Answer:
0.32 g
Explanation:
First, we find the number of moles n of silver deposited.
n = m/M where m = mass of silver deposited = 1.08 g and M = Atomic weight of silver = 108 g/mol
n = m/M = 1.08 g/108 g/mol = 0.01 mol
Now, the quantity of electricity Q = nF where n = number of moles of silver = 0.01 mol and F = Faraday's constant = 96500 C/mol
Q= nF = 0.01 mol × 96500 C/mol = 965 C
By the chemical equation for copper,
Cu²⁺ + 2e ⇒ Cu
2 moles of electrons deposits 1 mol of copper, that is
2 × 96500 C deposits 1 mol of copper, then 965 C will deposit x mol
x = 1 mol × 965 C/2 × 96500 C = 1/200 mol = 0.005 mol of copper
So, we find the mass of 0.005 mol of copper using
n = m/M where m = mass of copper deposited = unknown and M = Atomic weight of copper = 63.54 g/mol and n = number of moles of copper = 0.005 mol
m = nM
= 0.005 mol × 63.54 g/mol
= 0.32 g
1.Identify the types of bonds between the carbon and the two oxogen molecules in the carbon dioxide molecule
2.then describe the bond angle
3. Explain how the structural formula can be used to determine bond angles .
Which of the following double-replacement reactions will occur?
NaBr(aq) + AgNO3(aq) →
NaBr(aq) + Ca(NO3)2(aq) →
NaBr(aq) + Al(NO3)2(aq) →
NaBr(aq) + KNO3(aq) →
NaBr(aq) + AgNO3(aq) →NaNO3(aq) + AgBr(s)⇒ double-replacement reactions will occur
Further explanationDouble-Replacement reactions. Happens if there is an ion exchange between two ion compounds in the reactant to form two new ion compounds in the product
A double replacement reaction will occur if one or both of the products is an insoluble precipitate, a liquid, or a gas
To predict whether this reaction can occur or not is one of them, the precipitation reaction. A precipitation reaction occurs if two ionic compounds which are dissolved reacted to produce one of the products of the ion compound does not dissolve. Formation of these precipitating compounds that cause reactions can occur
Solubility Rules:
• 1. soluble compound
All compounds of Li +, Na +, K +, Rb +, Cs +, and NH4 +
All compounds of NO₃⁻ and C₂H₃O₂⁻
Compounds of Cl−, Br−, I− except Ag⁺, Hg₂²⁺, Pb²⁺
Compounds of SO₄²⁻ except Hg₂²⁺, Pb²⁺, Sr²⁺, Ba²⁺
• 2. insoluble compounds
Compounds of CO₃²⁻ and PO₄³⁻ except for Compounds of Li +, Na +, K +, Rb +, Cs +, and NH₄ +
Compounds of OH− except Compounds of Li +, Na +, K +, Rb +, Cs +, NH₄⁺ , Sr²⁺, and Ba²⁺
NaBr(aq) + AgNO3(aq) →NaNO3(aq) + AgBr(s)⇒ occur
NaBr(aq) + Ca(NO3)2(aq) → NaNO3(aq) + CaBr₂(aq)⇒not occur
NaBr(aq) + Al(NO3)3(aq) →NaNO3(aq) + AlBr3(aq)⇒not occur
NaBr(aq) + KNO3(aq) →NaNO3(aq) + KBr(aq)⇒not occur
Write the balanced chemical reaction between baking soda and vinegar.
Answer
a ecuación química para la reacción es: Bicarbonato sódico + vinagre = Acetato de sodio + agua + dióxido de carbono NaHCO3 + CH3COOH => CH3COO-Na+ + H2O + CO2 De la anterior fórmula, puede calcularse que una cucharadita de vinagre produce aproximadamente 1'5 gr de CO2
Question 12 of 32
The work of which scientist was most essential to the use of the scientific
method and quantitative measurements in chemistry?
A. Antoine-Laurent Lavoisier
B. John Dalton
O C. Robert Boyle
O D. Marie Curie
Answer:
A. Antoine-Laurent Lavoisier
Explanation:
Hope this helped!
HY
Warm
Cool
Is this a land or a sea breeze?
Answer
Explanation:
Recall that the land surface cools quicker than the water surface at night. Therefore, the warmer air over the ocean is buoyant and is rising. The denser cool air over the land is flowing offshore to replenish the buoyant warm air and is called a land breeze.
