The amount of energy released by the reaction b. 3.28 x 10(-37)J
What is a nuclear fission reaction?A nuclear fission reaction in which the nucleus is divided into numerous small nuclei.
The mass difference is 0.0593
To calculate the energy
[tex]E = \Delta mc^2\\\\c = 3 \times 10^8\;m/s\\\\m = 3.86 \times 10^-^3 \;kg\\[/tex]
Putting the values in the equation
[tex]E = (0.0593) (3 \times 10^8\;m/s)^2 = 5.337 \times 10^1^5[/tex]
Thus, the correct option is b. 3.28 x 10(-37)J
Learn more about nuclear fission reaction
https://brainly.com/question/913303
#SPJ1
2. Observe Examine the flame closely. Is it the wax or the wick that burns?
Answer:
Wax
Explanation:
The combustible material in a candle or its fuel is wax. Before the wax can become fuel, it first needs to get hot enough. To start that heating process, you first need to light the wick with another source of fire, such as a match. As the wick burns down the heat of the flame melts the wax around the wick.
lead ions and magnesium ions both have a charge of 2+. predict the ionic equation for this reaction.
As both the ions have charge of +2 the compound formed is PbMg as the like charges will cancel out each other.
What are ions?An ion is defined as an atom or a molecule which has a net electrical charge. There are 2 types of ions :1) cation 2) anion . The cation is the positively charged ion and anion is the negatively charged ion . As they are oppositely charged they attract each resulting in the formation of ionic bond.
Ions consisting of single atom are mono-atomic ions while which consists of two or more ions are called as poly-atomic ions . They are created by chemical interactions . They are very reactive in their gaseous state and rapidly react with oppositely charged ions resulting in neutral molecules.Ions of opposite charges combine in ionic compounds.
Learn more about ions,here:
https://brainly.com/question/1488567
#SPJ2
A few drops of food coloring are put into two containers of water. Observations are shown in the table. Which statement best explains the observations in the table? A) The temperature of sample 1 is higher than the temperature of sample 2 B) The molecules in sample 1 are moving faster than the molecules of sample 2 C) The temperature of sample 2 is higher than the temperature of sample 1 D) The water molecules in sample 2 are moving slower than the molecules in sample 1
Answer:
C
Explanation:
Increasing temp causes increased molecule movment in sample 2
Define density please thanks!!
Question 28 of 34
What are the products of the neutralization reaction between HNO3 and
NaOH?
O
A. NH3 and Na₂O
OB. NaNO3 and H₂O
OC. NaH and NO4H
OD. NO₂, H₂, and H₂O
Answer:
B
Explanation:
NaNO3 and H2O
(double replacement reaction)
What is the wavelength of an electromagnetic wave that has a frequency of
1.82 x 1018 Hz in a vacuum? (The speed of light in a vacuum is 3.00 × 108
m/s.)
O A. 6.07 × 109 m
OB. 5.46 × 1026 m
OC. 5.49 x 10-19 m
OD. 1.65 x 10-10 m
The wavelength of an electromagnetic wave that has a frequency of 1.82 x 10¹⁸ Hz in a vacuum is 1.65 × 10-¹⁰m.
How to calculate wavelength?The wavelength of a wave can be calculated by dividing the speed of the wave by its frequency.
According to this question, a wave has a frequency of 1.82 x 10¹⁸ Hz in a vacuum and speed of light in a vacuum is 3.00 × 10⁸ m/s.
wavelength = 3 × 10⁸ ÷ 1.82 × 10¹⁸
wavelength = 1.65 × 10-¹⁰m
Therefore, the wavelength of an electromagnetic wave that has a frequency of 1.82 x 10¹⁸ Hz in a vacuum is 1.65 × 10-¹⁰m.
Learn more about wavelength at: https://brainly.com/question/13533093
#SPJ1
An HNO3 (ag) solution has a pH of 1.75. What is the molarconcentration of the HNO3(aq) solution?
⇒ 0.018
-use pH=-log[H3O+]
-solve for H3O+
If I have 340 mL of a 1.5 M NaBr solution, what will the concentration be if I add 560 mL more water to it?
Answer:
0.5667 M ≅ 0.57 M.
Explanation:
It is known that the no. of millimoles of a solution before dilution is equal to the no. of millimoles of the solution after the dilution.
It can be expressed as:
(MV) before dilution = (MV) after dilution.
M before dilution = 1.5 M, V before dilution = 340 mL.
