result in a buffer solution with 0.5 mol of acetic acid and 0.5 mol of acetate.Adding a weak acid to a conjugate base: For example HCl is a strong acid which will react with a conjugate base such as HClO2.Although HCl is a strong acid, it can be converted to a weak acid through dilution with water. It is in this context that it can be used to form a buffer solution.
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The type of elements found in groups 13-18 include
Answers
Answer:
Please put question in!
Explanation:
PLEASE HELP ME WITH THE QUESTION IN THE IMAGE BELOW I WILL MAKE YOU BRAINLIEST AND GIVE YOU 17 POINTS!
Answers
Answer:
The sound playing from the first graph is louder, while the sound from the second graph is deeper, both of which have the same pitch.
Explanation:
First let's analyze the graphs,
Comparing the first graph to the second
Concluding from the above observations, the sound playing from the first graph is louder, while the sound from the second graph is deeper, both of which have the same pitch.
(3 sig figs) Given the chemical equation below, with 202 grams of Barium Oxide being produced how many grams of Aluminum Oxide would you need? 3 BaSO4 + Al203 —>
3 Ba0 + Al2(SO4)3
Answers
44.4 g is the mass of Aluminum Oxide is required for the given chemical reaction 3 BaSO\(_4\) + Al\(_2\)O\(_3\)—> 3 BaO + Al\(_2\)(SO\(_4\))\(_3\).
It is the most fundamental characteristic of matter as well as one of the essential quantities in physics. Mass is a term used to describe how much matter is there in a body. The kilogramme (kg) is the international standard of mass. A body's bulk remains constant at all times. only in rare instances where an enormous quantity of energy is supplied to or taken away from a body.
3 BaSO\(_4\) + Al\(_2\)O\(_3\)—> 3 BaO + Al\(_2\)(SO\(_4\))\(_3\)
moles of BaO =202/ 153.3
=1.32
moles of Al\(_2\)O\(_3\) = 1/3×1.32=0.44
mass of Al\(_2\)O\(_3\) = 0.44×101.9=44.4 g
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What is the name of Bel on the periodic table
Answers
Answer:
Nobelium or Beryllium
The following Lewis diagram represents the valence electron configuration of a main-group element.
This element is in group
.
According to the octet rule, this element would be expected to form an ion with a charge of
.
If is in period 5, the ion formed has the same electron configuration as the noble gas
.
The symbol for the ion is
.
Answers
This element is in group 1.
According to the octet rule, this element would be expected to form an ion with a charge of +1.
If X is in period 5, the ion formed has the same electron configuration as the noble gas Krypton
The symbol for the ion is Rb⁺
What is electronic configuration?Electronic configuration refers to the arrangement of electrons in the orbitals of an atom or molecule, indicating the energy level of the electrons, the number of electrons in each energy level, and the number of electrons in each orbital.
Considering the given element:
It has one valence electron, hence it is in group 1. Group 1 elements form ions with a charge of +1.
Losing one electron will give the ion the same electron configuration as Kyrton since it is the noble gas in Period 4.
The element is rubidium and the ion is Rb⁺.
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Consider four different samples: aqueous LiBr, molten LiBr, aqueous LiF, and molten LiF. Current run through each sample produces one of the following products at the anode: liquid bromine, fluorine gas, or oxygen gas. Match each sample to its anodic product from aqueous LiBr, Molten LiBr, aqueous LiF, and molten LiFA. Liquid bromine,
B. Fluorine gas,
C. oxygen gas
Answers
Answer:
Following are the solution to the given question:
Explanation:
Please find the matching in attached file.
During the electrolysis of Molten LiBr : Li is reduced and Br are oxidized .
Lithium Metal is produced at the Cathod during the electrolysis of Molten LiBR .
In the aquous LiBr : In aquous LiBr potential of Li is greater than the of water then Li is reduced to produce solid Li ion. As well As aqueous LiF ( electrolysis)and Molten LiF electrolysis produce the gas.
aqueous LiF: Oxygen gas.
Molten LiF : Flourine gas.