A wave on a lake has a wavelength of 5.0 M and a Frequency of 4 Hz. What is the speed of the wave in m/s?
Answer:
The appropriate speed will be "20 m/s".
Explanation:
The given values are:
Wavelength,
λ = 5.0 M
Frequency,
f = 4 Hz
Now,
The speed of the wave will be:
⇒ [tex]V=f\times \lambda[/tex]
On putting the values, we get
⇒ [tex]=4\times 5.0[/tex]
⇒ [tex]=20 \ m/s[/tex]
What kind of bond is present in HCI
A. Valence Bond
B. Ionic Bond
C. Metallic bond
D. Covalent Bond
Which of the following do all food chains in an ecosystem depend on
How do the products of chemical reactions compare to their reactants? Question 7 options: The products usually weigh more than the reactants. The products often have completely different properties than the reactants. The products usually have more atoms than the reactants. The products are usually more toxic than the reactants
Answer:
The second choice.
Explanation:
The products often have completely different properties than the reactants.
The first and third are wrong because matter is always preserved in a chemical reaction.
The last is not true.
Which of the following would be found ONLY in plant cells
Answer:
chloroplasts, cell walls, or intracellular vacuoles
Explanation:
You didn't list the following, but I'm guessing it is chloroplasts, cell walls, or intracellular vacuoles
ILL GIVE BRAINLIEST I NEED THE ANSWER RIGHT AWAY PLEASE SOMEONE
For each of the following processes that show the formation of ions, complete the process by indicating
the number of electrons that must be gained or lost
to form the ion. Indicate the total number of electrons in the ion, and in the atom from which it was
made.
a. Al S Al3 d. F S F
b. S S S2 e. Zn S Zn2
c. Cu S Cu f. P S P3
77. For each of the following atomic
Answer:
ILL GIVE BRAINLIEST I NEED THE ANSWER RIGHT AWAY PLEASE SOMEONE
For each of the following processes that show the formation of ions, complete the process by indicating
the number of electrons that must be gained or lost
to form the ion. Indicate the total number of electrons in the ion, and in the atom from which it was
made.
a. Al S Al3 d. F S F
b. S S S2 e. Zn S Zn2
c. Cu S Cu f. P S P3
77. For each of the following atomic
Explanation:
ILL GIVE BRAINLIEST I NEED THE ANSWER RIGHT AWAY PLEASE SOMEONE
For each of the following processes that show the formation of ions, complete the process by indicating
the number of electrons that must be gained or lost
to form the ion. Indicate the total number of electrons in the ion, and in the atom from which it was
made.
a. Al S Al3 d. F S F
b. S S S2 e. Zn S Zn2
c. Cu S Cu f. P S P3
77. For each of the following atomic
Imagine that you have an ideal gas in a 4.30 L container, and that 1250 molecules of this gas collide with a square-inch area of the container at any given instant. If the volume is increased to 21.5 L at constant temperature, how many collisions will occur per square inch of this larger container
Answer:
250 collisions per square inch
Explanation:
According to Boyle's law, at constant temperatures, the pressure exerted by gas molecules is inversely proportional to the volume of the gas. Hence;
P1V1 = P2V2 where P1 = initial pressure, V1 = initial volume, P2 = final pressure, and V2 = final volume
In this case, the collision that occurred is taken as the pressure.
P1 = 1250, V1 = 4.30 , V2 = 21.5 P2 = ?
P2 = P1V1/V2
= 1250 x 4.30/21.5
= 250
Hence, at a constant temperature, 250 collisions per square inch of the larger container will occur.
Injuries from work related falls can affect employees by resulting in time off and medical cost
Answer:
true
Explanation:
its A
The above statement is considered to be correct and true.
The Occupational Safety and Health Administration (OSHA) is a federal agency that is saddled with the responsibility of assuring and ensuring a safe and healthy working conditions for an employee or group of employees by doing the following;
Setting and enforcing safety standards.Setting and enforcing rules.Providing education.Conducting trainings and assistance to various organizations.According to the Occupational Safety and Health Administration (OSHA), trainings on the adoption and application of safety precautions (tools) such as wearing a personal protective equipment (PPE); face masks (respirators), ear plugs, safety boots, gloves, helmet, etc., are very important and are essentially to be used by all employees (workers) while working in hazard prone environments or industries.