M after dilution = ??? M, V after dilution = 340 mL + 560 mL = 900 mL.
∴ M after dilution = (MV) before dilution/(V) after dilution = (1.5 M)(340 mL)/(900 mL) = 0.5667 M ≅ 0.57 M.
how do atoms show both unity and diversity
Answer: As one atomic dipole nears another atom it will affect the electron density distribution, so for example if the slightly positive end of the atom is located next to another atom, it will attract the electron(s) in the other atom. A covalent bond happens when atoms share an electron between them. The other kind of bond is called ionic, and it happens when one atom gives an electron to another atom. These bonds are held together with electric forces. Two atoms of the same element can be different if their electrons are in different states. If one copper atom has an electron in an excited state and another copper atom has all of its electrons in the ground state, then the two atoms are different.
Answer:
there are relatively few atoms but they can make many molecules
Explanation:
What is the equilibrium constant equation for the chemical process below?
2A + B2 —> A₂B2
Let's see
[tex]\\ \rm\dashrightarrow k=\dfrac{Concentration\:of\: products}{Concentration\:of\: reactants}[/tex]
[tex]\\ \rm\dashrightarrow k=\dfrac{\left[A_2B_2\right]}{\left[A\right]^2\left[B\right]}[/tex]
Protons and neutrons are made from which of the following particles?
Down quarks only
Hadrons
Up quarks and down quarks
Up quarks only
Which hydrocarbon will undergo a substitution reaction with chlorine.
The hydrocarbons that will undergo substitution reactions with chlorine would be those that are saturated.
What are saturated hydrocarbons?They are hydrocarbons that contain no double or triple carbon to carbon bonds.
Such hydrocarbons cannot undergo addition reactions unlike those that contain double or triple bonds.
Alternatively, saturated hydrocarbons are able to undergo substitution reactions with chlorine in the presence of light, with hydrogen being displaced in the process.
More on saturated hydrocarbons can be found here: https://brainly.com/question/16995585
#SPJ1
What is the name of the colony shown?
Answer: New Hampshire
Explanation:
If it is the dark green then its New Hampshire :)
Answer:
New Hampshire ;)
Explanation:
New Hampshire is the dark green state on this map, and it is apart of the first 13 colony I hope that helped.
Why is copper a pure substance? a. because it is an element b. because it is a compund c. because it is a homogenous mixture
Answer:
a. because it is an element
Explanation:
its pure because it only has one type of atom, making it an element
Why does the hemisphere that is titled away from the sun experience winter?
(science)
An atom was observed with +3 charge, n = 38, and e = 28, What is the element name of the atom?
A. Gallium - 69
B. Nickel - 66
C. Manganese - 63
D. Selenium - 72
Which of these metals must release the most heat to expenence a given decrease in temperature per gram of metal? Aluminum, Lead, and Iron.
Aluminium is the metal which must release the most heat to experience a given decrease in temperature per gram of metal.
What is Thermal conductivity?This is as a result of free electrons and is the ability of a substance to conduct heat.
Aluminium has the highest thermal conductivity in this case which is why it will release the most heat to experience a given decrease in temperature per gram of it.
Read more about Thermal conductivity here https://brainly.com/question/11213835
#SPJ1
Why do fireworks produce heat when they explode?
look at the screenshot ;)
This is not the best way to organize a periodic table because two elements might have similar atomic mass.
What is periodic table?Periodic table is a chart in which arrangement of chemical elements are done.
In the early periodic table elements are arranged on the basis of their atomic masses, while after sometime Moseley arranged the periodic table on the basis of atomic number as he proposed that properties of an element is justified on the basis of number if electrons.
And mass of two substances may be same so it is difficult to differentiate between them.
Hence, two elements might have similar atomic mass.
To know more about periodic table, visit the below link:
https://brainly.com/question/14514242
#SPJ1
whAT IS THE ELEMENTS FOR THE EQUATION OF DENSITY?
Answer:
Hello there! I believe the answer you need is d= M/V. Have a good day,night or miday. Sorry if I'm wrong.
Stacy made the following table to compare the functions of plant and animal structures, but she is missing a row title. Which of the following would best replace the X?
a table comparing the functions of different animal and plant structures. There is an unknown 'X' in the table. The skeleton in animals and the stem in plants provide support. The fur in animals and the waxy covering in plants provide protection. The ovaries in animals and the pistil in plants make 'X'
Answer:
female reproductive structures
Which compound could serve as a reactant in a neutralization reaction?.
Answer:
In this type of neutralization reaction, the acids and bases are the reactants, since they are the materials that will react to form a new solution. The products are water and salt since they have been created following the reaction.
Explanation:
Neutralization occurs when a strong acid and a strong base come together in a chemical reaction to form water and salt.
In chemistry, acids and bases are measured on the pH scale, which ranges from 0 to 14. Pure water sits in the middle, at a neutral 7. Anything below 7 is an acid, and anything above 7 is a base. Often, solutions are either too acidic or too basic, so a reaction must take place in order to achieve neutralization.
That neutralization leads to the formation of water and salt. In chemistry, salt doesn’t necessarily just mean table salt. It is also a broader term that categorizes the compound that is created in the reaction between an acid and a base.
Explain why a solution of calcium conducts electricity but solid calcium chloride does not
Answer:
because the ions arent firmly held in place!
Explanation:
A sample of lead released 2,744 J when it cooled from 90 to 19 °C. What was the
mass of the sample of lead? (The specific heat of lead is 0.129 J/g x °C)
Answer:
299.60 g
Explanation:
Use the formula q = mCΔT (q= heat, m= mass, c = specific heat for that specific substance, ΔT is change in temperature Final Temp - Initial Temp)
Released heat means it has negative sign.
q = mCΔT
-2744 = (mass) (0.129) (19-90)
mass= 299.60 g
Why is the bermuda triangle deadly? or is it just a myth?
Answer:
Its neither a myth nor deadly
Explanation:
Bizarre hexagonal clouds forming above the Bermuda Triangle may be the reason why dozens of ships and planes have mysteriously vanished in the notorious patch of sea, according to scientists.
According to the new theory, clouds over the Bermuda Triangle are like “air bombs” strong enough to cause ship and plane wrecks. The strange “hexagonal” shaped clouds were discovered using radar satellite imagery, which were between 20 and 50 miles wide forming over the water.
2.0 mL of a 0.75 M solution of potassium permanganate , KMnO4 solution is used to make a 500 mL solution . What is the concentration of the new solution ?
The concentration of the new solution is 0.003 M.
How do we calculate the required concentration?Required concentration of the final solution will be calculated by using the below equation as:
M₁V₁ = M₂V₂, where
M₁ & V₁ are the molarity and volume of initial solution.
M₂ & V₂ are the molarity and volume of final solution.
On putting values from the question, we get
M₂ = (0.75)(2) / (500) = 0.003 M
Hence required concentration is 0.003M.
To know more about concentration, visit the below link:
https://brainly.com/question/17206790
#SPJ1
Terbium-147 undergoes positron emission to become a stable atom. what is that stable atom? a. b. c. d. e. f.
Terbium-147 undergoes positron emission to become a stable atom, the stable atom is ₆₄Gd¹⁴⁷.
What are radioactive decay series?Series (or family) of natural radioactive decay is the set of elements with unstable nuclei, which follow an orderly sequence of spontaneous decay, that is, they emit alpha and beta particles, until a stable lead nucleus is created.
In this case, natural radioactive decay occurs when the nucleus of the atom of some chemical element is unstable and then it "breaks", releasing electromagnetic radiation and disintegrating.
See more about radioactive decay at brainly.com/question/1770619
#SPJ4
Which equation represents a combustion reaction?
1) 4fe + 3o2 = 2fe2o3
2) 2h2o = 2h2+o2
3) 2agno3 + h2s = ag2s + 2nho3
4) 2al + n2= 2aln
Answer:
2
Explanation:
do take note that combustion reactions releases oxygen.
Part A The first step to engineering is to define the problem. Write down the problem the students have to solve, and describe the challenges they will face when coming up with a solution.
WILL MARK BRAINLIEST!!
Answer:
Engineering is all about solving problems using math, science, and technical knowledge. And engineers have solved a lot of problems in the world by designing and building various technologies. We have everything from machines that can breathe for you in hospitals to suspension bridges to computers we use every day. All of these things were once designed by engineers using the engineering design process.
Explanation:
Answer:
Students will have to use their brains to solve problems and challenges they will face to find a solution to cleaning up oil spills. Students will face failures after completing their solution, lots of research, and problems during the making of their solutions. What will work? What won't?
Explanation:
Hope this helps!
kindly help me
i am confused
i will mark you brainlist
Explanation:
a) 2 (Cr)³+ + 3 BiO3- + 4 H+ → 3 (Bi)3+ + Cr2O72- + 2 H2O
b)
have posted a similar question in the image for the phosgene i hope it helps little