However, when an employee fails to strictly adhere to the recommended OSHA safety precautions, he or she is more likely to sustain a work-related accident or injury from a fall. Thus, this would negatively affect (impact) the employee because it results in him or her being absent from work (time off) and requires some costs to pay for medicals (medical cost).
In conclusion, injuries from work related falls can affect employees by resulting in time off and medical cost.
Find more information: https://brainly.com/question/15442363
We have a photon with the wavelength of 605 nm. What is the frequency of this
photon?
Answer:
Explanation:
Speed of light = Wavelength x Frequency.
605 nm x Frequency = 3x10^8 m/s
6.05 x 10^-7 m x Frequency = 3x10^8 m/s
Frequency = 4.96 x 10^14 Hz
Answer:
ν=4.96x10^14 Hz
Explanation:
c=λν
λ=wavelength
ν=frequency
in this problem:
c=3x10^8
λ=605x10^-9
so ν=c/λ
v=(3x10^8)/(605x10^-9)
v=4.96x10^14
please give thanks :)
1. Magnesium chloride solution reacts with silver nitrate solution to form magnesium nitrate
solution and silver chloride.
Equation: MgCl2 (s) + 2 AgNO3 (aq) → Mg(NO3)2 (aq) + 2 AgCl (s)
Find the mass of silver chloride formed if
(a) 20 cm of 2.5 mol/dm^3 of magnesium chloride solution is used.
(6) 20 cm of 2.5 g/dm^3 of magnesium chloride solution is used.
a. 1,4332 g
b. 7.54~g
Further explanationGiven
Reaction
MgCl2 (s) + 2 AgNO3 (aq) → Mg(NO3)2 (aq) + 2 AgCl (s)
20 cm of 2.5 mol/dm^3 of MgCl2
20 cm of 2.5 g/dm^3 of MgCl2
Required
the mass of silver chloride - AgCl
Solution
a. mol MgCl2 :
[tex]\tt 20~cm^3=20\times 10^{-3}~dm^3\\\\mol=M\times V\\\\mol=2.5~mol/dm^3\times 20\times 10^{-3}DM^3=0.05[/tex]
From equation, mol AgCl = 2 x mol MgCl2=2 x 0.05=0.1
mass AgCl(MW=143,32 g/mol)= 0.1 x 143,32=1,4332 g
b. mol MgCl2 (MW=95.211 /mol):
[tex]\tt mol=M\times V\\\\mol=\dfrac{2.5~g/dm^3}{95,211 g/mol}=0.0263~mol/dm^3[/tex]
From equation, mol AgCl = 2 x mol MgCl2=2 x 0.0263=0.0526
mass AgCl(MW=143,32 g/mol)= 0.0526 x 143,32=7.54~g
Solve it plz?tttttttttttttttttttt
Which part of the atom determines how an element interacts in a chemical reaction?
Ansewer : nucleus
The number of protons in the nucleus determines which element an atom is, while the number of electrons surrounding the nucleus determines which kind of reactions the atom will undergo. The three types of subatomic particles are illustrated below for an atom of helium—which, by definition, contains two protons.
how can I identify easliy Amphoteric oxide from basic oxide
Answer:
A general guideline to determine if oxide is acidic, basic, or amphoteric is to use the periodic table. Typically, metals such as Ba form basic oxides (BaO), while nonmetals such as S form acidic oxides (SO3).
Which of the following statements about energy is NOT TRUE?
O Energy is the ability to do work or cause change.
Energy can neither be created nor destroyed.
When you use energy, the total amount of energy decreases.
Energy can be changed from one form to another.
Answer:
when you use energy , the total amount of energy decreases.
what has 9 protons and -1 charge? PLEASE HELP ME
Fluorine, I still remember this from my science fair
Jordan places a hot spoon into a container of ice
cream. How does this help him scoop out the ice
cream?
Answer:
It melts some of the ice cream and it makes it easier for him to scoop the ice cream out
Explanation:
How many grams of water can be produced when 8 g of hydrogen react with 32 g oxygen?
Answer
[tex]--------------------------------------------[/tex]
According to Toppr, [tex]2\cdot2=4g[/tex] of hydrogen reacts with [tex]1\cdot32=32g[/tex] of oxygen to form [tex]2\cdot18=36g[/tex] of water. Hence, [tex]44=1g[/tex] of hydrogen reacts with [tex]432=8g[/tex] of oxygen to form [tex]436 = 9g[/tex] of water. [tex]9[/tex] grams of water can be produced when [tex]8[/tex]g of hydrogen reacts with
[tex]--------------------------------------------[/tex]
Hope this helps! <3
[tex]--------------------------------------------[/tex]
What would red litmus paper be used to determine?
A. If a solution is acidic or neutral
B. If a solution is basic or neutral
C. If a solution is acidic
D. If a solution is supersaturated
Answer:
determines if a solution is acidic.
Explanation:
what volume (in L) of a 3.95 M potassium chloride solution would be needed to make 325 mL of a 2.76 M solution by dilution
Explanation:
Moles of KCl in new solution = 0.325dm³ * (2.76mol/dm³) = 0.897mol.
Hence volume needed = 0.897mol / (3.95mol/dm³) = 0.227dm³ or 0.227L.
Anna is conducting an experiment to determine how weather affects cell phone reception. She is trying to decide the best way to conduct her experiment in order to collect meaningful data.
The question is incomplete, the complete question is;
Anna is conducting an experiment to determine how weather affects cell phone reception. She is trying to decide the best way to conduct her experiment in order to collect meaningful data. Which of the following experiments would help Anna collect the best data? A. Test different cell phones in different locations on days with clear weather. B. Test different cell phones in different locations on days with rainy weather. C. Test a cell phone's reception in one location with clear weather and in another location with rainy weather. D. Test a cell phone's reception in the exact same location under various atmospheric conditions.
Answer:
D. Test a cell phone's reception in the exact same location under various atmospheric conditions.
Explanation:
In this experiment that Anna intends to carry out, the independent variable is the atmospheric condition. The dependent variable must be the cell phone reception, it is expected to change with atmospheric conditions.
In order to obtain valid results, other factors such as such as type of cellphone and location (control variables) must be held constant so as to collect the best data.
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 B?
Occurs in substances that have at least one non-metal
Occurs in substances that have a repeating lattice structure
Occurs in substances that have discrete molecular structure
Occurs in substances that have high melting points
Ionic and covalent bonds can occur in substances that have a repeating lattice structure.
Ionic and covalent bondsIonic bonds are formed when an atom donates electron (s) to another atom. Covalent bonds, on the other hand, are formed when two atoms share electrons to complete their octet states.
Ionic compounds are formed from a combination of metal and non-metal atoms. They usually have crystalline lattice structures with high melting points.
Covalent compounds are formed between non-metal atoms. They can also have lattice structures but generally have lower melting points because the forces holding the molecules together are weaker.
More on ionic and covalent bonds can be found here: https://brainly.com/question/10777799
#SPJ1
Answer:
Occurs in substances that have a repeating lattice structure
Explanation:
balance the following skeleton equations Mg+02---->MgO
Answer: [tex]2Mg+O_2\rightarrow 2MgO[/tex]
Explanation:
Skeletal equations are defined as the equations in which formula are used to indicate the chemicals that are involved in a chemical reaction.
According to the law of conservation of mass, mass can neither be created nor be destroyed. Thus the mass of products has to be equal to the mass of reactants. The number of atoms of each element has to be same on reactant and product side. Thus chemical equations are balanced.
Thus the balanced chemical equation will be :
[tex]2Mg+O_2\rightarrow 2MgO[/tex]
explain why the chemical formula below is “balanced”.
2Cu + 02 -> 2CuO
How do metals and non-metals for ions?
Answer:
Metal atoms and non-metal atoms do different things when they ionise. Metal atoms lose the electron, or electrons, in their highest energy level and become positively charged ions. Non-metal atoms gain an electron, or electrons, to become negatively charged ions.
Explanation:
In plants, algae, and some bacteria, energy is produced by the:
A. nucleus
B. chloroplast
C. vacuole
D. mitochondria
Answer: D?
Explanation: The mitochondrion (plural mitochondria) is a membrane-bound organelle found in the cytoplasm of eukaryotic cells. It is the power house of the cell; it is responsible for cellular respiration and production of (most) ATP in the cell.
